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Evaluating Forestry Land During Inflationary Times
Item type: Journal Article • Journal: South African Forestry Journal • Authors: H. J.E. Uys --- Department of Forest Science,The Land Expectation Value criterion has been used since 1849 to calculate the value of forestry land. It was, however, developed in a static financial environment, and is no longer suitable for land valuation in today's dynamic financial environment. This... -
Comparison of Eucalyptus grandis Provenances and Seed Orchards in a Frost Frequent Environment
Item type: Journal Article • Journal: South African Forestry Journal • Authors: D.L. Rockwood --- Department of Forestry, USA G.F. Meskimen --- , USAAn international provenance trial of Eucalyptus grandis was established in southern Florida in 1980 and measured for growth and frost-tolerance through 8,8 years. The trial compared 20 Australian provenances 1) among themselves and 2) with seed orchard stock from Florida... -
Land Valuation with a Limited Planning Horizon
Item type: Journal Article • Journal: South African Forestry Journal • Authors: H. J.E. Uys --- Department of Forest Science, H. Kotze --- Department of Forest Science,The forestry industry in South Africa operates within a dynamic environment. Rotations are relatively short, land use conversion takes place regularly and company ownership changes frequently. Foresters in the private sector are therefore reluctant to use Land Expectation Value with... -
The Changing Landscape—is there Room for Forestry in the New South Africa?
Item type: Journal Article • Journal: South African Forestry Journal • Authors: GuyA. Cellier --- Mondi Forests,South Africa is going through a period of radical change, and traditionally disadvantaged people are expecting access to resources and opportunities that have thus far been denied them. -
A model for predicting livemass gain from stocking rate and annual rainfall
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.I. Bransby --- Department of Grassland Science,The relationship between livemass gain and stocking rate was established for young beef animals grazing kikuyu and Coastcross II pastures in each of five grazing seasons. The annual rainfall within these seasons ranged from 506 mm to 990 mm. Relationships... -
Conservative stocking or maximum profit: A grazing management dilemma?
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.E. Danckwerts --- Department of Agriculture (Eastern Cape Region), P.G. King --- Department of Agriculture (Eastern Cape Region),Swards in the False Thornveld of the Eastern Cape are generally stocked considerably in excess of the rate currently recommended for maximised production on a sustained basis. Economic analysis of the relationship between stocking rate and production per ha reveals... -
A model for predicting long term economic optimum stocking rates for beef cattle grazing dryland pastures
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.I. Bransby --- Department of Grassland Science,Previous models relating profit to stocking rate have not taken into account annual variation in rainfall. A model is developed here to allow for this factor. The frequency distribution of annual rainfall is used to demonstrate how the stocking rate... -
Die wiskundige simulering van koolhidraattranslokasie in natuurlike grasveld1
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: H J Fouché --- Departement van Landbou en Watervoorsiening (Vrystaatstreek), JM De Jager --- Departement Landbouweerkunde, J Booysen --- Departement van Landbou en Watervoorsiening (Karoostreek),Die groeifunksies benodig vir die simulasie van produksie van ‘n Themeda triandra‐grasveld met behulp van die PUTU 11 simulasiemodel is ontwikkel. Vir die ontwikkeling van die model is die veldproduksiedata van die 1980/81 groeiseisoen gebruik waarna dit suksesvol, vir drie... -
Influence of climatic and edaphic factors on the distribution of eragrostis lehmanniana nees in Arizona, USA
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J R Cox --- US Department of Agriculture, USA G B Ruyle --- Renewable Natural Resources, USALehmann lovegrass (Eragrostis lehmanniana Nees) was introduced into Arizona, USA, from South Africa in 1932 and has since been sown throughout the southwestern USA and Northern Mexico. The species is well adapted in southeastern Arizona where it has been sown... -
Groei en produksie van ‘n aanal aangeplante weidings onder beweiding
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.A. Pieterse --- Dept Plantproduksie, J.O. Grunow --- Dept Plantproduksie, N.F.G. Rethman --- Dept Plantproduksie,Die groei en produksie onder beweiding van ‘n aantal aangeplante weidings is met behulp van die verskilmetode bepaal. Uit die data verkry in die proef is dit duidelik dat indien daar besproeiingswater beskikbaar is, groen materiaal dwarsdeur die jaar voorsien... -
How economic are the farming units of Leliefontein, Namaqualand?
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: FionaM. Archer --- Department of Botany, Republic of South Africa M.T. Hoffman --- Department of Botany, Republic of South Africa J.E. Danckwerts --- Department of Agriculture (Eastern Cape Region), Republic of South AfricaNomadic pastoralism has been practised in Leliefontein for centuries. In 1984, the area was formally divided into 47 so‐called ‘economic units’ on the assumption that this agricultural approach would (a) promote development in the region and (b) introduce conservation management... -
A preliminary account of growth characteristics and seed germination of Cassia mimosoides L. in Dohne Sourveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: T.D. Steinke --- Department of Botany, Republic of South Africa L.O. Nel --- Department of Agriculture (Eastern Cape Region), Republic of South AfricaAn autecological study of Cassia mimosoides L., which invades mismanaged Dohne Sourveld, was initiated at the Agricultural Research Institute, Dohne. A study of the growth characteristics revealed that the nature of the root distribution enabled the plant to take up... -
“n Voorlopige evaluasie van eenjarige, wintergroen weidings met speenlammers, in die Oos‐Kaapse suurveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: T.G. Coetzee --- Departement van Landbou‐ontwikkeling (Oos‐Kaapstreek), Republiek van Suid‐Afrika G.R. Barnes --- Departement van Landbou‐ontwikkeling (Oos‐Kaapstreek), Republiek van Suid‐Afrika W.S.W. Trollope --- Agronomie Departement, Landboufakulteit, CiskeiA preliminary evaluation of annual, wintergreen pastures using weaned lambs in the eastern Cape sourveld. Animal production and feed availability on oats, vetch and oats/vetch pastures were evaluated under continuous grazing, at three stocking rates, using weaned lambs. The oats... -
The value of subtropical grass pastures for use as foggage on the eastern Transvaal Highveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N.F.G. Rethman --- , Republic of South Africa C.C. de Witt --- , Republic of South AfricaThe utilization of frosted herbage of Pennisetwn clandestinwn, Paspalum notation, Digitaria eriantha, Cynodon sp. and Chloris gayana by Merino wethers during the winter confirmed the potential of this practice as an alternative winter feeding strategy under Highveld conditions. P. clandestinwn... -
The production of four ryegrass cultivars oversown at various seeding rates into irrigated kikuyu
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.I. Harris --- Department of Agricultural Development, Republic of South Africa P.E. Bartholomew --- Department of Agricultural Development, Republic of South AfricaAn irrigated kikuyu pasture was oversown, in late March, with four ryegrass cultivars at four seeding rates at Cedara (Natal Mistbelt) and n'Tabamhlope (Highland Sourveld). The oversowing procedure shows promise with the cultivars producing well at both sites. There were... -
Effect of enzyme additives on kikuyu silage quality
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: M.C.V. de Figueiredo --- Department of Agricultural Development, Republic of South AfricaChopped kikuyu (Pennisetum clandestinum) grass of low digestibility and low in non‐structural carbohydrates was treated with three commercial enzyme preparations, namely, Celluclast, SP 249 and Silo Guard II. These enzymes were added to the kikuyu prior to ensiling in laboratory... -
The complemental role of dryland cultivated pastures in market‐related beef production from semi‐arid rangeland
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: L.G. duPisani --- Department of Agricultural Development, Republic of South Africa T.E. Skinner --- Department of Agricultural Development, Republic of South AfricaRangeland condition is a decisive factor in determining the income:cost ratio of production and hence in the profitability of any beef production enterprise. By maintaining and/or improving rangeland condition, the beef producer can buffer himself against low profitability. Cultivated pastures... -
The national grazing strategy of the Republic of South Africa Objectives, achievements and future challenges
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.F. du Toit --- Department of Agricultural Development, Republic of South Africa A.J. Aucamp --- , Republic of South Africa J.J. Bruwer --- Department of Agricultural Development, Republic of South AfricaOver the past few years various measures have been applied to address the problem of the retrogression of southern African rangelands. However, it has become apparent that many of these measures were ad hoc and not part of a long‐term... -
Veld management in the communal areas of Ciskei
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: R.G. Forbes --- Department of Livestock and Pasture Science, Ciskei W.S.W. Trollope --- Department of Livestock and Pasture Science, CiskeiVeld management in Ciskei is based predominantly on a communal land tenure system, and livestock is produced under a ‘Group Ranch’ system. Stocking rates are excessively high and consequently veld degradation is severe, resulting in a lowered carrying capacity and... -
A model for the evaluation of different production strategies for animal production from rangeland in developing areas: An overview
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: F.D. Richardson --- Department of Applied Mathematics, Republic of South Africa B.D. Hahn --- Department of Applied Mathematics, Republic of South Africa P.I. Wilke --- Department of Animal Science, Republic of South AfricaAn interactive user‐friendly computer package is being developed to assist planners and managers with the evaluation of different livestock production strategies in semi‐arid regions. It comprises a hierarchy of simulation models that predict over time the effects of past and... -
The Potch System: An approach to the management of semi‐arid grasslands in southern Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: R.H. Drewes --- Department of Agricultural Development, Republic of South AfricaA host of grassland management systems have been published and recommended. Whereas earlier approaches to grassland management emphasized the systematic resting aspect, the systems published since 1966 have tended to stress the degree of utilization of the grassland sward. In... -
Seasonal changes in nutrient content under three defoliation treatments in two coastal grassland communities of Transkei
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.M. Shackleton --- Department of Botany, Transkei M.T. Mentis --- Department of Botany, Republic of South AfricaChanges in nutrient concentrations were monitored over a two‐year period in two coastal grassland communities. Dry matter digestibility, crude protein, phosphorus, potassium, calcium and magnesium were determined from hand‐clipped samples of experimental treatments; namely, burning with and without subsequent grazing... -
Preferential utilization of pans by springbok (Antidorcas marsupialis)
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: S.J. Milton --- FitzPatrick Institute, Republic of South Africa W.R.J. Dean --- FitzPatrick Institute, Republic of South Africa C.P. Marincowitz --- , Republic of South AfricaForage utilization by springbok in pans and surrounding habitats was compared at one karroid shrubland site and two desert grassland sites and was found to be greater in pans than on adjacent plains and dunes. Springbok used pan areas for... -
Effects of animal activity on the absorption rate of soils in the southern Karoo, South Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: W.R.J. Dean --- FitzPatrick Institute, Republic of South AfricaThe rates of absorption into various microsites in Karoo soils were compared. The absorption of water by hard, bare intershrub soils was significantly increased by the presence of emergence holes of adult cicadas (Homoptera: Cicadidae) and near nest‐mounds of the... -
Soil-site relationships in the Roodepoort area, Transvaal
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.C. Munnik --- Department of Geography, E. Verster --- Department of Geography, T.H. van Rooyen --- Department of Geography,Fifty hillslope profiles with associated soils were examined in the Roodepoort area, Transvaal, to determine the relationships between soil and site characteristics, as well as the applicability of the toposequence concept. A mesoscale approach was adopted, which implied a relationship... -
Chemical control of some broadleaved weeds which grow during winter in untilled maize lands
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. E.L. Thomas --- Summer Grain Sub-Centre,Several experiments have been done at Cedara in attempts to control broadleaved weeds in unfilled lands during winter. A number of herbicide treatments were tested on Conyza spp., Coronopus didymus, Gnaphalium spp., Hypochoeris radicata, Oenothera rosea and Taraxacum officinale. Where... -
Evaluering van braakstelsels vir droëlandkoringverbouing in die Oranje-Vrystaat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Engelbrecht --- , Republiek van Suid-Afrika A.J. der Westhuizen --- , Republiek van Suid-Afrika G.D. Joubert --- , Republiek van Suid-AfrikaDrie produksiestelsels vir droëlandkoring is te Glen en Bethlehem geëvalueer. Die kortbraak was vyf tot ses maande, intermediêre-braak was 12 tot 13 maande en langbraak was 17 maande. Glen verteenwoordig 'n semi-ariede somerreëngebied waar die proefgrond 'n plantbeskikbare-waterstoorkapasiteit van 148... -
Soils derived from granite in two Mt. Garnet toposequences, North Queensland, Australia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Verster --- Department of Geography, Republic of South AfricaTwo toposequences derived from granite in the Mt. Garnet area, North Queensland, were examined to determine the detailed soil - landform relationships in order to facilitate subsequent broad-scale mapping of the soil resource. The dominant landsurface feature is gently sloping,... -
The yield potential and crude protein content of five rhizomatous and stoloniferous grass pastures in the escarpment areas of the eastern Transvaal
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. F.G. Rethman --- Athole Research Station, Department of Agriculture & Water Supply, Republic of South Africa C. C. de Witt --- Athole Research Station, Department of Agriculture & Water Supply, Republic of South AfricaWhilst Cynodon aethiopicus and the Cynodon hybrid, ‘Coast Cross II’, proved to be unsuited to the cool high rainfall conditions, Acroceras macrum, Pennisetum clandestinum and Digitarla scalarum were well adapted. There was little difference in yield potential between local and... -
Improved criteria for classifying hydric soils in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.C. Kotze --- Department of Grassland Science, Republic of South Africa J.R. Klug --- Department of Grassland Science, Republic of South Africa J.C. Hughes --- Department of Agronomy, Republic of South Africa C.M. Breen --- , Republic of South AfricaThere is an increasing awareness of the ecological and agricultural importance of hydric (wetland) soils. Because of the scarcity of information in South Africa, this study aimed to critically examine systems currently being applied to the hydric soils of South... -
The effect of clone type and method of transportation on oil yield from vegetative material of Eriocephalus punctulatus
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.N. Webber --- Department of Livestock and Pasture Science, Republic of South Africa M.L. Magwa --- Electron Microscope Unit, J. van Staden --- Department of Botany, University of Natal Pietermaritzburg, Republic of South AfricaEriocephalus punctulatus, also known as, ‘Kapok Bos’, belongs to the Asteraceae family. It is an attractively scented woody shrub, that reaches a height of about one metre. It produces a highly priced essential oil with a dark blue colour and... -
Rate and timing of nitrogen fertilizer applications on wheat grown under dryland and supplementary irrigation
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.A. Adjetey --- , Australia P. G.E. Searle --- , Australia L.C. Campbell --- , AustraliaField experiments were carried out at the University of Sydney Farm, to examine nitrogen fertilizer application strategies for increasing N uptake and productivity of wheat (Triticum aestivum L.) grown on a red-brown earth (Natrixeralf) in Australia, under dryland and supplementary... -
SOIL carbon and nitrogen in five contrasting biomes of South Africa exposed to different land uses
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.J. Mills --- Department of Soil Science, South Africa M.V. Fey --- Department of Soil Science, South AfricaStocks of soil C to a depth of 50 cm in untransformed, indigenous veld ranged from 21 t ha-1 in karoo to 168 t ha-1 in thicket and stocks of N ranged from 3.41 ha-1 in karoo to 12.8 t... -
Effects of sodium sulphate, sodium chloride and manganese sulphate on kikuyu (Pennisetum clandestinum) growth and ion uptake
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.J. Mills --- Department of Soil Science, South Africa M.V. Fey --- Department of Soil Science, South Africa C.E. Johnson --- Department of Civil and Environmental Engineering, USAIrrigation with saline water is increasingly practised yet an understanding of plant response to different salt types remains largely elusive. Our study investigated the effects of irrigation with simulated effluent containing three salts on the growth and composition of a... -
Phenotypic diversity for morphological and agronomic traits in traditional Ethiopian highland maize accessions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Beyene --- Department of Plant Sciences, A.M. Botha --- Department of Genetics, South Africa A.A. Myburg --- Department of Genetics, South AfricaFarmers in the highlands of Ethiopia have developed locally adapted maize varieties for more than 300 years. In order to assess the phenotypic diversity among traditional Ethiopian highland maize accessions, a total of 180 accessions were evaluated for agro-morphological traits... -
Comparative genetic analysis of highland maize inbred lines using AFLP and SSR markers
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B.W. Legesse --- , Ethiopia A.A. Myburg --- Department of Genetics & Forestry and Agricultural Biotechnology Institute (FABI), South Africa K.V. Pixley --- , A.M. Botha --- Department of Genetics & Forestry and Agricultural Biotechnology Institute (FABI), South AfricaThe objectives of the study were (1) to compare the informativeness of SSR and AFLP markers in genetic diversity analysis of highland maize inbred lines, and (2) to compare their effectiveness in classifying the inbred lines into heterotic groups. Thirty-two... -
Trace element concentrations in soils under different land uses in Mpumalanga Province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.E. Steyn --- , Republic of South Africa J.E. Herselman --- , Republic of South AfricaTrace element deficiencies and toxicities have become important aspects of land quality and are affected by the increased pressure on land from industrialisation and agricultural practices. The objective of the study was to determine if differences occur in trace element... -
Morphology and ultrastructure of glandular and nonglandular trichomes on the leaves of Athrixia phylicoides (Asteraceae)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Möller --- Department of Plant Production and Soil Science, Faculty of Natural and Agricultural Sciences, E.S. du Toit --- Department of Plant Production and Soil Science, Faculty of Natural and Agricultural Sciences, P. Soundy --- Department of Plant Production and Soil Science, Faculty of Natural and Agricultural Sciences, J. Olivier --- Department of Environmental Sciences,Athrixia phylicoides is one of many plants from the Asteraceae family used as a traditional herbal medicine. Pharmacological evaluation of leaf extracts confirmed that the plant has anti-inflammatory, antihypertensive, narcotic and analgesic properties. The medicinal properties of plants are often... -
Effect of indigenous storage method on performance of taro [Colocasia esculenta (L.) Schott] under field conditions in a warm subtropical area
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: AlbertT. Modi --- ,Successful crop stand establishment, a critical prerequisite for efficient crop production, is primarily determined by propagule quality. Taro [Colocasia esculenta (L.) Schott] corms of different sizes (80–100 g corm−1, 40–60 g corm−1 and 20–30 g corm−1) that had been stored... -
Soil organic matter and microbial biomass as influenced by sugar cane (Saccharum hybrid sp.) production practices in Mauritius
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.R. Ng Cheong --- , Mauritius K. F. Ng Kee Kwong --- , Mauritius C. C. Du Preez --- Department of Soil, Crop and Climate Sciences, South AfricaSugar cane has been grown in Mauritius for over 350 years in a monocropping system. As a result, soil quality could have declined since productivity has been stagnating over the last twenty years in spite of improved agronomic practices and... -
Relationships between plant and soil nutrient status and position in the landscape on Pellic Vertisols of Ethiopia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Lemma Gizachew --- , Ethiopia G.N. Smit --- Department of Animal, Wildlife and Grassland Sciences, South AfricaEffects of land use on soil nutrients and related soil parameters of Pellic Vertisols were assessed using soil samples collected from plots subjected to the cultivation of tef (Eragrostis tef) (TF) and grass pea (Lathyrus sativus) (GP) and native grassland... -
The effects of a water treatment residue on grain yield and nutrient content in seeds of common dry beans (Phaseolus vulgaris L. cv. Ghadra) grown in a dystrophic soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.W. Titshall --- , South Africa J.C. Hughes --- , South AfricaThis glasshouse study investigated the grain yield and nutrient content of seed of common dry beans (Phaseolus vulgaris L. cv. Ghadra) grown in a dystrophic sandy soil treated with 0, 50, 100, 200 and 400 g kg−1 water treatment residue... -
Soil water variability in the Weatherley grassland catchment, South Africa: I. Evapotranspiration
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa TB Zere --- Department of Soil, Crop and Climate Sciences, South Africa M Hensley --- Department of Soil, Crop and Climate Sciences, South AfricaEvapotranspiration (ET) is a major component of the soil water balance and therefore requires accurate determination to quantify catchment water yield. Six-year daily ET was determined at 300 mm depth intervals in the root zone of 28 soil profiles in... -
Advances in soil physics: Application in irrigation and dryland crop production
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.D. van Rensburg --- Department of Soil, Crop and Climate Sciences, South AfricaThis is the third soil physics review to be published in South African Journal of Plant and Soil. In the previous reviews the focus was broad and covered almost every aspect of the subject, providing a comprehensive list of contributions... -
Early establishment performance of local and hybrid maize under two water stress regimes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Mabhaudhi --- , Pietermaritzburg A.T. Modi --- , PietermaritzburgMaize (Zea mays L.) is the major grain crop in South Africa where most subsistence farmers still plant landraces. The objective of this study was to compare two landrace selections of maize with two hybrids popular among small-scale farmers in... -
Hydrological classification of orthic A horizons in Weatherley, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW van Huyssteen --- Department of Soil-, Crop- and Climate Science, South AfricaOrthic A horizons carry little interpretive, especially hydrological, value. This paper aims to elucidate the hydrological interpretation of orthic A horizons. Measured water contents in the orthic A horizons of 28 profiles in the Weatherley catchment of South Africa were... -
Carbon stocks in fynbos, pastures and vineyards on the Agulhas Plain, South Africa: a preliminary assessment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: AJ Mills --- Department of Soil Science, South Africa SC Birch --- , South Africa JD Stephenson --- , South Africa RV Bailey --- , South AfricaLarge tracts of fynbos on the Agulhas Plain are being converted to agriculture. Carbon (C) stocks in fynbos, pastures and vineyards were measured in this preliminary study to determine whether conservation of fynbos results in greater C storage relative to... -
Growth, phenological and yield responses of a bambara groundnut (Vigna subterranea (L.) Verdc.) landrace to imposed water stress under field conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Tafadzwanashe Mabhaudhi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa AlbertT Modi --- Crop Science, School of Agricultural, Earth and Environmental Sciences, South AfricaBambara groundnut (Vigna subterranea (L.) Verdc.) is an underutilised species with potential to contribute nutritional and food security in marginal areas. Growth, phenology and yield of a local bambara groundnut landrace from Jozini, KwaZulu-Natal, characterised into three selections according to... -
Entanglement of pinnipeds at Marion Island
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: G. J. G. Hofmeyr M. N. BesterDuring the period April 1991–March 1996, 10 entangled Antarctic fur seals Arctocephalus gazella, 28 entangled Subantarctic fur seals A. tropicalis and one entangled southern elephant seal Mirounga leonina were observed at Marion Island, Southern Ocean. Entanglement of fur seals was... -
Adaptability of great cormorants Phalacrocorax carbo in a coastal environment demonstrated by their exploitation of introduced prey species and use of artificial breeding sites
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: R. M. Randall C. Tregoning B. M. Randall A. P. MartinAn analysis of the contents of regurgitations of great cormorant Phalacrocorax carbo chicks at two coastal colonies in South Africa, one on an offhore island (St Croix) and the other at a saltworks in an estuary (Swartkops), revealed that the... -
Changes to regulations and the gear used in the South African commercial fishery for Jasus lalandii
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: D. S. Schoeman A. C. Cockcroft D. L. Van Zyl P. C. GoosenAlterations to the operational fishing gear used in the South African west coast rock lobster Jasus lalandii fishery and their resultant impacts are investigated. The most important developments have been: (i) a change during the 1960s from hand-hauled hoopnets to... -
Trap selectivity and the effects of altering gear design in the South African rock lobster Jasus lalandii commercial fishery
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: D. S. Schoeman A. C. Cockcroft D. L. Van Zyl P. C. GoosenThe current trap fishery for the West Coast rock lobster Jasus lalandii in South African waters results in the capture, sorting and release of large numbers of undersized animals. Once removed from the water, they are vulnerable to damage from... -
AQUATIC MACROPHYTE COMMUNITIES OF THE WILDERNESS LAKES: COMMUNITY STRUCTURE AND ASSOCIATED ENVIRONMENTAL CONDITIONS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Clive Howard-Williams --- , South AfricaThe structure and summer biomass (g m−2 dry mass) of the principal aquatic macrophyte communities of the Wilderness Lakes were measured. Both emergent and submerged communities were included in the study. Productivity estimates were made by multiplying biomass by production/biomass... -
A SYSTEM DYNAMICS MODEL OF PART OF THE PONGOLO RIVER FLOODPLAIN: DEVELOPMENT AND WATER MANAGEMENT POLICY ANALYSIS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: A.K. Drewes --- ,The issue of allowing the Liming, duration and magnitude of a flood release to be determined by man has led to a wide spectrum of viewpoints as to which values of these parameters are most suitable for the Pongolo River... -
DISTRIBUTION AND ABUNDANCE OF THE BENTHOS IN THE SEDIMENTS OF LAKE CUBHU: A FRESHWATER COASTAL LAKE IN ZULULAND SOUTH AFRICA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D.P. Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South Africa T.J. Martin --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaA preliminary investigation of the macrobenthic invertebrates of the sediments of Lake Cubhu, a freshwater coastal lake near Richards Bay was conducted on a quarterly basis during 1987. The most important factor which determined the abundance and distribution of each... -
DISTRIBUTION AND DIVERSITY OF MKUZE SWAMP FISHES DURING A SUMMER FLOOD
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: PH Skelton --- , South Africa AK Whitfield --- , South Africa N P E James --- , South AfricaVery little information is available on the fishes of the Mkuze swamps and this paper presents the results of an ichthyofaunal survey conducted in March 1988. The study, which coincided with a major river flood, determined that the fish fauna... -
THE DISTRIBUTION OF WETLANDS IN THE SOUTH-WESTERN CAPE PROVINCE, SOUTH AFRICA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M.J. Silberbauer --- Department of Water Affairs and Forestry, South Africa J.M. King --- Freshwater Research Unit, Zoology Department, South AfricaThe hydrological and habitat value of wetlands is beginning to be recognised in South Africa, but only in parts of Natal Province has an effort been made to map wetlands and to record their status over large areas. While the... -
GEOGRAPHICAL TRENDS IN THE WATER CHEMISTRY OF WETLANDS IN THE SOUTH-WESTERN CAPE PROVINCE, SOUTH AFRICA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M.J. Silberbauer --- Department of Water Affairs, South Africa J.M. King --- Freshwater Research Unit, Zoology Department, South AfricaAlthough it is becoming increasingly important for the aquatic chemistry of wetlands to be understood, little chemical information is available for the wetlands of South Africa. During a project aimed at beginning to redress this gap in our knowledge, conductivity... -
AN HOLISTIC APPROACH TO THE MANAGEMENT OF WATER QUALITY IN FALSE BAY, CAPE TOWN, SOUTH AFRICA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: A. J.R. Quick --- Town Planning Branch, Cape Town City Council, South AfricaAn overview of the water quality status of False Bay identified the bacterial/viral water quality of stormwater and rivers discharging near contact recreation beaches to be the management concern of highest priority. A second water quality concern is the potential... -
CHANGES IN URBAN RESIDENTIAL LAND IN THE RIETSPRUIT CATCHMENT, SOUTHERN TRANSVAAL
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M.J. Silberbauer --- Department of Water Affairs, South Africa J. Moolman --- Department of Water Affairs, South AfricaInformal settlements have become an important and rapidly-expanding component of urban development in South Africa. In the Rietspruit catchment, south-west of Johannesburg, average growth rates in urban land cover of up to 2.7 km2 per year (1972–1991) were measured from... -
FUNDUDZI, A UNIQUE, SACRED AND UNKNOWN SOUTH AFRICAN LAKE
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: B. C.W. van der Waal --- , ,Lake Fundudzi is a unique, small inland lake in the north eastern region of South Africa, formed by a landslide. The considerable sedimentation of its basin indicates an age in the order of 10 000s of years. It forms the... -
PRELIMINARY OBSERVATIONS ON THE FISH POPULATIONS OF THE RECENTLY-IMPOUNDED KATSE RESERVOIR, LESOTHO
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: D. Tweddle --- , South Africa M. T.T. Davies --- , , South AfricaKatse is a new 35 km long impoundment on the Malibamatso River, a highland tributary of the Orange River in Lesotho. Two fishing surveys in 1996 yielded Barbus aeneus, Labeo capensis, Oncorhynchus mykiss and the occasional Austroglanis sclateri. Length frequency... -
A LIMNOLOGICAL PROFILE OF THE UPPER OKAVANGO DELTA AT LOW WATER LEVEL
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: Rob C. Hart --- ,Selected limnological attributes of the Okavango Delta panhandle were measured during a brief summer survey of “open-water” habitats extending from the permanent mainstream channel, through contiguous off-channel lagoons and still backwaters, to seasonally isolated floodplain lagoon and temporary pool biotopes... -
Mixed livestock grazing in diverse temperate and semi-arid environments
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T. Nolan J. Connolly C. Sall J. CesarThe need for an annual increase of 2% in global food production demands knowledge on how best to use natural grazing land resources. Taken with the requirement to protect resources, this need creates conflicting demands on grazing land management. Concerns... -
Patterns of seed production and shrub association in two palatable Karoo shrub species under contrasting land use intensities
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S.W. ToddSeed production and shrub association patterns of the two palatable shrubs. Tripteris sinuatum and Tetragoma froticosa were investigated on heavily grazed communal and lightly grazed commercial rangeland in the succulent karoo, Namaqualand. Seed production in both these species was substantially... -
Correlates of stocking rate and overgrazing in the Leliefontein Communal Reserve, central Namaqualand
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S.W. Todd M.T. HoffmanWe investigate the correlates of stocking rate in the Leliefontein communal reserve and attempt to provide a mechanistic explanation of the controlling factors. We further speculate on how high stocking rates are maintained in relation to the current state of... -
Effects of fire, bruchid beetles and soil type on germination and seedling establishment of Acacia drepanolobium
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: B.D. Okello T.P. YoungThe effects of fire, bruchid seed beetles and soil type on the germination and seedling establishment of Acacia drepanolobium were experimentally investigated. Seeds subjected to three seed treatments (bruchid damaged, bruchid-free burnt, and bruchid-free unburned) were germinated in three different... -
Grazing behaviour and diet selection of Barotse cattle on a communally grazed floodplain in west Zambia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: RMT Baars JJ OttensGrazing behaviour and diet selection of cattle were studied on a communally grazed floodplain and its adjacent wooded uplands in western Zambia to identify the interaction between basic herd management practices, foraging behaviour and body condition of cattle. On average,... -
The quantification of grazing capacity from grazing — and production values for forage species in semi-arid grasslands of southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: HC van der Westhuizen HA Snyman WLJ van Rensburg JHJ PotgieterThe relation between rangeland condition and grazing capacity was determined along a degradation gradient. In studying agronomic values of forage species, the average production per tuft was combined with its grazing preferences, to link grazing values for species in the... -
Quantified range condition assessment of open Camelthorn savanna along a degradation gradient
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: I Zimmermanno FP Graz MH Berry NNT Imasiku ND Muroua MM Sibalatani CS SikopoMeasurements were taken at 20 different sites in a relatively homogenous area of open Camelthorn savanna in eastern Namibia. Ordination of grass species composition did not provide a good degradation gradient, due to domination by different species of annual grasses... -
Production and decomposition of plant litter in an arid rangeland of Kenya
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: WN Ekaya JI KinyamarioData on litter production and decomposition in an arid rangeland in Kenya was collected over a two-year period. Utter sampling was carried out at monthly intervals using a rectangular 0.25m−2 quadrat frame. Utter within the quadrats was handpicked and washed... -
Tree canopies facilitate invasion of communal savanna rangelands by Lantana camara
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J G Rodger W C TwineThis study investigated pattern in the distribution of the alien invasive shrub, Lantana camara L., in communal versus conservation land-use in a lowveld savanna. Pattern was investigated relative to land-use type, and sub- or inter-canopy micro-sites. Lantana was significantly more... -
Ecological effects of fire-breaks in the montane grasslands of the southern Drakensberg, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: TG O'Connor RG Uys AJ MillsFire-breaks, by legislation, are burnt annually before mid-winter in the southern Drakensberg, affecting 5–10% of the landscape, and resulting in marked selection for the early season flush by both livestock and wildlife. This study investigated whether this severe defoliation regime... -
Seasonal botanical and chemical composition of sheep and goat diets on a common range in eastern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: RobinsonK Ngugi JosephN Ndung'u DicksonM Nyariki NashonKR MusimbaThe botanical and chemical composition, intake and digestibility of local sheep (Ovis aries) and goat (Capra hirtus) diets were evaluated over the wet (growing) and dry (dormant) seasons. Diet botanical composition was related to the vegetation composition on the range... -
Soil seed bank evaluation and seedling establishment along a degradation gradient in a semi-arid rangeland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: HA SnymanThe effects of rangeland degradation on the size and species composition of the seed bank and seedling establishment in the field were quantified over a two year period (2000–2001 and 2001–2002 growing seasons). Soil seed bank sampling was carried out... -
Aboveground phytomass productivity and morphological variability of Tunisian accessions of Cenchrus ciliaris L.
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Khalil Mseddi Lobna Mnif Mohamed Chaieb Mohamed Neffati Maurice RouxThis study assessed the aboveground aerial phytomass produced by 47 accessions of Cenchrus ciliaris L. locally collected in the arid zone of Tunisia and classified into six eco-geographic groups. The extent of genetic variation in five morphologic parameters was examined... -
Maasai Mara — an ecosystem under siege: an African case study on the societal dimension of rangeland conservation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: John Waithaka'Let me assure you all that our commitment to the preservation of wildlife and the habitat in the Maasai Mara reserve is total. We do not deny that the reserve is of vital economic importance to us, but we also... -
Remote sensing and change detection in rangelands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AnthonyR. Palmer Alex FortescueDuring the 20 th century, we have witnessed an improvement in the quality of imagery available for rangeland auditing, from the earliest mono-chromatic aerial photographs, followed by the first infra-red images, to the abundance of high resolution, multi-spectral imagery currently... -
Scale, heterogeneity and secondary production in tropical rangelands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Andrew Ash John Gross Mark Stafford SmithTropical rangelands across the world are experiencing land use intensification pressures which are reducing the spatial scale of grazing management units. There are implications of a reduction in scale on environmental heterogeneity and its relationship with secondary production of large... -
A comparison of the effects of different rangeland management systems on plant species composition, diversity and vegetation structure in a semi-arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M Smet D WardMost of South Africa's land surface is arid or semi-arid rangeland. Three management systems exploit these areas: commercial livestock ranching, communal livestock ranching and game ranching. The ways in which these management systems affect rangeland ecology is contentious due to... -
Do we understand the causes of bush encroachment in African savannas?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: D WardBush encroachment affects the agricultural productivity and biodiversity of 10–20 million ha of South Africa. Many people believe that we understand the causes of bush encroachment. We do not. Many people believe that either fire or heavy grazing by domestic... -
Tackling 'the most avoided issue': communal rangeland management in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MI PedenDemocratisation in 1994 resulted in a shift in state focus from white commercial farmers to small-scale and subsistence black farmers living in communal areas in South Africa. The LandCare Program of the National Department of Agriculture aimed to improve productivity... -
The extent of grass species composition in Braklaagte, Zeerust District, North-West Province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: PW Malan S Van NiekerkGrassland retrogression in tribal areas is evident. Long-term overgrazing by livestock plays an important role in grassland retrogression. Palatable species are the first to disappear and are then followed by the non-palatable species. Mismanagement and the incorrect grazing strategies by... -
Effects of land tenure, geology and topography on vegetation and soils of two grassland types in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S Vetter WM Goqwana WJ. Bond WW TrollopeA national degradation audit conducted in South Africa in the late 1990s found communal land tenure to be the strongest predictor of vegetation and soil degradation, while abiotic factors such as geology, slope and aspect were also correlated with degradation... -
Brushpiles and dung as rehabilitation patches: effect on soil resources in degraded succulent thicket, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: WB Todkill GIH Kerley EE CampbellA substantial portion of the Thicket Biome in the Eastern Cape has been transformed by overgrazing. An experimental rehabilitation study of degraded succulent thicket was initiated to determine whether increasing the patchiness on the landscape would result in an increase... -
Rangeland condition and trend in the semi-arid Borana lowlands, southern Oromia, Ethiopia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Gemedo-Dalle BL Maass J IsselsteinRangeland condition assessment was conducted in the Borana lowlands, southern Ethiopia to determine the current status and future trend of the grazing land with emphasis on comparing different functional land use units, called Kalo, Worra and Foora. An approach that... -
Livestock utilisation of grass species at different distances from water on both traditional cattle post and ranch management systems in Botswana
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: WN Mphinyane NFG RethmanIndividual forage species were appraised in varying distances along transects radiating from the water points of the ranch and traditional cattle post management systems. Measurements of plant height were used to assess the degree of forage species utilisation by livestock... -
Pilot survey to assess sample size for herbaceous species composition assessments using a wheel-point apparatus on the Zululand coastal plain
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: BH BrockettA pilot survey to determine sub-sample size (number of point observations per plot) for herbaceous species composition assessments, using a wheel-point apparatus applying the nearest-plant method, was conducted. Three plots differing in species composition on the Zululand coastal plain were... -
Dry matter yield and water use efficiency of five perennial subtropical grasses at four levels of water availability
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: D Marais N Rethman J AnnandaleThe effect of four levels of water availability on the yield and water use efficiency (WUE) of five subtropical perennial grasses was evaluated in a small plot trial under a rain shelter. The soil profiles were brought to 100% (W4... -
Using rain-use efficiency to explore livestock production trends in rangelands in the Transkei, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AR Palmer A AinslieWe qualitatively describe the condition of communally managed rangelands in the Transkei, South Africa, using GIS and high resolution near-infrared imagery. Using livestock census data from 28 magisterial districts in the Transkei, we explored the trends in livestock biomass from... -
Effects of season and frequency of burning on soils and landscape functioning in a moist montane grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AD Manson D Jewitt AD ShortThe effects of burning on soil properties and landscape function were investigated in a long-term experiment comparing different burning strategies in a moist montane grassland. Total C, total N, total S, bulk density, plant-available nutrients, and soil acidity were determined... -
The effect of long-term fire treatments on invertebrates: results from experimental plots at Cathedral Peak, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C Uys M HamerThis study examined the impacts of different burning regimes (fire frequency and season) and fire history (time since last burn) on invertebrate morphospecies richness and abundance. The study was carried out in the Brotherton experimental plots at Cathedral Peak in... -
Effects of herbivore exclosures on variation in quality and quantity of plants among management and habitat types in a semiarid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KR Mbatha --- Department of Conservation Ecology, South Africa D Ward --- School of Biological and Conservation Sciences, South AfricaThe effects of grazing on plant biomass, plant quality, species evenness, species diversity and species composition were determined among management types (communal, commercial and game) and among habitat types (open savanna, rocky and pan) in a semiarid savanna in South... -
Effects of previous cultivation on regeneration of Julbernadia globiflora and Brachystegia spiciformis in grazing areas of Mupfurudzi Resettlement Scheme, Zimbabwe
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T Chinuwo --- Faculty of Agriculture, Science and Technology, South Africa E Gandiwa --- , Zimbabwe PH Mugabe --- Institute of Environmental Studies, Zimbabwe IDT Mpofu --- Animal Science Department, Faculty of Agriculture and Natural Resources, Namibia E Timpong-Jones --- College of Agriculture, Agricultural Research Centre, GhanaWe investigated the effects of previous cultivation on regeneration potential under miombo woodlands in a resettlement area, a spatial product of Zimbabwe's land reforms. We predicted that cultivation would affect population structure, regeneration, recruitment and potential grazing capacity of rangelands... -
The effect of defoliation and competition on the regrowth of Themeda triandra and Aristida junciformis subsp. junciformis
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C.D. Morris --- Agricultural Research Council, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaThe effects of a cutting trial, conducted to study the combined influence of defoliation and competition from surrounding vegetation on the vigour of Themeda triandra and Aristida junciformis, were evident after the single season of treatment implementation. Aristida junciformis was... -
The relation between herbivore density and relative resource density at the landscape level: Kudu in semi‐arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C. Fabricius --- , Republic of South AfricaEcological theory can help range scientists to understand the determinants of ecological animal density or, in range management terms, ‘carrying capacity’. The relation between the relative density of resources and herbivore density is illustrated by regressions of the ecological density... -
Towards identifying the fate of 15N applied in spring as ammonium nitrate fertiliser to a kikuyu pasture
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G.D. Hefer --- Department of Grassland Science, Republic of South Africa D.C. Pretorius --- Department of Grassland Science, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaNitrogen was applied as ammonium nitrate in solution to kikuyu pasture at 225 kg N ha‐1, split into three equal dressings and applied in October, December and February. The first, at 75 kg N ha‐1 was labelled in the ammonium... -
Small‐scale reseeding trials in arid rangeland: Effects of rainfall, clearing and grazing on seedling survival
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S.J. Milton --- FitzPatrick Institute, Republic of South AfricaSeeds of four indigenous plant species were sown in 1990 in small‐scale field trials in an arid, non‐seasonal rainfall region of the southern Karoo, South Africa. Seeds of a winter annual Tetragonia echinata (Aizoaceae) showed innate dormancy but those of... -
Implications of changes to the transhumance system for conservation of the mountain catchments in eastern Lesotho
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T. Quinlan --- Institute for Social and Economic Research, Republic of South Africa C.D. Morris --- Agricultural Research Council, Republic of South AfricaThe mountain catchments above 2 750 m a.s.l. in eastern Lesotho are a proclaimed Managed Resource Area (MRA) as a result of official concern about degradation of the grasslands of the alpine belt, and of recent parastatal interventions in the... -
Perspective: Improvement in rangeland condition of the Flooding Pampa of Argentina through controlled grazing
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: V.A. Deregibus --- Faculty of Agronomy, Argentina E. Jacobo --- Faculty of Agronomy, Argentina A. Rodriguez --- Faculty of Agronomy, ArgentinaThe Flooding Pampa grasslands situated in temperate Argentina were ungrazed historically, but now support primarily breeding herds of cattle. These extensive, flat, infertile grasslands experience seasonal floods. Although summer droughts are usual, grasses maintain productivity during the entire year and... -
Effect of management factors on tiller dynamics in tall fescue: Tiller initiation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: R.L. Phillips --- KwaZulu‐Natal Department of Agriculture, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South Africa J.D.H. Reusch --- , Republic of South Africa D.E.A. Cumming --- Department of Grassland Science, Republic of South AfricaThe effect of plant density (row spacing / seeding rate), nitrogen (N) fertilization, cultivar choice and close‐down date on tiller initiation in tall fescue (Festuca arundinacea Schreb.), managed for seed production, was examined over two years. In the first season,... -
Effect of management factors on tiller dynamics in tall fescue: Tiller mortality
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: R.L. Phillips --- KwaZulu‐Natal Department of Agriculture, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South Africa J.D.H. Reusch --- , Republic of South Africa D.E.A. Dimming --- Department of Grassland Science, Republic of South AfricaThe effect of plant density (row spacing / seeding rate), cultivar choice, nitrogen (N) fertilization and close‐down date on tiller mortality in a dual purpose (forage and seed) tall fescue (Festuca arundinacea Schreb.) sward was examined over a two‐year period... -
Effect of management factors on tiller dynamics in tall fescue: Numbers of tillers reaching reproductive maturity
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: R.L. Phillips --- KwaZulu‐Natal Department of Agriculture, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South Africa J.D.H. Reusch --- , Republic of South Africa D.E.A. Cumming --- Department of Grassland Science, Republic of South AfricaThe effect of plant density (row spacing / seeding rate), cultivar choice, nitrogen (N) fertilization and close‐down date on the number of reproductive tillers surviving to maturity in tall fescue (Festuca arundinacea Schreb.) was examined over a two‐year period. A... -
Responses of productive and unproductive kikuyu pastures to top‐dressed nitrogen and phosphorus fertiliser
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: N. Miles --- KwaZulu‐Natal Department of Agriculture, Republic of South AfricaIn South Africa there is widespread reliance on kikuyu grass as a source of summer forage for intensive dairy, beef and sheep enterprises. There is, however, a dearth of reliable information on the fertility requirements of kikuyu pastures. Responses of... -
Soil nutrient ecology associated with Acacia sieberana at different tree densities in a South African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C. Roos --- Department of Terrestrial Ecology and Nature Conservation, The Netherlands N. Allsopp --- ARC Range and Forage Institute, c/o Botany Department, Republic of South AfricaThree aspects of soil nutrient ecology in an Acacia sieberana savanna were studied. First, information was collected about the effects of the savanna tree species Acacia sieberana on soil fertility, in terms of isolated tree effects and in terms of... -
Perspective article: Simulation models for semi‐arid rangelands of southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T. Wiegand --- Department of Ecological Modelling, Germany F. Jeltsch --- Department of Ecological Modelling, Germany S. Bauer --- Department of Ecological Modelling, Germany K. Kellner --- Department of Plant‐ and Soil Sciences, South AfricaIn semi‐arid regions, the effects of grazing or sparing management on natural communities of long‐lived plants generally take decades to become evident. Event‐driven dynamic behaviour, unpredictable and low rainfall, and complicated interactions between species make it difficult to gather sufficient... -
Physicochemical characteristics of communal rangeland soils along two defined toposequences in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MS Lesoli --- Department of Livestock and Pasture Science, South Africa S Dube --- Department of Livestock and Pasture Science, South Africa AO Fatunbi --- Agricultural and Rural Development Research Institute, South Africa B Moyo --- Department of Livestock and Pasture Science, South AfricaTo proffer a sustainable solution to rangeland degradation, an understanding of the innate soil properties is vital. This study investigated the relative association of surface (0–20 cm) soil physicochemical properties, viz. electrical conductivity, cation exchange capacity (CEC), soil organic carbon,... -
Landscape-level differences in fire regime between block and patch-mosaicburning strategies in Mkuzi Game Reserve, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: CM Mulqueeny --- , South Africa PS Goodman --- , South Africa TG O'Connor --- School of Animal, Plant and Environmental Sciences, South AfricaPatch-mosaic burning (PMB) is commonly advocated to create a mosaic of fire regimes that is believed to be more beneficial for maintaining biodiversity than the relatively homogeneous environment produced by block burning. This premise was examined for the 23 651... -
Biomass production and water use efficiency of grassland in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AR Palmer --- , South Africa A Short --- , South Africa IAM Yunusa --- , AustraliaUsing the results from a long-term grazing trial in the Dry Highland Sourveld of the KwaZulu-Natal province, we prepared a water use efficiency value (the ratio of the increment in annual biomass to total annual evapotranspiration) for this rangeland type... -
Botanical composition, yield and nutritional quality of grassland in relation to stages of harvesting and fertiliser application in the highlands of Ethiopia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Z Tessema --- Department of Animal Sciences, Ethiopia A Ashagre --- , Ethiopia M Solomon --- Debre Zeit Agricultural Research Centre, EthiopiaLivestock production contributes to the livelihoods of the Ethiopian people; however, the productivity of the livestock subsector in the highlands is low due to malnutrition. Therefore, this study assessed the botanical composition, dry matter (DM) yield, chemical composition and in... -
Intra-annual variation of arthropod-plant interactions and arthropod trophic structure in an endangered grassland in the Free State province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F Buschke --- Centre for Environmental Management, South Africa M Kemp --- Centre for Environmental Management, South Africa M Seaman --- Centre for Environmental Management, South Africa S Louw --- Department of Zoology and Entomology, South AfricaArthropods are valuable biological indicators owing to strong relationships with primary producers. The supposition that arthropod-plant interactions are constant over seasons was tested using Mantel tests on correlations between these groups. A total of 78 plant species and 108 arthropod... -
Detecting the onset of rangeland degradation using soil respiration and boundary lines: preliminary findings from the Nama Karoo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: A Mills --- Department of Soil Science, South Africa M Fey --- School of Earth and Environment, Australia B Kgope --- , South Africa J Donaldson --- , South Africa J de W Bosenberg --- , South AfricaMean annual soil respiration correlates with net primary productivity and therefore provides an indication of ecosystem functioning. Soil respiration, however, varies considerably in space and time owing to the influence of factors such as soil nutrient content, temperature and water... -
Effect of a single fire on woody vegetation in Catchment IX, Cathedral Peak, KwaZulu-Natal Drakensberg, following extended partial exclusion of fire
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AD de Villiers --- Animal, Plant and Environmental Sciences, South Africa T O'Connor --- Grassland Node, South AfricaFire is a key driver in shaping and maintaining grasslands. Long-term exclusion of fire in moist grasslands has been attempted at Catchment IX (CIX) at Cathedral Peak since 1952. Vegetation was surveyed in 1952, 1973, 1986 and 2009. Woody colonisation... -
Impact of Prosopis (mesquite) invasion and clearing on the grazing capacity of semiarid Nama Karoo rangeland, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T Ndhlovu --- Department of Conservation Ecology and Entomology, South Africa SJ Milton-Dean --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa KJ Esler --- Department of Conservation Ecology and Entomology, South AfricaWe assessed the impact of Prosopis invasion and clearing on the grazing capacity of heavily grazed Nama Karoo rangeland in the Beaufort West district of the Western Cape province of South Africa. Invasion (c. 15% Prosopis canopy cover) reduced grazing... -
Impacts of high utilisation pressure on biodiversity components in Colophospermum mopane savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MC Rutherford --- SANBI, Applied Biodiversity Research Division, South Africa LW Powrie --- SANBI, Applied Biodiversity Research Division, South Africa DI Thompson --- NRF/SAEON, South AfricaThis study aimed to quantify and evaluate the effects of heavy land utilisation, mainly grazing, on plant species richness and diversity, species abundance, vegetation structure and soil characteristics in a communal area in Colophospermum mopane dominated savanna in southern Africa... -
Challenges and opportunities in the use of remote sensing for C3 and C4 grass species discrimination and mapping
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C Adjorlolo --- School of Agriculture, Earth and Environmental Sciences, South Africa O Mutanga --- School of Agriculture, Earth and Environmental Sciences, South Africa MA Cho --- School of Agriculture, Earth and Environmental Sciences, South Africa R Ismail --- School of Agriculture, Earth and Environmental Sciences, South AfricaChanges in the composition of plant functional type (PFT) activities are expected to accompany a changing climate. In tropical montane grasslands, such changes are predicted to follow shifts in the percentage cover and abundance of species following the C3 and... -
Herbaceous plant species richness and composition in moist Midlands Mistbelt Grasslands in KwaZulu-Natal: is there a relationship to veld condition?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P Ngwenya --- , South AfricaThis study investigated the relationship between grazing veld condition and herbaceous plant species richness in the moist Midlands Mistbelt Grassland in KwaZulu-Natal. The observed herbaceous plant species richness and composition of 12 sample plots (50 m × 50 m) was... -
The influence of Pechuel-Loeschea leubnitziae (wild sage) on grass sward and soil seed bank composition
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MJ Tedder --- Grassland Science, School of Life Sciences, South Africa KP Kirkman --- Grassland Science, School of Life Sciences, South Africa CD Morris --- Agricultural Research Council, c/o School of Life Sciences, South Africa WSW Trollope --- Research and Development, South Africa MC Bonyongo --- Okavango Research Institute, BotswanaSoil seed banks provide not only a historical record of vegetation composition but also the potential for post-disturbance revegetation. Pechuel-Loeschea leubnitziae (wild sage) is a multistemmed, aromatic shrub, occurring in Namibia, Botswana, Swaziland, Zimbabwe and the northern regions of South... -
Development and sustainable management of rangeland commons – aligning policy with the realities of South Africa's rural landscape
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Susanne Vetter --- Department of Botany, South AfricaPolicy affecting the rangeland commons in South Africa has been based largely on management models developed for large-scale commercial farming. This paper examines the current policy situation and discusses some of the most pervasive ecological and economic assumptions that have... -
Wildlife or livestock? New directions for developing communal rangelands in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Petronella Chaminuka --- Department of Agricultural Economics, South AfricaThe paper agrees with three fundamental points raised by Vetter (in this issue), whilst highlighting an emerging trend in wildlife land use, which should be considered in policy making. Firstly, the paper supports the argument that communal rangelands are important... -
Multiple strategies for resilient livelihoods in communal areas of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Wayne Twine --- School of Animal, Plant and Environmental Sciences, South AfricaLivestock farming in communal areas is an activity pursued by rural households as one of a range of livelihood strategies aimed at spreading risk. The cash and non-cash benefits derived from livestock, as well as the wide range of secondary... -
Livestock and the rangeland commons in South Africa's land and agrarian reform
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Ruth Hall --- Institute for Poverty, Land and Agrarian Studies, South Africa Ben Cousins --- Institute for Poverty, Land and Agrarian Studies, South AfricaLand and agrarian reform has the potential to expand South Africa's rangeland commons and enhance their contribution to the livelihoods of the rural poor, yet to a large extent this has been an opportunity missed. Shifting policy agendas have prioritised... -
The sociocultural contexts and meanings associated with livestock keeping in rural South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Andrew Ainslie --- School of Agriculture, Policy and Development, UKThis paper complements Vetter's position paper, ‘Development and sustainable management of rangeland commons – aligning policy with the realities of South Africa's rural landscape’ (Vetter in this issue). It seeks to advance the debate regarding the contemporary nature of livestock... -
Institutions and governance of communal rangelands in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JamesE Bennett --- Department of Geography, Environment and Disaster Management and Centre for Agroecology and Food Security, UKThe creation of local institutions with a mandate over land access and control is seen as a prerequisite for successful decentralisation of land tenure and effective local resource management in sub-Saharan Africa. However, with land tenure reform in South Africa... -
The ‘youth and agriculture’ problem: implications for rangeland development
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MelvinB Swarts --- Agricultural Research Council–Animal Production Institute, c/o Department of Biodiversity and Conservation Biology, South Africa Michael Aliber --- Institute for Poverty, Land and Agrarian Studies, South AfricaThere is a common perception in South Africa that the youth are not interested in agriculture, leading to two concerns: first, that this is exacerbating the youth unemployment crisis, and second, that the already low levels of agricultural activity in... -
Degradation of communal rangelands in South Africa: towards an improved understanding to inform policy
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AnthonyR Palmer --- , South Africa JamesE Bennett --- Department of Geography, Environment and Disaster Management and Centre for Agroecology and Food Security, UKIn South Africa, the relative extent of range degradation under freehold compared to communal tenure has been strongly debated. We present a perspective on the processes that drive rangeland degradation on land under communal tenure. Our findings are based on... -
How could herd mobility be used to manage resources and livestock grazing in semi-arid rangeland commons?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Igshaan Samuels --- Agricultural Research Council–Animal Production Institute, c/o Botany and Conservation Biology Department, South Africa Nicky Allsopp --- , South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South AfricaPastoralists in Namaqualand, South Africa, use herd mobility to manage livestock and rangeland resources. However, their socioeconomic conditions and ecological landscapes are changing and we explore the options that are available for pastoralists to respond to these changes. This paper... -
The good shepherd: remedying the fencing syndrome
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Monique Salomon --- Farmer Support Group, South Africa Clement Cupido --- Agricultural Research Council–Animal Production Institute, c/o Department of Biodiversity and Conservation Biology, South Africa Igshaan Samuels --- Agricultural Research Council–Animal Production Institute, c/o Department of Biodiversity and Conservation Biology, South AfricaIn this paper the use of fenced grazing camps to manage the rangeland commons is challenged. A historical perspective is presented on fencing and rotational grazing in South Africa. Two case studies in KwaZulu-Natal and the Northern Cape illustrate the... -
Reshaping women's land rights on communal rangeland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Karin Kleinbooi --- Institute for Poverty, Land and Agrarian Studies, South AfricaThis paper aims to contribute to the debates on communal rangelands and analyses the gendered dimension of land rights and land access in the rural areas of Namaqualand. The actual gender relations within rural communities and the emergence of strategies... -
Reforming communal rangeland policy in southern Africa: challenges, dilemmas and opportunities
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Martin Adams --- , UKIn the savanna rangelands of southern Africa, the debate about land reform tends to be about the redistribution of formerly freehold ranches and fencing-off the rangeland commons into ranches for better-off African farmers. The position of those who favour privatisation... -
Themeda triandra: a keystone grass species
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Hennie A Snyman --- Animal, Wildlife and Grassland Sciences, South Africa Lachlan J Ingram --- Plant Breeding Institute, Faculty of Agriculture and Environment, Australia Kevin P Kirkman --- Grassland Science, South AfricaThemeda triandra is a perennial tussock grass endemic to Africa, Australia and Asia. Within these regions it is found across a broad range of climates, geological substrates and ecosystems. Because it is widespread across these areas it has great economic... -
Identifying key grazing indicators to monitor trends in the veld condition of Lambert's Bay Strandveld, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nelmarie Saayman --- Directorate: Plant Science, South Africa Craig Morris --- Agricultural Research Council–Animal Production Institute, South Africa Hannes Botha --- Directorate: Plant Science, South AfricaCurrently, the methods used to assess the veld condition of the Lambert's Bay Strandveld along the West Coast of South Africa require that the operator knows all the plants encountered in the survey area. In this study data were collected... -
The effect of long-term mowing and ungulate exclusion on grass species composition and soil nutrient status on the Athi-Kapiti plains, central Kenya
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: D. Berliner J. KiokoThe long-term (>30 years) impacts of mowing (for hay-making) and ungulate exclusion, on natural, unfertilised rangelands were investigated. Changes in grass species composition and soil nutrient status were measured The study site, situated on the Athi-Kapiti plains of central Kenya,... -
A description of rangeland on commercial and communal land, Peddie district, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L.N. Kiguli A.R. Palmer A.M. AvisAnalysis of a Landsat TM image from a rangeland near Peddie, Eastern Cape, revealed differences in two vegetation indices (normalised difference vegetation index, NDVI, and moving standard deviation index, MSDI) between communal and commercial rangeland. It was suggested that the... -
The effect of harvesting operations, slash management and fertilisation on the growth of a Eucalyptus clonal hybrid on a sandy soil in Zululand, South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: ColinW Smith Ben du ToitHarvesting operations during clearfelling and extraction of timber from commercial plantations result in many processes that may affect long-term site productivity such as soil compaction and residue manipulation. The objective of this work was to evaluate the effects of various... -
Precision forestry for pulpwood re-establishment silviculture
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Robert Neil PallettThe Southern African pulp and paper industry has a strong export focus and operates in an open global market. In a global context, wood is a commodity product and an ongoing strategy of reduction in the unit cost of timber... -
Application of a 'stem number guide curve' for sustainable harvest control in the dry woodland savanna of northern Namibia
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: F. P. Graz K. von GadowThe savanna woodlands of north-eastern Namibia are a significant source of essential resources for the rural population. Thus far, however, there is little or no growth data available to predict future timber supplies and current yield regulation is limited to... -
Modeling woody vegetation resources using Landsat TM imagery in northern Namibia
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Alex Verlinden Risto LaamanenIn 1995 a forest inventory covering northern Namibia was initiated, based on stratified systematic field sampling of plots with a radius of up to 30 m. In these plots detailed tree parameters were measured. Due to security problems the most... -
In vitro shoot multiplication and rooting from seedling explants of Pterocarpus angolensis in Zambia
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Exildah Chisha-Kasumu AdamH. Price Steve WoodwardPterocarpus angolensis is a savanna tree species growing mostly in the southern part of Africa. Exploitation for its medicinal and commercial uses has led to diminishing of wild populations. Developing reliable in vitro protocols for propagation would enable mass production... -
Silviculture and Genetics of Pinus kesiya for Planting Degraded Pasture Land
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J.A. Wright --- , USA N. Isaza --- , USAThe conifer species, Pinus kesiya Royle ex Gordon, is an important part of the ecology within the indigenous range of South-east Asia as well as in sustainably managed plantations in a number of countries. Planting with the species in Colombia... -
A Protocol for Wildlife Conservation Planning in an Afforestable Montane Grassland Region
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: A.J. Armstrong --- Department of Nature Conservation, South Africa H.J. van Hensbergen --- Department of Nature Conservation, South AfricaThe grassland biome is the biome most transformed by human activity in South Africa. At least thirteen percent of the biome is suitable for pine afforestation. There is a need for conservation evaluations before large-scale commercial afforestation to determine which... -
Fourteen Year Performance of Eucalyptus Species/Provenances, Casuarina equisetifolia, Leucaena leucocephala and Senna siamea at Michafutene, Mozambique
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: A.G. Mugasha --- Department of Forest Biology, Faculty of Forestry, Tanzania P.A. Wate --- Centro de Experimentacao Florestal (CEF), S. A.O. Chamshama --- Department of Forest Biology, Faculty of Forestry, TanzaniaVariation in performance of several Eucalyptus species/provenances/land races, Casuarina equisetifolia, Leucaena leucocephala and Senna siamea was evaluated in two 14—year old trials planted at Michafutene, Mozambique. At the age of 6, 10, and 14 years, data were collected of survival,... -
A Survey of Tree Planting Practices in the Smallholder Farming Sector of Zimbabwe
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: EnosM. Shumba --- Forest Research Centre, Zimbabwe Abisai Mushaka --- Forest Research Centre, Zimbabwe Joseph Muchichwa --- Forest Research Centre, ZimbabweGroup meetings and individual farm visits were used to establish current tree planting practices in the smallholder farming sector of Zimbabwe. The number of tree species planted in each of the eight districts studied ranged from nine to 27 with... -
Pinus patula establishment problem associated with poor ectomycorrhizal development in previously cultivated soils
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: S. Khalil --- Department of Microbiology and Plant Pathology, South Africa N. Labuschagne --- Department of Microbiology and Plant Pathology, South Africa M.J. Wingfield --- Department of Microbiology and Plant Pathology, South AfricaA field survey of Pinus patula Schlecht. et Cham. plantations at Mondi's Mooi River Estate, Kwazulu-Natal, South Africa was conducted to assess the levels of ectomycorrhizal (EM) fungal colonisation. The objective was to determine whether the establishment problem (old land... -
Certification: Situation analysis of private timber growers in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Cori Ham --- Faculty of Agricultural and Forestry Sciences,Forest certification has become an important aspect to consider in forestry. The South African forestry industry has adopted to a system of forest certification fairly easily. The private timber growers are also expected to implement certification, but can they adapt... -
Adjusting Faustmann's formula for the South African forestry environment
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Eksteen Uys --- Department of Forest Science, South AfricaThe forestry industry in South Africa is characterised by frequent changes in land ownership and the valuation of forestry land consequently forms a regular task of forestry valuers. Traditionally the value of bare forestry land was determined by calculating the... -
Evidence of AIDS mortality from an alternative source: A Swaziland case study
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Alan Whiteside --- Health Economics and HIV/AIDS Research Division, South Africa Chris Desmond --- Health Economics and HIV/AIDS Research Division, South Africa John King --- , Swaziland Jane Tomlinson --- , Swaziland Conway Sithungo --- , SwazilandThis paper explores a way of measuring AIDS mortality in the absence of vital registration. It looks at the death notices in the major daily newspaper in Swaziland, The Times of Swaziland, and asks if these can be analysed to... -
An analysis of plant species distributions on the floodplain of the Okavango River, Namibia, with respect to impacts of possible water abstraction
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NJ Diederichs WN ElleryThe proposed abstraction of water from the Okavango River in Namibia could potentially result in significant changes in the vegetation of floodplains downstream of the abstraction point. Direct gradient analysis was used to determine the distribution of the most common... -
Beacons in the limnological landscape
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BR AllansonAn overview is given of a number of major developments in the limnology of South Africa, Zimbabwe and Namibia. None was possible without the involvement of enthusiastic investigators who, over some 70 years, stimulated the growth of freshwater research in... -
Land use and cover changes in the Likangala catchment of the Lake Chilwa basin, Malawi: implications for managing a tropical wetland
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DM Jamu JB Chimphamba RE BrummettThis study analyses land use and cover changes in the Likangala River catchment of Lake Chilwa, Malawi, an endorheic tropical African lake. It also examines how land use-related physico-chemical and hydrological parameters in two affluent rivers of the lake affect... -
Hydraulic loading, stability and water quality of Nakivubo wetland, Uganda
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Kyambadde F Kansiime L Gumaelius G DalhammarNakivubo wetland, which has performed tertiary water treatment for Kampala city for the past 40 years, is ecologically stressed by agricultural and infrastructural developments. Field studies were carried out to assess the hydraulic loading, pollution profile, stability and water quality... -
Towards the development of a macroinvertebrate sampling technique for palustrine wetlands in South Africa: a pilot investigation in the KwaZuluNatal midlands
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rebecca Bowd DonovanC Kotze CraigD Morris NevilW QuinnA study was undertaken in November 2003 to derive a suitable sampling technique for collecting a representative sample of aquatic macroinvertebrates from a selected emergent vegetation biotope in a palustrine wetland, Melmoth Vlei, KwaZulu-Natal, South Africa. The aim was to... -
The impact of land use on water quality of the Lwiro River, Democratic Republic of Congo, Central Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M BagalwaThe water quality of the Lwiro River, Democratic Republic of Congo (DRC), Central Africa, was investigated on a monthly basis from December 1999–October 2000, at six stations along a hydraulic gradient from source to mouth, to evaluate the impact of... -
Testing the applicability of the SASS5 scoring procedure for assessing wetland health: a case study in the KwaZulu-Natal midlands, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rebecca Bowd DonovanC Kotze CraigD Morris NevilW QuinnA study was undertaken between 29th January and 17th February 2004 to test the applicability of the South African Scoring System Version 5 (SASS5) scoring and calculation procedure in nutrient-enriched palustrine wetlands in the midlands of KwaZulu-Natal, South Africa. Four... -
The response of Cyperus papyrus (L.) and Miscanthidium violaceum (K. Schum.) Robyns to eutrophication in natural wetlands of Lake Victoria, Uganda
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Kipkemboi --- Department of Zoology, Kenya F Kansiime --- , Uganda P Denny --- , The NetherlandsInterrelationships between nutrient concentrations and aerial biomass, root numbers, length and rhizomes size in Cyperus papyrus (L.) (papyrus) and Miscanthidium violaceum (K. Schum.) Robyns (synonymous to Miscanthus violaceus (K. Schum) Pilg.) were established in five different wetlands around the northern... -
The distribution and relative abundance of stream fishes in the upper Manyame River, Zimbabwe, in relation to land use, pollution and exotic predators
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Gratwicke --- Department of Biological Sciences, Zimbabwe BE Marshall --- Department of Biological Sciences, Zimbabwe T Nhiwatiwa --- Department of Biological Sciences, ZimbabweA survey of the upper Manyame River catchment, middle Zambezi system, Zimbabwe, yielded a total of 22 fish species from 48 stations. The most widespread species (present at >20 stations) were Marcusenius macrolepidotus, Barbus paludinosus, Labeo cylindricus, Clarias gariepinus and... -
River and wetland classifications for freshwater conservation planning in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NA Rivers-Moore --- Ezemvelo KZN Wildlife, South Africa PS Goodman --- Ezemvelo KZN Wildlife, South AfricaTo provide the foundation for a freshwater conservation plan for KwaZulu-Natal, three-level hierarchical river and wetland type classifications, based on spatio-temporal scaling relationships, are proposed. This resolution of classification is appropriate for regional- or provincial-scale conservation planning. The hierarchical structure... -
Human impacts on hydrological health and the provision of ecosystemservices: a case study of the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Sinchembe --- Department of Environmental Science, South Africa WN Ellery --- Department of Environmental Science, South AfricaWetland hydrological health and the provision of indirect ecosystem services in the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa, were assessed in 2008, using the newly developed wetland assessment tools WET-Health and WET-EcoServices. Variation in health and ecosystem services were assessed... -
The effect of physico-chemical parameters on speciation of trace metals insediments from inland and coastal waters of Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CA Biney --- , Burkina Faso R Asmah --- , GhanaThe speciation of cadmium, lead, copper, zinc, manganese and iron into exchangeable, carbonate, reducible and organic bound fractions was studied in sediments from coastal and freshwater environments in Ghana. This was relevant as the species in which metals are stored... -
The influence of biotope and sampling method on the assessment of the invertebrate community structure in endorheic reed pans in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR de Klerk --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South AfricaReed pans in the Mpumalanga Lakes District, South Africa, support an abundant diversity and richness of aquatic macroinvertebrates in a variety of different biotopes which, in the case of depressional wetlands such as reed pans, are not well studied. This... -
A vegetation-based hierarchical classification for seasonally pulsed floodplains in the Okavango Delta, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Murray-Hudson --- , Botswana F Combs --- , Botswana P Wolski --- , Botswana MT Brown --- , USAA classification scheme is presented for seasonal floodplains of the Boro-Xudum distributary of the Okavango Delta, Botswana. This distributary is subject to an annual flood-pulse, the inundated area varying from a mean low of 3 600 km2 to a mean... -
Assessment of heavy metal accumulation in Anzali wetland, Iran, using a submerged aquatic plant, Ceratophyllum demersum
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR Pourkhabbaz --- Department of Environmental Sciences, Faculty of Agriculture, Iran HR Pourkhabbaz --- Department of Environment, Faculty of Natural Resources, Iran T Khazaei --- Department of Environmental Sciences, Faculty of Agriculture, Iran S Behravesh --- Department of Environmental Sciences, Faculty of Agriculture, Iran M Ebrahimpour --- Department of Environmental Sciences, Faculty of Agriculture, IranThe objective of this study in 2009 was to examine whether levels of cadmium (Cd), copper (Cu), zinc (Zn), lead (Pb) and chromium (Cr) were higher in the leaves than in the stems of a submerged aquatic plant Ceratophyllum demersum... -
Spatial and temporal variations in densities of small fishes across different temporary floodplain types of the lower Okavango Delta, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Siziba --- , Botswana MJ Chimbari --- , Botswana K Mosepele --- , Botswana H Masundire --- Department of Biological Sciences, BotswanaSmall-sized and juvenile fishes as well as physicochemical water parameters in various primary, secondary and rarely flooded temporary floodplains of the Okavango Delta were assessed during the different hydrological phases of the 2009–2010 flooding season. Small fishes were sampled in... -
Heavy metal concentrations in the water of the Nyl River system, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Greenfield --- Department of Zoology, South Africa JHJ van Vuren --- Department of Zoology, South Africa V Wepener --- Department of Zoology, South AfricaThe Nyl River floodplain, a Ramsar site that provides habitat for a number of endangered species, is one of the jewels in the arid Limpopo province and thus its conservation and protection are vitally important. Very little work has been... -
Impact of marine influence and cultivation on the diatom flora of Thiaroye Pond, Dakar, Senegal
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EH Sow --- Department of Geology, Senegal CAK Fofana --- Department of Geology, Senegal C Aw --- Department of Geology, Senegal PM Ndiaye --- Department of Geology, SenegalDuring a limnological and palaeolimnological study of the western part of the Great Coast of Senegal, an analysis of diatoms was carried out in Thiaroye Pond in the suburbs of Dakar. Current diatom flora in the water and on floating... -
Controls on the formation of Wakkerstroom Vlei, Mpumalanga province, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Joubert --- Department of Environmental Science, South Africa WN Ellery --- Department of Environmental Science, South AfricaThe present study investigated controls on the formation of Wakkerstroom Vlei, an ∼1 000 ha unchannelled valley-bottom wetland on the South African Highveld. Along the uppermost and lowermost reaches of the wetland, where dolerite outcrops occur along the main valley,... -
Variations and changes in habitat, productivity, composition of aquatic biota and fisheries of the Kyoga lake system: lessons for management
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Ogutu-Ohwayo --- National Fisheries Resources Research Institute, Uganda K Odongkara --- National Fisheries Resources Research Institute, Uganda W Okello --- National Fisheries Resources Research Institute, Uganda D Mbabazi --- National Fisheries Resources Research Institute, Uganda SB Wandera --- National Fisheries Resources Research Institute, Uganda LM Ndawula --- National Fisheries Resources Research Institute, Uganda V Natugonza --- National Fisheries Resources Research Institute, UgandaThe Kyoga lake system, which is c. 4 m deep, originally had a diverse fish fauna, extensive macrophytes and wetlands. Most (82%) of its water comes from Lake Victoria, is controlled through three dams and has a short residence time... -
The effects of fire on wetland structure and functioning
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DC Kotze --- School of Agriculture, Earth and Environmental Sciences, South AfricaFire is an extensively used wetland management tool in both tropical and temperate areas, but its effects on wetlands are not well understood. The purpose of this paper is to review the effects of fire on wetland hydrology, biogeochemical cycling... -
Effects of crop diversity on bird species richness and abundance in a highland East African agricultural landscape
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: P Kariuki Ndang'ang'a --- , Kenya JohnBM Njoroge --- , Kenya Kamau Ngamau --- , Kenya Wariara Kariuki --- , Kenya PhilipW Atkinson --- British Trust for Ornithology, UK Juliet Vickery --- The Royal Society for the Protection of Birds, UKWe examined the effects of crop diversity on avian species richness and abundance in the highland farmlands of Nyandarua, Kenya. We surveyed birds using point counts and recorded habitat data at the same locations estimating cover and growth stage of... -
Longevity of the Seychelles Fody Foudia sechellarum
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: H Dieter Oschadleus --- Animal Demography Unit, Department of Zoology, South Africa Riaz Aumeeruddy --- Nature Seychelles, Seychelles SjoukeA Kingma --- School of Biological Sciences, UKThe Seychelles Fody Foudia sechellarum, which occurs on six islands in the Seychelles, has been well ringed over several decades in order to obtain population estimates for the species, and morphological descriptions and measurements. Annual survival estimates for the species... -
Territory size and habitat selection of Cinnamon-breasted Rock Bunting Emberiza tahapisi in Nigeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: FidelisA Atuo --- AP Leventis Ornithological Research Institute, Nigeria ShiiwuaA Manu --- AP Leventis Ornithological Research Institute, NigeriaMost of our understanding of territorial behaviour in birds comes from studies of temperate species. Territoriality and factors influencing territory size of tropical birds are still poorly studied. In this study, 11 territories of the Cinnamon-breasted Rock Bunting Emberiza tahapisi... -
Status and breeding ecology of the Common Moorhen Gallinula chloropus in Algeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Farrah Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria AhmedH Alfarhan --- Center of Excellence for Research in Biodiversity, Saudi Arabia Boudjéma Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, AlgeriaThe status of the Common Moorhen Gallinula chloropus in Algeria and its breeding ecology in North Africa are reported for the first time. Nest site selection and breeding parameters were studied at two contrasting sites in north-east Algeria: Boussedra, an... -
Vegetation composition and structure influences bird species community assemblages in the highland agricultural landscape of Nyandarua, Kenya
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: P Kariuki Ndang'ang'a --- BirdLife International – Africa Partnership Secretariat, Kenya John BM Njoroge --- Jomo Kenyatta University of Agriculture and Technology, Kenya Mwangi Githiru --- Ornithology Section, KenyaWe examined the effects of vegetation composition and structure on bird species diversity and richness of foraging guilds in the highland agricultural landscape of Nyandarua, Kenya. Bird point counts and vegetation surveys were undertaken during four sampling periods. Linear mixed... -
Treatment Effects on Annual and Dry Period Streamflow at Cathedral Peak
Item type: Journal Article • Journal: South African Forestry Journal • Authors: J.M. Bosch --- Department of Forestry,Total annual streamflow and dry season flows of treated catchments at Cathedral Peak, Natal, were compared and related to those of index catchments. -
Overland Flow on Small Plots at the Jonkershoek Forestry Research Station
Item type: Journal Article • Journal: South African Forestry Journal • Authors: D.B. Versfeld --- Department of Environment Affairs,Overland flow was found to be negligible on small plots at Jonkershoek in the Western Cape. Treatments such as the burning or hoeing of fynbos and the thinning of a plantation had no significant effect on this phenomenon and the... -
Early Respacement and Fewer Thinnings can Increase Profitability of Coniferous Sawtimber Production
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre, J. S.J. Venter --- , H. Haigh --- Natal Forestry Research Centre,A pine sawtimber production regime using wider initial spacing, early respacement, fewer thinning operations and a shortened rotation is proposed. The proposal is compared with a commonly accepted regime for ranges of interest rates and pulpwood prices. Benefits are lowered... -
7. Problems in Using Vegetation or Soil Classification in Determining Site Quality
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- , South AfricaThis paper discusses the concepts of site and site quality and reviews briefly the determination of the latter. Site quality is viewed primarily as productive capacity of forest land, although other aspects are considered also. It is concluded that nowadays... -
Factors Affecting the Timing of Grassland Regrowth after Fire in the Montane Grasslands of Natal
Item type: Journal Article • Journal: South African Forestry Journal • Authors: C.S. Everson --- , South Africa TheresaM. Everson --- , South AfricaRecent research has indicated that burning Highland Sourveld once growth has been initiated increases grass tiller mortality. Present burning prescriptions could therefore be improved by an insight into the factors controlling the initiation of grass growth in spring. It was... -
Curing Rates in the Grass Sward of the Highland Sourveld in the Natal Drakensberg
Item type: Journal Article • Journal: South African Forestry Journal • Authors: TheresaM. Everson --- , C.S. Everson --- , H.M. Dicks --- , A.G. Poulter --- ,Data on the curing rates of one, two and three-year-old grassland are presented. Curing is initiated at the end of April and progresses rapidly up to the middle of May. By June the grasses are 95 % cured, increasing the... -
Detection of land cover changes around Lake Mutirikwi, Zimbabwe, based on traditional remote sensing image classification techniques
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Dube --- Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, South Africa W Gumindoga --- Department of Civil Engineering, Zimbabwe M Chawira --- Zimbabwe Environmental Law Association, ZimbabweLand cover changes around Lake Mutirikwi in 1984–2011 were mapped from Landsat images using traditional image classification methods including the maximum likelihood classifier algorithm. The possibility of mapping the coverage and abundance of surface floating aquatic weeds was also tested... -
A SYSTEM DYNAMICS MODEL OF PART OF THE PONGOLO RIVER FLOODPLAIN: DEVELOPMENT AND WATER MANAGEMENT POLICY ANALYSIS
Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: A.K. Drewes --- ,The issue of allowing the timing, duration and magnitude of a flood release to be determined by man has led to a wide spectrum of viewpoints as to which values of these parameters are most suitable for the Pongolo River... -
Population Dynamics and Spawning of the Flatfish Solea Bleekeri and Pseudorhombus Arsius in the Intertidal Area of Inhaca Island, Moçambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A. M. P. Van Schie W. F. De BoerThe population dynamics of flatfish Solea bleekeri and Pseudorhombus arsius within the intertidal area of Inhaca Island, Moçambique, was investigated using bottom trawl data collected during summer (December 1996 – March 1997) and winter (June 1997 – August 1997). The... -
Aquarium Experiments Comparing the Feeding Behaviour of Rock Lobster Jasus Lalandii on Abalone and Sea Urchins at Two Sites on the West Coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. F. Van Zyl S. Mayfield G. M. BranchPredation by the rock lobster Jasus lalandii is influential in regulating the composition of shallow-reef communities on the west coast of South Africa. Two previous and independent studies addressing this topic, but conducted 600 km apart (one in Cape Town... -
First Breeding Records of Kelp Gulls Larus Dominicanus Vetula at Robben Island, Western Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K. M. Calf J. Cooper L. G. UnderhillThe first recorded breeding of kelp gulls Larus dominicanus vetula on Robben Island, Western Cape, South Africa, took place in 2000, when five nests were recorded. In 2001, there were 15 nests and 29 fledglings. The initiation of breeding by... -
Conserving Surface-nesting Seabirds at the Prince Edward Islands: The Roles of Research, Monitoring and Legislation
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. J. M. Crawford J. CooperSouth Africa's subantarctic Prince Edward Islands support substantial proportions of the global populations of a number of surface-nesting seabirds. Populations of most of these have decreased at the islands since the 1980s and 12 of 16 species are regarded as... -
Populations of Surface-nesting Seabirds at Marion Island, 1994/95–2002/03
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. J. M. Crawford J. Cooper B. M. Dyer M. D. Greyling N. T. W. Klages P. G. Ryan S. L. Petersen L. G. Underhill L. Upfold W. Wilkinson M. S. De Villiers S. Du Plessis M. Du Toit T. M. Leshoro A. B. Makhado M. S. Mason D. Merkle D. Tshingana V. L. Ward P. A. WhittingtonDuring the 1990s and early 2000s, populations of surface-nesting seabirds at Marion Island showed different trends, but for the majority of species numbers decreased. Reduced numbers of gentoo penguins Pygoscelis papua, eastern rockhopper penguins Eudyptes chrysocome filholi, Crozet shags Phalacrocorax... -
Counts of Surface-nesting Seabirds Breeding at Prince Edward Island, Summer 2001/02
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P. G. Ryan J. Cooper B. M. Dyer L. G. Underhill R. J. M. Crawford M. N. BesterThe first midsummer survey of surface-nesting seabirds at Prince Edward Island was conducted during December 2001. It was also the first census for most species since the early 1980s. Despite concerns about the impacts of longline fishing mortality on various... -
Unusual Breeding by Seabirds at Marion Island During 1997/98
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. J. M. Crawford C. M. Duncombe Rae D. C. Nel J. CooperIn 1997/98, breeding at subantarctic Marion Island was exceptionally good for five species of seabirds capable of foraging over wide areas and for a tern. The number of king penguin Aptenodytes patagonicus chicks surviving to the start of spring in... -
Population and Breeding of the Gentoo Penguin Pygoscelis Papua at Marion Island, 1994/95 – 2002/03
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. J. M. Crawford J. Cooper M. Du Toit M. D. Greyling B. Hanise C. L. Holness D. G. Keith J. L. Nel S. L. Petersen K. Spencer D. Tshingana A. C. WolfaardtThe numbers of gentoo penguins Pygoscelis papua breeding at subantarctic Marion Island fell by 40% from 1994/95 to 2002/03, from 1 352 pairs to 806 pairs. Apart from a slight increase in 1998/99, there was a steady decrease in numbers... -
Population of the Macaroni Penguin Eudyptes Chrysolophus at Marion Island, 1994/95–2002/03, with Information on Breeding and Diet
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. J. M. Crawford J. Cooper B. M. DyerThere is indication that numbers of macaroni penguins Eudyptes chrysolophus at subantarctic Marion Island have decreased since the early 1980s. Estimates of the population at the island fell from about 405 000 pairs in 1983/84 and 434 000 pairs in... -
Decrease in Numbers of the Eastern Rockhopper Penguin Eudyptes Chrysocome Filholi at Marion Island, 1994/95–2002/03
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. J. M. Crawford J. Cooper B. M. Dyer M. D. Greyling N. T. W. Klages D. C. Nel J. L. Nel S. L. Petersen A. C. WolfaardtThe number of eastern rockhopper penguins Eudyptes chrysocome filholi breeding at subantarctic Marion Island decreased from about 173 000 pairs in 1994/95 to about 67 000 pairs in 2001/02. During 1994/95 – 2002/03 pairs fledged on average 0.40 chicks per... -
Absence of Haematozoa in Breeding Macaroni Eudyptes Chrysolophus and Rockhopper E. Chrysocome Penguins at Marion Island
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A. Schultz S. L. PetersenHaematozoan infections cause the death of penguins in captivity, but seldom in the wild. No haematozoa were found in 89 blood smears taken from macaroni penguins Eudyptes chrysolophus or 80 smears from eastern rockhopper penguins E. chrysocome filholi at subantarctic... -
Population Dynamics of the Wandering Albatross Diomedea Exulans at Marion Island: Longline Fishing and Environmental Influences
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D. C. Nel F. Taylor P. G. Ryan J. CooperThe subantarctic Prince Edward Islands (Marion and Prince Edward) support the largest breeding population of the Vulnerable wandering albatross Diomedea exulans. The number of birds breeding at Marion Island has fluctuated over the past three decades apparently as a result... -
Exchange of the Wandering Albatross Diomedea Exulans Between the Prince Edward and Crozet Islands: Implications for Conservation
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J. Cooper H. WeimerskirchExchange of 61 wandering albatrosses Diomedea exulans has been recorded between the French Crozet Islands and the South African Prince Edward Islands, 1 068 km apart in the Southern Ocean. Most movements of banded birds (57) have been westwards, from... -
The Oldest Known Banded Wandering Albatross Diomedea Exulans at the Prince Edward Islands
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J. Cooper H. Battam C. Loves P. J. Milburn L. E. SmithThe oldest known wandering albatross Diomedea exulans at the Prince Edward Islands is estimated to have been approximately half a century old when last recaptured in 2001. Demographic studies need to continue for several more decades before the true maximum... -
Nest Densities of the Wandering Albatross Diomedea Exulans at the Prince Edward Islands, Estimated Using Gps
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L. G. Underhill S. L. Petersen J. CooperHand-held Global Positioning System (GPS) receivers provide opportunities for detailed and rapid mapping of features, including biological ones, further enhanced by the removal during 2000 of "selective availability". GPS was used to map, describe and compare nest densities within wandering... -
Population, Breeding, Diet and Conservation of the Crozet Shag Phalacrocorax [atriceps] Melanogenis at Marion Island, 1994/95–2002/03
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. J. M. Crawford J. Cooper B. M. Dyer A. C. Wolfaardt D. Tshingana K. Spencer S. L. Petersen J. L. Nel D. G. Keith C. L. Holness B. Hanise M. D. Greyling M. Du ToitThe number of Crozet shags or cormorants Phalacrocorax [atriceps] melanogenis breeding at subantarctic Marion Island decreased by 68% from 841 pairs in 1994/95 to 272 pairs in 2002/03. The mean number of pairs at colonies also decreased and was significantly... -
Population Numbers of Fur Seals at Prince Edward Island, Southern Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M. N. Bester P. G. Ryan B. M. DyerDuring the period 17–22 December 2001, the onshore distribution and the abundance of Antarctic fur seals Arctocephalus gazella and Subantarctic fur seals A. tropicalis were determined for Prince Edward Island. Two breeding colonies of Antarctic fur seals were located on... -
The Distribution and Spread of Alien Vascular Plants on Prince Edward Island
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P. G. Ryan V. R. Smith N. J. M. GremmenSurveys of alien plants at subantarctic Prince Edward Island in 2001 show that the ranges of all three introduced species have increased since the last survey in 1998. Poa annua, the longest-established species, increased its range substantially after 1987, prior... -
Historical commercial West Coast rock lobster Jasus lalandii landings in South African waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Melville-Smith L van SittertHistoric data from 1891 to 2001 on the annual exports of rock lobster Jasus lalandii products (canned, frozen tails, raw whole frozen, cooked whole frozen and live) from the South African west coast are used to estimate the annual commercial... -
The West Coast rock lobster Jasus lalandii as a valuable source for chitin and astaxanthin
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Auerswald G GädeEstimates are made of the maximal amount of chitin and astaxanthin that can potentially be retrieved from material of the South African West Coast rock lobster Jasus lalandii. Three different sources were investigated: (a) industrial waste from lobster processing factories,... -
A symbiotic shell-encrusting bryozoan provides subtidal whelks with chemical defence against rock lobsters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CA Gray CD McQuaid MT Davies-ColemanThe subtidal whelk Burnupena papyracea co-occurs with a voracious predator, the rock lobster Jasus lalandii, in situations where other potential prey are largely eliminated. The survival of B. papyracea has been ascribed to a symbiotic bryozoan, Alcyonidium nodosum, which characteristically... -
The status of seabirds at Latham Island, Tanzania
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RJM Crawford BS Asseid BM Dyer A Hija AA Mwinyi P Shinula L UpfoldLatham Island, Tanzania, was surveyed in August 2004 — the first known survey of the island outside the period October–March — and in December 2005. On both surveys, four species of seabird were breeding at the island. Larger numbers of... -
The food of three seabirds at Latham Island, Tanzania, with observations on foraging by masked boobies Sula dactylatra
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BS Asseid L Drapeau RJM Crawford BM Dyer A Hija AA Mwinyi P Shinula L UpfoldAt Latham Island, Tanzania, in August 2004 and December 2005, flying fish (Exocoetidae) contributed 90% by mass of prey items regurgitated by masked boobies Sula dactylatra. The fish had a mean caudal length of 164mm. Two boobies generally foraged in... -
Inter- and intra-specific variability in morphogenetics and toxin composition of Alexandrium spp. in Irish coastal waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Touzet JM Franco R RaineAlexandrium spp. usually occur in low densities during summer along the south and west coasts of Ireland. Field investigations revealed the presence of morphologically similar strains of A. tamarense, A. tamutum and A. minutum. Several strains were cultured, derived through... -
Brevetoxin — an elusive toxin in New Zealand waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P McNabb L Rhodes J Adamson P HollandLiquid chromatography mass spectrometry (LCMS) was used to test 34 microalgal isolates, all known or reported to be brevetoxin producers. Only Karenia brevis strains, imported from the USA, produced brevetoxin. In contrast, all isolates cultured in New Zealand proved non-toxic... -
Towards the declaration of a large marine protected area: a subtidal ichthyofaunal survey of the Pondoland coast in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann L Celliers ST Fennessy S Bailey AD WoodA subtidal marine ichthyofaunal survey was carried out on shallow reefs (1–30m deep) in the Pondoland region between the Mtamvuna River and Port St Johns in the Eastern Cape, South Africa. The purpose of this survey was to provide the... -
Impact of predation by Cape fur seals Arctocephalus pusillus pusillus on Cape gannets Morus capensis at Malgas Island, Western Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AB Makhado RJM Crawford LG UnderhillCape fur seals Arctocephalus pusillus pusillus were estimated to kill some 6 000 Cape gannet Morus capensis fledglings around Malgas Island in the 2000/01 breeding season, 11 000 in 2003/04 and 10 000 in 2005/06. This amounted to about 29%,... -
Birds and conservation significance of the Namib Desert's least known coastal wetlands: Baia and Ilha dos Tigres, Angola
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RE Simmons A Sakko J Paterson A NzuziThe Ilha dos Tigres of Angola is the only sandy island off the coast of the 2 000km-long Namib Desert and it remains the least known coastal wetland on a desert coast rich in shorebirds. Two surveys of the Baia... -
Socio-economic aspects of boat-based ecotourism during the sardine run within the Pondoland Marine Protected Area, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Dicken --- Department of Development Studies, School of Economics, Development and Tourism, South AfricaUnderstanding recreational aspects of the tourism industry developing around the KwaZulu-Natal sardine run is important for the protection and sustainability of the Pondoland Marine Protected Area (MPA), on the south-east coast of South Africa. Between June and July 2007, a... -
Settlement patterns, size and growth of puerulus and juvenile rock lobster Jasus lalandii at an oyster farm in Saldanha Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Groeneveld --- , South Africa CL Greengrass --- Marine Biology Research Institute, Department of Zoology, South Africa DL van Zyl --- Branch Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa GM Branch --- Marine Biology Research Institute, Department of Zoology, South AfricaTrends in the abundance, size and growth of newly settled pueruli and early juveniles of the rock lobster Jasus lalandii were determined from samples obtained from mesh bags used for oyster mariculture in Saldanha Bay, South Africa. Totals of 3... -
Surviving off junk: low-energy prey dominates the diet of African penguins Spheniscus demersus at Mercury Island, Namibia, between 1996 and 2009
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Ludynia --- Animal Demography Unit, Department of Zoology, South Africa J-P Roux --- Animal Demography Unit, Department of Zoology, South Africa R Jones --- Ministry of Fisheries and Marine Resources, Namibia J Kemper --- Ministry of Fisheries and Marine Resources, Namibia LG Underhill --- Animal Demography Unit, Department of Zoology, South AfricaThe diet of African penguins Spheniscus demersus in Namibia consisted mainly of sardine Sardinops sagax in the 1950s. Since the collapse of pelagic fish stocks in the 1970s, birds fed mainly on bearded (pelagic) goby Sufflogobius bibarbatus, a low-energy prey... -
A robust method for generating separate catch time-series for each of the hake species caught in the Namibian trawl fishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Johnsen --- , Norway J Kathena --- Ministry of Fisheries and Marine Resources, NamibiaMerluccius capensis and M. paradoxus are morphologically very similar and cannot be registered separately by species in the Namibian commercial hake catches. This prevents a biologically plausible single-species stock assessment from being carried out. Here, species-separated data from an observer... -
Assessing the ecosystem effects of the abalone Haliotis midae from its diet and foraging behaviour
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: Z Zeeman --- Department of Zoology and Marine Research Institute, South Africa GM Branch --- Department of Zoology and Marine Research Institute, South Africa TP Peschak --- Department of Zoology and Marine Research Institute, South Africa D Pillay --- Department of Zoology and Marine Research Institute, South AfricaThe South African abalone Haliotis midae is commercially exploited and seriously threatened by overfishing. This not only affects the species itself but potentially the functioning of the ecosystem because of associated changes in community structure. The nature of effects that... -
Sea level changes at Ascension Island in the last half century
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PL Woodworth --- National Oceanography Centre, UK PR Foden --- National Oceanography Centre, UK DS Jones --- National Oceanography Centre, UK J Pugh --- National Oceanography Centre, UK SJ Holgate --- National Oceanography Centre, UK A Hibbert --- National Oceanography Centre, UK DL Blackman --- National Oceanography Centre, UK CR Bellingham --- National Oceanography Centre, UK VM Roussenov --- School of Environmental Sciences, UK RG Williams --- School of Environmental Sciences, UKAn exercise in ‘data archaeology’ at Ascension Island has provided an estimate of sea level change between 1955 and 2001.5 (the mid-point of a recent dataset spanning 1993–2009). That average trend of 0.93 mm y−1 (SE 0.69) compares to a... -
Abyssal scavenging demersal fauna at two areas of contrasting productivity on the Subantarctic Crozet Plateau, southern Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NJ Cousins --- Oceanlab, UK T Horton --- National Oceanography Centre, Southampton, UK BD Wigham --- Dove Marine Laboratory, School of Marine Science and Technology, UK PM Bagley --- Oceanlab, UKThe Crozet Plateau is situated below typical high-nutrient, low-chlorophyll (HNLC) waters of the southern Indian Ocean. The area to the east of the Crozet Islands experiences high levels of surface productivity during the austral summer due to natural iron enrichment... -
Feeding habits and food partitioning between three commercial fish associated with artificial reefs in a tropical coastal environment
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Mablouké --- Université de la Réunion, Laboratoire ECOMAR FRE 3560 (CNRS/INEE/UR), France J Kolasinski --- IsoEnvironmental cc, Botany Department, South Africa M Potier --- IRD, UMR 212 EME (IRD/IFREMER/UM2), France A Cuvillier --- Université de la Réunion, Laboratoire ECOMAR FRE 3560 (CNRS/INEE/UR), France G Potin --- Université de la Réunion, Laboratoire ECOMAR FRE 3560 (CNRS/INEE/UR), France L Bigot --- Université de la Réunion, Laboratoire ECOMAR FRE 3560 (CNRS/INEE/UR), France P Frouin --- Université de la Réunion, Laboratoire ECOMAR FRE 3560 (CNRS/INEE/UR), France S Jaquemet --- Université de la Réunion, Laboratoire ECOMAR FRE 3560 (CNRS/INEE/UR), FranceAt Réunion Island (south-western Indian Ocean), artificial reefs were submerged in 2003 in a bay and were soon colonised by fish, among which were the highly abundant commercial species Lutjanus kasmira, Priacanthus hamrur and Selar crumenophthalmus. The high concentration and... -
Reduced seabird night strikes and mortality in the Tristan rock lobster fishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JP Glass --- Tristan Fisheries Department, Central South Atlantic Ocean PG Ryan --- Percy FitzPatrick Institute, DST/NRF Centre of Excellence, South AfricaThe main impact of the fishery for Tristan rock lobster Jasus tristani on seabirds at the Tristan archipelago and Gough Island is through night strikes, when petrels collide with a ship after being disorientated by its lights. Tristan fishery observers... -
Socio-economic aspects of the Sodwana Bay SCUBA diving industry, with a specific focus on sharks
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Dicken --- KwaZulu-Natal Sharks Board, South AfricaUnderstanding socio-economic aspects of the diving industry at Sodwana Bay, including data on participant motivation and expenditure, is crucial for the effective management of the St Lucia and Maputaland marine protected areas, South Africa. Between July 2011 and July 2012... -
Alternative eucalypt species for Zululand: Seven year results of site: species interaction trials in the region
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R A W Gardner --- , South AfricaThe ICFR initiated a search for alternative eucalypt species for the Zululand Coastal Plain region during 1992 by establishing a series ofsite: species interaction trials in the area. Sixteen pure species (seedlings), one E. grandis intra-specific clone and five inter-specific... -
Prospects of eucalypt species, including interspecific hybrids from South Africa, for hardwood plantations in marginal subtropical environments in Queensland, Australia
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: D J Lee --- , D G Nikles --- , G R Dickinson --- ,In Australia, there has been rapid expansion in recent years of commercial plantations of hardwood timber species, especially of Eucalyptus and Corymbia. In tropical and sub-tropical Queensland the land most likely to be readily available for this planting is in... -
Early performance of Casuarina junghuhniana provenances/land races at Lushoto, Tanzania
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: S.T. Mwihomeket --- , Tanzania A.G. Mugasha --- Department of Forest Biology, Faculty of Forestry and Nature Conservation, Tanzania S.A.O. Chamshama --- Department of Forest Biology, Faculty of Forestry and Nature Conservation, Tanzania M.A. Mgangamundo --- Department of Forest Biology, Faculty of Forestry and Nature Conservation, Tanzania O.C. Kumburu --- Department of Forest Biology, Faculty of Forestry and Nature Conservation, Tanzania Z. Lupala --- Department of Forest Biology, Faculty of Forestry and Nature Conservation, TanzaniaA trial involving 21 provenances form Indonesia and 7 “local” seed sources of Casuarina junghuhniana was established at Lushoto, Tanzania in March 1997. At 22 and 48 months of age, the following characteristics were assessed: survival, root collar diameter (RCD... -
Evaluation of 19 provenances of Calliandra calothyrsus at Gairo and SUA Farm, Morogoro,Tanzania
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: M. Herbert --- Department of Forest Biology, Faculty of Forestry & Nature Conservation, Tanzania A. G. Mugasha --- Department of Forest Biology, Faculty of Forestry & Nature Conservation, Tanzania S.A.O. Chamshama --- Department of Forest Biology, Faculty of Forestry & Nature Conservation, TanzaniaPerformance evaluation was conducted among nineteen provenances of Calliandra calothyrsus from mesa-America, Indonesia and Tanzania. Two trials were established in February and March, 1996 at Gairo (8 provenances) and Sokoine University of Agriculture (SUA) Farm (17 provenances) in Morogoro, Tanzania... -
Determination of land and tree values of hybrid poplar plantations: A case study for Turkey
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Sait Engindeniz --- The University of Ege, Faculty of Agriculture, Turkey Aysen Olgun --- The University of Ege, Faculty of Agriculture, TurkeyValuation of poplar plantations is important in condemnation, taxation, loan, insurance, inheritance, and purchase-sale cases. In general, for the appraisal ofland value of poplar plantations, sales comparison and income capitalization approaches can be used. In appraisal of tree values sales... -
Does soil compaction on harvesting extraction roads affect long-term productivity of Eucalyptus plantations in Zululand, South Africa?
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Colin W. Smith --- ,The effect ofsoil compaction on the growth of Eucalyptusgrandis and two clonal hybrids (Eucalyptus grandis x urophylla (E. gxu) and Eucalyptus grandis x camaldulensis (E. gxc)) was evaluated on harvesting extraction roads at three sites in the Zululand region ofKwaZulu-Natal... -
Stand biomass and volume estimation for Miombo woodlands at Kitulangalo, Morogoro, Tanzania
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: S.A.O. Chamshama --- Faculty of Forestry and Nature Conservation, Tanzania A.G. Mugasha --- Faculty of Forestry and Nature Conservation, Tanzania E. Zahabu --- Faculty of Forestry and Nature Conservation, TanzaniaTree volume and biomass equations developed for Kitulangalo area in Morogoro, Tanzania ignored small branches and small trees. Consequently, this study was carried out to develop new individual tree volume and biomass equations, and assess current regeneration status, biodiversity and... -
Spatial changes in forest cover on the KwaNibela Peninsula, St Lucia, South Africa, during the period 1937 to 2008
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: BM Corrigan --- Department of Botany and Plant Biotechnology, South Africa M Kneen --- Department of Geography, Environmental Management and Energy Studies, South Africa CJ Geldenhuys --- Department of Forest and Wood Science, South Africa B-E van Wyk --- Department of Botany and Plant Biotechnology, South AfricaThe KwaNibela Peninsula is situated in the northernmost region of Lake St Lucia in KwaZulu-Natal. It is covered by forest patches of either Sand Forest or Coastal Forest within the Maputaland Coastal Vegetation. The area and the forests are heavily... -
A financial evaluation of two contrasting silvicultural systems applicable to Pinus taeda grown in north-east Uruguay
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: A Bussoni --- Departamento de Ciencias Sociales, Facultad de Agronomía, Uruguay J Cabris --- Departamento de Producción Forestal y Tecnología de la Madera, Facultad de Agronomía, UruguayThe Loblolly pine (Pinus taeda L.) plantation area in north-east Uruguay was 108 000 ha in 2008. Recent industrial capacity developments have resulted in major structural changes. Silvicultural system selection depends on site productivity, costs, timber prices and public policies... -
Growth and yield models for Eucalyptus grandis grown in Swaziland
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: M du Plessis --- , South Africa H Kotze --- , South AfricaThe aim of this study was to develop a stand-level growth and yield model for short-rotation Eucalyptus grandis grown for pulp wood production at Piggs Peak in Swaziland. The data were derived from a Nelder 1a spacing trial established with... -
Excavator-based processor operator productivity and cost analysis in Zululand, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: G Hogg --- Department of Forest and Wood Science, South Africa R Pulkki --- Department of Forest and Wood Science, South Africa P Ackerman --- Department of Forest and Wood Science, South AfricaOperator impact on productivity and cost using similar processor machines was addressed in this case study. The study had two objectives: (1) determine the extent of operator productivity variation between six processor operators in a harvesting operation; and (2) determine... -
Relationships between diameter and height of trees in natural tropical forest in Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Wilson A Mugasha --- Department of Ecology and Natural Resource Management, Norway Ole M Bollandsås --- Department of Ecology and Natural Resource Management, Norway Tron Eid --- Department of Ecology and Natural Resource Management, NorwayThe relationship between tree height (h) and tree diameter at breast height (dbh) is an important element describing forest stands. In addition, h often is a required variable in volume and biomass models. Measurements of h are, however, more time... -
Algal communities associated with aquatic macrophytes in some artificial ponds in Nyando District, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Balthazar Mpawenayo Christine CocquytThis study describes the algal communities of six ponds colonised by aquatic macrophytes in Nyanza Province, Kenya. Plankton samples were collected from the water column and epiphytic samples from macrophytes such as Azolla, Pistia, Nymphaea, Ipomoea and Ludwigia. Pond pH,... -
Groundwater seeps as potentially important refugia for freshwater fishes on the Eastern Shores of Lake St Lucia, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SvenM Vrdoljak RobC HartThe freshwater wetlands on the Eastern Shores of Lake St Lucia provide an important habitat for freshwater fishes, including a number of IUCN Red Listed species. The ecology of these wetlands is influenced greatly by water flowing from the large... -
Changes in algal composition and environmental variables in the high-altitude Mohale Dam — an important water supply reservoir to South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Sanet Janse van Vuuren Nicolene van der Walt Annelie SwanepoelWhereas limited knowledge exists on the ecology and algae present in Lesotho's high-altitude Katse Dam, nothing is published about these aspects in the linked Mohale Dam, completed in 2003. This study investigated the changes in algal composition and associated environmental... -
The fishery for, and local distribution of, Aristeus antennatus (Risso 1816) (Crustacea: Dendrobranchiata) off western Algeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Mouffok A Kherraz D Bouras Z BoutibaThis study presents data on the local distribution and yield of red shrimp Aristeus antennatus (Risso 1816) from a new deep-water fishery on the western Algerian slope obtained from commercial trawl fisheries at Oran and Arzew ports between 1999 and... -
The Bryozoa of subantarctic Marion and Prince Edward Islands: illustrated keys to the species and results of the 1982–1989 University of Cape Town surveys
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Branch PJ HaywardThe Bryozoa of subantarctic Marion and Prince Edward Islands were sampled over the period 1982–1989 by dredging, SCUBA-diving and intertidal surveys. This paper comprises illustrated keys to all 82 species of Bryozoa collected during these and previous surveys, including 15... -
A benthic survey of the rocky reefs off Pondoland, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Celliers BQ Mann AHH Macdonald MH SchleyerA subtidal marine biodiversity survey was carried out on shallow reefs (−1m to −30m) in the proclaimed Pondoland Marine Protected Area between Port Edward and Port St Johns, South Africa. A total of 26 benthic reef transects was undertaken involving... -
Management of avian cholera Pasteurella multocida outbreaks on Dyer Island, South Africa, 2002–2005
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LJ Waller LG UnderhillIn 2002 there was a widespread epizootic involving seabirds on five of the offshore islands of the Western Cape, South Africa. Since then, avian cholera Pasteurella multocida outbreaks have been occurring annually on one of these islands, Dyer Island. This... -
Large-scale changes in the spatial distribution of South African West Coast rock lobsters: an overview
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Cockcroft D van Zyl L HutchingsA major shift in resource availability in the West Coast rock lobster Jasus lalandii from the traditional fishing grounds on the West Coast to the more southern fishing grounds was observed between the late 1980s/early 1990s and the turn of... -
Divergent trends in bank cormorants Phalacrocorax neglectus breeding in South Africa's Western Cape consistent with a distributional shift of rock lobsters Jasus lalandii
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RJM Crawford AC Cockcroft BM Dyer L UpfoldIn South Africa's Western Cape Province, numbers of bank cormorants Phalacrocorax neglectus breeding at 11 localities decreased from above 500 pairs during 1978–1987 to 350 pairs from 1995 to 2006. The most northern colony (Lambert's Bay) was extinct by 1999... -
Balanus glandula: from North-West America to the west coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Simon-Blecher Z Granevitze Y AchituvWe report the occurrence of the North-East Pacific intertidal barnacle Balanus glandula in the south-western African shores of the Atlantic Ocean. In addition, an attempt is made to trace the origin of the South African population by comparing the distribution... -
Present distribution and abundance of the introduced barnacle Balanus glandula Darwin in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MC Laird CL GriffithsThe date of first introduction of the North-East Pacific acorn barnacle Balanus glandula to South Africa is unknown, but it is depicted in photographic records dating back to at least 1992. Its present range and population density were determined by... -
Impact of the Treasure oil spill on African penguins Spheniscus demersus at Dassen Island: case study of a rescue operation
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt LG Underhill R Altwegg J Visagie AJ WilliamsThe bulk ore carrier MV Treasure sank between Robben and Dassen islands off western South Africa in June 2000. Although releasing less oil than the Apollo Sea spill six years earlier, the number of African penguins Spheniscus demersus oiled (approximately... -
Restoration of oiled African penguins Spheniscus demersus a decade after the Apollo Sea spill
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt LG Underhill R Altwegg J VisagieThe bulk ore carrier Apollo Sea sank south-west of Dassen Island off western South Africa in June 1994, oiling approximately 10 000 African penguins Spheniscus demersus, most of which were collected from Dassen Island. A total of 4 076 de-oiled... -
Breeding success of African penguins Spheniscus demersus at Dassen Island, especially after oiling following the Apollo Sea spill
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt LG Underhill DC Nel AJ Williams J VisagieThe reproductive success of African penguins Spheniscus demersus at Dassen Island from 1994 to 2000 was variable, but much higher than previously reported figures for the species. Breeding success was positively related to the abundance of anchovy Engraulis encrasicolus and... -
Comparison of moult phenology of African penguins Spheniscus demersus at Robben and Dassen islands
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt LG Underhill RJM CrawfordDassen and Robben islands are approximately 50 km apart, and currently support the largest and third largest populations of African penguins Spheniscus demersus respectively. At both islands, moult is the most synchronised and seasonal activity of the annual cycle. The... -
Review of the rescue, rehabilitation and restoration of oiled seabirds in South Africa, especially African penguins Spheniscus demersus and Cape gannets Morus capensis, 1983–2005
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt AJ Williams LG Underhill RJM Crawford PA WhittingtonSouth Africa is a global hotspot for oil pollution. The regional oiled seabird cleaning centre, the South African Foundation for the Conservation of Coastal Birds (SANCCOB), has handled over 50 000 seabirds from its inception in 1968 until 2005. The... -
Breeding and moult phenology of African penguins Spheniscus demersus at Dassen Island
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt --- , South Africa LG Underhill --- Animal Demography Unit, Department of Zoology, South Africa J Visagie --- , South AfricaThe breeding and moult phenology of African penguins Spheniscus demersus at Dassen Island form part of a variable annual cycle. Between 1994 and 2006, African penguins bred throughout the year. Most of this period was characterised by favourable feeding conditions... -
Recent population estimates and trends in numbers of albatrosses and giant petrels breeding at the sub-Antarctic Prince Edward Islands
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PG Ryan --- , South Africa MGW Jones --- , South Africa BM Dyer --- Department of Environmental Affairs, South Africa L Upfold --- Department of Environmental Affairs, South Africa RJM Crawford --- Department of Environmental Affairs, South AfricaThe second mid-summer survey of surface-nesting seabirds at the Prince Edward Island group (Marion and Prince Edward islands) was conducted during December 2008, seven years after the initial mid-summer survey. Wandering albatrosses Diomedea exulans may have decreased slightly at Prince... -
A tale of two islands: contrasting fortunes for Subantarctic skuas at the Prince Edward Islands
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PG Ryan --- , South Africa PA Whittington --- , South Africa RJM Crawford --- Department of Environmental Affairs, South AfricaSubantarctic skuas Catharacta antarctica are key predators of burrowing petrels at sub-Antarctic islands, and can be used to monitor the health of burrowing petrel populations. A survey of skuas at the Prince Edward Islands was conducted during December 2008, repeating... -
Estimates of numbers of kelp gulls and Kerguelen and Antarctic terns breeding at the Prince Edward Islands, 1996/1997–2008/2009
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PA Whittington --- , South Africa RJM Crawford --- Department of Environmental Affairs, South Africa BM Dyer --- Department of Environmental Affairs, South Africa PG Ryan --- , South AfricaBreeding numbers of Laridae and other surface-nesting seabirds have been monitored at sub-Antarctic Marion Island since 1996/1997 and counts of breeding birds were made at nearby Prince Edward Island in December 2001 and December 2008. Four species are regular breeders... -
Vagrant birds ashore at the Prince Edward Islands, southern Indian Ocean, from 1987 to 2009
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WC Oosthuizen --- Mammal Research Institute, Department of Zoology and Entomology, South Africa BM Dyer --- Department of Environmental Affairs, South Africa PJN de Bruyn --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaVagrant birds recorded ashore at Marion Island and Prince Edward Island from 1987 to 2009 are documented. In total, 101 observations (including multiple sightings of potentially the same individual) of 29 species were made. Palaearctic and Holarctic migrants (17 species),... -
Summer survey of fur seals at Prince Edward Island, southern Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MN Bester --- Mammal Research Institute, Department of Zoology and Entomology, South Africa PG Ryan --- , South Africa J Visagie --- , South AfricaThe onshore distributions and the abundances of Antarctic fur seals Arctocephalus gazella and Subantarctic fur seals A. tropicalis were determined at Prince Edward Island during 16-20 December 2008. This repeats a survey conducted in December 2001 and extends the area... -
Intra-archipelago moult dispersion of southern elephant seals at the Prince Edward Islands, southern Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: WC Oosthuizen --- Mammal Research Institute, Department of Zoology and Entomology, South Africa MN Bester --- Mammal Research Institute, Department of Zoology and Entomology, South Africa PJN de Bruyn --- Mammal Research Institute, Department of Zoology and Entomology, South Africa GJG Hofmeyr --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaDuring three summer surveys at Prince Edward Island (PEI), southern Indian Ocean (2001, 2004 and 2008), 416 southern elephant seals Mirounga leonina were inspected for identification tags. In all, 42 seals that had been tagged as weaned pups at their... -
Climate change and desertification in South Africa—science and response
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: ERM Archer --- Climate Change, South Africa MA Tadross --- Climate Systems Analysis Group, South AfricaDespite significant attention paid to desertification and climate change in the last few decades, interactions between the phenomena, as well as implications thereof, have received less of a focus. Such a trend is particularly marked in the science– policy arena,... -
Determining grazing capacity in Namibia with the aid of remote sensing
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C Espach --- Ministry of Agriculture, LG Lubbe --- Ministry of Agriculture, N Ganzin --- Ifremer, FranceThe Namibian rangelands consist of a mixture of herbaceous and woody components. The main source of income is from farming systems with grass production the predominant source of forage. For rangeland managers to utilise this source sustainably, the accurate determination... -
A conceptual tool for improving rangeland management decision-making at grassroots level: the local-level monitoring approach
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: K Kellner --- School of Environmental Sciences and Development, South Africa AS Moussa --- School of Environmental Sciences and Development, South AfricaFor many years, rangeland monitoring has mainly been the field of scientists, academics and extension workers trying to fine-tune methods to assess the condition of rangelands. Frameworks and monitoring systems developed with their associated indicators are often complex and inaccessible... -
Some thoughts on policy and desertification: what key contributions can scientists make to policy processes in the southern African context?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J Zeidler --- Integrated Environmental Consultants Namibia (IECN), NamibiaTwo types of desertification professionals are typically characterised—the scientist and the policy-maker. After many years of efforts to combat desertification and promote sustainable land management, it is surprising that these diverging perceptions remain so fixed. They prevailed throughout the process... -
Institutions for sustainable land management: reflections on institutional aspects of implementing the UNCCD in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G von Maltitz --- Natural Resources and the Environment, South AfricaBy its nature, combating desertification is a complex, multidisciplinary activity that requires coordinated responses at a multitude of levels spanning both scientific disciplines and government departments. In the final analysis, it is at the level of the land user where... -
The impact of indigenous ungulate herbivory over five years (2004–2008) on the vegetation of the Little Karoo, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MT Hoffman --- Plant Conservation Unit, Botany Department, South Africa CF Madden --- Plant Conservation Unit, Botany Department, South Africa K Erasmus --- Sanbona Wildlife Reserve, South Africa N Saayman --- Department of Agriculture: Western Cape, South Africa JC Botha --- Department of Agriculture: Western Cape, South AfricaThis study investigated the impact of rainfall and herbivory by indigenous herbivores over five years (2004–2008) on the vegetation of the Sanbona Wildlife Reserve (SWR), a 54 000 ha privately owned conservation area in the Little Karoo. Changes in floristic... -
Soil erosion in the Herschel district of South Africa: changes over time, physical correlates and land users' perceptions
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S VetterSoil erosion in rangelands is widely believed to be caused primarily by overgrazing. The aims of this study, conducted in a severely eroded district under communal tenure, were to establish (1) how the extent and severity of soil erosion have... -
Dry season foraging preferences of cattle and sheep in a communal area of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J Bennett PC Lent PJC HarrisWe examined landscape and habitat (vegetation) scale foraging of cattle and sheep at two communal villages in the Eastern Cape, South Africa, to determine the key resources utilised during the dry season. At the landscape scale, cattle at both sites... -
Performance of Stylosanthes hamata in the rangelands of northern Ghana
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: SY Annor JR CofieStylosanthes hamata (stylo) was introduced into communities in the Northern Savanna Zone of Ghana in 1994 for rangeland improvement through oversowing. The objective of this study was to assess the performance of S. hamata in northern Ghana. The study was... -
Livestock grazing behaviour along a degradation gradient in the Somali region of eastern Ethiopia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Amaha Kassahun HA Snyman GN SmitLivestock grazing behaviour is poorly understood in the arid rangelands of Ethiopia, resulting in inadequate rangeland management and grazing systems, which are no improvement on the traditional practices by pastoralists. This study aimed at quantifying the influence of rangeland degradation... -
Effects of low rates of nitrogen and phosphorus fertilisers on productivity of an annual African clover, Trifolium quartinianum cultivar Mealton 5, for zero grazing in Kenyan highland smallholdings
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J Muthoni LMS AkundabweniZero grazing is the cornerstone of dairying in intensively cultivated smallholdings in Kenya. The cut and carry method of forage harvesting increasingly is leading to soil mining, especially of phosphorus (P) and nitrogen (N). This problem is more serious in... -
The effect of mulching and fertilising on growth of over-sown grass species in degraded rangeland in north-eastern Ethiopia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Kidane Gebremeskel PJ PieterseA study to investigate oversowing of grass species as a restoration strategy in severely degraded rangeland was carried out in the Allaidege rangeland in north-eastern Ethiopia. Locally collected seeds of three grass species (Enteropogon rupestris, Ischaemum afrum and Tragus berteronianus)... -
Challenges for emerging livestock farmers in Limpopo province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: ND MacLeod CK McDonald FP van OudtshoornLand redistribution schemes (e.g. Settlement Land Acquisition Grant and Land Redistribution for Agricultural Development) initiated since the mid-1990s in Limpopo province under national land reform programs have sought to introduce a new generation of previously disadvantaged people to commercial livestock... -
Exploring differences of soil quality as related to management in semiarid rangelands in the western Bophirima District, North West province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AS Moussa L van Rensburg K Kellner A BationoDifferences in land-use management may result in different rangeland condition (soil, vegetation and biodiversity) and productivity. Vegetation condition in contrasting land-use management systems is well documented in semiarid rangelands, but relatively little information is available on soil quality. This study... -
Vegetative traits predict grass species' invasiveness and the invasibility of restored grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: RWS Fynn --- School of Biological and Conservation Sciences, South Africa PD Wragg --- School of Biological and Conservation Sciences, South Africa CD Morris --- Agricultural Research Council, South Africa KP Kirkman --- School of Biological and Conservation Sciences, South Africa J Naiken --- School of Biological and Conservation Sciences, South AfricaUnderstanding how grass species' traits relate to their invasiveness and the invasibility of their monocultures can inform restoration of diverse grassland. We measured vegetative traits for 18 bunch grass species local to Pietermaritzburg (KwaZulu-Natal, South Africa) and measured their competitive... -
Testing for a decline in secondary productivity under desertification in subtropical thicket, South Africa, using Angora goats: lessons for experimental design
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: TA Milne --- Centre for African Conservation Ecology, Department of Zoology, South Africa GIH Kerley --- Centre for African Conservation Ecology, Department of Zoology, South AfricaThere are few tests of the predicted decline of secondary productivity in desertified rangelands, despite this being one of the major concerns around desertification. Subtropical thicket, largely used for goat pastoralism, suffers extensive transformation typical of desertification. We measured body... -
The influence of South Africa's post-apartheid land reform policies on bush encroachment and range condition: a case study of Fort Beaufort's municipal commonage
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: James R Puttick --- Plant Conservation Unit, Department of Biological Sciences, South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa James Gambiza --- Department of Environmental Science, South AfricaWe examined the effect of changes in land use and land tenure on bush encroachment and vegetation condition. An analysis of aerial photographs from three time steps (1949, 1985 and 2004) was used to document changes in woody plant density... -
The impact of land use on woody plant cover and species composition on the Grahamstown municipal commonage: implications for South Africa's land reform programme
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: James R Puttick --- Plant Conservation Unit, Department of Biological Sciences, South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa James Gambiza --- Department of Environmental Science, South AfricaUsing an analysis of aerial photographs from 1942, 1985 and 2004 we assessed the impact of changing land tenure and land-use regimes on the cover of thicket vegetation on the Grahamstown commonage. Land-use impacts were examined by comparing plant species... -
Testing pelargonic acid and pyraflufen-ethyl with glyphosate as alternatives to paraquat dichloride for the preparation of fire-break tracer lines at Underberg, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Keith M Little --- Nelson Mandela Metropolitan University, South Africa Ryan Nadel --- Institute for Commercial Forestry Research, South AfricaOver the past 31-year period, about 18 700 ha annum−1 of planted forests in South Africa have been lost through fire. In forested areas where the risk of fire entering compartments is always high, fire-break tracer lines are prepared by... -
Lipid accumulation and alkaline phosphatase activity in human preadipocytes isolated from different body fat depots
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: AT Ali --- Department of Chemical Pathology, National Health Laboratory Service, WF Ferris --- Division of Endocrinology, Department of Medicine, Faculty of Health Sciences, CB Penny --- Department of Medicine, M-T Van der Merwe --- University of Pretoria and Waterfall City Hospital, BF Jacobson --- Department of Haematology and Molecular Medicine, National Health Laboratory Service, JE Paiker --- Department of Chemical Pathology, National Health Laboratory Service, NJ Crowther --- Department of Chemical Pathology, National Health Laboratory Service,Background: Alkaline phosphatase (ALP) controls intracellular lipid accumulation in human preadipocytes, but it is not known whether ALP is expressed in all body fat depots, or whether it has a similar role at all sites. -
Autoimmune polyglandular syndrome type 1 in a 12-year-old Ugandan girl
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: D Kibirige --- Makerere University College of Health Sciences and Dermatology Unit, Mulago National Referral and Teaching Hospital, Uganda F Kambugu --- Makerere University College of Health Sciences and Endocrine Unit, Mulago National Referral and Teaching Hospital, UgandaAutoimmune polyglandular syndrome type 1 (APS-1), also known as autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy syndrome, is a very rare disorder of childhood. It is mainly characterised by the presence of at least two of the following: chronic mucocutaneous candidiasis, chronic hypoparathyroidism and... -
The Flemish model of training and supervision
Item type: Journal Article • Journal: South African Family Practice • Authors: HH Conradie --- University of Stellenbosch, SAH Moosa --- University of Witwatersrand, G Morris --- Nelson Mandela Medical School, C Van Deventer --- University of Witwatersrand, M Van Rooyen --- University of Pretoria, S Smith --- University of Pretoria, A Derese --- Centre for Education Development, Department of Family Medicine and Primary Health Care, Faculty of Medicine and Health Sciences, J De Maeseneer --- Head of Department of Family Medicine and Primary Health Care, -
A genetic diversity analysis of South African sorghum genotypes using SSR markers
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Alina Mofokeng --- African Centre for Crop Improvement, School of Agricultural, Earth, and Environmental Sciences, South Africa Hussein Shimelis --- African Centre for Crop Improvement, School of Agricultural, Earth, and Environmental Sciences, South Africa Pangirayi Tongoona --- African Centre for Crop Improvement, School of Agricultural, Earth, and Environmental Sciences, South Africa Mark Laing --- African Centre for Crop Improvement, School of Agricultural, Earth, and Environmental Sciences, South AfricaDiverse landraces of sorghum (Sorghum bicolor (L.) Moench) are widely grown by smallholder farmers in South Africa. The objective of the study was to assess the genetic diversity present in South African sorghum genotypes using genetic distances as measured by... -
The future of warm-season, tropical and subtropical forage legumes in sustainable pastures and rangelands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: James P Muir --- Borlaug Institute, South Africa William D Pitman --- Hill Farm Research Station, USA Jose C Dubeux --- Universidade Federal Rural de Pernambuco, Brazil Jamie L Foster --- Texas A&M AgriLife Research, USAForage legumes have the potential to contribute substantially to warm-season, subtropical and tropical pastures and rangelands. Compared to grasses, they have advantages in accessing subsoil nutrients and moisture; legumes typically concentrate protein in forage, even in infertile soils, and they... -
Estimating wood volume from canopy area in deciduous woodlands of Zimbabwe
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tawanda W Gara --- Department of Geography and Environmental Science, Zimbabwe Amon Murwira --- Department of Geography and Environmental Science, Zimbabwe Emmerson Chivhenge --- Department of Geography and Environmental Science, Zimbabwe Timothy Dube --- Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, South Africa Tsitsi Bangira --- SAEON Egagasini Node, South AfricaIn this study we tested the predictive ability of canopy area in estimating wood volume in deciduous woodlands of Zimbabwe. The study was carried out in four sites of different climatic conditions. We used regression analysis to statistically quantify the... -
Repeat photography as a tool for detecting and monitoring historical changes in South African coastal habitats
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B Reimers --- Centre for Invasion Biology and Department of Biological Sciences, South Africa CL Griffiths --- Centre for Invasion Biology and Department of Biological Sciences, South Africa MT Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South AfricaRepeat photography was used to illustrate long-term changes occurring in coastal habitats in the Western Cape, South Africa. Historic images were sourced from books and theses, the public and subject specialists, and repeat photographs were then taken from the same... -
Status and diurnal activity budget of non-breeding White-headed Ducks Oxyura leucocephala in Algeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Nedjwa Meziane --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria Farrah Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria Boudjéma Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, AlgeriaIn Algeria, the Globally Endangered White-headed Duck Oxyura leucocephala is resident throughout the year in the coastal wetlands of north-east Algeria and the Hauts Plateaux, where it occupies habitats that range from freshwater ponds and brackish marshes to hypersaline lakes... -
Interactions between stream channel incision, soil water levels and soil morphology in a wetland in the Hogsback area, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mohammed Y Omar --- Department of Agronomy, South Africa Pieter AL Le Roux --- Department of Soil, Crop and Climate Sciences, South Africa Johan J van Tol --- Department of Agronomy, South AfricaWetland degradation in the form of channel incisioning can significantly alter the hydrological functioning of a wetland. In this study in a small headwater wetland in the Hogsback area, Eastern Cape province, the impact of channel incisioning on soil water... -
Single parenting effects: resource access and coping of children in Swaziland
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: S'lungile K. Thwala --- Educational Foundations Department, Kayi Ntinda --- Educational Foundations Department, Ntombifuthi Mabuza --- Educational Foundations Department,This study investigated single parenting influences on the psychosocial development of children in Swaziland. Participants were a convenience sample of 24 students attending eight urban and rural schools (females = 54%; males =46%; age range 13–21). Data on experiences of single parenthood... -
Does estuarine health relate to catchment land-cover in the East Kleinemonde system, South Africa?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: VA Masefield --- Department of Geography, South Africa GK McGregor --- Department of Geography, South Africa AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaTemporarily open/closed estuaries in South Africa are being subjected to varying degrees of catchment land-cover transformation. Natural landscapes and hydrological functions are integral to the functioning of estuaries. The relationship between catchment land-cover and the health of the East Kleinemonde... -
Distribution of Lilian's Lovebirds in Malawi
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Tiwonge I Mzumara --- School of Life Sciences, South Africa Michael R Perrin --- School of Life Sciences, South Africa Colleen T Downs --- School of Life Sciences, South AfricaLilian's Lovebird Agapornis lilianae is regarded as a mopane Colophospermum mopane woodland specialist. Its global population is sparse and is spread along the Zambezi valley with little known about its current distribution and status. We explored the current distribution of... -
Breeding ecology of the Seychelles Black Parrot Coracopsis barklyi
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anna Reuleaux --- Seychelles Islands Foundation, Seychelles Heather Richards --- Seychelles Islands Foundation, Seychelles Terence Payet --- Seychelles Islands Foundation, Seychelles Pascal Villard --- Seychelles Islands Foundation, Seychelles Matthias Waltert --- Department of Conservation Biology, Germany Nancy Bunbury --- Seychelles Islands Foundation, SeychellesKnowledge of breeding ecology is required for many conservation interventions. The Seychelles Black Parrot Coracopsis barklyi, endemic to the island of Praslin, is vulnerable to extinction. We aimed to improve understanding of C. barklyi breeding ecology to aid conservation planning... -
Soil organic carbon and nitrogen stocks along a seasonal wetland (dambo) transect in central Zimbabwe
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: George Nyamadzawo --- Department of Soil Science and Agricultural Engineering, Zimbabwe Menas Wuta --- Department of Soil Science and Agricultural Engineering, Zimbabwe Justice Nyamangara --- International Crops Research Institute for the Semi Arid Tropics, Matopos Research Station, Zimbabwe Philip Nyamugafata --- Department of Soil Science and Agricultural Engineering, ZimbabweEcosystems of central and southern Africa are occupied by some of the largest seasonal wetlands commonly called dambos. Dambos are likely to store huge stocks of soil organic carbon (SOC) because of their saturated conditions. However, most available literature report... -
Water quality monitoring in sub-Saharan African lakes: a review of remote sensing applications
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Dube --- School of Agricultural, Earth and Environmental Sciences, South Africa O Mutanga --- School of Agricultural, Earth and Environmental Sciences, South Africa K Seutloali --- School of Agricultural, Earth and Environmental Sciences, South Africa S Adelabu --- Department of Geography, South Africa C Shoko --- School of Bioresources Engineering and Environmental Hydrology, South AfricaWater quality deterioration in sub-Saharan Africa has attained a scale that requires scientific intervention. It is therefore important to devise appropriate and reliable techniques to investigate the water quality of lakes and reservoirs for the development of water resource management... -
Seed removal by ants, birds and rodents in a woodland savanna habitat in Zimbabwe
Item type: Journal Article • Journal: African Zoology • Authors: Alicia V. Linzey --- Department of Biology, U.S.A. Kimberly A. Washok --- Department of Biology, U.S.A.Seed removal from bait stations was studied in miombo habitat in western Zimbabwe. Previous studies of seed predation in southern Africa have largely been conducted in desert ecosystems. However, this woodland-savanna habitat is more mesic and has relatively predictable rainfall... -
Effect of burn area on invertebrate recolonization in grasslands in the Drakensberg, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Charmaine Uys --- University of KwaZulu-Natal, South Africa Michelle Hamer --- University of KwaZulu-Natal, South Africa Robert Slotow --- University of KwaZulu-Natal, South AfricaOur study examined the short-term response of grassland invertebrate communities to fire in the South African Drakensberg, in relation to distance from the edge of a burn. We aimed to establish which species survive fire and the dynamics of the... -
Sexual size dimorphism in montane cordylid lizards: a case study of the dwarf crag lizard, Pseudocordylus nebulosus
Item type: Journal Article • Journal: African Zoology • Authors: Eloise Costandius --- Department of Botany & Zoology, South Africa P. le Fras N. Mouton --- Department of Botany & Zoology, South AfricaThe aim of this study was to provide information on sexual size dimorphism (SSD) in Pseudocordylus nebulosus and to discuss the observed variation in SSD among montane cordylids. Data for P. nebulosus were recorded in the Landdroskop area in the... -
Bird diversity and land use on the slopes of Mt Kilimanjaro and the adjacent plains, Tanzania
Item type: Journal Article • Journal: African Zoology • Authors: Eija Soini --- World Agroforestry Centre (ICRAF), KenyaThis study of bird distribution in the main land-use categories of the slopes of Mt Kilimanjaro, Tanzania, aims at understanding potential impacts of the land-use changes on birds. A land-use map of the study area was derived from a Landsat... -
Preliminary observations on the diet of leopards (Panthera pardus) from a conservation area and adjacent rangelands in the Baviaanskloof region, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Theresia Ott --- Centre for African Conservation Ecology, Department of Zoology, South Africa Graham I. H. Kerley --- Centre for African Conservation Ecology, Department of Zoology, South Africa André F. Boshoff --- Centre for African Conservation Ecology, Department of Zoology, South AfricaPastoralists on rangelands adjacent to the Baviaanskloof Provincial Nature Reserve, Eastern Cape, report stock losses through predation by leopards (Panthera pardus). This leads, in certain cases, to persecution of the leopards. This study attempted to quantify livestock depredation by leopards... -
Description of the tadpole of Amietia wittei (Anura: Pyxicephalidae) from the highlands of Kenya
Item type: Journal Article • Journal: African Zoology • Authors: Domnick Victor Wasonga --- National Museums of Kenya, Kenya Alan Channing --- University of the Western Cape, South AfricaThe tadpole of Amietia wittei (Anura: Pyxicephalidae) is described from the highlands of Kenya. It is distinguished from the tadpoles of Amietia ruwenzoriensis and A. angolensis in the region by the numbers of labial tooth rows. -
Haulout site selection by southern elephant seals at Marion Island
Item type: Journal Article • Journal: African Zoology • Authors: T. W. Mulaudzi --- Department of Zoology and Entomology, South Africa G. J. G. Hofmeyr --- National Zoological Gardens of South Africa, South Africa M. N. Bester --- National Zoological Gardens of South Africa, South Africa S. P. Kirkman --- National Zoological Gardens of South Africa, South Africa P. A. Pistorius --- National Zoological Gardens of South Africa, South Africa F. C. Jonker --- National Zoological Gardens of South Africa, South Africa A. B. Makhado --- National Zoological Gardens of South Africa, South Africa J. H. Owen --- Department of Statistics, South Africa R. J. Grimbeek --- Department of Statistics, South AfricaUsing data from an ongoing mark–resight programme at Marion Island, we tested empirically whether southern elephant seals prefer certain terrestrial sites to others during the breeding, moulting and winter haulouts, and whether the pattern of site use is the same... -
Evidence for density dependent population regulation in southern elephant seals in the southern Indian Ocean
Item type: Journal Article • Journal: African Zoology • Authors: P. A. Pistorius --- Department of Zoology and Entomology, South Africa F. E. Taylor --- Department of Zoology and Entomology, South Africa M. N. Bester --- Department of Zoology and Entomology, South Africa G. J. G. Hofmeyr --- Department of Zoology and Entomology, South Africa S. P. Kirkman --- Department of Zoology and Entomology, South AfricaThe means by which populations are regulated form a central theme in conservation biology, and much debate has revolved around density dependence as a mechanism driving population change. Marion Island (46°54‘S, 37°45‘E) is host to a relatively small breeding population... -
Small mammal diversity and density on the Bokkeveld escarpment, South Africa – implications for conservation and livestock predation
Item type: Journal Article • Journal: African Zoology • Authors: P. J. O‘Farrell --- Botany Department, South Africa J. S. Donaldson --- South African National Biodiversity Institute, South Africa M. T. Hoffman --- Botany Department, South Africa A. D. Mader --- South African National Biodiversity Institute, South AfricaA preliminary investigation of the diversity and density of small mammals in four structurally distinct habitat types in an actively-utilized farming landscape was carried out. We sought to understand how diversity and density are influenced by landscape structure, habitat structure... -
Aspects of the ecology of Cichlidogyrus philander collected from Pseudocrenilabrus philander philander from the Padda Dam, Gauteng, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Louise E. le Roux --- Department of Zoology, South Africa A. Avenant-Oldewage --- Department of Zoology, South Africa F. C. van der Walt --- Department of Statistics, South AfricaCichlidogyrus philander was originally described from Pseudocrenilabrus philander philander in Lake Kariba, Zimbabwe. Specimens from four fish species were collected during this study over a 14-month period from the Padda Dam, Johannesburg, transported to the laboratory and killed. Following examination,... -
Inshore occurrence of southern right whales (Eubalaena australis ) at Subantarctic Marion Island
Item type: Journal Article • Journal: African Zoology • Authors: M. Postma --- Department of Zoology and Entomology, South Africa M. Wege --- Department of Zoology and Entomology, South Africa M. N. Bester --- Department of Zoology and Entomology, South Africa D. S. van der Merwe --- Department of Zoology and Entomology, South Africa P. J. N. de Bruyn --- Department of Zoology and Entomology, South AfricaOpportunistic shore-based sightings of southern right whales Eubalaena australis for Marion Island (46°54’S, 37°45’E) were documented at five different times between 1974 and 2009. Whales were sighted between May and September and exclusively on the eastern lee side of the... -
Do deterministic processes influence the phenotypic patterns of animalivorous bat ensembles at urban rivers?
Item type: Journal Article • Journal: African Zoology • Authors: M. Corrie Schoeman --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, Westville Campus, South Africa Kirby J. Waddington --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, Westville Campus, South AfricaAlthough urbanization is perhaps the most damaging, persistent, and rapidly expanding form of anthropogenic pressure on natural ecosystems, data on the patterns and processes of sympatric bat species in urban landscapes are relatively scant. We quantified the packing and dispersion... -
Differences in diet between two rodent species, Mastomys natalensis and Gerbilliscus vicinus, in fallow land habitats in central Tanzania
Item type: Journal Article • Journal: African Zoology • Authors: Loth S. Mulungu --- Pest Management Centre, Sokoine University of Agriculture, Apia W. Massawe --- Pest Management Centre, Sokoine University of Agriculture, Jan Kennis --- University of Antwerp, Evolutionary Ecology Group, Belgium Dieter Crauwels --- University of Antwerp, Evolutionary Ecology Group, Belgium Seth Eiseb --- National Museum of Namibia, Namibia Themb’alilahlwa A. Mahlaba --- Department of Biological Sciences, Swaziland Ara Monadjem --- Department of Biological Sciences, Swaziland Rhodes H. Makundi --- Pest Management Centre, Sokoine University of Agriculture, Abdul A.S. Katakweba --- Pest Management Centre, Sokoine University of Agriculture, Herwig Leirs --- University of Antwerp, Evolutionary Ecology Group, Belgium Steven R. Belmain --- Natural Resources Institute, University of Greenwich, U.K.Differences in the ecological niche requirements among rodent species competing in the same habitat may result from differences in the use of one to three resources: space, time and food or some combination of these. Alternatively, differences in resource use... -
Spatial and temporal population dynamics of rodents in three geographically different regions in Africa: Implication for ecologically-based rodent management
Item type: Journal Article • Journal: African Zoology • Authors: Apia W. Massawe --- Pest Management Centre, Sokoine University of Agriculture, Tanzania Loth S. Mulungu --- Pest Management Centre, Sokoine University of Agriculture, Tanzania Rhodes H. Makundi --- Pest Management Centre, Sokoine University of Agriculture, Tanzania Nomfundo Dlamini --- Department of Biological Sciences, Swaziland Seth J. Eiseb --- National Museum of Namibia, Namibia Frikkie Kirsten --- Agricultural Research Council-Plant Protection Research Institute, South Africa Themb’alilahlwa Mahlaba --- Department of Biological Sciences, Swaziland Phanuel Malebane --- Agricultural Research Council-Plant Protection Research Institute, South Africa Emil Von Maltitz --- Agricultural Research Council-Plant Protection Research Institute, South Africa Ara Monadjem --- Department of Biological Sciences, Swaziland Peter Taylor --- Durban Natural Science Museum, Heritage and Libraries Department, South Africa Vassana Tutjavi --- National Museum of Namibia, Namibia Steven R. Belmain --- Natural Resources Institute, University of Greenwich, U.K.As part of a three-year study to develop ecologically-based rodent management (EBRM) in southern Africa, a capture–mark–recapture study was carried out in Tanzania, Namibia and Swaziland to establish the demographic patterns and population dynamics of rodents. Two study grids were... -
Freshwater invertebrates of sub-Antarctic Marion Island
Item type: Journal Article • Journal: African Zoology • Authors: Herbert J.G. Dartnall --- Department of Biological Sciences, Australia Valdon R. Smith --- Department of Botany and Zoology, South AfricaThe freshwater habitats (mires, streams, lakes, pools and wallows) on sub-Antarctic Marion Island were examined for invertebrates. Sixty-eight species were found, including 45 new records for the Island. Of these 56 were bona fide aquatic invertebrates, the rest being terrestrial... -
Breeding season of Epomophorus walhbergi in the lowveld of Swaziland
Item type: Journal Article • Journal: African Zoology • Authors: Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, Swaziland April E. Reside --- Centre for Tropical Biodiversity and Climate Change, James Cook University, AustraliaThe fruit bat Epomophorus wahlbergi is abundant in the eastern parts of southern Africa, but its breeding biology remains poorly documented. This study aimed to ascertain the breeding season of this species in northeastern Swaziland where 340 individuals were netted... -
The phylogeography of Lemniscomys striatus (Rodentia: Muridae) confirms a remarkable vicariant event in neighbouring savanna populations in Central Gabon
Item type: Journal Article • Journal: African Zoology • Authors: J. F. Mboumba --- Université des Sciences et Techniques de Masuku, Gabon V. Nicolas --- Muséum National d’Histoire Naturelle, Département de Systématique et Evolution, France M. Colyn --- Université de Rennes 1, France P. Deleporte --- Université de Rennes 1, FranceOur recent phylogeographic study on the strictly savanna small rodent Nannomys minutoides revealed an unexpected pattern of divergence between populations occupying neighbouring savanna islands in Central Gabon, suggesting the historical and continuing fragmentation of these savanna habitats. In this study,... -
Grassland bird response to vegetation structural heterogeneity and clearing of invasive bramble
Item type: Journal Article • Journal: African Zoology • Authors: Chevonne Reynolds --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South Africa Craig T. Symes --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South AfricaSpatial and temporal patterns of disturbance and the subsequent heterogeneity are critical in maintaining biodiversity within grassland ecosystems. Grassland birds have evolved within this ‘shifting mosaic’ to become reliant on specific habitat characteristics maintained under varying levels of both natural... -
In situ growth rate of Solen cylindraceus (Mollusca: Euheterodonta: Solenidae) in the St Lucia estuarine lake, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Holly A. Nel --- University of KwaZulu-Natal, Westville Campus, South Africa Renzo Perissinotto --- University of KwaZulu-Natal, Westville Campus, South Africa Ricky H. Taylor --- University of KwaZulu-Natal, Westville Campus, South AfricaSolen cylindraceus, an infaunal bivalve, can reach a maximum length of 95 mm. However, in the St Lucia estuarine system specimens are seldom larger than 55 mm. Thus, the primary aim of this study was to investigate the growth rate... -
Breeding density of the southern ground hornbill, Bucorvus leadbeateri, in the communal areas surrounding the Matobo National Park, Zimbabwe
Item type: Journal Article • Journal: African Zoology • Authors: Minke Witteveen --- University of KwaZulu-Natal, South Africa Elspeth Parry --- , South Africa Mark Norris-Rogers --- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, South Africa Mark Brown --- University of KwaZulu-Natal, South AfricaThe southern ground hornbill, Bucorvus leadbeateri, is on the IUCN Red List of Threatened Species as a ‘Vulnerable’ species with a decreasing population. Despite a myriad of threats, including loss of nesting sites, accidental poisoning and persecution, there has been... -
Climate and the evolution of group-living behaviour in the armadillo lizard (Ouroborus cataphractus)
Item type: Journal Article • Journal: African Zoology • Authors: Cindy Shuttleworth --- Department of Botany and Zoology, South Africa P. le Fras N. Mouton --- Department of Botany and Zoology, South Africa Adriaan van Niekerk --- Department of Geography and Environmental Studies, South AfricaWe evaluated the hypothesis that the regular use of the southern harvester termite, Microhodotermes viator, as food source by the armadillo lizard, Ouroborus cataphractus, originated as an adaptation to survive the summer dry season in a climatic regime where rainfall... -
Zooplankton and diatoms of temporary and permanent freshwater pans in the Mpumalanga Highveld region, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Luisa Riato --- Department of Paraclinical Sciences, South Africa Carin Van Ginkel --- Cripsis Environment, South Africa Jonathan C. Taylor --- School of Biological Sciences, North-West University, South AfricaThis paper provides a description of the zooplankton and epiphytic diatom communities of permanent and temporary freshwater pans in the Mpumalanga Highveld region of South Africa. Few studies have investigated the biota of pans in this area, which is seriously... -
An example of burrow system architecture of dispersing Damaraland mole-rats
Item type: Journal Article • Journal: African Zoology • Authors: Cornelia Voigt --- Department of Zoology and Entomology, South AfricaThe Damaraland mole-rat (Fukomys damarensis) is a social, subterranean rodent that occurs in the red Kalahari sands. This species exhibits extreme reproductive skew with a single breeding female whereas reproduction in subordinate group members is completely blocked. Rainfall, as it... -
Meso-zooplankton movement through the newly constructed Mfolozi channel into and out of the St Lucia Estuary, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Sean van Elden --- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, South Africa Michael J. Dyer --- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, South Africa Nicola K. Carrasco --- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, South Africa Renzo Perissinotto --- School of Life Sciences, University of KwaZulu-Natal, Westville Campus, South AfricaThe historical canalization of the Mfolozi River resulted in the St Lucia Estuary losing its main freshwater source. This, combined with the recent drought, led to low water levels, hypersaline conditions and dramatic losses in biodiversity. The excavation of a... -
Reducing the overall HIV-burden in South Africa: is ‘reviving ABC’ an appropriate fit for a complex, adaptive epidemiological HIV landscape?
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Christopher J Burman --- The Rural Development and Innovation Hub, South Africa Marota Aphane --- The Rural Development and Innovation Hub, South Africa Peter Delobelle --- School of Public Health, South AfricaThis article questions the recommendations to ‘revive ABC (abstain, be faithful, condomise)’ as a mechanism to ‘educate’ people in South Africa about HIV prevention as the South African National HIV Prevalence, Incidence and Behaviour Survey, 2012, suggests. We argue that... -
Grazing depletes forb species diversity in the mesic grasslands of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Rob Scott-Shaw --- Ezemvelo KZN Wildlife, South Africa Craig D Morris --- Agricultural Research Council–Animal Production Institute, South AfricaForbs constitute over 80% of the species richness of mesic grassland but their response to grazing is largely unknown. The influence of grazing on the forb composition, richness and diversity of two species-rich grasslands in the coastal hinterland and midlands... -
The role of reproduction in Glyceria maxima invasion
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lutendo F Mugwedi --- Agricultural Research Council–Plant Protection Research Institute, South Africa Jeremy Goodall --- Agricultural Research Council–Plant Protection Research Institute, South Africa Edward TF Witkowski --- School of Animal, Plant and Environmental Sciences, South Africa Marcus J Byrne --- School of Animal, Plant and Environmental Sciences, South AfricaGlyceria maxima (Poaceae) is regarded as one of the most invasive grasses worldwide, but has only recently become naturalised in South Africa after its intentional introduction as a fodder crop in the 1940s. It invades seasonally inundated habitats. The primary... -
Predation drives nesting success in moist highland grasslands: the importance of maintaining vegetation cover for bird conservation
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ian T Little --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Raymond Jansen --- Department of Environmental, Water and Earth Sciences, South AfricaBy focusing on process-oriented data rather than inventory-type data, this study provides a robust understanding of the effects of agricultural management on grassland bird reproductive output in the moist highland grasslands (MHGs) of South Africa. Four-hundred and four nests of... -
Blue Petrels Halobaena caerulea discovered breeding on Gough Island
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Ben J Dilley --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Christopher Jones --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Alexander L Bond --- RSPB Centre for Conservation Science, UKThe Blue Petrel Halobaena caerulea breeds at five subantarctic island groups and at islands off southern Chile in a narrow latitudinal band from 47° to 56° S on either side of the Antarctic Polar Front. We found a colony on... -
Elevated temperatures drive fine-scale patterns of habitat use in a savanna bird community
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Rowan O Martin --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Susan J Cunningham --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Philip AR Hockey --- ,Many animals use thermally buffered microhabitats, e.g. patches of shade within trees, to avoid temperature extremes. These ‘thermal refugia’ may mediate the impact of climate change on animals. Predicting how species and communities will respond to rising temperatures therefore requires... -
Movement ecology of five Afrotropical waterfowl species from Malawi, Mali and Nigeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: John Y Takekawa --- US Geological Survey, USA Shane R Heath --- US Geological Survey, USA Samuel A Iverson --- US Geological Survey, USA Nicolas Gaidet --- CIRAD, UPR AGIRs, Campus international de Baillarguet, France Julien Cappelle --- CIRAD, UPR AGIRs, Campus international de Baillarguet, France Tim Dodman --- Hundland, UK Ward Hagemeijer --- Wetlands International, The Netherlands William D Eldridge --- US Fish and Wildlife Service, USA Scott A Petrie --- Long Point Waterfowl, Canada Gregory S Yarris --- US Geological Survey, USA Shiiwua Manu --- AP Levantis Ornithological Research Institute, Nigeria Glenn H Olsen --- US Geological Survey, USA Diann J Prosser --- US Geological Survey, USA Kyle A Spragens --- US Geological Survey, USA David C Douglas --- US Geological Survey, USA Scott H Newman --- Food and Agriculture Organization of the United Nations, VietnamHabitat availability for Afrotropical waterbirds is highly dynamic with unpredictable rainfall patterns and ephemeral wetlands resulting in diverse movement strategies among different species. Movement strategies among waterfowl encompass resident, regional and intercontinental migrants, but little quantitative information exists on their... -
Crop model usefulness in drylands of southern Africa: an application of DSSAT
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nkulumo Zinyengere --- Climate System Analysis Group, Department of Environmental and Geographical Science, South Africa Olivier Crespo --- Climate System Analysis Group, Department of Environmental and Geographical Science, South Africa Sepo Hachigonta --- Food Agriculture and Natural Resources Policy Analysis Network, South Africa Mark Tadross --- United Nations Development Programme – Global Environment Facility, South AfricaCrop models are useful tools for simulating impacts of climate and agricultural practices on crops. Models have to demonstrate the ability to simulate actual crop growth response in particular environments before application. Data limitations in southern Africa frequently hinder adequate... -
Grazing capacity, milk production and milk composition of kikuyu over-sown with annual or perennial ryegrass
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Janke van der Colf --- Western Cape Department of Agriculture, South Africa Philip R Botha --- Western Cape Department of Agriculture, South Africa Robin Meeske --- Western Cape Department of Agriculture, South Africa Wayne F Truter --- Department of Plant Production and Soil Science, South AfricaKikuyu (Pennisetum clandestinum) is a highly productive pasture species that supports high stocking rates and milk production per hectare, but production per cow is low due to low nutritive value. The aim of this study was to determine the grazing... -
Visual obstruction as a method to quantify herbaceous biomass in southern African semi-arid savannas
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Dave Joubert --- Polytechnic of Namibia, Namibia Larkin A Powell --- School of Natural Resources, USA Walter H Schacht --- Department of Agronomy and Horticulture, USABiomass of aboveground vegetation is a useful descriptor for studies of grazing, fire and wildlife habitat use in grassland systems. The traditional method to estimate biomass, hand-clipping, is time intensive and other indices of biomass have been used successfully. In... -
The Buysdorp conundrum: constructing and articulating community and identity in Soutpansberg, Limpopo Province
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Michael de Jongh --- Department of Anthropology and Archaeology,Coenraad de Buys, the great-grandson of Jean du Bois, a Huguenot immigrant from Calais, France, was by all accounts a formidable man. He left an indelible, often disruptive, mark on the historical, political and sociocultural landscape of South Africa. Coenraad... -
Land is for people—experiences of the community of Khuis
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: PA Erasmus --- Department of Anthropology,This study is an investigation into the social history of the Tlharo, with the aim of articulating and clarifying the particular nature of their experiences in respect of land-related issues. Their circumstances are described against the background of the course... -
The roots and complexity of the land issue and of land claims in South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: FC de Beer --- Department of Anthropology and Archaeology,Land reform and land restitution are current and emotional issues in South Africa and a scrutiny of the antecedent events and processes is crucial for an understanding of the complexities involved. Comprehending the land issue requires a reflection on the... -
Koranna struggle against the colonial church: the case of Brandewynsfontein
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Piet Erasmus --- Department of Anthropology,Although Goliath Yzerbek, in his struggle to safeguard the perceived land rights of the Koranna, had to deal with many more obstacles than the colonial church, only the interactions of the Berlin Missionary Society with the Koranna of Brandewynsfontein will... -
Medicine from the Father: Bossiesmedisyne, people, and landscape in Kannaland
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Joshua B. Cohen --- University of Cape Town, South AfricaIn the rural Western Cape local municipality of Kannaland, the word ‘bossiesmedisyne’ (lit. bushes medicine), refers to plant and sometimes animal material used to treat and alleviate a wide range of health problems, ranging from colds to cancer. Based on... -
An exposé ethnography of Zimbabwe's internally displaced ex-farm workers: Practical and ethical dilemmas
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Andrew Hartnack --- Department of Anthropology,From 2000 onwards, Zimbabwe's often violent land invasions displaced at least 500 000 farm workers from white-owned commercial farms across the country. While studies subsequently conducted on the land invasions tended to focus on their impact on farm workers who... -
Memory, landscape and event: How Ndebele labour tenants interpret and reclaim the past
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Chris J van Vuuren --- Department of Anthropology and Archaeology,The article discusses the roots of memory of former Ndebele labour tenants, and how these memories manifest in landscape, object and event. Recognising the role of history that bound most of the Ndundza community into labour tenancy, the author unpacks... -
Liminoid religion: Ritual practice in alternative spirituality in the Netherlands
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: P.G.A. Versteeg --- VISOR/Faculty of Theology, The NetherlandsAlternative spirituality can be seen as a particular form of religious practice related to processes of de-traditionalisation and deinstitutionalisation. Although often regarded as a western, secularised phenomenon, such alternative forms of spirituality are becoming increasingly popular among the middle classes... -
Egg morphology of Swift Terns in South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Davide Gaglio --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Timothée R Cook --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Richard B Sherley --- Animal Demography Unit and Marine Research Institute, Department of Biological Sciences, South AfricaMorphology of Swift Tern Thalasseus bergii bergii eggs was examined on Robben Island, South Africa. A recently formed colony was found abandoned en masse, probably following human disturbance, and 146 freshly laid eggs were collected. The mean±SD nest density was... -
A survey for the Critically Endangered Liben Lark Heteromirafra archeri in Somaliland, north-western Somalia
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michael SL Mills --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Callan Cohen --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Julian Francis --- Tolpuddle Manor, UK Claire N Spottiswoode --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South AfricaThe Critically Endangered Archer's Lark (now Liben Lark) Heteromirafra archeri was formerly considered to be endemic to north-western Somalia and known only from the Tog Wajaale Plain, where 18 specimens were collected between 1918 and 1922. Fifteen visits between 1970... -
Characteristics and landcover of estuarine boundaries: implications for the delineation of the South African estuarine functional zone
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: DA Veldkornet --- Department of Botany, South Africa JB Adams --- Department of Botany, South Africa L van Niekerk --- Department of Botany, South AfricaThis study investigated whether the current lateral boundary for estuaries in South Africa, i.e. the estuarine functional zone (EFZ), includes all estuarine habitats. The EFZ covers 173 930 ha in 304 estuaries/outlets nationally. Field surveys and analysis of available aerial... -
Spatial and seasonal patterns of European short-snouted seahorse Hippocampus hippocampus distribution in island coastal environments
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Otero-Ferrer --- Grupo de Investigación en Acuicultura, Spain R Herrera --- Dirección General de Ordenación del Territorio, Spain VM Tuset --- Instituto de Ciéncias del Mar (CSIC), Spain J Socorro --- Grupo de Investigación en Acuicultura, Spain L Molina --- Grupo de Investigación en Acuicultura, SpainThis study represents the first report on seahorses in the Macaronesian islands (North-East Atlantic), determining the spatial and seasonal abundance, population structure and physical appearance of European short-snouted seahorse Hippocampus hippocampus. Animals were surveyed off Gran Canaria Island in two... -
Entrepreneurial innovations for agricultural mechanisation in Zimbabwe: Evidence from an informal metal industry survey
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kingstone Mujeyi --- Department of Agricultural Economics, Zimbabwe Jackqueline Mutambara --- Department of Agricultural Economics and Extension, Zimbabwe Shephard Siziba --- Department of Agricultural Economics and Extension, Zimbabwe Wilbert Z. Sadomba --- Centre for Applied Social Sciences, Zimbabwe Tarisai K. Manyati --- Department of Sociology, ZimbabweThis study uses data collected from 602 randomly selected informal metal industry entrepreneurs across 15 cluster-sampled districts in eight of Zimbabwe's 10 provinces to analyse factors that influence technological innovations development by informal agribusiness entrepreneurs. It applies a binary logistic... -
Seed removal by ants, birds and rodents in a woodland savanna habitat in Zimbabwe
Item type: Journal Article • Journal: African Zoology • Authors: Alicia V. Linzey --- Department of Biology, U.S.A. Kimberly A. Washok --- Department of Biology, U.S.A.Seed removal from bait stations was studied in miombo habitat in western Zimbabwe. Previous studies of seed predation in southern Africa have largely been conducted in desert ecosystems. However, this woodland-savanna habitat is more mesic and has relatively predictable rainfall... -
Preliminary comparison of calls of the hybridizing fur seals Arctocephalus tropicalis and A. gazella
Item type: Journal Article • Journal: African Zoology • Authors: M. St Clair Hill --- Mammal Research Institute, Department of Zoology & Entomology, South Africa J.W.H. Ferguson --- Mammal Research Institute, Department of Zoology & Entomology, South Africa M.N. Bester --- Mammal Research Institute, Department of Zoology & Entomology, South Africa G.I.H. Kerley --- Mammal Research Institute, Department of Zoology & Entomology, South AfricaThe Antarctic fur seal (Arctocephalus gazella) and the Subantarctic fur seal (A. tropicalis) hybridize on a relatively small scale at Marion Island. To date the description of calls published for A. tropicalis and A. gazella are fragmented and not easily... -
Termite species richness, composition and diversity on five farms in southern Kunene region, Namibia
Item type: Journal Article • Journal: African Zoology • Authors: J. Zeidler --- Integrated Environmental Consultants Namibia, Namibia S. Hanrahan --- Department of Animal, Plant and Environmental Sciences, South Africa M. Scholes --- Department of Animal, Plant and Environmental Sciences, South AfricaA survey was conducted on five farms in former Damaraland, a communal farming area in arid northwestern Namibia. The aims of the survey were to establish termite inventories for each site and to investigate whether termite diversity is determined by... -
Pup growth and maternal attendance patterns in Subantarctic fur seals
Item type: Journal Article • Journal: African Zoology • Authors: S.P Kirkman --- Mammal Research Institute, Department of Zoology and Entomology, South Africa M.N. Bester --- Mammal Research Institute, Department of Zoology and Entomology, South Africa G.J.G. Hofmeyr --- Mammal Research Institute, Department of Zoology and Entomology, South Africa P.A. Pistorius --- Mammal Research Institute, Department of Zoology and Entomology, South Africa A.B. Makhado --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaSamples of pups from the expanding populations of Subantarctic fur seals (Arctocephalus tropicalis) atMarion and Gough islands were weighed at specific ages between birth and weaning in the period 1993-2000. Growth was estimated and compared between years, sexes, sites of... -
Uptake and distribution of copper in the freshwater crab Potamonautes perlatus (Crustacea) in the Eerste River, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: R.G. Snyman --- Department of Zoology, South Africa A.J. Reinecke [AN0001] J.A.J. Nel --- Department of Zoology, South AfricaThe uptake and distribution of copper in the freshwater crab Potamonautes perlatus in the Eerste River, South Africa, were studied seasonally by comparing copper concentrations in crabs, water and sediment at two localities, one upstream and one downstream from the... -
An assessment of biodiversity surrogacy options in the Limpopo Province of South Africa
Item type: Journal Article • Journal: African Zoology • Authors: B. Reyers --- Conservation Planning Unit, South Africa K.J. Wessels --- Geo Informatics Division, Institute for Soil, South Africa A.S. van Jaarsveld --- Conservation Planning Unit, South AfricaBecause of the inadequacy of existing biodiversity distribution data, surrogate measures for regional biodiversity have long been used in conservation area selection. These measures include species and environmental data. However, the assumed relationship between surrogate measures and regional biodiversity has... -
Goose barnacles on seals and a penguin at Gough Island
Item type: Journal Article • Journal: African Zoology • Authors: Ryan R. Reisinger --- Mammal Research Institute, Department of Zoology and Entomology, South Africa Marthán N. Bester --- Mammal Research Institute, Department of Zoology and Entomology, South AfricaDuring a survey of seals in September and October 2009 at Gough Island, South Atlantic Ocean, we recorded goose barnacles (Lepas australis) attached to the pelage of two of the 12 elephant seals (Mirounga leonina) inspected and one of the... -
Phylogeography of the African common toad, Amietophrynus regularis, based on mitochondrial DNA sequences: inferences regarding the Cape Verde population and biogeographical patterns
Item type: Journal Article • Journal: African Zoology • Authors: R. Vasconcelos --- CIBIO UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Portugal E. Froufe --- CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Portugal J.C Brito --- CIBIO UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Portugal S. Carranza --- Institute of Evolutionary Biology (CSIC UPF), Passeig Marítim de la Barceloneta, Spain D.J. Harris --- CIBIO UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, PortugalThe amphibian Amietophrynus regularis is distributed throughout equatorial Africa, with presumed introduced populations in the Cape Verde archipelago. Portions of the 12S and 16S rRNA mitochondrial regions of 30 specimens from Kenya, Uganda, Niger, Mali, Burkina-Faso, Ghana, Guinea-Bissau and Cape... -
Assessing the threat of avian predation on a small viperid snake
Item type: Journal Article • Journal: African Zoology • Authors: Bryan Maritz --- School of Animal, Plant and Environmental Sciences, South Africa Samantha Scott --- School of Animal, Plant and Environmental Sciences, South AfricaPredators are important because they influence survival rates, population density and behaviour of prey species. However, assessing the predation pressure facing a particular species is difficult when that species faces a suite of predators. We aimed to characterize the suite... -
South African consumers’ selection criteria for ornamental plants: a market perspective
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Lorraine Middleton --- Department of Biology, South AfricaThe considerations of South African consumers in the ornamental plant sector can be interpreted as selection criteria and be used as a marketing tool to increase the use of indigenous plants for ornamental purposes locally. A countrywide survey was undertaken... -
Determinants of the occurrence of a native encroacher species, Pechuelloeschea leubnitziae (wild sage), in the eastern Okavango Delta, Botswana
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Michelle J Tedder --- Grassland Science, School of Life Sciences, South Africa Kevin P Kirkman --- Grassland Science, School of Life Sciences, South Africa Craig D Morris --- Agricultural Research Council, c/o School of Life Sciences, South Africa Winston SW Trollope --- Research and Development, South Africa Mpaphi C Bonyongo --- Okavango Research Institute, BotswanaAlthough indigenous to southern Africa, Pechuel-loeschea leubnitziae is considered a problematic weed as it forms dense monotypic stands in the grasslands and woodlands of the Okavango Delta, Botswana, and is associated with veld degradation and a dominance of shade-tolerant, poor-quality... -
The impact of livestock grazing management systems on soil and vegetation characteristics across savanna ecosystems in Botswana
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Olaotswe E Kgosikoma --- Department of Agricultural Research, Botswana Witness Mojeremane --- Botswana College of Agriculture, Botswana Barbra Harvie --- University of Edinburgh, UKThe objective of this study was to determine the impact of livestock grazing management systems on soil and vegetation dynamics under different environmental conditions of Botswana. Soil and vegetation were randomly sampled along transects located in three ranches and adjacent... -
Evolutionary retention of defensive lateral pedal glands in the smallest siphonariid limpet (Gastropoda: Pulmonata)
Item type: Journal Article • Journal: African Zoology • Authors: Shirley C Pinchuck --- Electron Microscope Unit, Rhodes University, South Africa Brian R Allanson --- Department of Zoology and Entomology, South Africa Alan N Hodgson --- Department of Zoology and Entomology, South AfricaDespite its cryptic habitat and habits, light and transmission electron microscopy has revealed that like many other siphonariids Siphonaria compressa, the smallest species of this genus, possesses lateral pedal glands. The pear-shaped glands (about 120 µm long×70 µm maximum diameter)... -
Urban cemeteries in Swaziland: materialising dignity
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Casey Golomski --- Department of Social Anthropology, South AfricaThis photo essay traces the materiality of urban cemeteries in Swaziland to underscore the production of dignity in contemporary funeral culture. Increasingly, death and burial in town are realities for many people who have lost social ties or land tenure... -
Frontiers of freedom: race, landscape and nationalism in the coastal cultures of South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Leslie Bank --- Fort Hare Institute of Social and Economic Research, South AfricaThe idea that whiteness is not a natural category but one which requires construction, maintenance and investment has provoked a rich scholarship, including in South Africa. The scholarship on whiteness in southern Africa has been marked, in particular, by a... -
Competing prayers: the making of a Nigerian urban landscape
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Ulrika Trovalla --- The Nordic Africa Institute, SwedenWhile Christians are seen as aspiring to make the Nigerian city of Jos into a Christian city, Muslims are believed to be trying to turn Jos into a Muslim city. There is a struggle over the urban landscape that is... -
Estimation of stability-related soil properties using mid-infrared spectroscopy for non-agricultural land use in Lake Victoria basin, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: B. K. Waruru --- Kenya Agricultural and Livestock Research Organization (KALRO), Kenya K. D. Shepherd --- World Agroforestry Centre (ICRAF), Kenya G. M. Ndegwa --- Jomo Kenyatta University of Agriculture and Technology (JKUAT), Kenya A. Sila --- World Agroforestry Centre (ICRAF), Kenya P. T. Kamoni --- Kenya Agricultural and Livestock Research Organization (KALRO), KenyaMethods for rapid and accurate soil tests are needed for stability-related soil properties, which are valuable for non-agricultural land use. The study tested the applicability of mid-infrared (MIR) spectroscopy for rapid estimation of selected stability-related soil properties. Two sample sets,... -
Classification of unregulated landfills by waste stream analysis method, a case of Chief Albert Luthuli Municipality, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Fannie Machete --- Department of Environmental Health, South Africa Karabo Shale --- Department of Environmental Health, South AfricaThe characterisation of unregulated landfills as general landfills is misleading particularly because these landfills are used to dispose of a mixed stream of general and hazardous waste. Unregulated landfills are unlicensed on-land waste disposal facilities that are not designed, constructed... -
An approach to land capability evaluation for agriculture using remote sensing and GIS in Barberspan, North West Province of South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: T.H. Kabanda --- Department of Geography and Environmental Science, South AfricaTo guarantee food security, job creation and graduate small-scale farmers to commercial farmers, unproductive farms in the North West Province that have resulted from the land reform programme need to be restructured and evaluated for agricultural productivity. This study aimed... -
Statistical assessment of maize leaf nutrient and yield relationships in rural agriculture in the Mbizana area, Eastern Cape province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Danie J Beukes --- Agricultural Research Council–Institute for Soil, South Africa Gcina G Jezile --- Agricultural Research Council–Institute for Soil, South Africa Thembisile C Mapumulo --- Agricultural Research Council–Institute for Soil, South Africa Thomas P Fyfield --- Agricultural Research Council–Institute for Soil, South AfricaA medium-term study was conducted under dry land to develop regression models to predict maize yield from leaf analyses for cost-effective fertiliser recommendations. Treatments consisted of lime, organic and inorganic fertiliser applications in a randomised complete block design with three... -
Population density of the Réunion Grey White-eye Zosterops borbonicus within the summit ecosystems of Réunion, Mascarene Islands
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Joris AM Bertrand --- Laboratoire Évolution et Diversité Biologique, France Yann XC Bourgeois --- Laboratoire Évolution et Diversité Biologique, France Christophe Thébaud --- Laboratoire Évolution et Diversité Biologique, FranceAssessing population density is crucial for studying the ecology and evolutionary biology of species as well as for conservation purposes. Here we used point count methods to infer population density in a single-island endemic passerine bird, the Réunion Grey White-eye... -
Assessing the value of wetlands to waterbirds: exploring a population-based index at flyway and regional levels
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Doug M Harebottle --- Animal Demography Unit, Department of Biological Sciences, South Africa Les G Underhill --- Animal Demography Unit, Department of Biological Sciences, South AfricaTraditionally, species richness, species diversity, total count, biomass, energy consumption and the Ramsar ‘1% threshold’ have been used to assess the importance of wetlands for waterbirds. Designation of wetlands of international importance (Ramsar sites) based on waterbirds has focused on... -
Longevity and survival of the Endangered Seychelles Magpie Robin Copsychus sechellarum
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Julie Gane --- Cousine Island, Seychelles April Burt --- Nature Seychelles, SeychellesThe Seychelles Magpie Robin Copsychus sechellarum was once one of the most threatened birds in the world, but was downgraded from Critically Endangered to Endangered after a long-term recovery programme was success- fully implemented. Comprehensive long-term monitoring of this species... -
Feeding ecology of four livestock species under different management in a semi-arid pastoral system in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Igshaan Samuels --- Agricultural Research Council–Animal Production Institute, Department of Biodiversity and Conservation Biology, South Africa Clement Cupido --- Agricultural Research Council–Animal Production Institute, Department of Biodiversity and Conservation Biology, South Africa Melvin B Swarts --- Agricultural Research Council–Animal Production Institute, Department of Biodiversity and Conservation Biology, South Africa Anthony R Palmer --- Agricultural Research Council–Animal Production Institute, South Africa Jamie W Paulse --- Agricultural Research Council–Animal Production Institute, Department of Biodiversity and Conservation Biology, South AfricaThe Leliefontein communal area in Namaqualand is grazed by mixed species herds that have multiple benefits for pastoralists. This study assessed how the management (herding and free-ranging) of different livestock herds affects their feeding ecology during the wet and dry... -
The effects of fire-breaks on plant diversity and species composition in the grasslands of the Loskop Dam Nature Reserve, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Laura M Bachinger --- Department of Plant Science, South Africa Leslie R Brown --- Applied Behavioural Ecology and Ecosystem Research Unit, Department of Environmental Sciences, South Africa Margaretha W van Rooyen --- Department of Plant Science, South AfricaThere is a dearth of knowledge on the effects of annual burning of fire-breaks on species composition, plant diversity and soil properties. Whittaker's plant diversity technique was used to gather data on species composition and diversity in four grassland communities... -
The nearest-plant method is robust and powerful enough for different survey teams to monitor change in mesic grassland species composition
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Alan Short --- Themeda Eco Consulting, South Africa Craig Morris --- Agricultural Research Council–Livestock Business Division, Range and Forage Unit, c/o School of Biological and Conservation Sciences, South AfricaA long-term rangeland monitoring programme needs to employ a field survey technique that is practicable, precise, powerful enough to distinguish change, not prone to worker bias, and able to distinguish real change from operator error arising from staff turnover. These... -
Carbon stocks of the terraces of the Lower Tana River floodplain and delta, Kenya, prior to conversion for biofuel production
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LV Mukhwana --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya Q Luke --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya E Delmas --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya K Otoi --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya O Hamerlynck --- Kenya Wetlands Biodiversity Research Team (KENWEB), Kenya L Vandepitte --- Flanders Marine Institute (VLIZ), Belgium B Adkins --- Dadacha Consulting Ltd, KenyaFew studies have addressed the terraces adjacent to the Tana River and delta. In May 2012 a survey assessed the woody vegetation of the terraces in anticipation of their conversion to a biofuel farm. The 64 000 hectares targeted by... -
Recent population trends of sooty and light-mantled albatrosses breeding on Marion Island
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Schoombie --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South Africa RJM Crawford --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa AB Makhado --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South Africa BM Dyer --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa PG Ryan --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South AfricaSub-Antarctic Marion Island is one of the few islands where both species of Phoebetria albatrosses breed sympatrically. The last published assessment of their population trends, which reported counts up to 2008, concluded that the numbers of breeding pairs of sooty... -
Genetic diversity of bottle gourd (Lagenaria siceraria (Molina) Standl.) landraces of South Africa assessed by morphological traits and simple sequence repeat markers
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jacob Mashilo --- Towoomba Research Station, Limpopo Department of Agriculture, South Africa Hussein Shimelis --- African Centre for Crop Improvement, South Africa Alfred Odindo --- Crop Science Discipline, South AfricaBottle gourd (Lagenaria siceraria (Molina) Standl.) is an important crop in rural communities in South Africa but it remains under-researched. The objective of this study was to assess the genetic diversity present amongst bottle gourd landraces grown by smallholder farmers... -
Sustainable tourism development and the world heritage status of the Wadden Sea: The case of Terschelling
Item type: Journal Article • Journal: • Authors: Akke Folmer --- Research Group Marine Wetlands Studies, Stenden University of Applied Sciences, Leeuwarden, The Netherlands Hans Revier --- Research Group Marine Wetlands Studies, Stenden University of Applied Sciences, Leeuwarden, The Netherlands Tamara Cupido --- Research Group Marine Wetlands Studies, Stenden University of Applied Sciences, Leeuwarden, The NetherlandsNational governments and regions make great efforts to obtain international recognition for their natural heritage, for instance through UNESCO’s World Heritage Sites list. Since June 2009, the Dutch Wadden Sea has been on the World Heritage List. Our study investigates... -
Food on the Edge: The future of food is a sustainable future
Item type: Journal Article • Journal: • Authors: Máirtín Mac Con Iomaire --- School of Culinary Arts and Food Technology, Dublin Institute of Technology, Dublin, IrelandThis article is a review of “Food on the Edge (FOTE)”, a symposium which ran in Galway, Ireland in October 2015 on the theme of “the future of food”. The aim of FOTE is to create a benchmark for best... -
Claiming Cape Town: towards a symbolic interpretation of Khoisan activism and land claims
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Rafael Verbuyst --- African Studies Centre Leiden, The NetherlandsCurrent political negotiations in South Africa which explore the possibility of pre-1913 land claims and the recognition of Khoisan traditional authorities have spurred the growth of the “Khoisan revival”: the phenomenon of people identifying as Khoisan and asserting indigenous rights... -
Variation of physico-chemical parameters along a river transect through the Okavango Delta, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Gondwe --- University of Botswana, Okavango Research Institute, Botswana WRL Masamba --- University of Botswana, Okavango Research Institute, BotswanaThe Okavango Delta depends on water quantity and quality to sustain its ecosystem services. Whereas many studies have been carried out on its hydrology, few have been done on water quality in the delta. Water pH, electrical conductivity (EC), dissolved... -
Soil carbon dioxide effluxes from different vegetation environments in semi-arid Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Rebecca Zengeni --- Soil Sciences Department, South Africa Vincent Kakembo --- Department of Geosciences, South Africa Nsalambi Nkongolo --- Centre of Excellence for Geospatial Information Science, USAThough important, CO2 effluxes from non-agricultural ecosystems are poorly characterised. Given that thicket vegetation is prevalent in Eastern Cape, South Africa, we monitored soil CO2 effluxes from an intact thicket, degraded thicket (DT) and grassland (G) over 10 months, as... -
Habitat selection of the Black-shouldered Kite Elanus caeruleus in agroecosystems of Swaziland
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Katharine A Howard --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA Thomas W Schwertner --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA James P Muir --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, SwazilandA decline in many African raptor populations may contribute to loss of ecosystem services such as pest control. The Black-shouldered Kite Elanus caeruleus stands out as an exception, experiencing range expansions due to its proclivity for agricultural landscapes. We surveyed... -
The meaning of compliance with land and labour legislation: understanding justice through farm workers’ experiences in the Eastern Cape
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Femke Brandt --- Centre for African Studies, South Africa Fani Ncapayi --- Centre for African Studies, South AfricaThis paper explores the social meanings and uses of formal labour legislation on commercial farms in the Eastern Cape. Farm workers’ and dwellers’ experiences expose ongoing land and labour struggles on South Africa’s commercial farms. We focus on the ways... -
Wetland hydrology indicators of Maluti Mountains wetlands in Lesotho
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Botle E Mapeshoane --- Department of Soil, Crop and Climate Sciences, South Africa Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South AfricaHydric soil morphological features are generally accepted to be reliable indicators of wetland hydrology. The relationship between soil water saturation and soil morphological indices is evaluated in this study from bi-weekly water level data taken over a period of two... -
Effects of land-use changes on benthic macroinvertebrate assemblages in the tropical Umfurudzi River, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Bere --- Chinhoyi University of Technology, Zimbabwe G Chiyangwa --- Chinhoyi University of Technology, Zimbabwe T Mwedzi --- Chinhoyi University of Technology, ZimbabweThe responses of benthic macroinvertebrates to land-use-induced changes in water quality and habitat because of contrasting land-use types along the Umfurudzi River, Zimbabwe, were investigated in 2013. Five stations in a communal area upstream of Umfurudzi National Park, four on... -
Mapping inundation extent, frequency and duration in the Okavango Delta from 2001 to 2012
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: K Thito --- University of Botswana, Okavango Research Institute, Botswana P Wolski --- Climate System Analysis Group, University of Cape Town, South Africa M Murray-Hudson --- University of Botswana, Okavango Research Institute, BotswanaThe frequency and duration of inundation in river systems are important for a variety of applications, such as water resource management, floodplain mapping and habitat restoration. The Okavango Delta, the fifth largest Ramsar site in the world, has experienced a... -
Long-term landscape changes in vegetation structure: fire management in the wetlands of KwaMbonambi, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LB Luvuno --- School of Life Sciences, South Africa DC Kotze --- Centre for Water Resources Research, School of Agricultural, Earth and Environmental Sciences, South Africa KP Kirkman --- School of Life Sciences, South AfricaIn wetlands the effects of fire on vegetation dynamics are somewhat uncertain. A change detection analysis in the herbaceous wetlands of KwaMbonambi, South Africa, which were subject to frequent fires, revealed that in 1937 the study area comprised grassland (69%),... -
Effect of management on rangeland phytomass, cover and condition in two biomes in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Roelof J Oomen --- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Germany Anja Linstädter --- Range Ecology and Range Management Group, Germany Jan C Ruppert --- Range Ecology and Range Management Group, Germany Katharina Brüser --- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Germany Jürgen Schellberg --- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Germany Frank Ewert --- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, GermanyIn rangelands, grazing management is a main driver of rangeland condition. Due to masking effects of seasonal climate fluctuations, little is known about (dis)similarity of management effects on rangeland condition and forage provision across major dryland biomes. Taking a macro-ecological... -
Monitoring the recovery of a previously exploited surf-zone fish community in the St Lucia Marine Reserve, South Africa, using a no-take sanctuary area as a benchmark
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute, South Africa H Winker --- South African National Biodiversity Institute, South Africa JQ Maggs --- Oceanographic Research Institute, South Africa SN Porter --- Oceanographic Research Institute, South AfricaLimiting accessibility to a fishing area can reduce fishing effort effectively and may therefore promote local recovery of depleted stocks. In January 2002, beach driving was banned in South Africa, thereby reducing angler access to large areas of the coastline,... -
Birds and biogeography of Mount Mecula in Mozambique’s Niassa National Reserve
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Claire N Spottiswoode --- Department of Zoology, UK Lincoln DC Fishpool --- BirdLife International, UK Julian L Bayliss --- Department of Zoology, UKThe montane forests of northern Mozambique’s isolated massifs are inhabited by numerous range-restricted and threatened bird species, but until recently were extremely little-known. We report on a first avifaunal survey of the isolated montane habitats of Mt Mecula (1 442... -
Grey Crowned Crane threat assessment around the wetlands of eastern Uganda
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: William Olupot --- Nature and Livelihoods, UgandaThe Grey Crowned Crane Balearica regulorum was uplisted to globally Endangered in 2012. There is urgent need to determine the threats they face at local levels for their conservation. I conducted formal point-count surveys around the wetlands of eastern Uganda... -
Physical and hydrological properties of peatland substrates from different hydrogenetic wetland types on the Maputaland Coastal Plain, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Franziska Faul --- Faculty of Earth and Environmental Sciences, Germany Marvin Gabriel --- Faculty of Life Science, Germany Niko Roßkopf --- Faculty of Life Science, Germany Jutta Zeitz --- Faculty of Life Science, Germany Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South Africa Mathilde L Pretorius --- Centre for Environmental Management, South Africa Piet-Louis Grundling --- Centre for Environmental Management, South AfricaThe Maputaland Coastal Plain in KwaZulu-Natal province is home to 60% of all peatlands occurring in South Africa. These ecosystems are increasingly threatened by unsustainable agricultural utilisation, a growing population and climate change. The aim of the study was, therefore,... -
Effect of integrated soil bunds on key soil properties and soil carbon stock in semi-arid areas of northern Ethiopia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Birhane Tadesse --- Natural Resource Management, Bureau of Agriculture and Rural Development, Ethiopia Shimbahri Mesfin --- Department of Land Resource Management and Environmental Protection, Ethiopia Girmay Tesfay --- Department of Natural Resource Economics and Management, Ethiopia Fetien Abay --- Department of Dryland Crop and Horticultural Science, EthiopiaLand degradation is a serious global problem. To reclaim degraded land, many soil bunds have been implemented. However, their effectiveness has not been studied in all regions of Ethiopia. The objective of this study was to investigate the effect of... -
Variations on soil carbon dioxide flux with land-use type and selected soil properties in the hardveld of Botswana
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Oagile Dikinya --- Department of Environmental Science, Botswana Julius Atlhopheng --- Department of Environmental Science, Botswana Trust Manyiwa --- Department of Environmental Science, BotswanaThe dynamics of carbon dioxide (CO2) flux in the hardveld regions of Botswana are poorly understood, with previous studies having concentrated on sandveld and pan environments. In particular, soil organic carbon (SOC) has a positive influence on CO2 emissions to... -
Farmer perceptions of climate change impacts on Swaziland’s sugar industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bon’sile Faith Nicollete Mhlanga-Ndlovu --- Department of Environmental Science, South Africa Godwell Nhamo --- Institute for Corporate Citizenship, University of South Africa, South AfricaThis study investigates the perceptions of sugarcane farmers on climate change impacts and their potential alternative livelihoods in the Lowveld of Swaziland with the objective of informing research and policy initiatives. The study obtained data mainly from a survey involving... -
Lived experiences of school-going early mothers in Swaziland
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kayi Ntinda --- Department of Educational Foundations and Management, Swaziland S’lungile K. Thwala --- Department of Educational Foundations and Management, Swaziland Thulile P. Dlamini --- Department of Educational Foundations and Management, SwazilandThis study explored the lived family and community experiences of Swazi school-going early mothers (N = 15; age range 13–22 years). Participants responded to family and community relationship experiences focus group discussions. The data were content thematically analysed. The findings... -
Macroinvertebrate communities associated with duckweed (Lemnaceae) in two Eastern Cape rivers, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PC Muskett --- Department of Zoology and Entomology, South Africa JM Hill --- Department of Zoology and Entomology, South Africa PSR Weyl --- Department of Zoology and Entomology, South AfricaThe functional feeding groups and diversity of macroinvertebrate communities associated with duckweed mats in the New Years River (two sites) and Bloukrans River (two sites), Eastern Cape province, South Africa, were assessed. Duckweed (Lemnaceae) is a ubiquitous family of floating... -
Exploring the invasion of rangelands by Acacia mearnsii (black wattle): biophysical characteristics and management implications
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Onalenna Gwate --- Institute for Water Research, Rhodes University, South Africa Sukhmani K Mantel --- Institute for Water Research, Rhodes University, South Africa Andiswa Finca --- Agricultural Research Council – Animal Production Institute, South Africa Lesley A Gibson --- Department of Construction and Surveying, UK Zahn Munch --- Department of Geography and Environmental Studies, South Africa Anthony R Palmer --- Institute for Water Research, Rhodes University, South AfricaAustralian acacias have spread to many parts of the world. In South Africa, species such as A. mearnsii and dealbata are invasive. Consequently, more effort has focused on their clearing. In a context of increasing clearing costs, it is crucial... -
Food on the Edge: The future of food is a sustainable future
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Máirtín Mac Con Iomaire --- School of Culinary Arts and Food Technology, IrelandThis article is a review of “Food on the Edge (FOTE)”, a symposium which ran in Galway, Ireland in October 2015 on the theme of “the future of food”. The aim of FOTE is to create a benchmark for best... -
Sustainable tourism development and the world heritage status of the Wadden Sea: The case of Terschelling
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Akke Folmer --- Research Group Marine Wetlands Studies, The Netherlands Hans Revier --- Research Group Marine Wetlands Studies, The Netherlands Tamara Cupido --- Research Group Marine Wetlands Studies, The NetherlandsNational governments and regions make great efforts to obtain international recognition for their natural heritage, for instance through UNESCO’s World Heritage Sites list. Since June 2009, the Dutch Wadden Sea has been on the World Heritage List. Our study investigates... -
Clutch, egg and hatchling characteristics in the Souss Valley tortoises, Testudo graeca soussensis Pieh, 2001 (Testudines: Testudinidae) from an arid steppe-land of west-central Morocco
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Nawal Hichami --- , , Morocco Mohammed Znari --- , , Morocco Mohamed Naimi --- , , Morocco Salwa Namous --- , , MoroccoClutch, egg and hatchling characteristics in the Souss Valley tortoises Testudo graeca soussensis (Testudinidae) from an arid steppe area of west-central Morocco were investigated in semi captivity in spring–early summer 2011. Mating activity occurs twice in the year, mainly in... -
Wide variation in carapacial scute patterns in a natural population of speckled tortoises, Homopus signatus
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Victor J.T. Loehr --- , NetherlandsThe arrangement of scutes on the carapaces of extant chelonians is very similar among species, but intraspecific deviations from typical scute patterns are common. Because intraspecific variation may relate to inbreeding depression, unfavourable egg incubation conditions and the presence of... -
Variation in body size and morphometric traits of males and females of the wall gecko, Tarentola delalandii (Phyllodactylidae) from different environments on Tenerife
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: María de Fuentes-Fernández --- , Spain María Mercedes Suárez-Rancel --- , , Spain Miguel Molina-Borja --- , SpainWe analysed sexual dimorphism in body size and several other morphological traits of two populations of Tarentola delalandii on the island of Tenerife (San Cristóbal de La Laguna in the North, and Granadilla de Abona in the South), whose habitats... -
Resources for resilient caregiving by parents of children with schizophrenia in Swaziland: A multiple case study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kayi Ntinda --- Department of Educational Foundations and Management, Swaziland Siphesihle Nkwanyana --- Department of Educational Foundations and Management, SwazilandThis study reports on the care-provisioning experiences of parents (n = 6; females = 5) raising children with schizophrenia in a rural Swazi setting. The parents were individually interviewed at their homes on caregiving aspects such as burden, coping, quality... -
Comparison of soil properties under tropical Acacia hybrid plantation and shifting cultivation land use in northern Vietnam
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Trieu Thai Hung --- Tasmanian Institute of Agriculture and School of Land and Food, Australia Richard Doyle --- Tasmanian Institute of Agriculture and School of Land and Food, Australia Alieta Eyles --- Tasmanian Institute of Agriculture and School of Land and Food, Australia Caroline Mohammed --- Tasmanian Institute of Agriculture and School of Land and Food, AustraliaDespite the common use of Acacia species in Vietnam, few studies have examined changes to total soil nitrogen (TN) and total soil carbon (TC) following the planting of Acacia mangium × Acacia auriculiformis (Acacia hybrid) plantations (AH) on formerly eroded... -
Prevalence of HIV and malaria: a cross-sectional study on Bioko Island, Equatorial Guinea
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Xiangbin Zheng --- Central Laboratory, People’s Republic of China Min Lin --- Central Laboratory, People’s Republic of China Dong-De Xie --- Laboratory Medical Center, People’s Republic of China Jian Li --- Department of Parasitology, People’s Republic of China Jiang-Tao Chen --- The Chinese medical aid team to the Republic of Equatorial Guinea, People’s Republic of China Urbano Monsuy Eyi --- Central Blood Transfusion Service, Republic of Equatorial Guinea Santiago-m Monte-Nguba --- Medical Laboratory, Republic of Equatorial Guinea Juan Carlos Sala Ehapo --- Medical Laboratory, Republic of Equatorial Guinea Hui Yang --- Central Laboratory, People’s Republic of China Hui-Tian Yang --- Central Laboratory, People’s Republic of China Li-Ye Yang --- Central Laboratory, People’s Republic of ChinaMalaria and HIV are two of the most severe public health problems in Africa. However, epidemiological data on Bioko Island is scarce. To investigate the prevalence of malaria and HIV infections and assess association of malaria and HIV infections and... -
Nitrogen leakages and vegetable dry matter yield in a subtropical wetland soil amended with cattle manure and mineral nitrogen fertiliser
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johnson Masaka --- Department of Land and Water Resources Management, Faculty of Natural Resources Management and Agriculture, Zimbabwe Eliton Chivandi --- School of Physiology, Faculty of Health Sciences, South AfricaThe response of nitrous oxide emission and nitrate leaching to increased nitrogen (N) fertiliser and cattle manure applications to wetland vegetable cropping in subtropical Africa have significant impacts on the atmospheric and terrestrial environments. Two field experiments were carried out... -
Identity experiences of black people in the Netherlands
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Renée Zonneveld --- Tilburg University, The Netherlands Susanne B. E. Brand --- Tilburg University and University of Groningen, The Netherlands Byron G. Adams --- Tilburg University, The Netherlands, and University of Johannesburg, South AfricaIn this study, we used the tri-dimensional model of identity and acculturation strategies to explore how black people living in the Netherlands define themselves. We used a qualitative survey design in which 14 participants (females = 8; age range 21... -
Overview of restoration and management practices in the degraded landscapes of the Sahelian and dryland forests and woodlands of East and southern Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Paxie W Chirwa --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, South Africa Larwanou Mahamane --- African Forest Forum, c/o World Agroforestry Centre (ICRAF), KenyaThe highest deforestation and forest degradation rates in Africa occur in the dry forests and woodlands where pressure for land is increasing, poverty is rampant, livelihood options are few and climate change effects are severe. This paper examines factors that... -
A review of carbon dynamics and assessment methods in the miombo woodlands
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ferdinand Handavu --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, South Africa Paxie W Chirwa --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, South Africa Stephen Syampungani --- Department of Environmental and Plant Sciences, Zambia Larwanou Mahamane --- African Forest Forum, c/o World Agroforestry Centre (ICRAF), KenyaProvision of accurate carbon (C) measurements and analysis are critical components in quantification of C stocks. The objectives of this review were to (1) compile and synthesise current knowledge of available methods for C stock estimation, (2) examine socio-economic drivers... -
Land use change and its drivers in Kurt Bahir wetland, north-western Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: G Shewit --- Bahir Dar University, College of Agriculture and Environmental Sciences, Ethiopia M Minwyelet --- Bahir Dar University, College of Agriculture and Environmental Sciences, Ethiopia M Tesfaye --- Bahir Dar University, College of Agriculture and Environmental Sciences, Ethiopia T Lewoye --- Bahir Dar University, College of Agriculture and Environmental Sciences, Ethiopia M Ferehiwot --- Bahir Dar University, College of Agriculture and Environmental Sciences, EthiopiaThe effects of land-use change on ecosystem services in Kurt Bahir wetland were investigated during 2013 to 2014 using LANDSAT satellite images from 1973, 1986, 2002 and 2013 to identify and map changes in land-use classes over time. To understand... -
Estimation of taper rates and volume of smaller-sized logs in spotted gum saw timber plantations in Southeast Queensland, Australia
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: TN Maraseni G Cockfield A ApanSpotted gum (Corymbia citriodora subsp. variegata) is a popular tree species for hardwood saw timber plantations in Southeast Queensland (SEQ), Australia. In many parts of the world, logs up to 10cm top diameter are considered to be merchantable logs and... -
Sand-mediated divergence between shallow reef communities on horizontal and vertical substrata in the western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SN Porter --- Oceanographic Research Institute, South Africa GM Branch --- Marine Research Institute and Department of Biological Sciences, South Africa KJ Sink --- Marine Programme, South African National Biodiversity Institute, Centre for Biodiversity Conservation, South AfricaDistinctions are rarely made between vertical and horizontal surfaces when assessing reef community composition, yet physical differences are expected because of hydrodynamic differences and sediment accumulation on flat surfaces. As sand often diminishes biotic cover, we hypothesised that vertical surfaces... -
White-backed Vulture Gyps africanus parental care and chick growth rates assessed by camera traps and morphometric measurements
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Machawe I Maphalala --- School of Life Sciences, South Africa Ara Monadjem --- Department of Biological Sciences, SwazilandPersistent vulture declines across Africa are a cause for concern as the number of species threatened with extinction increases. The White-backed Vulture Gyps africanus was, until recently, considered abundant but has been declining rapidly in recent years due to various... -
Unearthing poison use and consequent anecdotal vulture mortalities in Namibia’s commercial farmland – implications for conservation
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Andrea Santangeli --- Helsinki Laboratory of Ornithology, Finnish Museum of Natural History, Finland Volen Arkumarev --- Bulgarian Society for Protection of Birds/BirdLife Bulgaria, Bulgaria Liz Komen --- Namibia Animal Rehabilitation Research and Education Centre, Namibia Peter Bridgeford --- Vultures Namibia, Namibia Holger Kolberg --- Directorate Scientific Services, Ministry of Environment and Tourism, NamibiaAcross Africa, the illegal use of poison is triggering a continent-wide scavenger crisis, with vultures suffering the most severe negative consequences. Vultures may die as indirect victims of the conflict between livestock farmers and predators, or they may be directly... -
Longer rest periods for intensive rotational grazing limit diet quality of sheep without enhancing environmental benefits
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Warwick B Badgery --- Orange Agricultural Institute, AustraliaIntensive rotational grazing systems (also called cell grazing, holistic grazing or time-controlled grazing) are often implemented to improve production and environmental outcomes. Over recent years there has been considerable interpretation and adaption of the holistic principles that guide the management... -
Optimal grazing management strategies: evaluating key concepts
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Richard WS Fynn --- Okavango Research Institute, University of Botswana, Botswana Kevin P Kirkman --- Grassland Science, South Africa Riaan Dames --- , NamibiaRangeland management strategies must be based on robust ecological and economic concepts if they are to be effective and profitable. Thus, the aim of this paper was to examine concepts related to grazing and resting of grassland and associated effects... -
Physico-chemical water characteristics and aquatic macroinvertebrates of Lake Tsimanampesotse, south-western Madagascar
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JR Rasoloariniaina --- Centre National de Recherches sur l’Environnement (CNRE), MadagascarSaline lakes are known to be amongst the most productive ecosystems in the world. Tsimanampesotse, a ‘conservation hotspot’ soda lake in southwestern Madagascar, was integrated into the Ramsar wetland network in 1998. Despite its importance for aquatic birds, knowledge of... -
Survival and long-term growth of eucalypts on semi-arid sites in a Mediterranean climate, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ben du Toit --- Department of Forest and Wood Science, South Africa Gideon F Malherbe --- Department of Forest and Wood Science, South Africa Anton Kunneke --- Department of Forest and Wood Science, South Africa Thomas Seifert --- Department of Forest and Wood Science, South Africa C Brand Wessels --- Department of Forest and Wood Science, South AfricaFour experiments were established on the semi-arid west coast plain of South Africa during the 1990s. The trails tested the survival and growth of several eucalypt species and hybrids, some of which were established in a climate that is drier... -
The development of reforestation options for dryland farmland in south-western Australia: a review
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Richard J Harper --- School of Veterinary and Life Sciences, Australia Stanley J Sochacki --- School of Veterinary and Life Sciences, Australia John F McGrath --- School of Veterinary and Life Sciences, AustraliaCurrent forest industries in south-western Australia are based on regrowth natural eucalypt forests and Pinus and Eucalyptus spp. plantations, and restricted to areas with >600 mm y−1 annual rainfall. Dryland farming systems have been developed across 20 million ha in... -
Traces and tracks
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Paul Weinberg --- Centre for African Studies, South AfricaIn this photo essay, well-known photographer Paul Weinberg traces three decades of work on the San in Southern Africa. It is a body of work that has long grappled with the divergence between mythologised versions of the San and the... -
Variation in morphology and yield traits of Cucurbita landraces in northern KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nontuthuko R Ntuli --- Department of Botany, Faculty of Science and Agriculture, South Africa Rufaro M Madakadze --- African Crop Improvement Alliance for a Green Revolution in Africa, Kenya Alpheus M Zobolo --- Department of Botany, Faculty of Science and Agriculture, South AfricaPumpkins, represented by various Cucurbita species, are important traditional leafy vegetable crops that are widely eaten in KwaZulu-Natal, South Africa, and elsewhere. Cucurbita landraces are exceptionally variable in morphology and productivity. Although these vegetables are grown extensively in South Africa,... -
The application of camera trapping to assess Rallidae species richness within palustrine wetland habitat in South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Robin B Colyn --- Terrestrial Bird Conservation Programme, South Africa Alastair M Campbell --- Ingula Nature Reserve, South Africa Hanneline A Smit-Robinson --- Terrestrial Bird Conservation Programme, South AfricaWetlands are vital habitats for a variety of organisms and ecosystem services, but the health of these valuable habitats is declining worldwide. The Rallidae species that rely on these habitats are typically elusive, cryptic and difficult to monitor accurately, especially... -
Avian guild assemblages in forest fragments around Budongo Forest Reserve, western Uganda
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Moreen Uwimbabazi --- Department of Forest Biology and Ecosystems Management, Uganda Amy E Eycott --- Institute of Biology, Norway Fred Babweteera --- Royal Zoological Society of Scotland, UK Eric Sande --- Department of Biological Sciences, Uganda Richard J Telford --- Institute of Biology, Norway Vigdis Vandvik --- Institute of Biology, NorwayRemnant forest fragments provide an opportunity for conservation in fragmented landscapes but some patches are more useful than others. Forest fragments around Budongo Forest Reserve, an Important Bird Area in western Uganda, were surveyed to explore the effects of different... -
Deforestation since independence: a quantitative assessment of four decades of land-cover change in Malawi
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rachel A Bone --- Centre for Environmental Sciences, Faculty of Engineering and the Environment, UK Kate E Parks --- Centre for Environmental Sciences, Faculty of Engineering and the Environment, UK Malcolm D Hudson --- Centre for Environmental Sciences, Faculty of Engineering and the Environment, UK Mathews Tsirinzeni --- LEAD Southern and Eastern Africa, Chancellor College, Malawi Simon Willcock --- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, UKLand cover has changed rapidly across the tropics over the past century; however, detailed historical information describing the extent and possible drivers of such change is widely lacking. Here, we constructed a history of land-cover change at the district level... -
Constrained relationship agency as the risk factor for intimate partner violence in different models of transactional sex
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Rebecca Fielding-Miller --- Department of Medicine, USA Kristin Dunkle --- South African Medical Research Council, South AfricaWomen who engage in transactional sex are more likely to experience intimate partner violence (IPV) and are at higher risk of HIV. However, women engage in transactional sex for a variety of reasons and the precise mechanism linking transactional sex... -
“I will take ARVs once my body deteriorates”: an analysis of Swazi men’s perceptions and acceptability of Test and Start
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Alfred K Adams --- Amsterdam Institute of Social Science Research, the Netherlands Agostino M Zamberia --- Department of Sociology and Social Work, SwazilandSwaziland has the highest HIV prevalence in the world. To mitigate the spread and devastation caused by HIV and to improve the wellbeing of people living with HIV, the country has adopted the latest available HIV prevention campaigns, including “Test... -
Evaluating oat cultivars for dairy forage production in the central Kenyan highlands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Solomon W Mwendia --- Centro Internacional de Agricultura Tropical, Tropical Forages, Kenya Brigitte L Maass --- Centro Internacional de Agricultura Tropical, Tropical Forages, Kenya David G Njenga --- International Fertilizer Development Center, Kenya Fridah N Nyakundi --- Centro Internacional de Agricultura Tropical, Biometrics, Kenya An Maria O Notenbaert --- Centro Internacional de Agricultura Tropical, Tropical Forages, KenyaWith the projected increase in future demand for animal products, efforts to raise animal productivity are necessary to match the rise. Already, the estimated per-capita milk consumption in Kenya has increased to 150 L from 100 L estimated in 1998... -
Discursive hauntings: limits to reinvention for Zimbabwean farm workers after fast-track land reform
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Andrew Hartnack --- Sustainable Livelihoods Foundation, South AfricaScholars of Zimbabwe’s agrarian milieu since the “fast-track land-reform” in 2000 are increasingly suggesting that the label “farm worker” is no longer a relevant or accurate term for referring to former workers now living in resettlement areas. While many former... -
Nightjar diversity and microhabitat use in Nechisar National Park, Ethiopia
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ruben Evens --- Research Group Zoology: Biodiversity and Toxicology, Belgium Natalie Beenaerts --- Research Group: Environmental Biology, Belgium Nele Witters --- Research Group: Environmental Economics, Belgium Tom Artois --- Research Group Zoology: Biodiversity and Toxicology, BelgiumKnowledge of the distribution and ecology of East African nightjars is, to a large extent, unknown. We collected ecological information on the diversity and microhabitat use of nightjars in Nechisar National Park in January 2015 by executing field captures and... -
Use of diatom indices to categorise impacts on and recovery of a floodplain system in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Musa --- Department of Zoology, South Africa R Greenfield --- Department of Zoology, South AfricaThe trophic status of the Ramsar-accredited Nyl River floodplain, which is stressed by sewage treatment effluents, and its ability to restore normal conditions, were assessed in 2014–2015 using diatoms as biological indicators. The Trophic Diatom Index, Specific Pollution Sensitivity Index... -
Peatland substrates in northern KwaZulu-Natal: a study of the forming environments, properties and an approach towards classification
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvin Gabriel --- Faculty of Life Science, Germany Camelia Toader --- Faculty of Mathematics and Natural Sciences, Germany Franziska Faul --- Faculty of Earth and Environmental Sciences, Germany Niko Roßkopf --- Faculty of Life Science, Germany Piet-Louis Grundling --- Centre for Environmental Management, South Africa Cornelius Wilhelm van Huyssteen --- Department of Soil, Crop, and Climate Sciences, South Africa Jutta Zeitz --- Faculty of Life Science, GermanyPeatlands in South Africa are rare and fulfil important ecological functions but are threatened by degradation. Because of this peatlands have gained increasing attention from scientists during the last two decades. However, knowledge of the peatland substrates and the means... -
A productivity model for first thinning of Pinus patula using a tractor and double-drum winch in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Thabo Moloi --- Forest Postgraduate Programme, South Africa Michal Brink --- Forest Postgraduate Programme, South Africa Paxie W Chirwa --- Forest Postgraduate Programme, South Africa Elisha Ngulube --- Department of Forestry, MalawiThe productivity of skidding tractors in intermediate harvesting operations has not been determined in Mpumalanga, South Africa. The objective of this study was to develop a productivity model using a farm tractor in first thinning operations in Pinus patula compartments... -
Diurnal activity patterns of Harwood’s Spurfowl Pternistis harwoodi in relation to habitat types and climatic conditions in the Central Highlands of Ethiopia
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abadi Mehari Abrha --- Department of Animal, Rangeland and Wildlife Sciences, Ethiopia Shimelis Aynalem Zelelew --- Department of Fisheries, Ethiopia Habtu Kiros Nigus --- Department of Statistics, Ethiopia Aschalew Alelign --- Department of Animal, Rangeland and Wildlife Sciences, EthiopiaHarwood’s Spurfowl Pternistis harwoodi is an endemic bird of Ethiopia. Globally, it is categorised as Vulnerable. Habitat loss and hunting are the major conservation threats to the species. This study investigated the activity patterns of Harwood’s Spurfowl in relation to... -
The effect of Holistic Planned Grazing™ on African rangelands: a case study from Zimbabwe
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mike Peel --- Agricultural Research Council–Animal Production Unit, South Africa Marc Stalmans --- International Conservation Services, South AfricaHolistic Planned Grazing™ (HPG) is purported to have positive long-term effects on rangelands, enhancing ecosystem services. Given comparable environmental templates, but different management regimes, vegetation monitoring and landscape function analysis showed the Africa Center for Holistic Management (ACHM) at Dimbangombe... -
Land-use and land-cover changes and their drivers in rangeland-dependent pastoral communities in the southern Afar Region of Ethiopia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Muluken Mekuyie --- Disaster Management Training and Education Center for Africa, South Africa Andries Jordaan --- Disaster Management Training and Education Center for Africa, South Africa Yoseph Melka --- Wondo Genet College of Forestry and Natural Resource, EthiopiaThe present study was conducted in the southern Afar Region in Ethiopia to analyse the trends of land-use and land-cover changes and their drivers in the period 1985 to 2015 using remote sensing, field observation, focus group discussions and semi-structured... -
Temperature control of the distributional range of five C3 grass species in the uKhahlamba-Drakensberg Park, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Luke K Bentley --- South African Environmental Observation Network, South Africa Tim G O’Connor --- South African Environmental Observation Network, South AfricaGlobal climate change is expected to influence the distribution of global biodiversity. C4 and C3 perennial grasses co-occur in the fire-prone KwaZulu-Natal uKhahlamba-Drakensberg grasslands, with C3 grass species occurring at cooler locations in the mountain range and C4 grass species... -
Assessing the impacts of domesticated versus wild ungulates on terrestrial small mammal assemblages at Telperion Nature Reserve, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Bonginkosi C Gumbi --- Department of Biological Sciences, Swaziland Julie T Shapiro --- Department of Wildlife Ecology and Conservation, School of Natural Resources and the Environment, USA Themba Mahlaba --- Department of Biological Sciences, Swaziland Robert McCleery --- Department of Wildlife Ecology and Conservation, School of Natural Resources and the Environment, USA Duncan MacFadyen --- Department of Research and Conservation, E Oppenheimer and Sons, Marshalltown, South Africa Ara Monadjem --- Department of Biological Sciences, SwazilandGrazing by large mammals alters vegetation physiognomy, consequently changing habitat suitability for small mammal communities. We investigated the response of terrestrial small mammals to grazing by wild and domesticated ungulates at the boundary of a protected area (Telperion Nature Reserve)... -
Effect of proximity to highways on soil chemical properties and grass condition at Mafikeng, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Chris Munyati --- Department of Geography and Environmental Science, South Africa Oratile Menwe --- Department of Geography and Environmental Science, South AfricaRoads have motor vehicle traffic-sourced ecological effects. This study examined the effect of proximity to roads on soil and grass. Surface soil samples were collected along 60 m transects perpendicular to the four major paved highways of Mafikeng, in two... -
Through the lens of a herder: insights into landscape ethno-ecological knowledge on rangelands in Namaqualand
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Mogamat Igshaan Samuels --- Agricultural Research Council, South Africa Melvin Swarts --- Agricultural Research Council, South Africa Amy Schroeder --- Department of Biodiversity and Conservation Biology, South Africa Khululiwe Ntombela --- Agricultural Research Council, South Africa Clement Cupido --- Agricultural Research Council, South AfricaPastoral areas around the world, including South Africa, are resource poor and external development interventions to improve conditions have largely been unsuccessful. It has been advocated that the focus should shift from external stakeholders to local pastoralists by incorporating the... -
Impacts of alien ‘ecosystem engineers’ overwhelm interannual and seasonal shifts in rocky-shore community composition on Marcus Island, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Sadchatheeswaran --- Department of Biological Sciences and Marine Research Institute, South Africa GM Branch --- Department of Biological Sciences and Marine Research Institute, South Africa CL Moloney --- Department of Biological Sciences and Marine Research Institute, South Africa TB Robinson --- Department of Botany and Zoology, South AfricaThe South African coastline has been invaded by numerous alien species. Rare pre-invasion (1980) and post-invasion datasets (2001 and 2012) exist for Marcus Island, a small land-tied island in Saldanha Bay, South Africa. These snapshot datasets of the island’s intertidal... -
Rotation-end financial performance of vegetation control on Eucalyptus smithii in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Keith M Little --- School of Natural Resource Management, South Africa Anssi Ahtikoski --- Natural Resources Institute Finland, Finland Andrew R Morris --- Institute for Commercial Forestry Research, South AfricaControl of competing vegetation during eucalypt regeneration is important but the cost-benefit of varying levels of control is not well understood. A trial was initiated to quantify the impact of five vegetation control treatments on Eucalyptus smithii R.T.Baker. to determine... -
Evaluation of satellite retrievals of water quality parameters for Lake Victoria in East Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Gidudu --- Department of Geomatics and Land Management, Uganda R Mugo --- Regional Centre for Mapping Resource for Development, Nairobi Kenya L Letaru --- Department of Geomatics and Land Management, Uganda J Wanjohi --- Regional Centre for Mapping Resource for Development, Nairobi Kenya R Nakibule --- Department of Geomatics and Land Management, Uganda E Adams --- Earth System Science Centre–University of Alabama in Huntsville, USA A Flores --- Earth System Science Centre–University of Alabama in Huntsville, USA B Page --- Earth System Science Centre–University of Alabama in Huntsville, USA W Okello --- National Fisheries Resources Research Institute, UgandaLake Victoria in East Africa is a major ecosystem, whose size and importance has warranted the exploration of MODIS imagery to provide continuous and accurate water quality information. To this effect, two sea expeditions (in November 2014 and February 2015)... -
Seasonal changes in pasture biomass and grazing behaviour of cattle in the Guinea Savanna agroecological zone of Ghana
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Maxwell Akapali --- Department of Animal Science, Ghana Terry Ansah --- Department of Animal Science, Ghana Ibn Iddriss Abdul-Rahman --- Department of Animal Science, Ghana Benjamin Alenyorege --- Department of Animal Science, Ghana Bernard N Baatuuwie --- Department of Forestry and Forest Resources Management, GhanaSpatial and temporal availability of pasture vegetation and cattle grazing behaviour in three seasons (intermediate season [IM], peak season [PS] and dry season [DS]) in the Guinea Savanna agroecological zone of Ghana was examined. The frequency of occurrence of three... -
Coral reefs of the Glorieuses Islands, western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MH Schleyer --- Oceanographic Research Institute (ORI), South Africa L Bigot --- Laboratoire d’ Écologie Marine Tropicale dans les Océans Pacifique et Indien (ENTROPIE), France Y Benayahu --- School of Zoology, George S. Wise Faculty of Life Sciences, IsraelThe benthic fauna on reefs around the Glorieuses Islands, a small and protected Indian Ocean archipelago northwest of Madagascar, was surveyed in November 2015, focusing particularly on the orders Alcyonacea (soft corals and gorgonians) and Scleractinia (stony corals). The species... -
Feasibility economic analysis for electricity generation in internal combustion engine sets using landfill gas in Lagos State
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: A. O. Adepoju --- Project Management Department, Nigeria Y. O. Akinwale --- Department of Economics, Saudi Arabia I. O. Ogundari --- African Institute for Science Policy and Innovation, Obafemi Awolowo University, NigeriaThe main objective of this paper is to analyze the economic feasibility landfill gas for electricity generation in Lagos State. In this paper, methane emissions are estimated by applying the First Order Decay model to landfills in Lagos over the... -
Mapping tree aboveground biomass and carbon in Omo Forest Reserve Nigeria using Landsat 8 OLI data
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Iveren B Chenge --- Department of Forest Resources Management, Nigeria Johnson SA Osho --- Department of Forest Resources Management, NigeriaProtected areas in Nigeria are important ecosystems for carbon storage. The aim of this study was to estimate and map tree aboveground biomass (TAGB) and carbon (TAGC) within a tropical forest in Nigeria. Stepwise regression analysis was implemented to develop... -
Communities’ perceptions of benefit-sharing mechanisms for forest-based land reform models in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ratsodo Phillip Tshidzumba --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, South Africa Paxie W Chirwa --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, South Africa Folaranmi D Babalola --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, South AfricaOne of the dominant challenges facing the South African forestry sector is the issue of land restitution. The aim of this study was, therefore, to assess the perception of beneficiaries of benefit-sharing modalities for forest-based land reform initiatives in their... -
Design of an engineered landfill as possible replacement for an existing dump at Akure, Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: O.O. Ojuri --- Department of Civil and Environmental Engineering, Nigeria T.O. Ajijola --- Department of Civil and Environmental Engineering, Nigeria I. I. Akinwumi --- Department of Civil Engineering, NigeriaThis work focuses on the design of an engineered (semi-aerobic) landfill in Akure with a view to encourage a shift from the use of a dumpsite, which despite its adverse environmental impact has remained the method of waste disposal in... -
Interactions of grazing and rainfall on vegetation at Grootfontein in the eastern Karoo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Justin CO du Toit --- Pasture Research, Grootfontein Agricultural Development Institute, South Africa Tshililo Ramaswiela --- South African Environmental Observation Network, South Africa Marco J Pauw --- South African Environmental Observation Network, South Africa Tim G O’Connor --- South African Environmental Observation Network, South AfricaRainfall and grazing are primary drivers of vegetation composition in the Nama-Karoo. Increased rainfall increases grassiness, to where Nama-Karoo transitions to grassland. Severe grazing treatments (e.g. continuous or summer-only) increase abundance of grazing-tolerant dwarf shrubs and annual grasses, and decrease... -
Reflections, applications and future directions of Long-Term Ecological Research at Tierberg
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Gina Arena --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa Helga van der Merwe --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa Simon W Todd --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa Marco J Pauw --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa Suzanne J Milton --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa W Richard J Dean --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa Joh R Henschel --- South African Environmental Observation Network (SAEON): Arid Lands Node, South AfricaTierberg-LTER is a research site established in 1987 in the semi-arid Succulent Karoo near Prince Albert in the Western Cape province, South Africa. The original purpose for its establishment was to study ecosystem dynamics and the drivers of vegetation in... -
Long-term changes in land use, land cover and vegetation in the Karoo drylands of South Africa: implications for degradation monitoring
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M Timm Hoffman --- Department of Biological Sciences, South Africa Andrew Skowno --- South African National Biodiversity Institute, South Africa Wesley Bell --- Department of Biological Sciences, South Africa Samukele Mashele --- Department of Biological Sciences, South AfricaWe used several large data sets at a range of temporal and spatial scales to document the land-use/land-cover change (LULCC) dynamics of the semi-arid Succulent Karoo and Nama-Karoo biomes of South Africa. More than 95% of the Karoo is comprised... -
Long-term impacts of livestock grazing and browsing in the Succulent Karoo: a 20-year study of vegetation change under different grazing regimes in Namaqualand
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Elelwani Nenzhelele --- Department of Biological Sciences, South Africa Simon W Todd --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South AfricaThis study used a fence-line contrast approach to investigate the long-term impact of high grazing pressure on the vegetation at a site in Namaqualand, South Africa. Forty pairs of permanently marked plots were surveyed in 1996, 2006 and 2016. The... -
Spatial, temporal and attitudinal dimensions of conflict between predators and small-livestock farmers in the Central Karoo
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Marine Drouilly --- Institute for Communities and Wildlife in Africa, Department of Biological Sciences, South Africa Marion Tafani --- Institute for Communities and Wildlife in Africa, Department of Biological Sciences, South Africa Nicoli Nattrass --- Institute for Communities and Wildlife in Africa, Department of Biological Sciences, South Africa Justin O’Riain --- Institute for Communities and Wildlife in Africa, Department of Biological Sciences, South AfricaConflict between predators and small-livestock farmers is a global phenomenon adversely impacting the preservation of wildlife, the well-being of livestock and human livelihoods. Such conflict is pervasive in the Karoo region of South Africa but its contemporary history and various... -
The composition of the soil seedbank and its role in ecosystem dynamics and rehabilitation potential in the arid Tankwa Karoo Region, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Manam WB Saaed --- Higher Institute of Agricultural Techniques, Libya Shayne M Jacobs --- Department of Conservation Ecology and Entomology, South Africa Mmoto L Masubelele --- Cape Research Centre, South Africa Igshaan Samuels --- Agricultural Research Council–Animal Production, c/o Department of Biodiversity and Conservation Biology, South Africa Lesego Khomo --- Department of Environmental Sciences, South Africa Yacoub M El-Barasi --- Botany Department, Faculty of Science, LibyaVery few soil seedbank studies have been conducted in South Africa, especially in arid rangelands. Insight into the soil seedbank could therefore improve assessment of rangeland dynamics and enhance rehabilitation efforts. This study aimed to characterise the soil seedbanks in... -
Vegetation responses to seasonal weather conditions and decreasing grazing pressure in the arid Succulent Karoo of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Ute Schmiedel --- Institute for Plant Science and Microbiology, Germany Jens Oldeland --- Institute for Plant Science and Microbiology, GermanyThe Succulent Karoo biome is a renowned centre of biodiversity and endemism in the arid winter rainfall region of South Africa that is threatened by climate change. On 20 permanently marked plots within a biodiversity observatory, species richness and cover... -
Before the Anthropocene: human pasts in Karoo landscapes
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: David Morris --- McGregor Museum, South AfricaKaroo landscapes today are replete with evidence of recent human impacts. The Karoo is relatively pristine in the South African imaginary, but it is not untouched. Social and historic change in the last 300 years has been dramatic. The article... -
Reflections on the Karoo Special Issue: towards an interdisciplinary research agenda for South Africa’s drylands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa Cherryl Walker --- Department of Sociology and Social Anthropology, South Africa Joh R Henschel --- South African Environmental Observation Network (SAEON): Arid Lands Node, South AfricaWe begin this essay with reflections on major research themes highlighted by the Karoo Special Issue (KSI). These include concerns over land-use change, long-term monitoring, climate change, governance and the need for more interdisciplinary research. We also identify some of... -
The development of soft skills during internships: The hospitality student’s voice
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Erwin Losekoot --- NHL Stenden University of Applied Sciences, The Netherlands Earney Lasten --- RMIT University, Vietnam Anne Lawson --- Auckland Institute of Studies, New Zealand Beverly Chen --- Auckland Institute of Studies, New ZealandThis paper considers the value of industrial placements in providing an opportunity for hospitality students to develop soft skills in the workplace in addition to the technical skills learned at their educational establishments. While there are concepts such as “problem-based... -
Minimum population size and potential impact of feral and semi-feral donkeys and horses in an arid rangeland
Item type: Journal Article • Journal: African Zoology • Authors: Halcyone Muller --- Conservation South Africa, South Africa Amanda Bourne --- Department of Biological Sciences, South AfricaFarmers in the northern, communally managed parts of the Succulent Karoo, an arid rangeland system in South Africa, historically used donkeys and horses for transport and ploughing. With increasing mechanisation, draught animal power has largely been replaced by machines. Yet,... -
The breeding ecology of Mallard Anas platyrhynchos at Lake Tonga, north-eastern Algeria
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Aicha Fouzari --- Laboratoire de Conservation des Zones Humides, Algeria Farrah Samraoui --- Laboratoire de Conservation des Zones Humides, Algeria Boudjéma Samraoui --- Laboratoire de Conservation des Zones Humides, AlgeriaThe breeding ecology of Mallard Anas platyrhynchos was investigated at Lake Tonga, north-eastern Algeria, which is at the southern edge of the species’ range in the Western Palearctic. Breeding was mainly carried out in stumps of alder carr (Alnus glutinosa)... -
Trait variations in 28-year-old teak (Tectona grandis) provenance field trials in Ghana, West Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Stephen Adu-Bredu --- CSIR-Forestry Research Institute of Ghana, Ghana Daniel A Ofori --- CSIR-Forestry Research Institute of Ghana, Ghana Anders Ræbild --- Department of Geosciences and Natural Resource Management, Faculty of Science, Denmark Jon K Hansen --- Department of Geosciences and Natural Resource Management, Faculty of Science, Denmark Appolinaire Koffi --- Société de Développement defs Forêts (SODEFOR), Côte d’Ivoire Philipp Vigneron --- CIRAD, Forest Department, Research Unit 39, Diversity and Breeding of Forest Tree Species, France Erik D Kjær --- Department of Geosciences and Natural Resource Management, Faculty of Science, DenmarkStem straightness, axis persistence, presence/absence of protuberant buds and epicormics, diameter and height have profound influence on timber quality and volume of teak (Tectona grandis). Provenance trials of teak were established in the 1970s in Ghana, as part of the... -
Roosting requirements of Helmeted Guineafowl Numida meleagris on Highveld grain and livestock farms with alien tree groves, Gauteng province, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Johann H van Niekerk --- Department of Environmental Sciences, College of Agriculture and Environmental Sciences, South AfricaThis study describes the relationship between Helmeted Guineafowl Numida meleagris and invasive alien trees on livestock and maize farms south-east of Johannesburg, Gauteng province, South Africa. The dependence of the birds on alien trees affects strategies for the removal of... -
Estimating evapotranspiration in semi-arid rangelands: connecting reference to actual evapotranspiration and the role of soil evaporation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Onalenna Gwate --- Institute for Water Research, Rhodes University, South Africa Sukhmani K Mantel --- Institute for Water Research, Rhodes University, South Africa Andiswa Finca --- Agricultural Research Council–Animal Production Institute, South Africa Lesley A Gibson --- School of Engineering, UK Zahn Munch --- Department of Geography and Environmental Studies, South Africa Anthony R Palmer --- Institute for Water Research, Rhodes University, South AfricaIn a context of water scarcity, efforts to increase landscape production should focus on improving water productivity. This requires an appreciation of the various components of evapotranspiration (ET), including soil evaporation (Es) because the latter reflects ‘unproductive’ water loss. Both... -
“I don’t want them to know”: how stigma creates dilemmas for engagement with Treat-all HIV care for people living with HIV in Eswatini
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Shona Horter --- London School of Hygiene and Tropical Medicine, UK Sarah Bernays --- Sydney School of Public Health, Australia Zanele Thabede --- Médecins sans Frontières/Doctors Without Borders, Eswatini Velibanti Dlamini --- Médecins sans Frontières/Doctors Without Borders, Eswatini Bernhard Kerschberger --- Médecins sans Frontières/Doctors Without Borders, Eswatini Munyaradzi Pasipamire --- Swaziland National AIDS Programme, Eswatini Barbara Rusch --- Médecins sans Frontières/Doctors without Borders, Switzerland Alison Wringe --- London School of Hygiene and Tropical Medicine, UK“Treat-all” programmes aim to improve clinical outcomes and to reduce HIV transmission through regular HIV testing and immediate offer of antiretroviral therapy (ART) for those diagnosed HIV-positive, irrespective of immunological status and symptoms of disease. Global narratives on the benefits... -
Use of Landsat multi-temporal imagery to assess secondary growth Miombo woodlands in Luanshya, Zambia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Reuben Lungu Lembani --- School of Geography, Archaeology and Environmental Studies, South Africa Jasper Knight --- School of Geography, Archaeology and Environmental Studies, South Africa Elhadi Adam --- School of Geography, Archaeology and Environmental Studies, South AfricaMiombo woodlands are the most extensive natural forest type in subtropical Africa, supporting the livelihood of over 100 million urban and rural settlers. These forests continue to experience extensive deforestation and land degradation due to land use land cover (LULC)... -
Land-use impacts on the composition and diversity of the Baikiaea– Guibourtia–Pterocarpus woodlands of north-western Zimbabwe
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Angella Chichinye --- Department of Forest Resources and Wildlife Management, Zimbabwe Coert J Geldenhuys --- Department of Plant and Soil Sciences, South Africa Paxie W Chirwa --- Department of Plant and Soil Sciences, South AfricaVariation in floristic composition of recovering Baikiaea–Guibourtia–Pterocarpus woodlands was studied in different development stages (from early regrowth to mature woodland) under different land-use systems (protected areas, timber harvesting, pole and firewood collection, and abandoned crop fields), in the Gwayi and... -
The impacts of season and livestock management strategy on the quality of diets selected by goats and sheep in the semi-arid rangelands of Namaqualand, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Francuois L Müller --- Agricultural Research Council–Animal Production, South Africa M Igshaan Samuels --- Department of Biodiversity and Conservation Biology, South Africa Clement F Cupido --- Agricultural Research Council–Animal Production, South Africa Melvin BV Swarts --- Agricultural Research Council–Animal Production, South Africa Nefza M Amary --- Department of Biodiversity and Conservation Biology, South Africa Dawood Hattas --- Department of Biological Sciences, South Africa Craig Morris --- Agricultural Research Council–Animal Production, South Africa Lilburne F Cyster --- Department of Biodiversity and Conservation Biology, South Africa J Stephen Boatwright --- Department of Biodiversity and Conservation Biology, South AfricaAccess to good-quality forages is one of the major limitations to livestock production in semi-arid pastoral systems. This study aimed to determine whether there are differences in the nutritional quality of diets selected by herded and free-ranging goat and sheep... -
Inselbergs persist as islands of diversity in a heavily grazed rangeland mosaic at the nexus of three arid biomes
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Laetitia C Piers --- Department of Biodiversity and Conservation Biology, South Africa M Igshaan Samuels --- Department of Biodiversity and Conservation Biology, South Africa Mmoto L Masubelele --- Cape Research Centre, South African National Parks, South Africa Lesego Khomo --- Environmental Sciences Department, South AfricaInselbergs are regarded as ‘islands of diversity’ due to the high number of plant species present and level of endemism. They also act as natural sources of fodder for livestock and thus risk becoming homogenised in a heavily grazed rangeland... -
Efforts to improve Zimbabwe communal grazing areas: a review
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Bruce Tavirimirwa --- Department of Research and Specialist Services, Zimbabwe Emmanuel Manzungu --- Department of Soil Science and Engineering, Zimbabwe Soul Washaya --- Department of Animal Science, Zimbabwe Sharai Ncube --- Department of Animal Science, Zimbabwe Shadreck Ncube --- Department of Research and Specialist Services, Zimbabwe Clarice Mudzengi --- Department of Research and Specialist Services, Zimbabwe Richard Mwembe --- Department of Research and Specialist Services, ZimbabweThe management of rangelands over the past decade in Zimbabwe has been on the decline. This has resulted in degraded and depleted communal rangelands. A number of recommendations by various government departments, researchers and non-governmental organisations have been implemented. These... -
Effects of Tillage System and Weed Control Method on Weed Infestation and Yield of Lowland Rice (Oryza sativa L.)
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Eli Kuchi Jiya --- Department of Crop Production, Nigeria Emmanuel Daniya --- Department of Crop Production, Nigeria Musa Gimba Matthew Kolo --- Department of Crop Production, NigeriaA two–year experiment was carried out to determine the effects of tillage (heap and level, hoe plough and herbicide-based zero tillage) and weed control methods (no weeding, hoe weeding at 25 days after transplanting (DAT), hoe weeding at 25 and... -
Environmental benefits of corn cob ash in lateritic soil cement stabilization for road works
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olanrewaju A. Apampa --- Department of Civil Engineering, NigeriaThe potential environmental benefits of corn cob ash (CCA) as pozzolan in stabilizing soils for road construction was investigated. Corn cob obtained from Maya in South West Nigeria was processed to ash similar to Class C Fly Ash and blended... -
Impact of land use on woody aboveground biomass in Miombo woodlands of western Zambia – comparison of three allometric equations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Priscilla Sichone --- Institute for Plant Science and Microbiology, University of Hamburg, Germany Ute Schmiedel --- Institute for Plant Science and Microbiology, University of Hamburg, Germany Jens Oldeland --- Institute for Plant Science and Microbiology, University of Hamburg, Germany Norbert Jürgens --- Institute for Plant Science and Microbiology, University of Hamburg, GermanyGlobally, the intensification of land use for agriculture, timber and fuel is considered the leading threat to the diversity and biomass of forests and woodlands. To suggest management options, it is important to understand the patterns and drivers of diversity,... -
Comparison of socio-economic and ecological benefits of bamboo and trees: the perspectives of local communities in south-western Ghana
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Richard Osei --- Earth and Life Institute, Belgium Michael Ansong --- Department of Silviculture and Forest Management, Ghana Stefan Zerbe --- Faculty of Science and Technology, ItalyNatural forests are disappearing in many tropical countries, resulting in loss of biodiversity and erosion of forest-dependent livelihoods. The maintenance and restoration of forests as well as a search for alternative natural resources that can concurrently improve the environment and... -
Lack of phylogeographic structure in the endangered Pickersgill’s Reed Frog; Hyperolius pickersgilli (Raw, 1982)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Antoinette Kotze --- , South Africa Taryn M.C. Ralph --- , , South Africa Lisa N. Barrow --- , , USA Jeanne Tarrant --- , South Africa Louis du Preez --- , , South Africa M. Thabang Madisha --- , South Africa Desire L Dalton --- , South AfricaThe Endangered Pickersgill’s Reed Frog (Hyperolius pickersgilli) is endemic to South Africa and restricted to the KwaZulu-Natal (KZN) coast. The natural habitat of H. pickersgilli is limited to fragmented patches of coastal reed-bed wetland, the majority of which continues to... -
What is the future of foreign food experiences?
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Erwin Losekoot --- Stenden Hotel Management School, The Netherlands John Hornby --- Stenden Hotel Management School, The NetherlandsThis article considers the impact foreign food experiences can have on an individual. Food can be transported across the globe and be a catalyst for understanding and integration, but it can also be used to emphasise the “otherness” that sets... -
The symbolic understanding of milk in Swiss gastronomy
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Perrine Leroy --- Ecole Hoteliere de Lausanne, Switzerland Peter Varga --- Ecole Hoteliere de Lausanne, SwitzerlandIn the 21st century, in a context where milk and dairy products are at the centre of many debates, this article wonders how doubts about these products are perceived in a gastronomic context where they are particularly appreciated and used... -
Effect of degree and duration of water saturation on iron, manganese and exchangeable cations in wetland soils of Maputaland, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Brenton Mabuza --- Soil, Crop and Climate Sciences, South Africa Cornelius W van Huyssteen --- Soil, Crop and Climate Sciences, South AfricaSoils of the Maputaland Coastal Plain are naturally grey, do not contain any redoximorphic features, and are therefore problematic to interpret during wetland delineation. This study was consequently initiated to determine if these soils were able to reduce in a... -
Vegetation dynamics in the face of a major land-use change: a 30-year case study from semi-arid South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Olli Hyvärinen --- FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa Chevonne Reynolds --- FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, South AfricaAlthough wildlife production is widely considered beneficial for semi-arid environments, few studies have reported on the long-term environmental effects of converting from livestock production to game ranching. Asante Sana Game Reserve in South Africa was stocked with domestic livestock for... -
Land tenure system innovation and agricultural technology adoption in Burkina Faso: Comparing empirical evidence to the worsening situation of both rural people vulnerability and vulnerable groups’ access to land
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Windinkonté Séogo --- Centre Universitaire Polytechnique de Kaya, Universite Joseph Ki-Zerbo, Burkina Faso Pam Zahonogo --- Economics Department, Burkina FasoThe crucial need for land ownership security to structurally transform the agricultural sector motivated Burkina Faso authorities to run a land reform programme in 2009, allowing producers to acquire formal land property rights. Our study aims to highlight how this... -
New land, old claims and the politics of belonging during a changing agrarian situation in central Zimbabwe
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Grasian Mkodzongi --- Tropical Africa Land and Natural Resources Research Institute, ZimbabweThis article examines the way discourses of autochthony and belonging were deployed by various groups of people to make claims over land during the implementation of Zimbabwe’s Fast Track Land Reform Programme (FTLRP) in 2000. Although the FTLRP was not... -
Livelihoods fragility and land tenure in the post-fast track land reform era in Upper Guruve, Zimbabwe
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Hardlife S. Basure --- Sociology and Social Anthropology, Zimbabwe Josiah Taru --- Sociology and Social Anthropology, Zimbabwe Gumisai T. Mutangi --- Sociology and Social Anthropology, ZimbabweThis paper seeks to document the experiences of and challenges experienced by farmers resettled according to the communal/villagised model of resettlement in Upper Guruve district in Zimbabwe. The paper is based on long-term ethnographic fieldwork conducted from 2009 to 2017... -
“Reproducing the social”: contradictory interconnections between land, cattle production and household relations in the Besters Land Reform Project, South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Donna Hornby --- Institute for Poverty, Land and Agrarian Studies, South Africa Ben Cousins --- Institute for Poverty, Land and Agrarian Studies, South AfricaLand redistribution policy in South Africa emphasises commercial farming as the legitimate use of land. This production-oriented framework fails to take into account the intertwined but unstable relationship between the production of market value and social reproduction, and how this... -
Singabantu bendawo: understanding the concept of land from the perspective of ubuntu
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Nompumelelo Zodwa Radebe --- Anthropology and Archaeology, South AfricaThe 54th national conference of the African National Congress, the ruling party in South Africa, resolved amongst other things to review the country’s constitution such that it enables the government to implement land expropriation without compensation. This resolution has faced... -
Centring ordinary people: grounded approaches to land reform in Southern Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Maano Ramutsindela --- Environmental and Geographical Science, South Africa Andrew Hartnack --- Independent researcher and evaluation specialist, South AfricaThis introduction to the timely special issue of Anthropology Southern Africa examines land reform in the region, offering ethnographic perspectives on a subject often dominated by economists, lawyers and journalists. It points to the need for grounded approaches that go... -
The ancestral land debate prior to and during Namibia’s Second National Land Conference: the redistribution-recognition dilemma
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Phanuel Kaapama --- Political and Administrative Studies, NamibiaWith the 2007 adoption of the United Nations Declaration on the Rights of Indigenous People, the notion of ancestral land rights has gained greater global currency. However, this international legal instrument falls short of proffering an unambiguous definition of an... -
Are we poles apart? Stakeholders’ cooperation and decision-making in on-land cruise tourism in Iceland and New Zealand
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Tracy Harkison --- Auckland University of Technology, New Zealand Þórný Barðadóttir --- Icelandic Tourism Research Centre, IcelandThe rapid growth of the global cruise ship industry in tourism has been evident in New Zealand in the southern hemisphere and Iceland in the northern hemisphere, where both countries have experienced a substantial increase in cruise ship arrivals at... -
Mapping distribution of water hyacinth (Eichhornia crassipes) in Rwanda using multispectral remote sensing imagery
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JA Mukarugwiro --- School of Animal, Plant and Environmental Sciences (APES), South Africa SW Newete --- School of Animal, Plant and Environmental Sciences (APES), South Africa E Adam --- School of Geography, Archaeology and Environmental Studies (GAES), South Africa F Nsanganwimana --- African Center of Excellence for Innovative Teaching & Learning Mathematics & Science, Rwanda KA Abutaleb --- Institute for Soil, Climate and Water, South Africa MJ Byrne --- School of Animal, Plant and Environmental Sciences (APES), South AfricaWater hyacinth, Eichhornia crassipes (C. Mart) Solms (Pontederiaceae), is an invasive aquatic macrophyte with major negative economic and ecological impacts in Rwanda and other East African countries since its establishment in the region in the 1960s. Reliable estimates of water... -
A tale of records from Hakskeen Pan, the first record of Pumilibranchipus deserti Hamer and Brendonck, 1995 (Anostraca, Branchiopoda) from South Africa and the pursuit of a new world land speed record
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: E Meyer-Milne --- South African Environmental Observation Network, South Africa MC Mlambo --- Department of Freshwater Invertebrates, Albany Museum, South AfricaUntil now, Pumilibranchipus deserti was known from only one locality in Namibia. This paper reports the first record of this species from South Africa in Hakskeen Pan, Northern Cape, which represents a new, easterly range extension of the known distribution... -
Vachellia sieberiana var. woodii, a high-altitude encroacher: the effect of fire, frost, simulated grazing and altitude in north-western KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Jennifer M Russell --- School of Life Sciences, South Africa Michelle J Tedder --- School of Life Sciences, South Africa Stuart Demmer --- School of Life Sciences, South AfricaSavannas and grasslands throughout the world are experiencing bush encroachment, which has serious consequences for net primary productivity. In South Africa, Vachellia sieberiana is encroaching into the savannas and high-altitude grasslands of KwaZulu-Natal. We investigated the role of fire, frost... -
Clay and iron oxide contents of prismacutanic B, G, soft plinthic B, and E horizons described during the land type survey of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Anizka Stolk --- Department of Soil, Crop and Climate Sciences, South Africa Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Sciences, South AfricaHumans organise their environment, including soils. With soil classification the challenge is to consistently differentiate between soils. This study was therefore initiated to summarise selected properties of the prismacutanic B, G, soft plinthic B, and E horizons, described during the... -
Ecology, conservation, and phylogenetic position of the Madagascar Jacana Actophilornis albinucha
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Josephine D’Urban Jackson --- Milner Centre for Evolution, Department of Biology and Biochemistry, United Kingdom Sama Zefania --- Institut d’Enseignement Supérieur de Menabe, Madagascar Sebastien Moehy --- Institut d’Enseignement Supérieur de Menabe, Madagascar Andrew J Bamford --- Wildfowl and Wetlands Trust, United Kingdom Michael W Bruford --- Organisms and Environment Division, School of Biosciences, United Kingdom Tamás Székely --- Milner Centre for Evolution, Department of Biology and Biochemistry, United KingdomThe Madagascar Jacana Actophilornis albinucha (Jacanidae) is an endemic shorebird found in the threatened wetlands of western Madagascar. This species is presumed to exhibit classical polyandry; however, few data are available to support that assumption. More generally, a lack of... -
The first range-wide assessment of Saddle-billed Stork Ephippiorhynchus senegalensis distribution
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jonah Gula --- Department of Biology, United States Floyd Weckerly --- Department of Biology, United States KS Gopi Sundar --- International Crane Foundation, United StatesThe Saddle-billed Stork Ephippiorhynchus senegalensis exemplifies a case in conservation research in which a species is assessed as Least Concern on the IUCN Red List and the resulting consideration of low conservation priority has precluded proper scientific study. As a... -
Geographical and temporal variation in the diet of Bank Cormorants Phalacrocorax neglectus in South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: BM Dyer --- Department of Environment, South Africa J Cooper --- Department of Botany and Zoology, South Africa RJM Crawford --- Department of Environment, South Africa RB Sherley --- Environment and Sustainability Institute, University of Exeter, United Kingdom S Somhlaba --- Department of Environment, South Africa A Cockcroft --- Department of Environment, South Africa L Upfold --- Department of Environment, South Africa AB Makhado --- Department of Environment, South AfricaThe Bank Cormorant Phalacrocorax neglectus is endemic to the Benguela upwelling ecosystem off southwest Africa and is classified as Endangered owing to a recent large reduction in its number. It is thought that food scarcity, including a decreased abundance of... -
The avifauna, conservation and biogeography of the Njesi Highlands in northern Mozambique, with a review of the country’s Afromontane birdlife
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Samuel EI Jones --- School of Biological Sciences, United Kingdom Gabriel A Jamie --- Biodiversity Inventory for Conservation, Belgium Emidio Sumbane --- Biodiversity Inventory for Conservation, Belgium Merlijn Jocque --- Biodiversity Inventory for Conservation, BelgiumNorthern Mozambique’s ‘sky-island’ mountains have become increasingly recognised for their Afromontane birdlife. Despite growing ornithological coverage, however, several Mozambican mountains remain poorly known. We present results from a three-week survey of three such mountains: the Njesi Plateau, Mount Chitagal and... -
A comparison of aquatic macroinvertebrate and large branchiopod community composition between temporary pans of a conservation area and surrounding communal area in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: T Dube --- Animal Ecology, Global Change and Sustainable Development, Belgium L de Necker --- Water Research Group, School for Biological Sciences, South Africa V Wepener --- Water Research Group, School for Biological Sciences, South Africa NJ Smit --- Water Research Group, School for Biological Sciences, South Africa T Pinceel --- Animal Ecology, Global Change and Sustainable Development, Belgium GN Mwaijengo --- Animal Ecology, Global Change and Sustainable Development, Belgium P Lemmens --- Laboratory of Aquatic Ecology, Evolution and Conservation, Belgium L Brendonck --- Animal Ecology, Global Change and Sustainable Development, BelgiumAlthough temporary wetlands are often biodiversity hotspots that deliver multiple ecosystem services, they are also threatened by human exploitation. We conducted a comparative field study to investigate the impact of reserve protection on the diversity and community structure of aquatic... -
Response of the barrier island coastal region of southwestern Nigeria to climate and non-climate forcing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: IB Danladi --- Department of Geological Engineering, Turkey M Gül --- Department of Geological Engineering, Turkey E Ateş --- Vocational School of Ayaş, TurkeyDespite threats emanating from the influence of climate and non-climate forcing on the barrier island coastal region of southwestern Nigeria, the extent of the coastal erosion is poorly understood. We report evidence of coastal erosion and sediment accumulation in the... -
Chondrichthyans as an umbrella species-complex for conserving South African biodiversity
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GJ Osgood --- Department of Biology, Canada ME McCord --- South African Shark Conservancy (SASC), South Africa JK Baum --- Department of Biology, CanadaConservation surrogates, such as umbrella and flagship species, could help focus South Africa’s limited resources for research and management and enhance the conservation gains from marine protected areas (MPAs). Sharks, rays and chimaeras (Chondrichthyes), which are charismatic and ecologically diverse,... -
Soil organic carbon in agricultural systems of six countries in East Africa – a literature review of status and carbon sequestration potential
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S Namirembe --- Stepup Standard Ltd., Uganda K Piikki --- Swedish University of Agricultural Sciences (SLU), Sweden R Sommer --- WWF Deutschland, Agriculture & Land Use Change, Germany M Söderström --- Swedish University of Agricultural Sciences (SLU), Sweden B Tessema --- Ethiopian Institute of Agricultural Research (EIAR), Ethiopia SS Nyawira --- International Center for Tropical Agriculture (CIAT), KenyaCropland soils are considered to have the potential to sequester atmospheric CO2 through agronomic best management practices (BMPs). To estimate this potential in East Africa, the authors reviewed 69 published studies from Ethiopia, Kenya, Rwanda, Tanzania, Uganda, and Burundi assessing... -
Vulnerability, institutional arrangements and the adaptation choices made by farmers in the Western Cape province of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sanne Raaijmakers --- Fagelstraat 75-HS, the Netherlands Pieter A Swanepoel --- Department of Agronomy, South AfricaFrom 2015 to 2018, South Africa suffered from the worst drought since 1904. Climate change is predicted to increase both the frequency and intensity of droughts in parts of South Africa. In this light it is evident that agricultural systems... -
Revegetation of marginal saline rangelands of southern Tunisia using pastoral halophytes
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Abderrazak Tlili --- , Tunisia Emna Ghanmi --- , Tunisia Naziha Ayeb --- , Tunisia Mounir Louhaichi --- , Jordan Mohamed Neffati --- , Tunisia Mohamed Tarhouni --- , TunisiaRevegetation of marginalised rangelands using pastoral halophytes is considered an appropriate scientific and environmental approach to rehabilitation. Atriplex halimus L. (Amaranthaceae), A. mollis Desf. (Amaranthaceae), Cenchrus ciliaris L. (Poaceae) and Lotus creticus L. (Fabaceae) are promising species for arid rangeland... -
Persistent essentialism in Polish nationalist discourse: a Wittgensteinian critique
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Witold Jacorzynski --- , MexicoEssentialism, an erroneous way of thinking that can be traced to classical philosophy, assumes a thing to hold necessary intrinsic characteristics. Such thinking has been commonly employed for a popular understanding of bounded groups of people, establishing imaginary communities and... -
Effects of untreated industrial effluents on water quality and benthic macroinvertebrate assemblages of Lake Hawassa and its tributaries, Southern Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ST Mereta --- , Ethiopia A Ambelu --- , Ethiopia A Ermias --- , Ethiopia Y Abdie --- , Ethiopia M Moges --- , Ethiopia A Haddis --- , Ethiopia D Hailu --- , Ethiopia H Beyene --- , Ethiopia B Kebede --- , Ethiopia WL Mulat --- , United StatesThe present study investigates the impacts of industrial effluents on the macroinvertebrate assemblages and water quality of the Lake Hawassa watershed. The water quality and macroinvertebrate assemblages were assessed at 40 sampling sites. The chemical and ecological water quality was... -
The effectiveness of riparian zones in mitigating water quality impacts in an agriculturally dominated river system in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CR Petersen --- , South Africa NZ Jovanovic --- , South Africa MC Grenfell --- , South AfricaThis study evaluates relationships between contrasting land uses representing an anthropogenic impact gradient in a coastal agricultural catchment, and riparian vegetation, as reflected in changes in nutrient dynamics and water quality. The objectives were to: 1) determine the water and... -
Spatial variability of aquatic macroinvertebrate assemblages in the Okavango Delta, Botswana: considerations for developing a rapid bioassessment tool
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Dallas --- , South Africa B Mosepele --- , BotswanaSpatial variability in macroinvertebrate assemblages of the Okavango Delta, Botswana, was examined to evaluate differences in assemblages at a regional and habitat scale. Sampling was undertaken six times during a one-year cycle from 2005 to 2006, with 228 macroinvertebrates samples... -
Trends in populations of Blue Crane Anthropoides paradiseus in agricultural landscapes of Western Cape, South Africa, as measured by road counts
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Donella J Young --- , South Africa James A Harrison --- , South AfricaPopulation trends of the Blue Crane Anthropoides paradiseus were monitored by volunteers participating in Coordinated Avifaunal Roadcounts (CAR) in the Overberg and Swartland agricultural regions of the Western Cape province from 1993 and 1996, respectively, until 2019 in the Overberg... -
Effect of added organic substrates on reduction in a soil from the Maputaland Coastal Plain
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Brenton Mabuza --- , South Africa Cornelius Wilhelm van Huyssteen --- , South AfricaWetland soils of the Maputaland Coastal Plain do not exhibit the redox morphology typically associated with extended periods of water saturation. The aim of this paper was to determine if the addition of various organic substrates (buffalo grass, peat, sucrose)... -
Ecosystem service values of sediment generation and entrapment by marginal coral reefs at Sodwana Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SCS Laing --- , South Africa MH Schleyer --- , South Africa JK Turpie --- , South AfricaCoral reefs provide a multitude of goods and services, some of which are difficult to value due to their intangible nature and the absence of markets to ascribe their relative worth. The coral reefs of Sodwana Bay on the northeast... -
Wave setup at Tristan da Cunha
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PL Woodworth --- , United KingdomWave setup was investigated using data from tide gauges in a small harbour at the island of Tristan da Cunha in the South Atlantic Ocean. Frequent examples of wave setup were found during the period 1986–1992, but were much less... -
Rediscovery, range extension, habitat and phylogenetic relation of the endemic Scaled Sandveld Lizard Nucras scalaris Laurent, 1964 (Sauria: Lacertidae) in the central Angolan plateau
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Ninda L Baptista --- Instituto Superior de Ciências da Educação da Huíla (ISCED-Huíla), Angola Krystal A Tolley --- South African National Biodiversity Institute, Kirstenbosch Research Centre, South Africa Marc Bluhm --- Biodiversity, Ecology and Evolution of Plants, Institute of Plant Science and Microbiology, University of Hamburg, Germany Manfred Finckh --- Biodiversity, Ecology and Evolution of Plants, Institute of Plant Science and Microbiology, University of Hamburg, Germany William R Branch --- Port Elizabeth Museum (Bayworld), South AfricaThe Scaled Sandveld Lizard Nucras scalaris Laurent, 1964 is a poorly known lacertid endemic to north-eastern Angola and is only known from the type series collected more than half a century ago. The original description provided a comprehensive morphological description,... -
Restricted breeding habitat of the Critically Endangered White-winged Flufftail in Ethiopia and its conservation implications
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: RB Colyn --- , South Africa MA Howes-Whitecross --- , South Africa C Howes --- , South Africa HA Smit-Robinson --- , South AfricaThe White-winged Flufftail Sarothrura ayresi is considered the most threatened rallid species in Africa and has significant data deficiencies related to population dynamics, ecology and conservation priorities. The Ethiopian Highlands have until recently, been the only known breeding area for... -
Ranging behaviour of Long-crested Eagles Lophaetus occipitalis in human-modified landscapes of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Machawe I Maphalala --- , South Africa Ara Monadjem --- , Eswatini Keith L Bildstein --- , South Africa Shane McPherson --- , South Africa Ben Hoffman --- , South Africa Colleen T Downs --- , South AfricaThe ranging behaviour of raptors in human-altered environments, such as agricultural and suburban landscapes, is becoming increasingly important for conservationists in the context of unprecedented high rates of anthropogenic land use change. We studied the movement ecology of adult Long-crested... -
Rats and prions at Tristan da Cunha Island
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ben J Dilley --- , South Africa Delia Davies --- , South Africa Julian Repetto --- , United Kingdom (South Atlantic Ocean) George Swain --- , United Kingdom (South Atlantic Ocean) Peter G Ryan --- , South AfricaTristan da Cunha is a 96 km2 volcanic island in the South Atlantic Ocean. Black Rats Rattus rattus reached the island from a shipwreck in 1882 and their depredation of seabirds’ eggs and chicks are likely partly responsible for the... -
Challenges in nest monitoring of White-winged Flufftails Sarothrura ayersi in Ethiopia
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Melissa A Howes-Whitecross --- , South Africa Caroline Howes --- , South Africa Robin B Colyn --- , South Africa Hanneline A Smit-Robinson --- , South AfricaThe Critically Endangered White-winged Flufftail Sarothrura ayresi is only known to breed in the high-altitude wetlands of Ethiopia and South Africa. Several studies have documented the physical properties of nests in the well-known Berga wetland, Ethiopia; however, behavioural accounts of... -
Characterisation of ecosystem-based adaptations to drought in the central cattle corridor of Uganda
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Susan Nanfuka --- , Uganda David Mfitumukiza --- , Uganda Anthony Egeru --- , UgandaEcosystems provide climate-change adaptation opportunities including ecosystem services, adaptation benefits and livelihood improvement especially for natural resource dependent communities. To contribute to the understanding of location specific adaptation processes of predominantly agro-pastoralists, a study was carried out in the central... -
What grass characteristics drive large herbivore feeding patch selection? A case study from a South African grassland protected area
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Elena Mariotti --- , South Africa Francesca Parrini --- , South Africa Cornelius J Louw --- , South Africa Jason P Marshal --- , South AfricaThe coexistence of a large herbivore community depends on the degree of overlap in the resource used by the different species composing it. We investigated the role of grass greenness, height, biomass and feeding patch status on feeding patch selection... -
Inter-annual growth response of three Miombo tree species to climatic effects
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Francis Munalula --- , South Africa Thomas Seifert --- , South Africa Martina Meincken --- , South AfricaMiombo woodlands cover a large part of Southern Africa and contribute an important wood source for the local wood industry. The already observed and further predicted changes in climatic patterns can be expected to affect the wood properties of Miombo... -
Mozambique Island, Cabaceira Pequena and the Wider Swahili World: An Archaeological Perspective
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Diogo V. Oliveira --- , MozambiqueWhen the Portuguese reached Mozambique Island at the end of the fifteenth century, they encountered a populated coast of diverse communities integrated within a wider Swahili world. Swahili society was in its fundamental nature cosmopolitan, and incorporated arts, cultures, peoples,... -
Seasonal habitat utilisation and morphological characteristics of Chamaeleo dilepis on Telperion Nature Reserve, Mpumalanga, South Africa
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Trevor L O’Donoghue --- Applied Behavioural Ecology and Ecosystem Research Unit, Department of Environmental Sciences, University of South Africa, South Africa Kerry Slater --- Applied Behavioural Ecology and Ecosystem Research Unit, Department of Environmental Sciences, University of South Africa, South Africa Leslie R Brown --- Applied Behavioural Ecology and Ecosystem Research Unit, Department of Environmental Sciences, University of South Africa, South AfricaLimited information on the habitat utilisation and seasonal activity of flap-necked chameleons (Chamaeleo dilepis) is available. We investigated habitat utilisation, seasonal distribution, and sexual dimorphism of C. dilepis on Telperion Nature Reserve (a privately protected natural area) in South Africa... -
The reptiles of Tinhosa Grande islet (Gulf of Guinea): A taxonomic update and the role of Quaternary sea level fluctuations in their diversification
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Luis MP Ceríaco --- Universidade do Porto, Portugal Justin Bernstein --- Rutgers University-Newark, USA Ana C Sousa --- Universidade de Évora, Portuga Mariana P Marques --- Universidade de Lisboa, Portugal Aaron M Bauer --- Villanova University, USA Sietze J Norder --- Leiden University Centre for Linguistics, The NetherlandsThe reptile fauna of Tinhosa Grande islet, Gulf of Guinea, comprises an endemic skink, Trachylepis adamastor, and an unidentified species of gecko of the genus Hemidactylus. Until recently, no molecular data were available for either species, impeding their phylogenetic placement... -
A characterisation of wetland soil types on the Maputaland Coastal Plain
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: ML Pretorius --- , CW van Huyssteen --- , LR Brown --- , AT Grundling --- , CT Downs --- ,This paper addresses the shortage of wetland soil data on the Maputaland Coastal Plain. It does so by investigating the relationship between wetland types, slope position and soil properties. Four wetland types (a valley-bottom system, perched pans, hygrophilous grasslands and... -
An assessment of the ecological condition of a wetland on the Lions River floodplain based on soil and vegetation parameters, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Ndlovu --- , South Africa DC Kotze --- , South Africa GPW Jewitt --- , South Africa CD Morris --- , South AfricaWetlands are increasingly exposed to human activities, resulting in degradation. As the wetland degrades, it loses functionality. In South Africa, wetlands can play an important water-regulating role. This study aims to establish the ecological condition of a historically utilised wetland... -
Ten research questions to support South Africa’s Inland Fisheries Policy
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: OLF Weyl --- , South Africa L Barkhuizen --- , South Africa K Christison --- , South Africa T Dalu --- , South Africa HA Hlungwani --- , South Africa D Impson --- , South Africa K Sankar --- , South Africa NE Mandrak --- , Canada SM Marr --- , South Africa JR Sara --- , South Africa NJ Smit --- , South Africa D Tweddle --- , South Africa NG Vine --- , South Africa V Wepener --- , South Africa M Zvavahera --- , South Africa IG Cowx --- , United KingdomSouth Africa is in the process of developing a National Freshwater (Inland) Wild Capture Fisheries Policy. A properly focused research strategy is essential to guide the policy development process, and thus a dedicated ‘Inland Fisheries’ workshop was convened by the... -
Impact of livestock grazing intensity on plant diversity of montane grassland in the northern Drakensberg, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: TA Shezi --- , South Africa TG O’Connor --- , South Africa ETF Witkowski --- , South AfricaCommunal livestock grazing is expected to impact botanical composition and plant diversity of Drakensberg montane grasslands. Accordingly, a grazing gradient extending outward from kraals, and fence-line contrasts between communal rangeland and protected areas (Golden Gate Highlands National Park and Royal... -
Community diversity, functional traits and adaptation of Stipa tenacissima L. under different grazing regimes in a North African arid montane rangeland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Jamila Msadek --- , Tunisia Abderrazak Tlili --- , Tunisia Marwa Moumni --- , Tunisia Mounir Louhaichi --- , Tunisia Mohamed Tarhouni --- , TunisiaThe mountain rangeland chain of Matmata (southern Tunisia) is characterised by an arid Mediterranean climate with severe droughts and high temperatures, combined with substantial human disturbance. In order to withstand these harsh conditions, plants have developed adaptive strategies and functional... -
Accounting for land cover changes and degradation in the Katse and Mohale Dam catchments of the Lesotho highlands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Jane Turpie --- , South Africa Grant Benn --- , South Africa Mark Thompson --- , South Africa Nigel Barker --- , South AfricaRangeland conditions in the Lesotho highland dam catchment areas is important for local livelihoods and regional water supply. We investigated changes in land cover and condition from 1991 (before construction) to 2013, using Landsat imagery. The Normalised Difference Vegetation Index... -
Phytomass and ecological significance of Chrysocoma ciliata L. within the Lets’eng-la-Letsie catchment area of Lesotho, southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: GN Smit --- , South Africa G Janse van Rensburg --- , South AfricaThe Lets’eng-la-Letsie wetland is an official Ramsar site, but the wetland and upland catchment areas suffer from overgrazing, erosion and over exploitation. Chrysocoma ciliata has a reputation as an unpalatable invader and is particularly common on the drier northern slopes... -
Assessing wetland functionality using soil surface indicators in Letšeng- la-Letsie wetland in Quthing District, Lesotho
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nthuseng Kahlolo --- , Lesotho Botle Mapeshoane --- , Lesotho Peter Chatanga --- , Lesotho Lerato Seleteng-Kose --- , Lesotho Makoala V Marake --- , LesothoWetlands are globally valuable ecosystems as they provide many important services to the human society, yet the ecology of some of them is yet to be understood. This study assessed the functionality of Letšeng-la-Letsie wetland in Lesotho, using the Landscape... -
A case study of rangeland vegetation changes from 1979 to 2016 in the Middle Atlas Mountains of Morocco
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: A El Aich --- , Morocco ME Fernández-Giménez --- , United States M Rouzi --- , Morocco CL Alados --- , SpainThis case study assessed changes in vegetation composition of a 0.8 ha rangeland site over the past four decades, in relation to changes in temperature and to an increase in grazing pressure. The frequency and standing crop (biomass) of species... -
Changes in pastoral mobility in a semi-arid montane region of South Africa: The role of policy and legislation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M Igshaan Samuels --- , South Africa Nicky Allsopp --- , South Africa M Timm Hoffman --- , South AfricaLegislation and policy are key tools used by governments to change the socio-economic and political landscape of agrarian systems with consequences for mobile pastoralism. This study used the social-ecological systems framework to examine how pastoral mobility in the semi-arid, montane... -
Analysing species site-specific tree growth, mortality and in-growth for miombo woodlands in Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: E E Njoghomi --- , Tanzania S Valkonen --- , K Karlsson --- ,The silvicultural information base for the development of management regimes for Tanzanian miombo woodlands is underdeveloped. The limited and fragmented information on tree growth and stand dynamics has constrained the progress of sustainable management in these woodlands. Therefore, this study... -
South African raptors in urban landscapes: a review
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Shane C McPherson --- , South Africa Petra Sumasgutner --- , Austria Colleen T Downs --- , South AfricaGlobally, but especially in Africa, increasing human populations and anthropogenic land-use change are generally affecting diversity negatively. Urban environments in southern Africa typically comprise a mosaic landscape of anthropogenic infrastructure with some green spaces. These urban cities have a range... -
Urban areas have lower species richness, but maintain functional diversity: insights from the African Bird Atlas Project
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Alan Tristram Kenneth Lee --- , South Africa Ulf Ottosson --- , Nigeria Colin Jackson --- , Kenya Sidney Shema --- , Kenya Chevonne Reynolds --- , South AfricaHigh human population growth and rapid urbanisation, particularly in Africa, have led to an increased interest in the impacts of this land-use change on bird communities. The African Bird Atlas Project, where species presence lists are collected in pentads, is... -
Land reform and its impact on the arid South African environment: Riemvasmaak as a case study
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: GS Fleury --- , South Africa MT Hoffman --- , South Africa SW Todd --- , South AfricaThe 75 000 ha, hyper-arid area of Riemvasmaak represents one of the first land restitution cases in post-apartheid South Africa. People who were forcibly removed in 1974 were resettled in 1995. We describe the impact that people and domestic livestock... -
Is a long hygroscopic awn an advantage for Themeda triandra in drier areas?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Craig D Morris --- , South AfricaThemeda triandra has bigeniculate hygroscopic lemma seed awns that twist when wet and drying, thereby transporting the caryopsis across the soil surface into suitable germination microsites. The prediction that awns would be longer in drier grassland and have greater motility... -
Long-term variation in the breeding diets of macaroni and eastern rockhopper penguins at Marion Island (1994–2018)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: FE Dakwa --- , South Africa PG Ryan --- , South Africa BM Dyer --- , South Africa RJM Crawford --- , South Africa PA Pistorius --- , South Africa AB Makhado --- , South AfricaPopulations of the macaroni penguin Eudyptes chrysolophus and the eastern rockhopper penguin E. filholi breeding at Marion Island (Prince Edward Islands) in the sub-Antarctic Indian Ocean decreased from 1994 to 2018. We examined their diets when rearing chicks during this... -
Taxonomic revision of the Jita snakes (Lamprophiidae: Boaedon) from São Tomé and Príncipe (Gulf of Guinea), with the description of a new species
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Luis MP Ceríaco --- Museu de História Natural e da Ciência da Universidade do Porto, Portugal Ana Lisette Arellano --- Golden Gate National Parks Conservancy, USA Robert C Jadin --- University of Wisconsin Stevens Point, Wisconsin, USA Mariana P Marques --- Universidade de Lisboa, Portugal Diogo Parrinha --- Universidade de Lisboa, Portugal Jakob Hallermann --- Universität Hamburg, GermanyThe taxonomic status of the São Tomé and Príncipe islands ‘Cobras Jitas’, genus Boaedon, has been a subject of confusion. Historically, these island populations have been referred to as part of either the Boaedon fuliginosus species complex or Boaedon capensis... -
Leopard tortoise Stigmochelys pardalis (Bell, 1928) mortality caused by electrified fences in central South Africa and its impact on tortoise demography
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Sharon Holt --- National Museum, South Africa Liora Kolska Horwitz --- The Hebrew University, Israel Beryl Wilson --- McGregor Museum, South Africa Daryl Codron --- University of the Free State, South AfricaThe leopard tortoise (Stigmochelys pardalis) is among the most ubiquitously distributed chelonian species in Africa. As with other chelonians, however, the species’ slow growth rate, coupled with low survivorship of juveniles, make it susceptible to declines under regimes of environmental... -
Topo-edaphic environment and forest plantation disturbance explain patterns of grassland species richness, composition and structure in an agro-ecological landscape, Maputaland, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AP Starke --- , South Africa TG O’Connor --- , South Africa CS Everson --- , South AfricaGrasslands of the Maputaland coastal plain are biologically diverse and provide a variety of ecosystems services. Yet grasslands in this region are vulnerable to continuing development by plantation forestry that provides economic benefits to local communities. In order to provide... -
Topo-edaphic environment and forestry plantation disturbance affect the distribution of grassland forage and non-forage resources, Maputaland, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AP Starke --- , South Africa TG O’Connor --- , South Africa CS Everson --- , South AfricaGrasslands are integral to rural livelihoods in southern Africa, because they provide hydrological regulation services and a variety of plant resources, including livestock fodder, medicines, and food products. To ensure ongoing provision of these resources in rapidly developing rural landscapes,... -
Bull shark Carcharhinus leucas recruitment into the St Lucia Estuary, South Africa, after prolonged mouth closure, and the first observation of a neonate bull shark preyed on by a Nile crocodile Crocodylus niloticus
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Daly --- , South Africa P Le Noury --- , United Kingdom TN Hempson --- , Mozambique M Ziembicki --- , Mozambique JM Olbers --- , South Africa GM Brokensha --- , South Africa BQ Mann --- , South AfricaEstuaries provide critical nursery habitat for juvenile bull sharks Carcharhinus leucas, as they have the ability to withstand a wide range of salinities. St Lucia is the largest estuarine lake in Africa and was once a key nursery for bull... -
A review of the limnology of the Okavango Delta, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Mangaliso J Gondwe --- , Botswana Mike Murray-Hudson --- , Botswana Nashaat M Mazrui --- , Botswana Oliver Moses --- , Botswana Edwin Mosimanyana --- , Botswana Oarabile Mogobe --- , BotswanaWater quantity and quality are important aspects in the management of aquatic ecosystems, including wetlands. This paper has integrated available knowledge from literature on the limnology of the Okavango Delta, Botswana. The current near-natural solute concentrations in the inflow waters... -
A review of the populations of tilapiine species in lakes Victoria and Naivasha, East Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Edwine Yongo --- , Kenya Laurent Cishahayo --- , Peoples Republic of China Eunice Mutethya --- , Kenya Bonface Mnang’at Alkamoi --- , Kenya Kokwon Costa --- , Kenya Nzeyimana Jean Bosco --- , Peoples Republic of ChinaThis paper discusses the catch trends, population attributes and biological characteristics of tilapiine species that are both native and that have been introduced into Lake Victoria and Lake Naivasha. Predation by Lates niloticus, species hybridisation, overfishing, pollution and eutrophication have... -
Rural community use and perception of rangeland products in Eastern Cape Province, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lwandiso Mdiya --- , South Africa Amon Taruvinga --- , South Africa Abbyssinia Mushunje --- , South Africa Keletso Mopipi --- , South Africa Saul Ngarava --- , South AfricaThe significance of rangelands to the welfare of the rural poor has been acknowledged. The study explores perceptions and determinants of rural households’ rangeland harvesting. A cross-sectional survey of 159 rural households harvesting communal rangeland products was utilized, as well... -
Dazzled by the light: the impact of light pollution from ships on seabirds at Tristan da Cunha
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Peter G Ryan --- , South Africa E Molly Ryan --- , South Africa James P Glass --- ,Most of the millions of burrow-nesting petrels that breed at Tristan da Cunha are susceptible to light pollution. On dark, misty nights, petrels become disoriented by artificial lights, mainly from ships. From 2013 to 2021 at least 1 823 petrels... -
Assessment of river health using benthic macroinvertebrates in the Dwars River, Olifants Water Management Area, Limpopo province, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TV Mmako --- , South Africa A Addo-Bediako --- , South Africa WJ Luus-Powell --- , South Africa M Kekana --- , South AfricaThe study assessed the impact of water and sediment quality on benthic macroinvertebrate assemblages in the Dwars River, a tributary of the Olifants River, Limpopo province, South Africa. Physico-chemical variables, heavy metals and macroinvertebrates were collected using standard methods. A... -
Seasonal variation and drivers of zooplankton, macroinvertebrate and littoral fish communities from irrigation ponds in a semi-arid region in the Eastern Cape (South Africa)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Mofu --- , South Africa T Dalu --- , South Africa RJ Wasserman --- , South Africa DJ Woodford --- , South Africa D Khosa --- , South Africa OLF Weyl --- , South AfricaIrrigation ponds are increasingly abundant globally, particularly in water-stressed countries with limited natural surface waters, yet knowledge of their ecology is limited. Here, we assessed zooplankton, macroinvertebrate, and littoral fish communities from irrigation ponds located in the Sundays River Valley... -
Conservation Agriculture in rainfed annual crop production in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: JA Strauss --- , South Africa PA Swanepoel --- , South Africa MC Laker --- , South Africa HJ Smith --- , South AfricaPressures from population growth, changing diets and climate change are driving transformation of our global food production to ensure more efficient, reliable and sustainable production. In South Africa, arable land for crop production and permanent pastures accounts for 10–12% of... -
Soil fertility trends and management in Conservation Agriculture: a South African perspective
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: GP Nortjé --- , South Africa MC Laker --- , South AfricaConservation Agriculture (CA) is an integrated approach that consists of a suite of practices, namely no-till farming, cover crops, and crop rotation that includes at least three crops. In the global context, CA is implemented widely in South America (Argentina... -
A history of Conservation Agriculture in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: JA Strauss --- , South Africa PA Swanepoel --- , South Africa H Smith --- , South Africa EH Smit --- , South AfricaConservation Agriculture (CA) is a holistic farming system aimed at the conservation of natural resources by halting soil erosion and increasing biodiversity in cropping systems, while still effecting sustainable production. Conservation agriculture is based on three principles, namely minimum soil... -
Importance of detailed soil surveys for Conservation Agriculture
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: JL Schoeman --- , E Verster --- , HB Booyens --- , MJ du Plessis --- ,This paper explores the role that detailed soil surveys can play in Conservation Agriculture (CA). While it is widely acknowledged that CA practices have to be adapted to local conditions, it appears as if in-field physical soil and hydrological properties,... -
The effects of tree canopies on invasive Lantana camara: a follow-up study 18 years later
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Kiersten McMahon --- , United States David Ward --- , United StatesLantana camara is primarily a bird-dispersed invasive plant species that has spread quickly across South Africa in disturbed areas. We re-examined the distribution of Lantana at Rodger and Twine’s (2002) study site (R&T) in a highly grazed communal area and... -
Shortwave infrared vegetation index-based modelling for aboveground vegetation biomass assessment in the arid steppes of Algeria
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Louaï Benseghir --- , Algeria Nour El Islam Bachari --- , AlgeriaSelecting the appropriate vegetation index for accurate biomass estimation is a prerequisite before and during the ecosystem management project. This study, aims to compare Vegetation Indices (VIs) that are combining both Visible and Near Infrared OLI bands (VNIR-VIs), Visible and... -
Increased resolution of soils information through morphon segmentation of the Korentepoort mountain catchment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: GJ Malan --- , South Africa WP De Clercq --- , South Africa AB Rozanov --- , South Africa C Clarke --- , South Africa H Helness --- , Norway S Damman --- , Norway N Elema --- , South Africa J Atkinson --- , South AfricaRecent climate instability necessitates a fresh approach to water cycle services in the Hessequa municipal region. Attention is drawn to impacts on water storage in this region, and an assessment of the current status is necessary. Land-use change and soil... -
Pigeonpea production constraints and farmers’ trait preferences in Malawi: implications for variety design
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Esnart Nyirenda Yohane --- , South Africa Hussein Shimelis --- , South Africa Mark Laing --- , South Africa Admire Shayanowako --- , South Africa Isack Mathew --- , South Africa Justus M Chintu --- , MalawiPigeonpea Cajanus cajan (L.) Millsp. is the most important legume cash crop grown in Malawi. However, productivity is low due to biotic and abiotic stresses and socioeconomic constraints. The objectives of this study were to determine farmers’ perceived constraints to... -
Contrasting effects of soil pH on seed germination and early seedling growth of Calobota sericea and Lessertia frutescens subs. frutescens
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Francuois L Müller --- ,This study evaluated the impacts of pH on the germination and early seedling growth of Calobota sericea and Lessertia frutescens subsp. frutescens, two perennial legume species found in the semi-arid rangelands of South Africa. The results of this study revealed... -
Goat feeds and feeding practises in a semi-arid smallholder farming system in Zimbabwe
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Takudzwa Charambira --- , Zimbabwe Shelton M Kagande --- , Zimbabwe Irenie Chakoma --- , Zimbabwe Gwinyai Chibaira --- , Zimbabwe Prisca H Mugabe --- , ZimbabweThis study was conducted to identify the available goat feed resources for smallholder farmers in the semi-arid region of Zimbabwe. An ecological rangeland assessment was combined with participatory research methods to determine the diversity of feed resources in two wards... -
Mountain refugia limit anthropogenic suppression in a re-established felid population: the case of the Magaliesberg leopard population in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: R John Power --- , South Africa Matt S Rogan --- , South Africa Vincent N Naude --- , South AfricaAlthough highly adaptable, leopards incur substantial mortality in human-modified landscapes and generally subsist at lower densities than in protected areas. Leopard populations are difficult to enumerate across any landscapes, though there have been strides to improve upon this, particularly in... -
Local variations in the response of birds to human presence in urban areas
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Tristan Nyatanga --- , Zimbabwe Henry Ndaimani --- , South Africa Tanyaradzwa Gaza --- , ZimbabweStudies that seek to understand the local variations in the response of birds to human disturbance in urban areas are important for conservation. This article investigated the contribution of human population density in the different urban land use zones of... -
The effects of habitat loss and fragmentation on updated estimates of the population of the Agulhas Long-billed Lark Certhilauda brevirostris, a South African endemic
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Steven W Evans --- , South AfricaThe Agulhas Long-billed Lark Certhilauda brevirostris is a South African endemic and is restricted to the fynbos habitat of the Agulhas Plain in the southwestern corner of South Africa. The 1990, 2014, and 2018 land use land cover (LULC) databases... -
The effect of adjacent vegetation on fire severity in Afrotemperate forest along the southern Cape coast of South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Brandon Giddey --- , South Africa Johan A Baard --- , South Africa Lufuno Vhengani --- , South Africa Tineke Kraaij --- , South AfricaRecently two large wildfires (around the towns of Knysna in 2017 and George in 2018) jointly burnt over 80 000 ha in the southern Cape, South Africa. Here, patches of closed-canopy Afrotemperate forest occur within a matrix of fire-prone (native)... -
Altered urban landscape: Shedding light on conflicts in a landfill community in Ghana
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ebenezer Owusu-Sekyere --- , GhanaThe challenge of solid waste management has been subjected to a variety of reactions and interpretations: strange mixtures of neglect and misconceptions of what could be the way forward. Over the years, Ghanaian authorities have problematized issues of waste management... -
A laissez-faire management approach in a grassland landscape results in a fine-scale, spatio-temporally heterogeneous fire pattern
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Marc E Stalmans --- , South Africa Ed TF Witkowski --- , South Africa Kevin Balkwill --- , South AfricaWhat are the spatio-temporal characteristics of a fire pattern that is allowed to develop over time across a species- rich, predominantly grassy landscape? More than 1 300 fires were documented over 13 years in the 48 000 ha Songimvelo Game... -
Intentions behind common and risky fires in south-eastern Tanzania
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Ellie Wood --- , United Kingdom Mercy Mgaya --- , United Republic of Tanzania Christopher Andrews --- , United Kingdom Kate Schreckenberg --- , United Kingdom Janet A Fisher --- , United Kingdom Isla Grundy --- , Casey M Ryan --- , United KingdomHuman-set fires are a crucial component of African savannas, affecting ecosystem structure, carbon emissions, local hazards and livelihoods. Yet, most fire research in these ecosystems focuses on the fire ecology of protected areas. Research exploring fire regimes in inhabited landscapes... -
High-intensity fire experiments to manage shrub encroachment: lessons learned in South Africa and the United States
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Rheinhardt Scholtz --- , United States Victoria M Donovan --- , United States Tercia Strydom --- , South Africa Carissa Wonkka --- , United States Urs P Kreuter --- , United States William E Rogers --- , United States Charles Taylor --- , United States Izak PJ Smit --- , South Africa Navashni Govender --- , South Africa Winston Trollope --- , South Africa Dillon T Fogarty --- , United States Dirac Twidwell --- , United StatesHuman alteration of fire regimes is a hallmark of the Anthropocene; yet few studies have fully explored the implications of utilizing high-intensity fires in grasslands and savannas to manage shrub encroachment. Decades of fire research in South Africa inspired a... -
Long-term frequent fires do not decrease topsoil carbon and nitrogen in an Afromontane grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nicola Findlay --- , The Netherlands Alan Manson --- , South Africa Joris PGM Cromsigt --- , The Netherlands Paul Gordijn --- , South Africa Cathy Nixon --- , South Africa Max Rietkerk --- , The Netherlands Guy Thibaud --- , South Africa Martin J Wassen --- , The Netherlands Mariska te Beest --- , The NetherlandsFire has been an integral evolutionary force shaping and maintaining grassy biomes, such as the Afromontane grasslands of South Africa. Afromontane grasslands represent a large carbon reservoir, but it is uncertain how fire affects their long-term C storage. We investigated... -
The effect of changes in human drivers on the fire regimes of South African grassland and savanna environments over the past 100 years
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: James R Puttick --- , South Africa M Timm Hoffman --- , South Africa Timothy G O’Connor --- , South AfricaFire is a key regulator of tree cover in grassy ecosystems, but century-long changes in fire regimes have not been explicitly quantified in South Africa. This study aimed to determine changes in the fire regimes of South Africa’s grassy biomes... -
Too much, too late: fires and reactive wildfire management in northern Botswana’s forests and woodland savannas
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L Cassidy --- , Botswana JS Perkins --- , Botswana J Bradley --- , BotswanaAcross much of southern Africa’s savanna wildernesses, wildfires burn unchecked. This is particularly true in the woodland savannas of northern Botswana, where wildfires originate outside of management activities, and are left to burn uncontrolled, because of limited resources and remoteness... -
The ecology of coastal wetland ponds created by diamond mining in southern Namibia. 1. Physical conditions
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Maritz --- , South Africa D Pillay --- , South Africa GM Branch --- , South AfricaCoastal diamond mining in southern Namibia involves constructing seawalls to hold the sea at bay, and seaward accretion of the shoreline by up to 800 m opens what was previously the surf zone for excavation and extraction of bedrock alluvial... -
Macroinvertebrate community structure and diversity in relation to environmental factors in wetlands of the lower Gilgel Abay River catchment, Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Habtamu Getnet --- , Ethiopia Seyoum Mengistou --- , Ethiopia Bikila Warkineh --- , EthiopiaThe influence of environmental factors on the diversity of macroinvertebrates was studied in the wetlands of the Gilgel Abay River (GAR) catchment in Ethiopia. The study was done between September 2017 and March 2018, encompassing both wet and dry seasons... -
Structural assemblages of plant species in the Owabi Ramsar Wetland in the Ashanti Region of Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Collins A Nsor --- , Ghana Rockson Acolatse --- , Ghana John N Mensah --- , Ghana Samuel K Oppong --- , Ghana Daniel Dompreh --- , Ghana Louis Addai-Wireko --- , GhanaAnthropogenic activities as predictors of species assemblages in the Owabi Ramsar Wetland were investigated between May and September 2019. Data were collected in 154 plots at five different sites. The prevalence index method was used to categorise the species into... -
Traditional authorities, legal power and land disputes in north-west Namibia
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Kana Miyamoto --- , JapanThis study considers the revitalisation of traditional authorities, a phenomenon found throughout modern Africa. It analyses and compares court cases involving land disputes amongst herders living in north-western Namibia. Since the 1990s, African nations have pursued land reform to stabilise... -
Swahili Seafarers’ Musings and Sensuous Seascapes in Yvonne Owuor’s The Dragonfly Sea
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Jauquelyne Kosgei --- , South AfricaThis paper provides an analysis of Yvonne Owuor’s The Dragonfly Sea (2019) with a focus on local knowledges of the sea that shore folk and seafarers from Pate Island on the Kenyan coast possess. Attention is paid to how these... -
Comparative avifaunal richness and diversity in invasive Acacia dealbata patches and adjacent montane grasslands
Item type: Journal Article • Journal: African Zoology • Authors: Jessica Seath --- , South Africa Charlie Shackleton --- , South AfricaInvasive alien species are regarded as the second greatest threat to biodiversity globally. Yet, at a local scale their effects may vary, underlying the requirement for more local-scale studies across taxa and settings. Here we consider the effects of an... -
Assessments of range-wide distribution of six African storks and their relationships with protected areas
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jonah Gula --- , USA M Clay Green --- , USA Sarah Fritts --- , USA W Richard J Dean --- , South Africa KS Gopi Sundar --- , IndiaSpecies range maps provided by the IUCN and BirdLife International are recognised to sometimes mischaracterise distribution and have resulted in inaccurate status assessments. In this study we assessed distribution trends and relationships with protected area extent for six African storks,... -
Aluminium and manganese leaching and retention in two contrasting soils treated with aluminium-based sludge water in a column experiment
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S Dube --- , South Africa P Muchaonyerwa --- , South Africa F Mapanda --- , Zimbabwe JC Hughes --- , South AfricaLiquid waste (sludge water (SW)) from treatment of drinking water contains impurities which pose disposal challenges. Irrigation with SW could be a solution for the Morton Jaffray Water Works. This study was conducted to determine the effects of SW dilution... -
Movement behaviour of catface rockcod Mycteroperca (Epinephelus) andersoni (Epinephelidae) off the eastern seaboard of southern Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- , South Africa R Daly --- , South Africa GL Jordaan --- , South Africa WN Dalton --- , South Africa ST Fennessy --- , South AfricaMovement behaviour of the endemic epinephelid Mycteroperca andersoni (formerly allocated to genus Epinephelus) along the east coast of southern Africa was investigated using both conventional dart tagging and passive acoustic telemetry. Results from both methods showed that this species is... -
Use of remotely sensed derived metrics to assess wetland vegetation responses to climate variability-induced drought at the Soetendalsvlei wetland system in the Heuningnes Catchment, Western Cape province, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NC Ndlala --- , South Africa T Dube --- , South AfricaWetland vegetation plays an important role in the environmental functioning of wetlands through the provision of ecosystem services, such as food and critical habitat for organisms that live in or near water resources. The ecosystem services provided by wetland vegetation... -
Evidence for overfishing of tigerfish Hydrocynus vittatus (Castelnau 1861) in the Kavango River, Namibia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FJ Jacobs --- , Namibia TF Naesje --- , Norway EM Ulvan --- , Norway CJ Hay --- , Namibia FH Khaebeb --- , Namibia OLF Weyl --- , South AfricaThe fishery for the African tigerfish Hydrocynus vittatus in northern Namibia makes a substantial contribution to surrounding food security and stimulates the local economy through subsistence and recreational fishing. However, local fishers suggest that catch rates of H. vittatus have... -
Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L van Niekerk --- , South Africa S Taljaard --- , South Africa SJ Lamberth --- , South Africa JB Adams --- , South Africa SP Weerts --- , South Africa CF MacKay --- , South AfricaGlobally, the ability of estuaries to sustain functionality and productivity is deteriorating rapidly under ever-increasing anthropogenic pressures. We present a systematic approach to identify, characterise and rank global pressures affecting estuaries. Six main pressure categories are reviewed: freshwater flow modification;... -
Diet of a generalist mammalian mesocarnivore in an urban matrix
Item type: Journal Article • Journal: African Zoology • Authors: Jarryd P Streicher --- , South Africa Melanie B Streicher --- , South Africa Tharmalingam Ramesh --- , South Africa Colleen T Downs --- , South AfricaAnthropogenic habitat conversion through urban sprawl is driving mesocarnivores to modify their behaviour and ecology. Thorough knowledge of their feeding ecology is fundamental in understanding the pressures imposed on mesocarnivores by urbanisation. The diet of the water mongoose Atilax paludinosus... -
Assessment of long-term protection on the aboveground biomass and organic carbon content using two non-destructive techniques: case of the Sidi Toui National Park in southern Tunisia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Roukaya Chibani --- , Tunisia Abderrazak Tlili --- , Tunisia Farah Ben Salem --- , Tunisia Mounir Louhaichi --- , Tunisia Azaiez Ouled Belgacem --- , Saudi Arabia Mohamed Neffati --- , TunisiaLong-term protection of arid ecosystems changes the vegetation and soil structures. The quantification of aboveground biomass and carbon content are among the principal indicators to evaluate these changes. Most methods used to quantify these parameters are costly, time consuming and... -
Estimating the economic income and social contributions derived from the South African west coast rock lobster fishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JM Eggers --- Rhodes University, South Africa KL Cochrane --- Rhodes University, South Africa WHH Sauer --- Rhodes University, South AfricaThe west coast rock lobster Jasus lalandii fishery is South Africa’s third-most-valuable fishery, although the stock is currently estimated at <2% of its pristine biomass. Recent ecologically necessary reductions in the total allowable catch (TAC) had negative economic impacts on... -
Challenges to the integration of the Platfontein San in South Africa between 1990 and 2003
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Eldar Salakhetdinov --- University of South Africa, South AfricaThis article is based on a narrative case study that explores the controversy in the history surrounding the Platfontein San. During the South African border war, San soldiers joined the South African Defence Force in their fight against African liberation... -
An assessment of water and sediment quality of aquatic ecosystems within South Africa’s largest floodplain
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D van Rooyen --- , South Africa R Gerber --- , South Africa NJ Smit --- , South Africa V Wepener --- , South AfricaNdumo Game Reserve (NGR), a Ramsar site, situated in South Africa’s largest floodplain (Phongolo River floodplain) in northern KwaZulu-Natal, with important aquatic ecosystems: the Usuthu and Phongolo rivers and their associated floodplain lakes. While the Phongolo River is regulated, the... -
Effect of slope aspect on vegetation characteristics in mountain rangelands of Tajikistan: considerations for future ecological management and restoration
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mounir Louhaichi --- , Tunisia Rajabov Toshpulot --- , Uzbekistan Hloniphani Peter Moyo --- , Jordan Azaiez Ouled Belgacem --- , Kingdom of Saudi ArabiaTajikistan’s rangelands are mostly mountainous and consist of summer and winter pastures. Vegetation structure and composition in these diverse landscapes are generally influenced by environmental factors. The objective of this study was to assess the effects of aspect on vegetation... -
Natural recolonisation of sub-Antarctic Marion Island by Common Diving Petrels Pelecanoides urinatrix
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Maëlle Connan --- Marine Apex Predator Research Unit (MAPRU), Institute for Coastal and Marine Research, Nelson Mandela University, South Africa Stefan Schoombie --- Marine Apex Predator Research Unit (MAPRU), Institute for Coastal and Marine Research, Nelson Mandela University, South Africa Janine Schoombie --- FitzPatrick Institute of African Ornithology, DSI-NRF Centre of Excellence, University of Cape Town, South Africa Ben Dilley --- FitzPatrick Institute of African Ornithology, DSI-NRF Centre of Excellence, University of Cape Town, South Africa Peter G Ryan --- FitzPatrick Institute of African Ornithology, DSI-NRF Centre of Excellence, University of Cape Town, South AfricaNocturnal burrow-nesting seabirds are notoriously difficult to study and can go unnoticed for years in remote areas. One of these species is the Common Diving Petrel Pelecanoides urinatrix, which has a circumpolar breeding distribution in the Southern Ocean, including at... -
An assessment of sex work in Swaziland: barriers to and opportunities for HIV prevention among sex workers
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Shalote Chipamaunga --- Faculty of Health Sciences, Centre for Health Science Education, University of the Witwatersrand, Adamson S Muula --- University of Malawi College of Medicine, Ronald Mataya --- Loma Linda University School of Public Health, USAThe HIV situation in virtually all southern African countries is a generalised epidemic. Despite the fact that almost all adult age and social groups have high HIV prevalence estimates, sex workers are disproportionally affected, with prevalence estimates higher than the... -
Expanding the prevention armamentarium portfolio: A framework for promoting HIV-Conversant Communities within a complex, adaptive epidemiological landscape
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Christopher J. Burman --- , , South Africa Marota Aphane --- , , South Africa Oliver Mtapuri --- , , South Africa Peter Delobelle --- , , South AfricaThe article describes a design journey that culminated in an HIV-Conversant Community Framework that is now being piloted in the Limpopo Province of South Africa. The objective of the initiative is to reduce the aggregate community viral load by building... -
The convergence of HIV/AIDS and customary tenure on women's access to land in rural Malawi
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Naomi Tschirhart --- , , Canada Lucky Kabanga --- , , Malawi Sue Nichols --- , , CanadaThis paper examines the convergence of HIV/AIDS and the social processes through which women access customary land in rural Malawi. Data were collected from focus group discussions with women in patrilineal and matrilineal communities. Women's land tenure is primarily determined... -
A workplace intervention program and the increase in HIV knowledge, perceived accessibility and use of condoms among young factory workers in Thailand
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Aphichat Chamratrithirong --- , Thailand Kathleen Ford --- , USA Sureeporn Punpuing --- , Thailand Pramote Prasartkul --- , ThailandVulnerability to Human Immunodeficiency Virus (HIV) infection among factory workers is a global problem. This study investigated the effectiveness of an intervention to increase AIDS knowledge, perceived accessibility to condoms and condom use among young factory workers in Thailand. The... -
A critically endangered new species of Nectophrynoides (Anura: Bufonidae) from the Kihansi Gorge, Udzungwa Mountains, Tanzania
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: JohnC. Poynton --- , England KimM. Howell --- University of Dar es Salaam, Tanzania BarryT. Clarke --- , England JonC. Lovett --- University of York, EnglandA new species of the Tanzanian ovoviviparous dwarf toad Nectophrynoides is described from the Kihansi River Gorge in the Udzungwa Mountains, and a key to the genus provided. The new species, currently known only from small patches of spray-dependent wetland... -
Inter‐island variation and taxonomy of Seychelles Trachylepis
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Justin Gerlach --- University Museum of Zoology Cambridge, U.K.Skinks of the genus Trachylepis are geographically widespread and diverse. In the Seychelles islands two species are present, T. sechellensis and T. wrightii. All island populations of these two species were studied in 2000–2003 and the morphology of the populations... -
Generation glands and sexual size dimorphism in the Cape Crag Lizard, Pseudocordylus microlepidotus
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: P. le FrasN. Mouton --- University of Stellenbosch, South Africa Carmen Gagiano --- University of Stellenbosch, South Africa Beate Sachse --- University of Stellenbosch, South AfricaThe Cape Crag Lizard, Pseudocordylus microlepidotus, is unique among cordylid lizards in that generation glands are not restricted to the femoral region, but also occur on the dorsum and in the inguinal region. We analysed 274 museum specimens of P... -
The impacts of past cultivation on the reptiles in a South African grassland
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Gavin P. R. Masterson --- University of the Witwatersrand, South Africa Bryan Maritz --- University of the Witwatersrand, South Africa Darian Mackay --- University of the Witwatersrand, South Africa GrahamJ. Alexander --- University of the Witwatersrand, South AfricaHabitat transfonnation is the primary anthropogenic threat to global biodiversity. Fragmentation of reptile populations following habitat transfonnation within a landscape can lead to the extirpation of species. We investigated the effects of land-use on the species richness and abundance of... -
Small and sensitive to drought: consequences of aridifiation to the conservation of Homopus signatus signatus
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Victor J. T. Loehr --- University of the Western Cape, South Africa MargarethaD. Hofmeyr --- University of the Western Cape, South Africa BrianT. Henen --- University of the Western Cape, South AfricaSeveral climate models predict that the western Succulent Karoo in South Africa will aridi-fy. This region includes the range of the smallest tortoise, Homopus signatus signatus. Although the effects of rainfall on the physiology and ecology of H. s. signatus... -
A new gregarious species of Trachylepis (Reptilia: Sauria: Scincidae) from Lolui Island, Lake Victoria, Uganda, with a key to Ugandan Trachylepis
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Rungwe Kingdon --- Gallery Pangolin, UK Stephen Spawls --- , UKA new, distinctive gregarious species of Trachylepis is described from five specimens from Lolui Island, in Lake Victoria, Uganda, East Africa. Living in large groups on rock outcrops, it is distinguished from its congeners by differences in colour pattern and... -
Social aggregation behaviour in the North African amphisbaenian Trogonophis wiegmanni
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: José Martín --- Museo Nacional de Ciencias Naturales, Spain Nuria Polo-Cavia --- Ciudad Universitaria de Cantoblanco, Spain Adega Gonzalo --- Museo Nacional de Ciencias Naturales, Spain Pilar López --- Museo Nacional de Ciencias Naturales, Spain Emilio Civantos --- Museo Nacional de Ciencias Naturales, SpainThe ecology and behaviour of Amphisbaenians is poorly known due to their fossorial habits. However, amphisbaenians are often found under rocks where they thermoregulate, and probably engage in social interactions. We describe aggregations under rocks in a North African population... -
Distribution and conservation status of the desert rain frog Breviceps macrops
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Alan Channing --- University of the Western Cape, South Africa Kirsty Wahlberg --- University of the Western Cape, South AfricaThe desert rain frog, Breviceps macrops, is found along the greater Namaqualand coast, an area of acute conservation concern. We reconstruct the distribution of this species from museum specimens to the north and quantitative surveys in the south. In addition,... -
A new species of Cordylus (Squamata: Cordylidae) from the Marungu Plateau of south-eastern Democratic Republic of the Congo
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Eli Greenbaum --- University of Texas at El Paso, USA EdwardL. Stanley --- Richard Gilder Graduate School, American Museum of Natural History, USA Chifundera Kusamba --- Centre de Recherche en Sciences Naturelles, Lwiro, République Démocratique du, Congo WandegeM. Moninga --- Centre de Recherche en Sciences Naturelles, Lwiro, République Démocratique du, Congo StephenR. Goldberg --- Whittier College, USA CharlesR. Bursey --- , USACurrently there are 20 recognised species of the widespread lizard genus Cordylus, which is distributed throughout sub-Saharan Africa's non-forested habitats from Ethiopia to South Africa. Most recent taxonomic work has focused on forms in southern Africa, where several subspecific taxa... -
A new species of Hemidactylus (Squamata: Gekkonidae) from Príncipe Island, Gulf of Guinea, West Africa with comments on the African-Atlantic clade of Hemidactylus geckos
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: ElizabethC. Miller --- University of California, USA AnnaB. Sellas --- California Academy of Sciences, USA RobertC. Drewes --- California Academy of Sciences, USAThe remote oceanic Gulf of Guinea islands of São Tomé and Príncipe are home to a highly endemic herpetofauna, which has become the focus of modern, on-going scientific analysis only during the past decade. Until now, the endemic Hemidactylus greeffi... -
Description of the tadpoles of two Cameroonian frogs, Leptodactylodon axillaris and L. perreti (Anura: Arthroleptidae)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Deise Cruz --- California Academy of Sciences, USA AnneliseL. Dawson --- Harvard University, USA DavidC. Blackburn --- California Academy of Sciences, USAWe describe the tadpoles of two closely related frog species of the genus Leptodactylodon (family Arthroleptidae), L. axillaris and L. perreti, that are restricted to the mountains of Cameroon. Tadpoles were collected from near the type locality of each species... -
Predation on the eggs of ground-nesting birds by Dasypeltis scabra (Linnaeus, 1758) in the moist highland grasslands of South Africa
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Michael F. Bates --- , , South Africa Ian T. Little --- , South AfricaWe provide evidence for predation by the Common Egg-eater (Dasypeltis scabra) on the eggs of three species of ground-nesting birds, namely African Pipit (Anthus cinnamomeus), Cape Longclaw (Macronyx capensis) and Common Quail (Coturnix coturnix). Although egg-eaters have been recorded as... -
Restoring breeding habitat for Giant Bullfrogs (Pyxicephalus adspersus) in South Africa
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Ryan L. Thomas --- , , South Africa Lynne Owen-Smith --- , , South Africa Deanne C. Drake --- , , South Africa Graham J. Alexander --- , , South AfricaHabitat fragmentation and transformation arising from urbanisation are leading causes of frog population declines. Artificial wetlands are sometimes used in remediation to minimise biodiversity loss in urban landscapes, but little is known about the specific habitat requirements of frog species... -
Performance of goats browsing on Vachellia karroo encroached communal lands and open grasslands in the Eastern Cape province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: W Maguraushe --- University of Fort Hare, South Africa JF Mupangwa --- University of Namibia, Namibia S Washaya --- Great Zimbabwe University, Masvingo V Muchenje --- University of Fort Hare, South AfricaThe objective of this study was to evaluate the effects of season, rangeland type, and herd size on the performance of goat browsing. A total of eighty communal household goat herds from Mbashe and Nkonkobe municipalities were monitored for twelve... -
Implications of the breakdown in the indigenous knowledge system for rangeland management and policy: a case study from the Eastern Cape in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Andiswa Finca --- , South Africa Suzanne Linnane --- Dundalk Institute of Technology, Ireland Jill Slinger --- Delft University of Technology, The Netherlands David Getty --- Dundalk Institute of Technology, Ireland M Igshaan Samuels --- University of Western Cape, South AfricaCommunal rangelands in South Africa are generally perceived as overgrazed owing to complexities in their histories and collective utilisation which often leads to improper management. A suitable solution has not been found in land management policies because local people’s contexts... -
Kraals or bomas increase soil carbon and fertility across several biomes
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mia Momberg --- University of Pretoria, South Africa Anna Jean Haw --- , Kenya Perushan Rajah --- , South Africa Jacques van Rooyen --- , Kenya Heidi-Jayne Hawkins --- , South AfricaKnowledge about how pastoralism and kraaling may contribute to desired global objectives, such as soil fertility, is in danger of being lost. We tested whether short duration kraaling increases soil fertility across various biomes and countries via a meta-analysis (random... -
A balanced perspective on the contribution of extensive ruminant production to greenhouse gas emissions in southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Michiel M Scholtz --- , South Africa Frans J Jordaan --- , South Africa N Thuli Chabalala --- , South Africa Georgette M Pyoos --- , South Africa M Joel Mamabolo --- , South Africa Frederick WC Neser --- University of the Free State, South AfricaThere is a general perception that ruminants produce large quantities of greenhouse gases (GHG) which contribute to global warming. Ruminant production is also known as the world’s largest user of land, and southern Africa is no exception. Recent estimates indicate... -
Expansion of the Grassland Biome in the eastern Karoo corresponds with changes in rainfall and livestock numbers
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G Arena --- University of Cape Town, South Africa MT Hoffman --- University of Cape Town, South Africa H van der Merwe --- University of Cape Town, South Africa TG O’Connor --- , South AfricaThe persistent spread of shrublands is a global phenomenon observed across semiarid grassland-shrubland boundaries. Observations in South Africa, however, have detected a contrasting trend of increasing grass cover across the transition between the Nama-Karoo and Grassland Biomes over the last... -
Roles and responsibilities of expert clients in adolescent HIV service delivery in Eswatini: a conventional content analysis
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Charisse V Ahmed --- University of Pennsylvania School of Nursing, USA Guy Weissinger --- University of Pennsylvania School of Nursing, USA Anne M Teitelman --- University of Pennsylvania School of Nursing, USA Ndumiso Sabelo Dlamini --- University Research Co., LLC, Eswatini Nontsikelelo Patience Dlamini --- University Research Co., LLC, Eswatini Thuthukile Cebsile Dlamini --- University Research Co., LLC, Eswatini Angel Nkambule --- University Research Co., LLC, Eswatini Siphesihle Nkambule --- University Research Co., LLC, Eswatini Bridgette M Rice --- Villanova University, USA Marianne Calnan --- University Research Co., LLC, EswatiniWe aimed to elucidate the specific roles and responsibilities of expert clients in service delivery among adolescents living with HIV in Eswatini, and to provide recommendations for enhancing adolescent service provision among expert clients and similar lay health workers throughout... -
Generation Z’s perspective on restaurant service quality
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Maike Nuyken --- Wittenborg University of Applied Sciences, The Netherlands Doron Zilbershtein --- Wittenborg University of Applied Sciences, The Netherlands Abdul Rauf --- Wittenborg University of Applied Sciences, The NetherlandsWhen it comes to dining, Generation Z (Gen Z) consumers bring their own set of expectations that challenge conventional perspectives of restaurant service quality. The purpose of this research was to explore the relevance of DINESERV to the evaluation of... -
Living in a desert: examining scorpion beta diversity in Egyptian drylands from a macroecological perspective
Item type: Journal Article • Journal: African Zoology • Authors: André FA Lira --- Universidade Federal de Campina Grande, Brazil Stênio ÍA Foerster --- Institute of Ecology and Earth Sciences, University of Tartu, Estonia Ahmed Badry --- Al-Azhar University, EgyptDrylands correspond to ca. 40% of the world’s land surface. Because of their ecological importance, these areas are regularly considered for agricultural purposes. Scorpion assemblages often exhibit higher levels of species diversity in dry habitats and are beneficial indicators in... -
Wind- and eddy-driven upwelling over submarine canyons inshore of the northern Agulhas Current
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Rautenbach --- Nelson Mandela University, South Africa J Hermes --- , South Africa I Halo --- , South Africa T Morris --- , South Africa J Veitch --- , South AfricaThe iSimangaliso Wetland Park, located along the coastline of northern KwaZulu-Natal, hosts South Africa’s only subtropical coral reef system. Episodic upwelling events are observed inshore and at the heads of Diepgat, Leadsman and Leven canyons within the iSimangaliso Wetland Park... -
The effect of crop rotation and tillage practice on residue decomposition and wheat performance in the Western Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johannes Stephanus Theron --- Stellenbosch University, South Africa Gerhardus Johannes van Coller --- , South Africa Lindy Joy Rose --- Stellenbosch University, South Africa Johan Labuschagne --- Stellenbosch University, South Africa Pieter Andreas Swanepoel --- Stellenbosch University, South AfricaConservation agriculture relies on residue retention, crop rotation and reduced tillage. Crop rotation determines residue type, while tillage affects residue load and distribution. Although crop residue retention is often beneficial, residues can create challenges, including obstruction of planters during establishment... -
Ekeland, Takahashi and Caristi principles in preordered quasi-metric spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Cobzaş --- Babeş-Bolyai University, RomaniaWe prove versions of Ekeland, Takahashi and Caristi principles in pre-ordered quasi-metric spaces, the equivalence between these principles, as well as their equivalence to some completeness results for the underlying quasi-metric space. These extend the results proved in S. Cobzaş,... -
Reproduction of the Western Marsh Harrier Circus aeruginosus at the El Maleh Dam reservoir in north-western Morocco
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdeslam Rihane --- , Morocco Abdelmottalib Nahli --- Hassan II Université Casablanca, Morocco Rhimou El Hamoumi --- Hassan II Université Casablanca, Morocco Mohamed Chlaida --- Hassan II Université Casablanca, MoroccoThe reproduction of the Western Marsh Harrier Circus aeruginosus in submerged and dried up thickets of French tamarisk Tamarix gallica at El Maleh Dam reservoir, Benslimane Province, Morocco, was studied through monitoring nests in three successive years (2017–2019). Systematic field... -
Non-blow-up and blow-up results to heat equations with logarithmic nonlinearity on stratified groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ardak Kashkynbayev --- Nazarbayev University, Kazakhstan Aidyn Kassymov --- Ghent University, Belgium Durvudkhan Suragan --- Nazarbayev University, KazakhstanIn this paper, we obtain a finite-time non-blow-up result for the sub-Laplacian heat equations with logarithmic nonlinearity on stratified groups. In our proof, the logarithmic Sobolev-Folland-Stein inequality plays a key role. We also establish a blow-up result at infinite time... -
Changes in plant vegetation structure and diversity with distance from herder shelters in the Middle Atlas Mountains
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: A El Aich --- Institut Agronomique et Vétérinaire Hassan II, Morocco S Ghassan --- Institut Agronomique et Vétérinaire Hassan II, Morocco CL Alados --- Instituto Pirenaico de Ecología (CSIC), Spain S El Aayadi --- Institut Agronomique et Vétérinaire Hassan II, Morocco L Baamal --- Institut Agronomique et Vétérinaire Hassan II, MoroccoLivestock grazing intensity gradients associated with sheep holder shelters influenced the longevity of rangelands vegetation. This study aimed to examine the effects of livestock grazing pressure on vegetation structure and diversity with distance from herder shelters. Six shelters were sampled... -
Drought as a driver of vegetation change in Succulent Karoo rangelands, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: SJ Milton --- , South Africa H Petersen --- , South Africa G Nampa --- , South Africa H van der Merwe --- , South Africa JR Henschel --- , South AfricaWe document changes in rangeland during a prolonged drought in the arid Karoo. Rangeland in this arid region is species-rich and dominated by a mixture of long-lived succulent and non-succulent shrubs. Ranching has led to the domination of vegetation by... -
Relationship between sediment grain sizes and macroinvertebrate distribution along the Isiukhu River, western Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Emmanuel Mzungu --- Masinde Muliro University of Science and Technology, Kenya Anthony W Sifuna --- Masinde Muliro University of Science and Technology, Kenya William A Shivoga --- Masinde Muliro University of Science and Technology, KenyaThe current study investigated the relationship between sediment grain sizes and macroinvertebrate distribution along the Isiukhu River, a tropical stream in western Kenya. Ten sites in total were selected from the upstream, midstream and downstream areas. Sampling of sediments and... -
Nutritional quality of Calobota sericea fodders harvested at different phenological stages – opportunities for inclusion in fodder flow programs for extensive livestock farmers
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Ethan A Britz --- , South Africa Lilburne F Cyster --- University of the Western Cape, South Africa Clement F Cupido --- , South Africa M Igshaan Samuels --- , South Africa Thamsanqa DE Mpanza --- , South Africa Francuois L Müller --- , South AfricaCalobota sericea (Thunb.) Boatwr. & B.-E.van Wyk (Fabaceae) is a native legume from the semi-arid rangelands of South Africa. The species has been prioritised as a forage for water-limited agro-ecological areas. No information regarding the nutritional quality of C. sericea... -
Do native grasses emerge and establish in areas rehabilitated using vetiver grass?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lindokuhle X Dlamini --- University of KwaZulu-Natal, South Africa Michelle J Tedder --- University of KwaZulu-Natal, South Africa Kevin P Kirkman --- University of KwaZulu-Natal, South AfricaSpecies-rich grasslands provide important ecosystem services, and in South Africa, approximately 40% of these grasslands are degraded. Vetiver grass (from India) is often used during rehabilitation efforts to restore soil function without a thorough understanding of the potential negative ecological... -
Preliminary investigation into deducing breeding success of African Penguins Spheniscus demersus from automated transponder reader data to reduce disturbance
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mpumalanga Mnyekemfu --- University of the Western Cape, South Africa Peter J Barham --- University of the Western Cape, South Africa Barbara Barham --- , United Kingdom Lauren Waller --- University of the Western Cape, South Africa Katrin Ludynia --- University of the Western Cape, South Africa Gavin W Maneveldt --- University of the Western Cape, South AfricaThe Endangered African Penguin Spheniscus demersus is in serious decline, with the total population falling at a rate of ∼5% per annum. The need to carry out regular monitoring to collect demographic and phenological data to assist in the planning... -
Status and density of the threatened Kori Bustard Ardeotis kori in a woodland savanna
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kathan Bandyopadhyay --- University of Wyoming, United States Bogdan Cristescu --- , Namibia Jeffrey L Beck --- University of Wyoming, United States John L Koprowski --- University of Wyoming, United States Laurie Marker --- , NamibiaMany grassland habitats have disappeared or undergone substantial change worldwide and many obligatory grassland animal species have populations that are at risk of extinction. The Kori Bustard Ardeotis kori is the largest flying bird native to Africa and an open... -
Understanding the effects of climate change on Southern Ocean ecosystems
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CD McQuaid --- Rhodes University, South AfricaUnderstanding the future of Southern Ocean ecosystems requires approaches at micro to macro scales. The Southern Ocean has experienced both top-down and bottom-up perturbations driven by man. The removal of whales and finfish was a top-down disruption, removing enormous levels... -
The effects of habitat loss and fragmentation on the relative abundance and conservation of Ludwig’s Bustard Neotis ludwigii in South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Steven W Evans --- North-West University, South AfricaLudwig’s Bustard Neotis ludwigii is near-endemic to the semi-arid shrublands of southwestern southern Africa and is listed as Endangered. The primary threat to this species is collisions with overhead powerlines; however, loss and fragmentation of its habitat may contribute to... -
Diversity and abundance of avifauna in the Suba Forest area, central Ethiopia
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Gemechis B Mosisa --- Haramaya University, Ethiopia Nega Tassie --- Bahir Dar University, Ethiopia Sintayehu W Dejene --- Haramaya University, EthiopiaBirds are one of the best-described taxa, but detailed knowledge about most bird species in Ethiopia remains rare, which hinders the development and evaluation of conservation strategies in the region. In this study, we estimated bird species diversity and abundance... -
If COVID-19 doesn’t kill you, uber eats will: hospitality entrepreneurs’ views on online food aggregators
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Andy Erickson --- Auckland University of Technology, New ZealandEven before COVID-19 changed the world, hospitality operators were struggling to understand how to cope with the short-term benefits but potentially long-term damage to their business model of collaborating with food aggregators. The ease of accessing a well-managed customer interface... -
Effects of land use and site on organic carbon fractions in some humic soil profiles of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: --- School of Agricultural, South Africa --- School of Agricultural, South Africa --- School of Agricultural, South Africa --- School of Agricultural, South AfricaSoil organic matter (SOM) and its different carbon (C) fractions play a vital role in storing C and are a source of plant nutrients in natural and managed ecosystems. This study was conducted at six sites in KwaZulu-Natal Province to... -
Lepidoptera as a tool for the assessment of human disturbance impacting ecological and taxonomic diversity in the Choke Mountains, Ethiopia
Item type: Journal Article • Journal: African Zoology • Authors: --- Ethiopian Biodiversity Institute, Ethiopia --- University of Brescia, Italy --- University of Brescia, Italy --- University of Molise, ItalyIn tropical countries, frequent anthropogenic disturbances are primary drivers of the reduction in community diversity and local extinction of many insect taxa, including Lepidoptera. We assessed the impact of anthropogenic disturbances on lepidopteran assemblages across five different land use types... -
Grazing capacity change on a small Mediterranean-type South African offshore island following the control of invasive alien European rabbits (Oryctolagus cuniculus)
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: --- University of KwaZulu-Natal, South Africa --- University of KwaZulu-Natal, South Africa --- Stellenbosch University, South AfricaInvasive alien species (IAS) are one of the most important factors driving extinction rates worldwide. Among the IAS, the impacts of introduced mammals on native biodiversity are most severe, with the European rabbit (Oryctolagus cuniculus) being the most problematic. Globally,... -
Quantifying the effect of chemical bush control of
Senegalia mellifera on vegetation production in the Eastern Kalahari Bushveld, South AfricaItem type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: --- , South Africa --- , South Africa --- North-West University, South AfricaBush encroachment is the invasion of whole landscapes by indigenous and alien woody species. An imbalance in the ratio of grasses to bushes is a consequence of bush encroachment due to competition for moisture, nutrients and sunlight. This imbalance results... -
Secondary vegetation provides a reservoir of non-timber forest products and agroforestry service options for forestry plantation systems, Maputaland, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: AP Starke --- University of Pretoria, South Africa CJ Geldenhuys --- University of Pretoria, South Africa TG O’Connor --- University of the Witwatersrand, South Africa CS Everson --- University of KwaZulu-Natal, South AfricaTree species providing non-timber forest products (NTFPs) have the potential to enhance the socio-economic value of forestry plantation systems and mitigate biodiversity loss associated with production landscapes in Southern Africa. This can be accomplished by integrating NTFP agroforestry systems with... -
Woody biomass increases across three contrasting land uses in Hurungwe, mid-Zambezi valley, Zimbabwe
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tatenda Gotore --- , Zimbabwe Sam Bowers --- University of Edinburgh, United Kingdom Hilton GT Ndagurwa --- National University of Science and Technology, Zimbabwe Shakkie Kativu --- University of Zimbabwe, Zimbabwe Anderson Muchawona --- , Zimbabwe Pomerayi Mutete --- , Zimbabwe Mduduzi Tembani --- , Zimbabwe Ruramai Murepa --- , Zimbabwe Admore Mureva --- Bindura University of Science Education, Zimbabwe Casey Ryan --- University of the Witwatersrand, South Africa Denis Gautier --- Université Montpellier, France Laurent Gazull --- Université Montpellier, FranceGlobally, Miombo woodlands store important quantities of carbon, with tree cover and carbon stocks strongly determined by human use. We assessed woodland cover and aboveground carbon (AGC) stocks of miombo along a utilisation gradient on three different land use types,... -
Digital soil mapping enables informed decision-making to conserve soils within protected areas
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: George M van Zijl --- North-West University, South Africa Johan van Tol --- University of the Free State, South AfricaProtected areas are regarded as pristine land, but often they require rehabilitation and effective management to prevent increased land degradation. Soil management should be based on soil maps, which are difficult to create in protected areas due to their large... -
Drought release and post-drought changes in herbaceous composition and diversity in two land uses subjected to selective bush control in a semi-arid Kalahari savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: N van Staden --- North-West University, South Africa A Marquart --- North-West University, South Africa K Kellner --- North-West University, South AfricaLand degradation due to bush encroachment and drought threatens the well-being of land users and forage production in the semi-arid savannas of southern Africa. This study aimed to analyse how herbaceous vegetation in the Kalahari savanna can recover from drought,... -
Burrow site selection in the Sungazer (Smaug giganteus): a threatened South African endemic lizard
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Wade K Stanton-Jones --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South Africa Daniel JD Natusch --- Macquarie University, Australia Graham J Alexander --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South AfricaElucidating factors that drive microhabitat selection in a species is important for informing the conservation management of the species. For species that use microhabitats as long-term refuge sites, selection pressures are likely to be strong because the microhabitat must fulfil... -
New data on the clupeoids of lakes Mai-Ndombe and Tumba, western Democratic Republic of the Congo, using an integrated approach combining morphology and barcoding
Item type: Journal Article • Journal: African Zoology • Authors: Bo Delling --- , Sweden Norbert Lingopa Zanga --- Institut Supérieur de Pêche (ISPê), Congo Michael Norén --- , SwedenMorphological and molecular comparisons of clupeoid fishes in lakes Tumba and Mai-Ndombe in the Congo Basin revealed that a large-sized form of a common species in Lake Mai-Ndombe had not been distinguished from the small-sized endemic Mai-Ndombe dwarf sprat Nannothrissa... -
Zooplankton composition following an artificial mouth breaching event in Lake St Lucia, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NK Carrasco --- University of KwaZulu-Natal, South Africa S Ramdass --- University of KwaZulu-Natal, South AfricaLake St Lucia is one of the most important estuarine systems in South Africa, but the long history of anthropogenic intervention has threatened its integrity. With the exception of sporadic overtopping events and periodic marine connectivity via the uMfolozi River,... -
Experiences of a fine dining event held inside a working prison
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Alison McIntosh --- Auckland University of Technology, New Zealand Tracy Harkison --- Auckland University of Technology, New ZealandFine dining experiences offered inside working prisons are one type of hospitality initiative attempting to support prisoner rehabilitation and offer a memorable dining experience for the paying public. Previous hospitality research has not explored how fine dining delivered in a... -
The role of autonomy and competence in retaining Dutch hotel staff post-COVID-19
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sofiia Norenko --- Wittenborg University of Applied Sciences, The Netherlands Emmah Muchoki --- Wittenborg University of Applied Sciences, The Netherlands Vanessa de Oliveira Menezes --- Wittenborg University of Applied Sciences, The Netherlands René Rijnders --- Wittenborg University of Applied Sciences, The NetherlandsThis article explores potential changes in employee motivation for retention in the Dutch hotel industry after the COVID-19 pandemic, applying the self-determination theory to examine autonomy and competence. An online survey was designed and applied to 298 Dutch hotel staff... -
Identification of main variables in forest management for recovery of endemic species habitat in burned areas of southern Chile
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Roberto Moreno --- Instituto de Investigación Sistema Tierra (IISTA), Universidad de Córdoba, España Ricardo Zamora --- Universidad de Córdoba, España Norman Moreno-García --- Universidad Mayor, Chile Carlos Esse --- Instituto Iberoamericano de Desarrollo Sostenible (IIDS), Universidad Autónoma de Chile, Chile Carmen Galán --- Instituto de Investigación Sistema Tierra (IISTA), Universidad de Córdoba, España Juan Ramón Molina --- Universidad de Córdoba, EspañaWildfires are among the most serious disturbances that affect forest biodiversity, damaging both flora and fauna. In some burned areas, vegetation recovery is a long and complex process that requires the support of restorative actions. This study evaluated changes in... -
The recent fire regimes of Luengue-Luiana and Mavinga national parks, Angola
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Willem A Nieman --- , United StatesThe adjoining Luengue-Luiana and Mavinga national parks in southeastern Angola are two of the largest though least actively managed protected areas in Africa. The parks are home to a diversity of wildlife and are managed as a single unit. The... -
Grass dynamics along a woody-plant density reduction gradient in a South African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Piet Monegi --- Animal Production–Agricultural Research Council, South Africa Ntuthuko R. Mkhize --- Animal Production–Agricultural Research Council, South Africa Julius T. Tjelele --- Animal Production–Agricultural Research Council, South Africa David Ward --- Kent State University, United States Zivanai Tsvuura --- University of KwaZulu-Natal, South AfricaWoody plant encroachment threatens ecosystem services and functioning, thereby reducing herbaceous plant population persistence and community stability. We assessed the impact of woody removal intensity (WRI) on the grass ground cover, grass composition, diversity and richness, and rangeland condition in... -
Winter storms: a potential threat to African oystercatchers Haematopus moquini
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LG Underhill --- University of Cape Town, South AfricaSubstantial effort has gone into identifying threats to the African oystercatcher Haematopus moquini, a species of seabird native to the mainland coasts and offshore islands of southern Africa. Winter storms represent a possible further threat owing to the potential to... -
Long-term changes in petrel populations on Inaccessible Island, Tristan da Cunha, inferred from the diet of Brown Skuas Stercorarius antarcticus
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Peter G Ryan --- University of Cape Town, South AfricaPetrels that breed in burrows and return to their colonies after dark are among the most poorly studied seabirds. Brown Skuas Stercorarius antarcticus (family Stercorariidae) are major predators of burrowing petrels at many seabird breeding islands in the Southern Ocean,... -
Wildlife corridors in a Southern African conservation landscape: the political ecology of multispecies mobilities along the arteries of anthropogenic conservation
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Michael Bollig --- University of Cologne, GermanyThe decline of biodiversity is a key topic in public discussions around the globe. These debates have triggered massive efforts to increase protected areas and to safeguard the corridors connecting them. The wildlife corridors dealt with in this article are... -
The making, unmaking and adaptation of Mayeyi multispecies entanglements within the Kwando-Linyanti wetlands: eighteenth century to 1990
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Jessica-Jane Lavelle --- University of Cape Town, South AfricaThe Kwando-Linyanti wetlands of Namibia are known for their rivers, floodplains and woodlands with abundant wildlife and a diversity of birds and fish. Within these landscapes reside the Mayeyi, a Bantu-speaking people whose culture is closely entangled with the wetlands... -
Vegetation diversity and composition in relation to different grazing intensity levels in an arid environment in Jordan
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Salman D Al-Kofahi --- The Hashemite University, Jordan Mohammed N Sawalhah --- The Hashemite University, Jordan Ahmad E Abu Dkhineh --- , JordanGrazing practices fundamentally shape plant community composition and biodiversity worldwide, more importantly in water-limited environments. This study aimed to investigate plant community composition, species distribution of occurrence and diversity indices in an arid rangeland under different grazing intensities. The quadrat... -
Assessment of the impact of woody species encroachment on plant species diversity and the livelihood of pastoralists in southeastern Ethiopia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Abdulhakim Mahmud --- Madda Walabu University, Ethiopia Habte Telila --- Madda Walabu University, Ethiopia Lemessa Kumsa --- Adama Science and Technology University, EthiopiaThe study aimed to assess the encroachment of woody plants on the rangelands of the Dallo Manna district of Bale Zone, and their impact on plant species diversity and pastoral livelihoods. Plant data were collected from 45 plots at encroaching... -
Evolutionary relationships in the African frog family Ptychadenidae, including the first molecular analysis, range extension, and distribution modelling of the monotypic genus Lanzarana
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Tadeáš Nečas --- , Czech Republic Tomáš Mazuch --- Mendel University, Czech Republic Janis Czurda --- , Czech Republic Hassan Sh Abdirahman Elmi --- Charles University, Czech Republic Mark-Oliver Rödel --- , Germany Václav Gvoždík --- , Czech RepublicThe family Ptychadenidae contains three ecologically and morphologically distinct genera: the widespread, species-rich and above-ground dwelling Ptychadena, the less widespread and diverse, burrowing Hildebrandtia, and the little-known, burrowing, monotypic Lanzarana, endemic to Somalia. Previous morphological studies placed Lanzarana in a... -
Assessing the extent to which African wetland inventories can report to the global targets on biodiversity, including Goal A of the Global Biodiversity Framework
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MM Sadiki --- University of Pretoria, RSA H van Deventer --- University of Pretoria, RSA CD Hansen --- University of Pretoria, RSAWetlands face global threats with estimates suggesting a loss ranging from 21% to 85% of their original extent. Africa’s wetlands, covering about 4.4% of the continent, provide crucial services to millions of people and harbour significant biodiversity. This study assesses... -
A rapid fishery assessment to collect biological information and life-history parameters for rednose labeo Labeo rosae and Mozambique tilapia Oreochromis mossambicus in Loskop Dam, Olifants River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HA Hlungwani --- University of Limpopo, South Africa SM Marr --- University of Limpopo, South Africa OLF Weyl --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa AC Hoffman --- , South Africa H Botha --- University of Limpopo, South Africa JR Sara --- University of Limpopo, South AfricaA 2-week rapid fishery assessment using various sampling gears was conducted to collect life-history data on rednose labeo Labeo rosae and Mozambique tilapia Oreochromis mossambicus in Loskop Dam on the Olifants River, Mpumalanga Province, South Africa. These native species were... -
A preliminary macroinvertebrate index of biotic integrity (M-IBI) for monitoring the highland flood plain wetland ecosystems in Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Habtamu Getnet Fetene --- Asossa University, Ethiopia Seyoum Mengistou --- Addis Ababa University, Ethiopia Bikila Warkineh Dullo --- Addis Ababa University, EthiopiaAnthropogenic activities have put tremendous pressure on the natural condition of wetlands. However, few studies have used indices based on benthic invertebrates to assess the effect of these pressures on wetland ecosystems. Multi-metric indices (MMIs) have been used successfully to... -
Estimation of standing crop biomass in rangelands of the Middle Atlas mountains using remote sensing data
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: S Boukrouh --- University Mohammed VI Polytechnic (UM6P), Morocco Y Bouazzaoui --- Institut Agronomique et Vétérinaire Hassan II, Morocco A El Aich --- Institut Agronomique et Vétérinaire Hassan II, Morocco H Mahyou --- Institut National de la Recherche Agronomique, Morocco M Chikhaoui --- Institut Agronomique et Vétérinaire Hassan II, Morocco M Ait Lafkih --- Institut Agronomique et Vétérinaire Hassan II, Morocco O N’Dorma --- Institut Agronomique et Vétérinaire Hassan II, Morocco CL Alados --- Instituto Pirenaico de Ecología (CSIC), SpainIn the Middle Atlas rangelands, traditional methods for estimating standing crop biomass are labour-intensive and impractical. Remote sensing offers an initiative for standing crop biomass large-scale monitoring. The aim of this study was to estimate standing crop biomass, comprising annual... -
From forage to multifunctionality: shifting perceptions of rangeland ecosystem services in the journals of the Grassland Society of Southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Craig D Morris --- University of KwaZulu-Natal, South AfricaRangelands offer various goods and ecosystem services (ES) besides providing forage for commercial livestock production. An analysis of research published in the journals of the Grassland Society of Southern Africa from 1966 to 2023 revealed a widening focus on different... -
Nearly six decades of grazing research published by the Grassland Society of Southern Africa: trends, recommendations and gaps
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G Arena --- , South Africa H-J Hawkins --- , South AfricaWe reviewed research on grazing in extensive rangelands published by the Grassland Society of Southern Africa’s (GSSA) flagship journal, founded in 1966. We aimed to identify and synthesise emerging themes, trends, key recommendations and research gaps. From 1966 to 2023,... -
Rethinking radical veld improvement: a sustainable approach to grazing land restoration?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: KP Kirkman --- University of KwaZulu-Natal, South AfricaRadical veld improvement (RVI), a concept explored in southern Africa during the mid to late 1900s, aimed to intensify agricultural landscapes by enhancing veld productivity by incorporating productive forage grasses or legumes, soil nutrient enrichment, or a combination of both... -
Overlooked forbs: implications for rangeland biodiversity and function in southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Sindiso Nkuna --- University of KwaZulu-Natal, South Africa Craig Morris --- University of KwaZulu-Natal, South AfricaForbs are a diverse component of grassy ecosystems, offering various vital ecosystem services while enhancing system resilience. However, herbaceous non-grass species are not routinely enumerated, nor their significance evaluated. We examined the extent to which grassland forbs have been considered... -
Historical trajectories and current perspectives on sub-Saharan wildland fire science and management in select scientific literature
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Devan Allen McGranahan --- Livestock and Range Research Laboratory, USDA Agricultural Research Service, USA Kevin P Kirkman --- Grassland Science, University of KwaZulu-Natal, South AfricaFire has long been a fixture on African landscapes to which ecosystems, wildlife and people have adapted. Not surprisingly, wildland fire science in Africa has also undergone substantial change and development. Three broad eras of wildland fire science and management... -
People and rangelands: a review of the contribution of the African Journal of Range and Forage Science to advancing knowledge on the human dimensions of African rangelands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Wayne Twine --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South AfricaThe social dimensions of rangeland systems are increasingly highlighted in international rangelands literature. This paper presents a systematic review of the African Journal of Range and Forage Science from 1966 to 2023 to evaluate its contributions to this scholarship. The... -
Spatio-temporal dynamics of anthropogenic land-use pressures on temporarily closed estuaries in South Africa: a four-decade remote sensing analysis
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B McKelvey --- Oceanographic Research Institute, South African Association for Marine Biological Research, South Africa CF MacKay --- Oceanographic Research Institute, South African Association for Marine Biological Research, South AfricaLand-cover change is the leading cause of habitat loss globally. The extent of estuarine habitat loss and land-use pressures are understudied in South Africa, particularly in the numerically dominant temporarily closed estuaries. Remote sensing techniques are effective tools for monitoring... -
Influence of physico-chemical parameters on benthic macroinvertebrate community dynamics in Isiukhu River, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Emmanuel Mzungu --- Kenya Fisheries Service (Western Region), Kenya William A Shivoga --- Masinde Muliro University of Science and Technology, Kenya Dorothy K Lukhabi --- Africa Centre of Excellence in Coastal Resilience (ACECoR), Ghana Anthony W Sifuna --- Masinde Muliro University of Science and Technology, KenyaThe current study investigated the influence of physico-chemical parameters on macroinvertebrates distribution, abundance and diversity throughout the Isiukhu River. The sampling sites were selected along the Isiukhu River based on distinct land use types at the upstream, midstream and downstream... -
Assessment of the inland wetland ecosystem types in South Africa: threats and protection
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H van Deventer --- Council for Scientific and Industrial Research (CSIR), South Africa Jeanne L Nel --- , The NetherlandsEcosystem threat status (ETS) and ecosystem protection levels (EPLs) are headline indicators that can assess freshwater ecosystems at a country-wide scale. A spatial layer of freshwater, inland wetland ecosystem types of South Africa was combined with a range of spatial... -
Antagonistic aria: vocalisations of the male slender feather-tailed leaf-toed gecko (Gekkonidae: Kolekanos plumicaudus)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Francois S Becker --- National Museum of Namibia, Ministry of Education, Arts and Culture, Namibia Pedro Vaz Pinto --- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Laboratório Associado, Universidade do Porto, Portugal Javier Lobón-Rovira --- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Laboratório Associado, Universidade do Porto, PortugalKolekanos plumicaudus is a gecko endemic to the Namib Desert in south-western Angola. It is distantly related to all other geckos in the region, except for its one congener, K. spinicaudus. There have been no scientific accounts on the social... -
Yellow-billed Kite Milvus aegyptius nesting dynamics and breeding success across a human-modified landscape
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Roger N Porter --- , William W Howells --- , Ingrid B Weiersbye --- , South Africa Ben Hoffman --- University of KwaZulu-Natal, South Africa Sean N Porter --- Oceanographic Research Institute (ORI), South AfricaAnthropogenic habitat transformation is one of the leading causes of biodiversity decline. Migratory birds, particularly many raptor species, are increasingly threatened by global environmental change. We investigated the nesting dynamics and potential determinants of breeding success in a population of... -
Ethical considerations in flamingo tourism: insights from a Dutch Caribbean resort study
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Chiara Niehorster Rheinboldt --- Hotel Management School Leeuwarden, The Netherlands Joost IJsselmuiden --- Hotel Management School Leeuwarden, The Netherlands Rodney Westerlaken --- Hotel Management School Leeuwarden, The NetherlandsThis study investigates the impact of flamingo encounters on guest satisfaction and ethical considerations at a 5-star resort in the Dutch Caribbean. Using a quantitative approach, the researchers surveyed 50 resort guests to explore perceptions of animal tourism, flamingo experiences,... -
Role of subregional cooperation towards environmental conservation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Robita Lee Robinson --- Universiti Malaya, Malaysia Angathevar Baskaran --- Universiti Malaya, Malaysia Sonia Kumari Selvarajan --- Universiti Malaya, MalaysiaThis study examines the role of subregional cooperation in advancing environmental conservation within the ASEAN framework, focusing specifically on the Indonesia-Malaysia-Thailand Growth Triangle (IMT-GT) and its institutional body, the Centre for IMT-GT Subregional Cooperation (CIMT). Through qualitative analysis based on... -
The first record of Cape Clawless Otters Aonyx capensis predating on African Penguins Spheniscus demersus
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Albert Snyman --- Southern African Foundation for the Conservation of Coastal Birds (SANCCOB), South Africa Arne Purves --- , South Africa Alison Kock --- , South Africa Mashudu H Mashau --- , South Africa Faroeshka Rodgers --- , South Africa Katrin Ludynia --- Southern African Foundation for the Conservation of Coastal Birds (SANCCOB), South AfricaThe African Penguin Spheniscus demersus, a critically endangered seabird endemic to southern Africa, faces substantial threats from terrestrial predators at its mainland colonies. Correct identification of the predator species is essential for effective conservation management. This study provides the first... -
Occurrence and persistence of Blacksmith Lapwings Vanellus armatus and Crowned Lapwings V. coronatus and their reproductive success in an urban mosaic landscape
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Feziwe Phoswa --- School of Life Sciences, University of KwaZulu-Natal, South Africa S Thobeka Gumede --- School of Life Sciences, University of KwaZulu-Natal, South Africa Colleen T Downs --- School of Life Sciences, University of KwaZulu-Natal, South AfricaUrbanised landscapes continue to expand globally, leading to increased habitat fragmentation, which creates a mosaic of natural and managed landscapes. These environmental changes have an impact on bird populations, and are reflected in the declining populations of open-habitat species. Despite... -
Behavioural responses to air temperature change in helmeted guineafowl Numida meleagris
Item type: Journal Article • Journal: African Zoology • Authors: Johann H van Niekerk --- University of South Africa, South Africa Marta Rodríguez-Rey --- Universidad de Alcalá, Forest Ecology and Restoration Research Group (FORECO), Spain Fabián Casas --- Universidad de Granada, Spain Giovanni Forcina --- Global Change Ecology and Evolution Research Group (GloCEE)/Soil Biology and Subterranean Ecosystems Research Group (GIBSES), SpainDeciphering the behavioural responses of helmeted guineafowl Numida meleagris (Linnaeus, 1758) to temperature variation is key to understanding its eco-ethology and implementing sound management strategies. Here, we tested the ‘warmer together’ hypothesis, which states that thermoregulatory cost reduction (i.e. body... -
Understanding the distribution and densities of ghost crabs (Ocypode spp.) to improve management of hawksbill turtle Eretmochelys imbricata nesting sites
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Godding --- , Seychelles S Evans --- , Seychelles M Brown --- School of Life Sciences, University of KwaZulu-Natal, South AfricaPredation on sea turtle nests is a natural occurrence at nesting beaches worldwide, with various animals consuming the eggs and hatchlings as part of the ecosystem. Cousine Island in the Seychelles Archipelago is an important nesting site for the Critically... -
Vegetation structure and defoliation patterns in heterogeneous grasslands under two herbage allowance levels
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Felipe Casalás --- University of the Republic, Uruguay Nicolas Caram --- University of the Republic, Uruguay Pablo Soca --- University of the Republic, Uruguay Marcelo Wallau --- University of Florida, USA Pablo Boggiano --- University of the Republic, UruguayUnderstanding the relationship between vegetation attributes and defoliation patterns at multiple spatiotemporal scales is crucial for optimising grazing systems. This study assessed the structural attributes of vegetation and the effects of defoliation frequency and intensity in a campos grassland under... -
Veld condition assessments are unrepresentative at the edges of rotational burn management blocks where grass community composition is atypical
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Anne E Goodenough --- School of Education and Science, University of Gloucestershire, UK William S Carpenter --- School of Education and Science, University of Gloucestershire, UK Hannah Toms --- School of Education and Science, University of Gloucestershire, UK Benjamin A Bayliss --- School of Education and Science, University of Gloucestershire, UK Chloe J Cookes --- School of Education and Science, University of Gloucestershire, UK Lena Buerger --- School of Education and Science, University of Gloucestershire, UK Chloe L Cogdell --- School of Education and Science, University of Gloucestershire, UK Sara L Evans --- School of Education and Science, University of Gloucestershire, UK Tom Lancashire --- School of Education and Science, University of Gloucestershire, UK Fern D Kenyon-Hamp --- School of Education and Science, University of Gloucestershire, UK Ruari J MacGregor --- School of Education and Science, University of Gloucestershire, UK Sarah A Morshead --- School of Education and Science, University of Gloucestershire, UK Candace M Pattison --- School of Education and Science, University of Gloucestershire, UK Eli Shrubb --- School of Education and Science, University of Gloucestershire, UK Hannah D Upshall --- School of Education and Science, University of Gloucestershire, UK Charlene R Watts --- School of Education and Science, University of Gloucestershire, UK Lynne MacTavish --- Mankwe Wildlife Reserve, South Africa Melissa Dawson --- Mankwe Wildlife Reserve, South Africa Adam G Hart --- School of Education and Science, University of Gloucestershire, UKFenced reserves provide benefits for wildlife but are vulnerable to overgrazing. Accurate veld condition assessments are essential to inform stocking density, translocation/culling interventions and burn management decisions. Here, for the first time, we test whether atypical changes in the grass... -
Using a low-cost drone to assess herbaceous biomass and quality in the Sahelian Rangeland ecosystems
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Haftay Hailu Gebremedhin --- College of Agriculture and Environmental Sciences, Haramaya University, Ethiopia Paulo Salgado --- Pôle Pastoralisme et Zones Sèches, Pôle de recherche de Hann, Senegal Cofélas Fassinou --- Pôle Pastoralisme et Zones Sèches, Pôle de recherche de Hann, Senegal Simon Taugourdeau --- Pôle Pastoralisme et Zones Sèches, Pôle de recherche de Hann, SenegalExisting ways of assessing rangeland plant biomass and nutritional quality mostly rely on field surveys, which are difficult to generalise across plots, along with laboratory-based techniques that entail lengthy pre-processing procedures. As a solution, drones have emerged as a promising... -
A baseline survey of coastal birds in the Greater Bazaruto region, Mozambique
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Peter G Ryan --- University of Cape Town, South Africa Cliff Dorse --- , South Africa Dave Gilroy --- , Mozambique James Hogg --- , United Kingdom Albert McLean --- , South Africa Christine Read --- , South Africa Evan Trotzuk --- African Parks Mozambique, Mozambique Gary Allport --- The David Attenborough Building, United KingdomWe report the numbers of coastal birds in the Greater Bazaruto Important Bird and Biodiversity Area (IBA), Mozambique. In November–December 2023, we counted waterbirds foraging on tidal flats and at roost sites in the San Sebastian (São Sebastião) Peninsula, Bazaruto... -
Diet composition of the Marsh Owl Asio capensis at the Merja Zerga coastal lagoon, northwestern Morocco
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdeslam Rihane --- Regional Center for Education and Training (CRMEF) Casablanca-Settat, Morocco Sidi Imad Cherkaoui --- Institut Scientifique, Research Center: Geophysics, Natural Patrimony and Green Chemistry (GEOPAC), MoroccoThe diet of the Marsh Owl Asio capensis (family Strigidae) was examined at Merja Zerga coastal lagoon and wetland on the Gharb Plain, northwestern Morocco. The analysis was carried out on several small batches of regurgitated pellets, collected in January... -
Thoughts of suicide and self-harm: A national study on young people presenting to non-paediatric acute hospitals in Ireland
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Katerina Kavalidou --- , Ireland James O’Mahony --- University College Cork, Ireland Sally-Ann Lovejoy --- , Ireland Fiona McNicholas --- University College Dublin, Ireland Vincent Russell --- , IrelandBackground: In Ireland, acute hospital emergency departments (ED) become the default service for youth aged 16 to 18 years; and in the absence of paediatric EDs, for youth under 16 years. No previous research has explored adolescent presentations to non-paediatric... -
Distribution and status of reptile species in south-eastern Zimbabwe
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Kurt M van Wyk --- University of the Western Cape, South Africa Bryan Maritz --- University of the Western Cape, South Africa Bruce W Clegg --- Malilangwe Trust, Malilangwe Wildlife Reserve, ZimbabweWhile the loss of biodiversity in response to anthropogenic drivers is well documented, reptiles are rarely prioritised in global conservation efforts. Although more than 20% of all reptile species are currently listed as threatened, and a growing body of evidence... -
Too cold to sing: Warbler dawn chorus affected by environmental factors in a high-elevation wetland
Item type: Journal Article • Journal: African Zoology • Authors: Toka Mosikidi --- University of the Free State, South Africa Nicholas R Friedman --- Leibniz Institute for the Study of Biodiversity Change, Germany Nicholas Le Maitre --- University of the Free State, South Africa Sandy-Lynn Steenhuisen --- University of the Free State, South Africa Vincent Ralph Clark --- University of the Free State, South Africa Kyle John Lloyd --- University of the Free State, South Africa Aliza le Roux --- University of the Free State, South AfricaMany bird species take part in a dawn chorus, the phenomenon in which the community of songbirds in a particular habitat, show a peak of vocal activity around dawn. Understanding the species-specific extrinsic factors affecting this intensive singing activity is... -
Wintering grounds under protection: population stability and conservation of migrating waders at Europa Island, western Indian Ocean
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Florinah Razafimandimby --- Université de La Réunion, France Maxime Amy --- TAAF (Terres australes et antarctiques françaises), France Matthieu Le Corre --- Université de La Réunion, FranceThe tropical western Indian Ocean islands are at the southern limit of the East Africa–West Asia Flyway, but their importance for wintering and conservation of Palearctic waders remains poorly understood. Europa Island, a remote coralline island in the southern Mozambique... -
Investigation on the foraging ecology of black crowned cranes at Lake Tana, Ethiopia, in the context of climate change impacts
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SA Zelelew --- Bahir Dar University, Ethiopia C Relton --- , South AfricaThere are significant gaps in understanding the food resources of the black crowned crane in the Lake Tana wetlands. This study examined macroinvertebrates in crane habitats, investigated the impact of rainfall on macroinvertebrates in relation to pollution tolerance, and identified... -
Unveiling Kianda: a multifaceted symbol in Luanda, Angola
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Kyeri Kim --- Hankuk University of Foreign Studies Global Campus, Republic of KoreaThis article explores how Kianda, an (un)official urban symbol of Luanda, the capital of Angola, is rooted in the cosmological worldview of residents of Luanda’s Cabo Island (Ilha do Cabo, also known as Ilha de Luanda) and how it has... -
Pastoralist knowledge and perceptions on land degradation and forage diversity loss: a case study in the Bordj Bou Arreridj semi-arid region, Algeria
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Lounis Semara --- Mohamed El Bachir El Ibrahimi University of Bordj Bou Arreridj, Algeria Sofiane Bensefia --- Mohamed El Bachir El Ibrahimi University of Bordj Bou Arreridj, Algeria Farida Belkasmi --- Mohamed El Bachir El Ibrahimi University of Bordj Bou Arreridj, Algeria Charefeddine Mouffok --- Ferhat Abbas Setif 1 University, Algeria Abdelaziz Bouzegag --- University Centre of Mila, AlgeriaThis study assessed the level of knowledge and perception of pastoralists in the Bordj Bou Arreridj zone in the semi-arid region of Algeria regarding pastureland degradation and loss of forage species diversity. Through group discussions and field surveys, 100 pastoralists... -
Pastures established on rehabilitated surface coal mined land: an assessment of forage production and implications for livestock grazing
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Emmanuel Nkosinathi Cele --- University of Pretoria, South Africa Monde Rapiya --- University of Pretoria, South Africa Wayne Sanders --- University of Pretoria, South Africa Wayne Truter --- Enterprises University of Pretoria, South AfricaCurrently, land rehabilitation best practice in South Africa is to revegetate ameliorated soil with grass mixtures. These grasses have valuable grazing potential that can deliver great benefits to livestock farmers. However, due to paucity of research and published findings, the... -
Simulated rangeland conditions and seasonal variations influence soil quality in semi-arid central South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: JDJ Marx --- University of the Free State, South Africa E Kotzé --- University of the Free State, South Africa JJ van Tol --- University of the Free State, South Africa PF Loke --- University of the Free State, South AfricaThe study examined long-term effects of rangeland conditions and seasonal variations on soil quality without confounding grazing effects. Samples were collected seasonally from good, moderate, poor, bare and cultivated rangeland conditions at soil depths of 0–10 cm and analysed for... -
Managing land use transitions to safeguard transhumance corridors in arid eastern Morocco: challenges and adaptive strategies
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Imane Hamzaoui --- Hassan II Agronomy and Veterinary Medicine Institute, Morocco Mohamed Chikhaoui --- Hassan II Agronomy and Veterinary Medicine Institute, Morocco Nicolas Faysse --- , France Mohamed Taher Sraïri --- Hassan II Agronomy and Veterinary Medicine Institute, MoroccoThe conversion of rangelands and barren lands into agricultural use destabilises fragile pastoralism. This study examines the drivers and impacts of this transformation on pastoralism in Tinghir province, Morocco, using geospatial analysis, semi-structured interviews with pastoralists, discussions with officials and... -
Invasion of Neltuma juliflora (mesquite) and its effects on soil physicochemical properties in a semi-arid rangeland of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Siviwe Odwa Malongweni --- Sol Plaatje University, South AfricaInvasive species threaten ecosystem functions in African rangelands by altering soil properties, and affecting overall health and productivity. This study compared soil physicochemical characteristics under invasive Neltuma juliflora and native Vachellia karroo across two zones (beneath tree canopy versus open... -
Mycorrhizal fungi in Acacia mearnsii plantations and native fragments of the Pampas biome, southern Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Etienne Winagraski --- Universidade Federal do Paraná, Brazil Celso Garcia Auer --- Universidade Federal do Paraná, Brazil Pedro Henrique Riboldi Monteiro --- Universidade Federal do Paraná, Brazil Antônio Rioyei Higa --- Universidade Federal do Paraná, Brazil Glaciela Kaschuk --- Universidade Federal do Paraná, BrazilBlack wattle (Acacia mearnsii) was introduced to southern Brazil in the 1930s without any documented history of microbial inoculation. This study tested the hypothesis that black wattle introduction does not harm indigenous arbuscular mycorrhizal fungi (AMF) communities or reduce soil... -
Reduced Blue Crane Grus paradisea breeding productivity in intensive agricultural landscapes
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Christie A Craig --- FitzPatrick Institute of African Ornithology, Department of Biological Sciences, University of Cape Town, South Africa Bradley K Gibbons --- African Crane Conservation Programme, Endangered Wildlife Trust/International Crane Foundation, South Africa Tanya Smith --- African Crane Conservation Programme, Endangered Wildlife Trust/International Crane Foundation, South Africa Glenn I Ramke --- African Crane Conservation Programme, Endangered Wildlife Trust/International Crane Foundation, South Africa Peter G Ryan --- FitzPatrick Institute of African Ornithology, Department of Biological Sciences, University of Cape Town, South AfricaWe compare Blue Crane Grus paradisea breeding productivity in the Western Cape wheatlands in Overberg and Swartland (2018–2021), Karoo (2009–2011) and eastern grasslands (2009–2011 and 2013). Productivity was higher in the grasslands (0.95 fledglings/attempt, 95% CI = 0.86–1.30, n =... -
The grazing paradox: assessing contradictions of continuous versus rotational grazing systems in southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Katharina Meyer --- Institute of Plant Science and Microbiology, University of Hamburg, Germany Ute Schmiedel --- Institute of Plant Science and Microbiology, University of Hamburg, GermanyUnsustainable grazing practices result in degradation of arid and semiarid rangelands in southern Africa. Continuous grazing systems are often blamed for degradation, while rotational grazing systems are seen as more sustainable. The discussion about the impact of these grazing practices... -
Effects of grazing regimes on ground-dwelling small mammal distribution and abundance in rangelands at Gravelotte, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AW Bio Keri --- The Regional Post-Graduate Training School on Integrated Management of Tropical Forests and Lands (ERAIFT), University of Kinshasa, Democratic Republic of the Congo J De Groot --- Southern African Wildlife College, South Africa PM Hamming --- Southern African Wildlife College, South Africa S Ntie --- Université des Sciences et Techniques de Masuku (USTM), Gabon SGA Nago --- Université de Parakou (UP), Benin EBO Ahouandjinou --- Federal University of Technology, Nigeria AJ Gardiner --- Southern African Wildlife College, South AfricaUnderstanding the impact of grazing on wildlife communities is essential for implementing sustainable grazing practices that promote biodiversity conservation. This study investigated the effects of three grazing regimes (Wildlife and Cattle Grazing, Traditional Rotational Selective Grazing, and Holistic Planned Grazing... -
‘The mountain has a story to tell’: transhumant production systems in the US Intermountain West
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Hailey Wilmer --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA Jonathan Spiess --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA Katherine D White --- Department of Ecosystem Science and Management, University of Wyoming, USA Amira Burns --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA Steven Cox --- Former Dubois Ranger District, Caribou-Targhee National Forest, USA John Derek Scasta --- Laramie Research and Extension Center, Department of Ecosystem Science and Management, University of Wyoming, USA Devan Allen McGranahan --- Livestock and Range Research Laboratory, USDA Agricultural Research Service, USA Carrie S Wilson --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA Will Munger --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA J Bret Taylor --- USDA-ARS Range Sheep Production Efficiency Research Unit, USAGrazing systems research has taken a notable social-ecological turn in response to recent debates, and integrative work is still needed to address gaps in our understanding of multiscalar dynamics in transhumant systems. Transhumance encompasses diverse cultures, ecological relationships, and traditions... -
From data to decisions: the potential of real-time precision technologies to enhance adaptive grazing management for livestock ranchers
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Justin D Derner --- USDA-Agricultural Research Service, Center for Agricultural Resources Research, Rangeland Resources and Systems Research Unit, USA J Gonzalo Irisarri --- University of Wyoming, Department of Ecosystem Science and Management, USA Edward J Raynor --- Colorado State University, AgNext, USA John P Ritten --- Colorado State University, AgNext, USA Clay A Lents --- USDA-Agricultural Research Service, Meat Animal Research Center, Livestock Biosystems Research Unit, USA Kaiyu Guan --- University of Illinois Urbana-Champaign, Agroecosystem Sustainability Center and College of Agricultural, Consumer, and Environmental Sciences, USA Bin Peng --- University of Illinois Urbana-Champaign, Agroecosystem Sustainability Center and College of Agricultural, Consumer, and Environmental Sciences, USA Lexuan Ye --- University of Illinois Urbana-Champaign, Agroecosystem Sustainability Center and College of Agricultural, Consumer, and Environmental Sciences, USA Greg Thoma --- Colorado State University, AgNext, USA Lauren M Porensky --- USDA-Agricultural Research Service, Center for Agricultural Resources Research, Rangeland Resources and Systems Research Unit, USA David J Augustine --- USDA-Agricultural Research Service, Center for Agricultural Resources Research, Rangeland Resources and Systems Research Unit, USAAdvances in on-animal sensors and remote sensing have generated vast data streams, but their impact on rancher decision-making remains limited due to fragmented and uncoordinated efforts. Integration of on-animal monitoring with remote sensing of the grazing resource base offers synergistic... -
Grazing smarter: science-based grazing strategies, not only stocking rate, determine rangeland outcomes
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Richard Fynn --- Okavango Research Institute, University of Botswana, Botswana Kevin Kirkman --- School of Agriculture and Science, University of KwaZulu-Natal, South Africa Craig Morris --- School of Agriculture and Science, University of KwaZulu-Natal, South Africa Peter Zacharias --- Consultant in Vegetation/Animal Systems, South AfricaResearch indicates a ‘crisis’ in the search for optimal grazing strategies with experimental results suggesting that stocking rate is the primary factor influencing rangeland condition and cattle performance. However, we contend that this is a spurious conclusion, inevitably conceived by... -
Transhumance within private land conservation areas: perspectives from pastoralist landowners in rural Kenya
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Simon M Thiong’o --- Centre for Events, Tourism, and Hospitality Management, Carnegie School of Sport, Leeds Beckett University, Headingley Campus, UKPastoralism in Kenya’s arid and semi-arid regions supports about 10 million indigenous people. While general studies on pastoralist livelihoods exist, limited research explores these dynamics within privately governed landscapes. This study critically examines how land tenure complexities within private land... -
Growth potential and productivity of the green macroalgae Ulva reticulata in a sustainable farming system in a coastal lagoon at Bambous Virieux, Mauritius
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Nazurally --- Department of Agricultural and Food Science, University of Mauritius, Mauritius D Beehary-Panray --- Environmental Protection and Conservation Organisation (EPCO), Resilient Island Endeavour (RISE) Project, Mauritius EC Gatteschi --- Cooperazione Internazionale Sud Sud (CISS), Resilient Island Endeavour (RISE) Project, ItalyUlva reticulata is a fast-growing green macroalga with high bioremediation and economic potential. Cultivation of this seaweed at Bambous Virieux in southeast Mauritius was undertaken to evaluate its growth potential and biological feasibility in a tropical lagoon. Over a 30-day... -
Benthic macrofaunal changes in response to restoration efforts in the St Lucia estuarine lake, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PC Moloi --- School of Agriculture and Science, University of KwaZulu-Natal, South Africa GM Rishworth --- Department of Zoology, Institute for Coastal and Marine Research, Nelson Mandela University, South Africa MS Bird --- Department of Zoology, University of Johannesburg, South Africa NK Carrasco --- School of Agriculture and Science, University of KwaZulu-Natal, South AfricaThe St Lucia estuarine lake and Mfolozi River mouth on the Indian Ocean coast of South Africa were once a single, connected system but were artificially separated in 1952 to prevent siltation from the Mfolozi River catchment which risked shallowing...
