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Field Performance of Micropropagated and Macropropagated Eucalyptus Hybrids
Item type: Journal Article • Journal: South African Forestry Journal • Authors: M.P. Watt --- Department of Biology, South Africa E.A. Duncan --- Department of Biology, South Africa M. Ing --- Department of Biology, South Africa F.C. Blakeway --- Department of Biology, South Africa B. Herman --- Department of Biology, South AfricaPlantlets derived, via both in vitro micropropagation and from rooted cuttings, from seven different Eucalyptus hybrid genotypes were assessed for their field performance in Kwambonambi, KwaZulu Natal. Tree survival, height, mean annual increment, diameter at breast height and size uniformity... -
Die rol van koolhidraatreserwes by kwekeryprestasie van appelhardehoutsteggies
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. J.C. Stassen --- ,Sterk eenjarige winterlote van 'n tien-jaar-oue Merton-793-moederplantasie is opgedeel in steggies van 30 cm lengte. Die basale steggie is gesny vanaf die punt van aanhegting, met die tweede en derde steggie in opeenvolgende posisies nader aan die lootpunt. Die posisie... -
Ecological factors affecting the early development of seedlings of three Acacia species from Ethiopia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. Sánchez-Bayo --- Department of Wool and Animal Science, Australia G.W. King --- Department of Wool and Animal Science, AustraliaThree Acacia species from Ethiopia, namely Acacia nubica, A. seyal and A. horrida, were tested for growth and resistance to drought during the establishment phase in glasshouse and laboratory conditions. The experiments showed that each species has different preferences for... -
Survival of Ralstonia solanacearum biovar 2 in soil under different cropping systems
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. I.M. Stander --- Department of Plant Production and Soil Science, South Africa P.S. Hammes --- Department of Plant Production and Soil Science, South Africa E.A. Beyers --- Department of Plant Production and Soil Science, South AfricaSurvival of Ralstonia solanacearum biovar 2 (race 3) was monitored in an artificially infested field over a five year period. Four cultural practices (maize monoculture, potato monoculture, bare fallow and weed-fallow) were applied. Ralstonia populations in the soil were quantified... -
Effect of microencapsulated alachlor on South African sunflower (Helianthus annuus L.) cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Soil, Crop and Climate Sciences, South Africa G.M. Ceronio --- Department of Soil, Crop and Climate Sciences, South AfricaThe microencapsulated formulation of alachlor is becoming increasingly popular for use on sunflower in South Africa, where it is registered for use at a rate of 1.54 to 1.92 kg ai ha−1. Some injury symptoms, apparently herbicide induced, have been... -
Seasonal and varietal effects on tiller population development of sugarcane (Saccharum Officinarum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Zhou --- , M.D. Shoko --- , ZimbabweTillers carry leaves, determine leaf area index and indirectly influence the amount of photosynthetically active radiation (PAR) intercepted by the sugarcane canopy. Tillers develop into stalks, the sink for the products of photosynthesis. The objective of this study was to... -
THE EFFECT OF CONSTANT TEMPERATURES ON THE HATCHING OF EGGS AND SURVIVAL OF THE FRESHWATER SNAIL BIOMPHALARIA GLABRATA (SAY)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.H. Joubert --- South African Medical Research Council and Department of Zoology, South Africa S.J. Pretorius --- South African Medical Research Council and Department of Zoology, South AfricaThe incubation period and percentage hatching of eggs of pigmented and unpigmented Biomphalaria glabrata at constant temperatures were investigated in the range 14 °C to 34 °C. In order to determine the influence of extreme temperatures on adult snails, specimens... -
SOME OBSERVATIONS ON THE FISH LIFE IN A SEASONAL SAND RIVER
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: B. C.W. van der Waal --- , , South AfricaFive fish species were collected in a seasonal sand river that had migrated upstream more than 150 km from the permanent Limpopo River. The population structure indicated that mainly juveniles had taken part in this colonisation. No fish were collected... -
Impact of goat browsing on Aloe ferox in a South African savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L Breebaart R Bhikraj TG O'ConnorThe extent and impact of the utilisation of Aloe ferox by Boer goats during winter in a South African savanna was determined using a plant-based approach. All Aloe plants rooted within the transects were eaten by goats, with small plants... -
Post establishment survival of Pinus patula in Mpumalanga, one year after planting
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J. W. CrousRecent evidence indicated that the pathogen Fusarium circinatum might be contributing significantly to post-planting mortality. Consequently, sixteen experimental sample plots, widely distributed over many localities in Mpumalanga, were established over two growing seasons to quantify the extent of pest and... -
Shoot morphology and site climate affect re-establishment success of Pinus patula in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R. G. Mitchell J. Zwolinski N. B. JonesOperational experience has indicated that Pinus patula generally survives poorly on sub-optimal growing sites in South Africa, particularly when planted as cuttings. This observation will become increasingly important as softwood species of genetically selected stock are deployed as cuttings in... -
The effects of ontogenetic maturation in Pinus patula – Part II: Hedge cycling and field performance
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R. G. Mitchell N. B. JonesEarly studies suggest that the juvenile period, during which favourable rooting can be achieved from Pinus patula seedling hedges, may be as short as 2 years from the date of sowing. If the effects of hedge maturation cannot be delayed,... -
Propagating Osyris lanceolata (African sandalwood) through air layering: Its potential and limitation in Tanzania
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: P.L. Mwang'ingo Z. Teklehaimanot L.L. Lulandala S.M. MaliondoPropagation of African sandalwood (Osyris lanceolata) by air layering (marcotting) was investigated at Sao Hill, Tanzania, aiming at providing an alternative propagation technique to the use of seeds or cuttings that germinate or root poorly. Air layers were initiated on... -
A root-bound index for evaluating planting stock quality of container-grown pines
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: D.B. South R. G. MitchellPot-binding can adversely affect the performance of container-grown stock. One factor that affects pot-binding is the size of the root system in relation to the size of the container. The aim of this study was to determine if an objective... -
Growth performance of lesser-known Leucaena species/provenances at Gairo inland plateau, Morogoro, Tanzania
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: E. Edward S.A.O. Chamshama A.G. MugashaGrowth performance and psyllid resistance was studied among nineteen lesser-known Leucaena species/provenances at Gairo inland plateau, Morogoro, Tanzania. Assessment was done at irregular intervals for survival, root collar diameter and diameter at 30 cm above the ground, height, diameter at... -
Palmer Drought Indices and Their Application to Plantation Establishment Strategies
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J.B. Zwolinski --- ,Palmer drought models are introduced as an objective measure of monthly moisture conditions and their application for forestry research is discussed. A case-study showed that Palmer Hydrological Drought Index was preferred to Palmer Drought Severity Index for deciding on establishment... -
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,... -
The survival, growth and wood basic densities of 14 year old Eucalyptus camaldulensis at Michafutene, Mozambique
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: P.A. Wate --- Centro de Experimentacao Florestal (CEF), Mozambique S. A.O. Chamshama --- Department of Forest Biology, Faculty of Forestry & Nature Conservation, Tanzania A.G. Mugasha --- Department of Forest Biology, Faculty of Forestry & Nature Conservation, TanzaniaA species and provenance trial for Eucalyptus (11 Eucalyptus camaldulensis provenances and 1 Eucalyptus tereticornis) was established at Michafutene, Mozambique in March 1982. Data on survival, growth, yield, stem characteristics and wood basic density have been analysed. Assessments were done... -
The effect of a soil-amended hydrogel on the establishment of a Eucalyptus grandis x E. camaldulensis clone grown on the sandy soils of Zululand
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: P. W.M. Viero --- , South Africa K.M. Little --- , South Africa D.G. Oscroft --- , South AfricaIn order to ensure the adequate survival of Eucalyptus grandis clonal hybrids on the sandy soils in the Zululand region of South Africa, seedlings are planted with large volumes of water (5 litres per planting pit). This results in a... -
Determinants of age at sexual debut and associated risks among South African youths
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Khangelani Zuma --- , South Africa Thembile Mzolo --- , South Africa Elias Makonko --- , South AfricaThe research uses data from a representative national survey to explore the determinants of age at sexual debut among South African youths in the age group 15–24 years. A random sample of 5 708 youths were interviewed and 92% responded... -
Influence of salinity and temperature on the larval development of the crown crab, Hymenosoma orbiculare (Crustacea: Brachyura: Hymenosomatidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Isabelle Papadopoulos BrentK Newman DaveS Schoeman TrisH WooldridgeAlthough the crab Hymenosoma orbiculare appears to complete its entire life cycle within estuaries, the salinity and temperature requirements for its successful larval development are not known. The present study therefore evaluated larval response to salinity and temperature in combination... -
The use of bitter kola Garcinia kola dry seed powder as a natural growth-promoting agent for African sharptooth catfish Clarias gariepinus fingerlings
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AA Dada --- Department of Fisheries and Aquaculture Technology, Nigeria NE Oviawe --- Department of Fisheries and Aquaculture Technology, NigeriaThe effect of dietary Garcinia kola seed meal on growth and body composition was investigated in catfish Clarias gariepinus. Fingerlings of about 50 g were fed diets supplemented with four concentrations (50, 100, 150 and 200 g kg−1) of G... -
Effect of exposure to cadmium on the tropical freshwater prawn Macrobrachium rosenbergii
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HA Kaoud --- Department of Veterinary Hygiene and Environmental Pollution, Egypt A Rezk --- Department of Veterinary Hygiene and Environmental Pollution, EgyptThe effect of cadmium (Cd) on mortality, resistance and bioaccumulation in the tropical freshwater prawn Macrobrachium rosenbergii from Egypt were studied. Survival of prawns exposed to Cd doses over 60 μg l−1 were significantly lower than that of prawns exposed... -
Survival rates in West African savanna birds
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: MattC Stevens --- School of Biology, UK Ulf Ottosson --- AP Leventis Ornithological Research Institute, Nigeria Ross McGregor --- , UK Miriam Brandt --- , Germany Will Cresswell --- School of Biology, UKDespite widespread interest in life histories and the comparison of parameters between tropical and temperate regions, there are still relatively few multispecies studies assessing annual survival in Afrotropical species. We used data from systematic mist-netting of savanna birds in Nigeria,... -
Collapse of South Africa's penguins in the early 21st century
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RJM Crawford --- Oceans and Coasts, Department of Environmental Affairs, South Africa R Altwegg --- Animal Demography Unit, South Africa BJ Barham --- , UK PJ Barham --- Animal Demography Unit, South Africa JM Durant --- Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biology, Norway BM Dyer --- Oceans and Coasts, Department of Environmental Affairs, South Africa D Geldenhuys --- , South Africa AB Makhado --- Oceans and Coasts, Department of Environmental Affairs, South Africa L Pichegru --- Percy FitzPatrick Institute of African Ornithology, South Africa PG Ryan --- Percy FitzPatrick Institute of African Ornithology, South Africa LG Underhill --- Animal Demography Unit, South Africa L Upfold --- Oceans and Coasts, Department of Environmental Affairs, South Africa J Visagie --- , South Africa LJ Waller --- Animal Demography Unit, South Africa PA Whittington --- , South AfricaThe number of African penguins Spheniscus demersus breeding in South Africa collapsed from about 56 000 pairs in 2001 to some 21 000 pairs in 2009, a loss of 35 000 pairs (>60%) in eight years. This reduced the global... -
Population dynamics of southern elephant seals: a synthesis of three decades of demographic research at Marion Island
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PA Pistorius --- Department of Zoology, South Africa PJN de Bruyn --- Department of Zoology and Entomology, University of Pretoria, South Africa MN Bester --- Department of Zoology and Entomology, University of Pretoria, South AfricaSouthern elephant seal Mirounga leonina numbers declined precipitously throughout most of their circumpolar distribution since the 1950s. A long-term intensive demographic programme was initiated in 1983 on the relatively small population of southern elephant seals at sub-Antarctic Marion Island in... -
Catch-and-release angling mortality of south-eastern Australian Pomatomus saltatrix
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MK Broadhurst --- NSW Department of Primary Industries, Fisheries Conservation Technology Unit, Australia PA Butcher --- NSW Department of Primary Industries, Fisheries Conservation Technology Unit, Australia BR Cullis --- School of Mathematics and Applied Statistics, Faculty of Informatics, AustraliaPomatomus saltatrix (Pomatomidae) is important to several recreational fisheries around the world, most of which regulate exploitation via legal size limits and quotas. However, the inherent assumption of minimal impacts to released P. saltatrix has only been tested across limited... -
The effect of a soil-amended hydrogel on the establishment of a Eucalyptus grandis clone on a sandy clay loam soil in Zululand during winter
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: P.W.M. Viero --- , South Africa K.E.A. Chiswell --- , South Africa J.M. Theron --- , South AfricaTo ensure acceptable survival and growth of Eucalyptus grandis clonal material planted in the sandy clay loam soils of the Zululand interior of South Africa, the current planting season is limited to the summer rainfall period. A field trial was... -
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... -
Effect of planting depth on growth of open-rooted Pinus elliottii and Pinus taeda seedlings in the United States
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Curtis L. VanderSchaaf --- School of Forestry and Wildlife Sciences, and Alabama Agricultural Experiment Station, USA David B. South --- School of Forestry and Wildlife Sciences, and Alabama Agricultural Experiment Station, USAThree studies in the Coastal Plain of Georgia were remeasured 7 or 8 years after planting to determine the effects of planting depth on field performance of open-rooted seedlings [root-collar diameter (RCD) ≤ 5 mm]. Average planting depth (i.e, shoot... -
The effect of applying prophylactic measures on the post-planting survival of Pinus patula in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R. G. Mitchel --- , J. Zwolinski --- Forestry Programme, N. Jones --- Forestry Programme, T. Coutinho --- Department of Microbiology and Plant Pathology,The observed survival of Pinus patula seedlings and cuttings has, on many occasions, been inadequate in nurseries and after field planting in South Africa. There have however, been several reports that survival can be improved if a fungicide is applied... -
Early growth and survival of Acacia galpinii after planting in a semi-arid environment in Zimbabwe
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: D. Mlambo --- National University of Science and Technology, Zimbabwe P. Nyathi --- National University of Science and Technology, Zimbabwe P. Milo --- National University of Science and Technology, ZimbabweAcacia galpinii grows naturally on the riverbanks and smaller drainage lines in semi-arid areas ofSouthern Africa. Trial planting of the species as a decorative tree commenced in 1993 along urban roads in Bulawayo, Zimbabwe. Early growth and survival of the... -
Air layering and its potential in propagating Uapaca kirkiana: a fruit tree from the miombo woodland, Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: PP Mwang'ingo --- , Tanzania LL Lulandala --- Faculty of Forestry and Nature Conservation, TanzaniaThe potential to propagate Uapaca kirkiana through air layering was investigated at Igumbilo forest, Tanzania. The objective was to determine the effect of time of setting air layers and use of indole-3-butyric acid (IBA) to promote rooting. Air layers were... -
Paediatric antiretroviral treatment programmes in sub-Saharan Africa: a review of published clinical studies
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Mary-Ann Davies --- Infectious Diseases Epidemiology Unit, School of Public Health and Family Medicine, South Africa Matthias Egger --- , Switzerland Olivia Keiser --- , Switzerland Andrew Boulle --- Infectious Diseases Epidemiology Unit, School of Public Health and Family Medicine, South AfricaKnowledge of the experience and outcomes of current paediatric antiretroviral treatment (ART) programmes in sub-Saharan Africa can inform new programmes in the region as well as enhance existing ones. This is urgently needed to facilitate the scale-up of treatment, which... -
The response of the diatom flora of St Lucia Lake and estuary, South Africa, to a severe drought
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GC Bate PA SmailesLake St. Lucia, South Africa's largest estuarine system, was isolated from the sea by a beach berm throughout a severe drought from 2002 to 2007, with the lake water level being extremely low over much of its total area. A... -
Effect of garlic, black seed and Biogen as immunostimulants on the growth and survival of Nile tilapia, Oreochromis niloticus (Teleostei: Cichlidae), and their response to artificial infection with Pseudomonas fluorescens
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AhmedS Diab SalahM Aly George John Yasser Abde-Hadi MohamedF MohammedThree dosage levels of black seed, garlic and commercial Biogen were administered for three months in summer and six months in winter to test their stimulation effect on growth, survival and response to challenge infection in Oreochromis niloticus. At the... -
Comparative growth performance of different Australian provenances and local land races of Grevillea robusta at Lushoto and Ubiri in the West Usambara Mountains, Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: LM Madadi --- Lushoto Silviculture Research Centre, Tanzania SC Mathias --- Lushoto Silviculture Research Centre, Tanzania WA Mugasha --- , Tanzania L Nshubemuki --- , Tanzania ST Mwihomeke --- Department of Forestry, South AfricaGrowth of seven Grevillea robusta provenances from its natural habitat in northern New South Wales and southern Queensland, Australia, and five local land races were studied at two trial sites established in November 1998 at Lushoto and Ubiri in the... -
Nest position and type affect predation rates of artificial avian nests in the tropical lowland forest on Mount Cameroon
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Eric Djomo Nana --- Department of Ecology, Faculty of Science, Czech Republic Ondřej Sedláček --- Department of Ecology, Faculty of Science, Czech Republic Jana Vokurková --- Department of Ecology, Faculty of Science, Czech Republic David Hořák --- Department of Ecology, Faculty of Science, Czech RepublicNest predation is the leading cause of reproductive failure in birds and thus it shapes their life history strategies. Intensities of nest predation appear to differ among nest locations and types in both temperate and tropical regions. However, there is... -
Effect on nursery and field performance of Pinus patula seedlings after inoculation with Fusarium circinatum
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Nicoletta B Jones --- Sappi Forests, South Africa Craig M Ford --- Sappi Forests, South Africa Marnie E Light --- Institute for Commercial Forestry Research, South Africa Ryan L Nadel --- Institute for Commercial Forestry Research, South Africa Izette Greyling --- Department of Microbiology and Plant Pathology, Tree Protection Cooperative Programme, Forestry and Agricultural Biotechnology Institute, South Africa Gerda Fourie --- Department of Microbiology and Plant Pathology, Tree Protection Cooperative Programme, Forestry and Agricultural Biotechnology Institute, South Africa Michael J Wingfield --- Department of Microbiology and Plant Pathology, Tree Protection Cooperative Programme, Forestry and Agricultural Biotechnology Institute, South Africa Andrew R Morris --- Sappi Forests, South AfricaFusarium circinatum is an important fungal pathogen of Pinus species. In South Africa, it is the most significant pathogen of Pinus patula seedlings in forestry nurseries where it presents a substantial constraint to productivity and can continue to cause mortality... -
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... -
Survival and movement of the Congo forest mouse (Deomys ferrugineus): a comparison of primary rainforest and fallow land in Kisangani, Democratic Republic of Congo
Item type: Journal Article • Journal: African Zoology • Authors: Jan Kennis --- Evolutionary Ecology Group, University of Antwerp, Belgium Crespin Laurent --- INRA, UR346 d’Epidémiologie animale, France Nicaise Drazo Amundala --- Animal Ecology and Resource Management Laboratory (LEGERA), University of Kisangani, Democratic Republic of Congo Akaibe Migimiru Dudu --- Animal Ecology and Resource Management Laboratory (LEGERA), University of Kisangani, Democratic Republic of Congo Herwig Leirs --- Evolutionary Ecology Group, University of Antwerp, BelgiumThe Congo forest mouse, Deomys ferrugineus, occurs readily in natural and human-altered habitats in the region of Kisangani (Democratic Republic of Congo). We studied survival and movement patterns of D. ferrugineus in both habitats. Capture-mark-recapture was used to study the... -
Confinement lowers fertility rate of helmeted guinea fowl (Numida meleagris) eggs
Item type: Journal Article • Journal: African Zoology • Authors: Dennis M. Kimata --- School of Biological Sciences, University of Nairobi, Kenya Richard W. Mwangi --- School of Biological Sciences, University of Nairobi, Kenya Peter M. Mathiu --- Department of Veterinary Anatomy and Physiology, KenyaGuinea fowl is a common game bird in Africa and there have been efforts to domesticate it for use as a source of human food. An important obstacle in successful domestication of guinea fowl is their low fertility rate.We studied... -
Potential density and tree survival: an analysis based on South African spacing studies
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Klaus von Gadow --- Department of Forest and Wood Science, South Africa Heyns Kotze --- Mondi, South Africa Thomas Seifert --- Department of Forest and Wood Science, South Africa Kai Staupendahl --- Argus Forstplanung, Germany Juan G Álvarez González --- University of Santiago de Compostela, SpainBecause of the high cost of maintaining a series of unthinned, densely stocked stands over long periods of time, suitable data about potential forest density and tree survival for different planting espacements are difficult to find. Direct assessment of the... -
Prolonged survival after laparoscopic splenectomy for recurrent ovarian cancer and no adjuvant therapy: a report and review of the literature
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: F Marriqoun-Harris --- The Sydney Gynaecologic Oncology Group, Sydney Cancer Centre, Royal Prince Alfred Hospital, Y J J Rhou --- The Sydney Gynaecologic Oncology Group, Sydney Cancer Centre, Royal Prince Alfred Hospital, D Storey --- The University Of Sydney, Australia S Pather --- The Sydney Gynaecologic Oncology Group, Sydney Cancer Centre, Royal Prince Alfred Hospital, -
Adjuvant treatment, tumour recurrence and the survival rate of uterine serous carcinomas: a single-institution review of 62 women
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: F Pol --- Department of Obstetrics and Gynaecology, the Netherlands D Allen --- Department of Gynaelogical Oncology, Australia R Bekkers --- Department of Obstetrics and Gynaecology, the Netherlands P Grant --- Department of Gynaelogical Oncology, Australia S Hyde --- Department of Gynaelogical Oncology, AustraliaObjectives: The aim of this study was to assess our department’s management of uterine serous carcinoma (USC) and to determine the correlation of the recurrence and survival rates of stage I-IV patients with different adjuvant treatment modalities. -
The impact of HIV infection on women receiving radiation for cervical cancer
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Mapule Mangena --- Gynaecological Oncology Unit, Department of Obstetrics and Gynaecology, Leon Snyman --- Gynaecological Oncology Unit, Department of Obstetrics and Gynaecology, Greta Dreyer --- Gynaecological Oncology Unit, Department of Obstetrics and Gynaecology, Sheynaz Bassa --- Department of Radiation Oncology, Piet Becker --- Research Office, Faculty of Health Sciences,Background: The objective of the study was to compare patient characteristics, treatment toxicity and interruptions, and survival in human immunodeficiency virus (HIV)-positive and HIV-negative cervical cancer patients receiving radiation as primary or adjuvant treatment. -
Juvenile survival and population regulation in southern elephant seals at Marion Island
Item type: Journal Article • Journal: African Zoology • Authors: P.A. Pistorius --- Mammal Research Institute, South Africa M.N. Bester --- Mammal Research Institute, South AfricaWe examined annual juvenile survival in southern elephant seals (Mirounga leonina) at Marion Island for the period 1994–1999 during which time the population was stable. Using mark–recapture models, we tested for age- and sex-specific differences in survival rates over the... -
Xenopus laevis embryos and tadpoles as models for testing for pollution by zinc, copper, lead and cadmium
Item type: Journal Article • Journal: African Zoology • Authors: Lorren K. Haywood --- Ecophysiological Studies Research Group, School of Animal, South Africa Graham J. Alexander --- Ecophysiological Studies Research Group, School of Animal, South Africa Marcus J. Byrne --- Ecophysiological Studies Research Group, School of Animal, South Africa Ewa Cukrowska --- School of Chemistry, South AfricaThe toxicity of bio available Zn, Cu, Pb, and Cd on the life stages of Xenopus laevis embryos and tadpoles was investigated. Cu and Cd were found to affect the hatching success of the embryos, with a strong negative relationship... -
Chameleons on the move: survival and movement of the Cape dwarf chameleon, Bradypodion pumilum, within a fragmented urban habitat
Item type: Journal Article • Journal: African Zoology • Authors: Krystal A. Tolley --- Applied Biodiversity Research Division, South African National Biodiversity Institute, South Africa Robert N.V. Raw --- Applied Biodiversity Research Division, South African National Biodiversity Institute, South Africa Res Altwegg --- Applied Biodiversity Research Division, South African National Biodiversity Institute, South Africa John G. Measey --- Applied Biodiversity Research Division, South African National Biodiversity Institute, South AfricaReptiles have an amazing diversity of life-history attributes ranging from the shortest- to longest-lived of vertebrate species. Estimating survival in wild populations is of key importance when understanding population dynamics and life-history evolution. However, data are lacking for a large... -
Effect of temperature on growth, survival and reproduction of Bulinus nyassanus (Smith, 1877) (Mollusca: Gastropoda) from Lake Malawi
Item type: Journal Article • Journal: African Zoology • Authors: Godfrey K. Kubirizajournal --- Department of Zoology, Faculty of Science, Uganda Henry Madsen --- Mandahl Barth Research Centre for Biodiversity and Health, DBL Centre for Health Research and Development, Faculty of Life Sciences, Denmark Jeremy S. Likongwe --- Aquaculture and Fisheries Science Department, Bunda College of Agriculture, Malawi Jay R. Stauffer Jr --- School of Forest Resources, U.S.A. Jeremiah Kang????Ombe --- Aquaculture and Fisheries Science Department, Bunda College of Agriculture, Malawi Fanuel Kapute --- Aquaculture and Fisheries Science Department, Bunda College of Agriculture, MalawiBulinus nyassanus, endemic to Lake Malawi, is an intermediate host for Schistosoma haematobium and plays an important role in transmission of this parasite along some shorelines on the Nankumba Peninsula in the southern part of the lake. Density of B... -
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... -
A case of human survival of rabies, South Africa
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Jacqueline Weyer --- Centre for Emerging and Zoonotic Diseases and Division for Public Health Surveillance and Outbreak Response, South Africa Veerle Msimang-Dermaux --- Centre for Emerging and Zoonotic Diseases and Division for Public Health Surveillance and Outbreak Response, South Africa Janusz T Paweska --- Centre for Emerging and Zoonotic Diseases and Division for Public Health Surveillance and Outbreak Response, South Africa Kevin le Roux --- Allerton Provincial Veterinary Laboratory, South Africa Premi Govender --- Provincial Department of Health KwaZulu Natal, South Africa Jessica Coertse --- Department of Microbiology and Plant Pathology, South Africa Wanda Markotter --- Department of Microbiology and Plant Pathology, South Africa Louis H Nel --- Department of Microbiology and Plant Pathology, South Africa Lucille H Blumberg --- Centre for Emerging and Zoonotic Diseases and Division for Public Health Surveillance and Outbreak Response, South AfricaHuman survival from rabies is exceptionally rare. We report a case of human survival (with severe neurological sequelae) in a child from South Africa. The patient was exposed to rabid dogs on two separate occasions and subjected to incomplete post-exposure... -
Movement patterns and survival estimates of Blue Cranes in the Western Cape
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Julia L van Velden --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South Africa Res Altwegg --- Department of Statistical Sciences, South Africa Kevin Shaw --- CapeNature, South Africa Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South AfricaThe Western Cape population of Blue Cranes Anthropoides paradiseus is the species’ largest and most stable population. How this population utilises the agricultural landscape of the Western Cape, how far individuals disperse and the connectivity between subpopulations is unknown. Basic... -
Effects of waterlogging, salinity and light on the productivity of Bruguiera gymnorrhiza and Heritiera littoralis seedlings
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MM Mangora --- Institute of Marine Sciences, University of Dar es Salaam, Tanzania MSP Mtolera --- Institute of Marine Sciences, University of Dar es Salaam, Tanzania M Björk --- Department of Ecology, Environment and Plant Sciences, SwedenThis study aimed to establish the effects of waterlogging, salinity and light on the early development of mangroves. Seedlings of Bruguiera gymnorrhiza (L.) Lamk. and Heritiera littoralis Dryand were exposed to 12 weeks of waterlogging, during which time growth and... -
A retrospective analysis of the effect of planning tumour volume on survival in cervical carcinoma
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Ilze Fourie --- Division of Radiation Oncology, Stellenbosch University, Tygerberg Academic Hospital, South Africa Hannah M Simonds --- Division of Radiation Oncology, Stellenbosch University, Tygerberg Academic Hospital, South AfricaIntroduction: Locally advanced stages of invasive cervical cancer (ICC) are associated with poor outcomes; factors influencing survival include increased tumour volume. In resource-constrained settings access to diagnostic imaging with CT and MRI is limited. Alternative methods of establishing tumour volume... -
Alternative pine hybrids and species to Pinus patula and P. radiata in South Africa and Swaziland
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Phillip Hongwane --- Technical Services, South Africa Glen Mitchell --- Kuching, Malaysia Arnulf Kanzler --- Sappi Forest Research, South Africa Steven Verryn --- Creation Breeding Innovations, South Africa Juan Lopez --- Department of Forestry and Environmental Resources, USA Paxie Chirwa --- Department of Plant and Soil Sciences, South AfricaThrough the collaborative efforts of companies affiliated with the International Program for Tree Improvement and Conservation (Camcore), a number of pine hybrids have been produced over the last decade. Many of these have been planted in trials across southern Africa... -
Effects of temporal factors, nesting microhabitat and nest position on the survival of passerine nests in a Tunisian oasis habitat
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jihen Boukhriss --- Unité de recherche «Ecologie de la faune terrestre» (UR17ES44), Faculté des Sciences de Gabès, Tunisia Slaheddine Selmi --- Département des Sciences de la Vie, Faculté des Sciences de Gabès, TunisiaIdentifying the ecological factors shaping bird nest survival is essential for understanding bird population dynamics, as well as for conservation purposes. Using data obtained by monitoring natural bird nests in one oasis in south-eastern Tunisia, we fitted logistic exposure models... -
Growth and biomass partitioning of nine provenances of Quillaja saponaria seedlings to water stress
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Carlos Magni --- Departamento de Silvicultura, Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Chile Sergio Espinoza --- Centro de Desarrollo para el Secano Interior, Facultad de Ciencias Agrarias y Forestales, Chile Paola Poch --- Departamento de Silvicultura, Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Chile Betsabé Abarca --- Departamento de Silvicultura, Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Chile Iván Grez --- Departamento de Silvicultura, Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Chile Eduardo Martínez --- Departamento de Silvicultura, Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Chile Marco Yáñez --- Núcleo Científico Multidisciplinario, Chile Rómulo Santelices --- Centro de Desarrollo para el Secano Interior, Facultad de Ciencias Agrarias y Forestales, Chile Antonio Cabrera --- Centro de Desarrollo para el Secano Interior, Facultad de Ciencias Agrarias y Forestales, ChileInformation on the morphological and physiological responses of seedlings to stressors, such as water stress, is required for successful early establishment of seedlings. We examined provenance variation in morphological and physiological traits of Quillaja saponaria Molina seeds from nine provenances... -
The impact of venous thromboembolism on the outcomes of patients with cervical carcinoma, a retrospective analysis at a single institution
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: Preyesh T Goven Shiba --- Department of Radiation Oncology, South Africa Vinay Sharma --- Department of Radiation Oncology, South AfricaBackground: Venous thromboembolism (VTE) is a frequent cause of morbidity in patients with cervical cancer. The aim of this study was to investigate the survival outcomes of patients with cervical cancer and VTE in a South African population. -
Bone involvement in patients with cervical carcinoma: a single-institution cohort study
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: JL Butt --- Department of Obstetrics and Gynaecology, Tygerberg Hospital, South Africa MH Botha --- Department of Obstetrics and Gynaecology, Tygerberg Hospital, South AfricaIntroduction: Bony metastases in cervical carcinoma are rare; however, autopsy studies indicate that they are underdiagnosed. A retrospective study was undertaken to describe the risk factors and tumour characteristics and estimate the prevalence of bone involvement in women with cervical... -
Acute toxicity and ethological responses in African catfish Clarias gariepinus juveniles to the herbicide, Ronstar®
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NS Oluah --- , Nigeria BO Mgbenka --- , NigeriaThe toxicity of the herbicide Ronstar® to Clarias gariepinus and the behavioural responses of individual fish were studied in a static renewal bioassay system. One hundred and eighty juveniles of C. gariepinus (mean weight 58.86 ± 2.46 g and mean... -
The introduction of the Chukar Partridge Alectoris chukar to southern Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Carl J Vernon --- , South Africa W Richard J Dean --- , South AfricaChukar Partridges Alectoris chukar were released at a few localities in South Africa and Zimbabwe with the aim of establishing viable populations that could contribute to a larger resource available to the ‘wing-shooting’ fraternity. Releases and introductions are poorly documented,... -
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... -
Maximal subrings of classical integral domains
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Alinaghizadeh --- Shahid Chamran University of Ahvaz, Iran A. Azarang --- Shahid Chamran University of Ahvaz, IranIt is shown that if R is an integral domain with |R| = 2ʿ, then either R has a maximal subring or R has a prime ideal P which is not a maximal ideal of R, Char(R/P) = Char(R) and... -
Effect of temperature on embryonic development and offspring performance of the African river prawn, Macrobrachium vollenhovenii
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Judith G Makombu --- University of Buea, Cameroon Cynthia A Bih --- University of Buea, Cameroon Geneva O Nkongho --- Institute of Agricultural Research for Development (IRAD), Cameroon Pius M Oben --- University of Buea, Cameroon Rollins N Ndi --- University of Buea, Cameroon Clovis N Chombe --- University of Buea, Cameroon Mercy B Verkijika --- University of Buea, Cameroon Gerry K Sonkeng --- Aquaculture Tropicale (Aqua-Tropic), Cameroon Tekou Guegang --- University of Dschang, Cameroon Janet H Brown --- Institute of Aquaculture, University of Stirling, United KingdomMacrobrachium vollenhovenii (Herklots, 1857), the largest of the indigenous West African Palaemonidae prawns, has a high potential for aquaculture. This work was carried out to assess the effect of temperature on embryonic development and offspring quality of this species. In... -
Low hypoxia tolerance in larvae of the sardine Sardinops sagax and anchovy Engraulis encrasicolus may limit their stock recovery in the northern Benguela upwelling system
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Kunzmann --- Leibniz Centre for Tropical Marine Research (ZMT), Germany RM Imam --- Leibniz Centre for Tropical Marine Research (ZMT), Germany SJ Geist --- Leibniz Centre for Tropical Marine Research (ZMT), GermanyPhysiological traits of five key fish species (Cape hake Merluccius spp., pelagic goby Sufflogobius bibarbatus, Cape horse mackerel Trachurus capensis, European anchovy Engraulis encrasicolus and sardine Sardinops sagax) from the northern Benguela upwelling system (NBUS) were compared during their larval... -
Wing-moult and seasonal occurrence of sunbirds (Nectariniidae) captured at four sites in the Eastern Cape, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Bo T Bonnevie --- Rhodes University, South Africa Adrian JFK Craig --- Rhodes University, South Africa Pat E Hulley --- Rhodes University, South Africa Albert Schultz --- , South Africa Anthony J Tree --- Rhodes University, South AfricaRinging activity in the Eastern Cape province, South Africa, spanned 30 years, with three sites active concurrently over a 14-year period, and three sites over a 6-year period. In total, in the course of 714 ringing days, in all months,... -
Silvicultural intervention during re-establishment to reduce mortality in eucalypt plantations, South Africa: early results
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ullrich Hechter --- Mondi South Africa (Pty) Ltd, South Africa Keith M Little --- School of Natural Resources Management, Nelson Mandela University, South Africa Julian Moreno Chan --- Institute for Commercial Forestry Research, South Africa Jacob Crous --- Sappi Shaw Research Centre, South AfricaHigh mortality negatively affects rotation-end yield in pulpwood eucalypt stands. Most forest companies in South Africa aim to achieve +90% survival. To ensure optimal survival, companies implement preventative measures such as the use of high-quality plants and optimum re-establishment practices,... -
Monitoring survival probabilities of Cape Vultures Gyps coprotheres in South Africa, using GPS tracking data
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sophie Pulcella --- Knowsley Safari, Prescot, United Kingdom Kerri Wolter --- Vulpro NPC, South Africa Juliana Pinto --- Vulpro NPC, South Africa Brian Kuhn --- Vulpro NPC, South Africa Wolfgang Fiedler --- Max Planck Institute of Animal Behaviour, GermanyThe Cape Vulture Gyps coprotheres is a species of Old-World vulture endemic to southern Africa. Currently listed as ‘Vulnerable’ by the IUCN, they face increasing threats from anthropogenic hazards, such as collisions with man-made infrastructure and poisoning events, leading to...