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UNEXPECTED GROWTH OF PISTIA STRATIOTES IN SANYATI GORGE, LAKE KARIBA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: R.F. du Toit --- University Lake Kariba Research Station, ZimbabweDuring early 1984, the floating plant Pistia stratiotes grew unexpectedly and very rapidly in the Sanyati Gorge of Lake Kariba. Measurements of phosphorus and nitrogen in the surface waters revealed a pattern of nutrient concentrations along the gorge that could... -
CLEANING BEHAVIOUR BETWEEN THE CICHLID FISH TILAPIA RENDALLI FENDALLI BOULENGER 1896 AND THE CYPRINID, LABEO CYLINDRICUS PETERS, 1852
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.L. Minshull --- , ZimbabweA case of interspecific cleaning behaviour is described between a cichlid host Tilapia rendalli rendalli and a Juvenile cyprinid Labeo cylindricus, in captivity. The host fish initiated the cleaning behaviour with a ‘head down’ display. -
ON THE RELATIONSHIP BETWEEN TIGERFISH AND SARDINES IN LAKE KARIBA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: B.E. Marshall --- Department of Biological Sciences, ZimbabweThere was a clear relationship in Lake Kariba between the abundance of young-of-the-year (0+) tigerfish and the sardines on which they prey. The abundant sardine population that existed before commercial fishing began accounted for the increase in tiger-fish which occurred... -
CATCH AND EFFORT IN THE LAKE KARIBA SARDINE FISHERY
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: B.E. Marshall --- Department of Biological Sciences, ZimbabweThe fishery for Limnothrissa on Lake Kariba, which produced nearly 25 000 t in 1985, is backed by a comprehensive statistical system which increases the chance of using catch and effort models to manage it. The way in which effort... -
APPARENT PREDATION OF MICROCYSTIS AERUGINOSA KüTZ. EMEND ELENKIN BY A SAPROSPIRA-LIKE BACTERIUM IN A HYPERTROPHIC LAKE (HARTBEESPOORT DAM, SOUTH AFRICA)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.J. Ashton --- , South Africa R.D. Robarts --- , South AfricaThe cyanobacterium Microcystis aeruginosa is the dominant autotroph in hypertrophic Hartbeespoort Dam, South Africa. Tn early summer (November) of 1983 and 1984 Microcystis colonies were heavily colonized by a gram-negative, spiral-shaped organism whose filaments appeared as si.ngle cells under both... -
OBSERVATIONS ON THE DISTRIBUTION, EMERGENCE AND BEHAVIOUR OF CENTRAL AFRICAN CHAOBORIDAE
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: SA Mitchell --- Unit for Limnology, South AfricaThe distribution of four species of Chaoboras over selected parts of Zimbabwe is given. The effect of temperature on the duration of the larval life cycle is discussed in relation to the generation time and the lunar periodicity of 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... -
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... -
A Comparison of the kraft pulp properties of P. elliottii and the P. elliottii x P. caribaea var. hondurensis hybrid grown in Queensland, Australia
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: T.K. Stanger --- Shaw Research Centre, South Africa M. J.P. Shaw --- Shaw Research Centre, South Africa R. Braunstein --- , South Africa D.G. Nikles --- , AustraliaThe interspecific hybrid between P. elliottii var. elliottii and P. caribaea var. hondurensis has recently been accepted for planting operationally as an alternative to P. elliottii by Sappi in South Africa. Some concerns have been expressed as to the suitability... -
Intimate Partner Violence and HIV Risk among Women in Primary Health Care Delivery Services in a South African Setting
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nancy Phaswana-Mafuya --- Human Sciences Research Council, South Africa Karl Peltzer --- Human Sciences Research Council University of Free State, South Africa Adlai Davids --- Human Sciences Research Council, South AfricaThe aim of the study is to investigate intimate partner violence (IPV) and HIV risk among antenatal care attendees at primary care health care facilities in a South African setting. A convenient sample of 984 pregnant women (mean age of... -
The Dual Space of an Asymmetric Normed Linear Space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: L.M. García-Raffi Romaguera Sanchez-PérezGiven an asymmetric normed linear space (X, q), we construct and study its dual space (X ∗ , q ∗). In particular, we show that (X ∗ , q ∗) is a biBanach semilinear space and prove that (X, q)... -
The zooplankton community of Lake Kariba in 1962/63 following impoundment of the Zambezi River
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Harding NA RaynerLake Kariba, bordered by Zambia in the north and Zimbabwe in the south, was formed following the impoundment of the the Zambezi River in 1955. Pre- and post-impoundment studies, which were undertaken on Lake Kariba by the Joint Fisheries Research... -
Prosobranch mollusc species- and size-preferences of Sargochromis codringtonii (Cichlidae) in Lake Kariba, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Brodersen MJ Chimbari H MadsenFrom the stomach contents of 28 wild-caught Sargochromis codringtonii from Lake Kariba the size and species of snails consumed were estimated from opercula found. An energetic cost/benefit ratio of the various sizes of the most frequent prey, Bellamya capillata, was... -
Filial cannibalism in the Chestnut-backed Sparrow-lark Eremopterix leucotis
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Derek Engelbrecht --- Department of Biodiversity, University of Limpopo, South AfricaCannibalism is a rare event in passerines, especially filial cannibalism. Here I report on two instances of filial cannibalism observed in the Chestnut-backed Sparrow-lark Eremopterix leucotis in the Limpopo province, South Africa. In both instances it was only the females... -
ON THE RELATIONSHIP BETWEEN TIGERFISH AND SARDINES IN LAKE KARIBA
Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: B.E. Marshall --- Department of Biological Sciences, ZimbabweThere was a clear relationship in Lake Kariba between the abundance of young-of-the-year (0+) tigerfish and the sardines on which they prey. The abundant sardine population that existed before commercial fishing began accounted for the increase in tiger-fish which occurred... -
Description of Larval Cynoglossus Zanzibarensis (Teleostei: Cynoglossidae) from the Tsitsikamma Coast, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A. D. WoodThe early development and the temporal distribution of Cynoglossus zanzibarensis larvae are described, based on specimens collected along the Tsitsikamma coast, South Africa. The yolk sac is evident in larvae of up to 3.4 mm body length (BL). There are... -
Cysts of potentially harmful dinoflagellates, with emphasis on the genus Alexandrium, in Sepetiba Bay (Brazil) during a port survey of GloBallast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: VB Juliano VMT GarciaSepetiba Bay in south-eastern Brazil has been selected as a pilot demonstration site within the Global Ballast Water Management Programme (GloBallast; IMO/PNUD/GEF). As part of the port baseline survey, a series of 43 sediment cores was taken in triplicate in... -
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... -
Cannibalistic interactions of juvenile mud crabs Scylla serrata: the effect of shelter and crab size
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: OD Mirera --- Kenya Marine and Fisheries Research Institute (KMFRI), Kenya P-O Moksnes --- University of Gothenburg, SwedenIn the culture of mud crab Scylla serrata, cannibalism is often the greatest cause of mortality. A laboratory study was conducted to compare the influence of size class differences and shelter on cannibalism and limb loss in juvenile mud crabs... -
Socio-Economic Contributions of an Indigenous Tree in Urban Areas of Southwest Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: F.D. Babalola --- Department of Forest Resources and Management, Nigeria T.I. Borokini --- National Centre for Genetic Resources and Biotechnology (NACGRAB), P.M.B. 5382, Nigeria A.O. Onefeli --- Department of Forest Resources and Management, Nigeria M. Muchie --- Institute for Economic Research on Innovation, South AfricaIndigenous trees have been discovered to be disappearing from urban areas at alarming rates, and the contributions of the existing trees are not adequately documented. Milicia excelsa is an indigenous trees species in tropical Africa and popularly known as Iroko... -
Evolutionary relationships of Slash Pine (Pinus elliottii) with its temperate and tropical relatives
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R C Schmidtling --- USDA Forest Service, SRS, USA V Hipkins --- USDA Forest Service, USAAllozymes in bud tissue and monoterpene contents in xylem oleoresin of slash pine (Pinus elliottii) were analyzed from populations across the natural distribution, as well as those from other species in the AUSTRALES pines. Allozyme diversity measures of slash pine... -
The effect of bottom heat on rooting Pinus patula and Pinus elliottii x Pinus caribaea stem cuttings in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: R.G. Mitchell --- Sappi Forests Research, South AfricaFive trials, testing the effect ofbottom heat on rooting, were set between January 1995 and December 1996 on P. patula and P. elliottii x P. caribaea cuttings as a method of improving root strike. In four out of five trials... -
Potential for genetic improvement of yield of exotic softwood tree species in Rwandan plantation forestry1
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: C P Mugunga --- , Rwanda G. van Wyk --- Department of Forest Science, Faculty of Agricultural and Forestry Sciences, South AfricaExotic softwoodtree species playamajorrole in Rwandan plantationforestry. Theyareusedto produce sawn timber used for various purposes. Pinus patula is the major commercial species. Growth and yield of this species were compared in terms of seed source variation based on two trials,... -
Influence of the origin of stem cutting, season of collection and auxin application on the vegetative propagation af African Sandalwood (Osyris lanceolata) in Tanzania
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Z. Teklehaimanot --- School of Agricultural and Forest Sciences, UK P.L. Mwang'ingo --- Tanzania Forestry Research Institute, Tanzania A.G. Mugasha --- Department of Forest Biology, Faculty of Forestry and Nature Conversation, Tanzania C.K. Ruffo --- Tanzania Tree Seed Agency, TanzaniaAn investigation into the possibility of propagating O.lanceolata through stem cutting was carried out at Tanzania Tree Seed Agency, Iringa Zone, Tanzania. The aim was to test the potential of stem cuttings in providing an alternative/supplement to the use of... -
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... -
The flexural properties of young Pinus elliottii x Pinus caribaea var. hondurensis timber from the Southern Cape and their prediction from acoustic measurements
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: CB Wessels --- Department of Forest and Wood Science, South Africa GP Dowse --- Department of Forest and Wood Science, South Africa HC Smit --- Department of Forest and Wood Science, South AfricaThe objectives of this study were to determine the bending strength and stiffness properties of young Pinus elliottii x P. caribaea var. hondurensis timber from the Southern Cape, South Africa, and to evaluate the predictability of these properties from acoustic... -
Stem biomass and volume models of selected tropical tree species in West Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: GHS Guendehou --- , Bénin A Lehtonen --- , Finland M Moudachirou --- Laboratoire de Pharmacognosie, Faculté des Sciences et Techniques, Bénin R Mäkipää --- , Finland B Sinsin --- Laboratoire d'Ecologie Appliquée, Faculté des Sciences Agronomiques, BéninEstimating tree volume and biomass constitutes an essential part of the forest resources assessment and the evaluation of the climate change mitigation potential of forests through biomass accumulation and carbon sequestration. This research article provides stem volume and biomass equations... -
Effect of weeding and fertilisation on bark thickness and stem form of seven pine species on a low-elevation site at Usutu, Swaziland
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: JW Crous --- , South Africa AR Morris --- , South Africa S Khoza --- , SwazilandOn a low-elevation site at Usutu alternative species to Pinus elliottii, the species recommended in the past for such sites, were planted to evaluate growth differences. At rotation age, destructive stem profile analyses were conducted on some of the trees... -
Sexual practices and sensual selves in Zanzibar
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Rosabelle Boswell --- Anthropology Department, South AfricaThis paper focuses on the sexuality and contemporary sensual behaviour among Zanzibari women and their use of scent in these domains. It is argued that scent forms an integral part of different life-cycle rituals which are embedded in gendered everyday... -
Tuberculosis complicating hepatitis C therapy with pegylated interferon and ribavirin: new infection in a high tuberculosis incidence area
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: T K Roestoff --- Department of Gastroenterology, Charlotte Maxeke Johannesburg Academic Hospital, T Burger --- Department of Gastroenterology, Charlotte Maxeke Johannesburg Academic Hospital, H Smith --- Department of Gastroenterology, Charlotte Maxeke Johannesburg Academic Hospital, A D Mahomed --- Department of Gastroenterology, Charlotte Maxeke Johannesburg Academic Hospital, -
Two new species of Schusteria (Acari: Oribatida: Ameronothroidea) from marine shores in southern Africa
Item type: Journal Article • Journal: African Zoology • Authors: David J. Marshall --- Department of Zoology, South Africa Philip J.A. Pugh --- British Antarctic Survey, United KingdomOribatid mites are typically terrestrial, though many species of Ameronothroidea are marine intertidal. Marine ameronothroids are cosmopolitan with genera being endemic to the Holarctic, sub-Antarctic, or equatorial Indo-Pacific and tropicalAtlantic regions. Recent collections from rocky-shores and mangroves of the subtropical... -
Two new species of ptyctimous mites (Acari: Oribatida) from Ghana
Item type: Journal Article • Journal: African Zoology • Authors: Wojciech Niedbala --- Department of Animal Taxonomy and Ecology, PolandTwelve species of ptyctimous mites (Acari: Oribatida) are recorded from Ghana for the first time. Two new species are described and illustrated: Phthiracarus bicarinatus sp. nov. and Austrophthiracarus lacunosus sp. nov. Three species are recorded from West Africa for the... -
Vagrant Subantarctic fur seal on the coast of Tanzania
Item type: Journal Article • Journal: African Zoology • Authors: G.J. Greg Hofmeyr --- Port Elizabeth Museum at Bayworld, South Africa Omar A. Amir --- Institute of Marine Sciences, TanzaniaAn immature Subantarctic fur seal was sighted on Unguja Island, Zanzibar, Tanzania, in 2008. This is the most northerly record of a vagrant of this species. The nearest breeding colony is on the Prince Edward Islands, 4500 km distant. While... -
Family variation in diameter growth and acoustic velocity in three 5‑year‑old South African‑grown Pinus elliottii×Pinus caribaea progeny trials established on three diverse sites
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Francois S Malan --- Research Division, South AfricaThis paper discusses family differences in the stiffness of young Pinus elliottii×P. caribaea wood and how these differences relate to differences in growth rate and altitude. Trees for measurement were obtained from three 5‑year‑old progeny trials established at three diverse... -
In vitro biomass accumulation of calli and root enhancement of Leucas aspera (Willed) Linn. under stress conditions
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Masilamani Sri Devi --- Department of Biotechnology, India Krishnamoorthy Vinothini --- Department of Biotechnology, India Pandian Arjun --- Department of Crop Sciences, South Africa Sudharshan Sekar --- Department of Biotechnology and Food Technology, South Africa Vuyo Mavumengwana --- Department of Biotechnology and Food Technology, South AfricaLeucas aspera is a high value medicinal plant in India, Java, Mauritius and Philippines. The effects of plant growth regulators effects on in vitro callus biomass accumulation and root enhancement were assessed using leaf and stem explants. Leaf and stem... -
Recovery of bird communities after selective logging and clear-cutting in Kibale National Park, Uganda
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Pirita Latja --- Department of Biology, Finland Geoffrey M Malinga --- Department of Biology, Finland Anu Valtonen --- Department of Biology, Finland Heikki Roininen --- Department of Biology, FinlandIn the face of the continuing destruction of tropical rainforests, a major challenge is to understand the consequences of these habitat changes for biodiversity and the time scale at which biodiversity can recover after such disturbances. In this study, we... -
The economics of the carbon sequestration potential of plantation forestry in south-western Uganda
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Isaac Kiyingi --- National Forestry Resources Research Institute, Uganda Abdi-Khalil Edriss --- Department of Agricultural and Applied Economics, Faculty of Development Studies, Malawi Alexander MR Phiri --- Department of Agricultural and Applied Economics, Faculty of Development Studies, Malawi Buyinza Mukadasi --- School of Postgraduate Studies, Uganda Susan Tumwebaze --- School of Forestry, Environment and Geographical Sciences, Uganda Hillary Agaba --- National Forestry Resources Research Institute, UgandaThis study assessed the amount of carbon stored and the economic viability of the small-scale Clean Development Mechanism (CDM) carbon offsets in Pinus caribaea and Eucalyptus grandis plantations under varying rotations. Volume equations were used to estimate carbon stocks and... -
The Archiving of Siti Binti Saad and her Engagement with the Music Industry in Shaaban Robert’s Wasifu wa Siti Binti Saad
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Imani Sanga --- Department of Creative Arts, TanzaniaThis essay discusses the representation of a Zanzibari legendary taarab female singer, Siti Binti Saad, in Shaaban Robert’s Wasifu wa Siti Binti Saad [Biography of Siti Binti Saad]. It examines the role Robert’s Wasifu plays in the archiving of Siti... -
Diet and feeding in the Cape Cobra, Naja nivea
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Inshaaf Layloo --- , , South Africa Caitlin Smith --- , , South Africa Bryan Maritz --- , , South AfricaIt is widely reported that African cobras (genus Naja) are generalist predators, but examination of formal literature yields relatively little evidence of this for most species. Here, we review the diet of cape cobras (Naja nivea) based on examination of... -
Developing a taper model for the Pinus elliottii × P. caribaea var. hondurensis hybrid in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Madeleen Algera --- Planning Department, Komatiland Forest, South Africa Christoph Kätsch --- Postgraduate Forest Programme, South Africa Paxie W Chirwa --- Postgraduate Forest Programme, South AfricaA relatively new hybrid, Pinus elliottii × P. caribaea var. hondurensis (Pexc), for which a taper model does not exist, is being planted commercially in South Africa. This study primarily focused on developing a taper model for Pexc in South... -
Knowledge and perception of Family Medicine among medical students at University of Ibadan, Nigeria
Item type: Journal Article • Journal: South African Family Practice • Authors: OE Fasola --- Department of Family Medicine, Nigeria AO Alao --- Department of Family Medicine, Nigeria BA Ibisola --- Department of Family Medicine, Nigeria AM Obimakinde --- Department of Family Medicine, Nigeria IC Odekunle --- Department of Family Medicine, NigeriaBackground: Postgraduate training in Family Medicine in Nigeria began over three decades ago, but it was not until recently that the National University Commission (NUC) made it a policy for all Nigerian universities to include undergraduate Family Medicine training in... -
Temporal effects of biocontrol processes on nutrient dynamics in a shallow lake: Case study of Lake Xini, Okavango Delta in Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CN Kurugundla --- , Botswana JC Buru --- , AustraliaLittle is known about the effects of weeds on nutrient concentration changes in aquatic environments. We examined alterations to nutrient dynamics from the biocontrol process of Salvinia molesta by the weevil Cyrtobagous salviniae in the Lake Xini of Okavango, Botswana... -
Endogenous metabolic content of the cutting positions and ndole-3-butyric acid influence rooting of Toona ciliata var. pubescens stem cuttings
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Qiangqiang Cheng --- , China Dejia Ji --- , China Xiaoyan Guo --- , China Honglang Huang --- , China Lu Zhang --- , ChinaToona ciliata var. pubescens (family Meliaceae) is an endangered species of mahogany endemic to China. It is now under Class II protection, and stem cuttings are an important means for its clonal propagation. However, the metabolic changes that occur in... -
Commercialization level and determinants of market participation of smallholder wheat farmers in northern Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Dubale Abate --- , Ethiopia Fikadu Mitiku --- , Ethiopia Rijalu Negash --- , EthiopiaWheat market participation improves the income and economic growth of many smallholder farmers in Ethiopia. Despite this, smallholder farmers are not enough to participate in the wheat market so that commercialization level is very low due to different factors. This... -
The African Bird Atlas Project: a description of the project and BirdMap data-collection protocol
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michael Brooks --- University of Cape Town, South Africa Sanjo Rose --- University of Cape Town, South Africa Res Altwegg --- University of Cape Town, South Africa Alan TK Lee --- University of Cape Town, South Africa Henk Nel --- , South Africa Ulf Ottosson --- A.P. Leventis Ornithological Research Institute, Nigeria Ernst Retief --- , South Africa Chevonne Reynolds --- University of the Witwatersrand, South Africa Peter G Ryan --- University of Cape Town, South Africa Sidney Shema --- , Kenya Talatu Tende --- A.P. Leventis Ornithological Research Institute, Nigeria Les G Underhill --- University of Cape Town, South Africa Robert L Thomson --- University of Cape Town, South AfricaThe African Bird Atlas Project (ABAP) is a citizen-science bird-monitoring programme that relies on a robust, repeatable protocol (BirdMap) and allows insights into the distributions of African birds and their conservation. The protocol involves collecting bird lists within spatial sampling... -
A new species of Running Frog, (Kassina, Anura: Hyperoliidae) from Unguja Island, Zanzibar, Tanzania
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: CharlesA. Msuya --- University of Dar es Salaam, Tanzania KimM. Howell --- University of Dar es Salaam, Tanzania Alan Channing --- University of the Western Cape, South AfricaA new species of Kassina is described from Unguja Island, Zanzibar, East Africa. It is distinguished from other species in its genus by an advertisement call that is pulsed, frequency modulated, and with a longer duration than that of K... -
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... -
Multiple solutions for a Bibarmonic elliptic equation with critical Choquard type nonlinearity
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Chunyu Lei --- Guizhou Minzu University, China Jun Lei --- Guizhou University, China Hongmin Suo --- Guizhou Minzu University, ChinaThis article concerns the following Bibarmonic elliptic equation with critical growth -
The bio-invasion and population dynamics of Cherax quadricarinatus in Zambian waters
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Eva Nambeye --- University of Zambia, Zambia Chibwe Katapa --- University of Zambia, Zambia Bernadette Chimai Mulenga --- University of Zambia, Zambia Hangoma Gordon Mudenda --- University of Zambia, Zambia Marjatta Eilitta --- , United States Michael A Rice --- University of Rhode Island, United StatesSince the 1990s, the exotic Australian redclaw crayfish, Cherax quadricarinatus, has been spreading in the Zambezi River basin in Zambia. The population structure of crayfish was determined at locations along the north shore of Lake Kariba 'near Siavonga' and the... -
Evaluation of antibacterial and antioxidant potentials of epidermal mucus of Clarias batrachus L. from freshwater bodies of India and its biochemical characterisation
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MR Patel --- Veer Narmad South Gujarat University, India JK Barot --- Veer Narmad South Gujarat University, IndiaThe epidermal mucus of fish serves as a vital line of defence against pathogens and oxidative stressors in aquatic environments. In this study, we evaluated the antibacterial and antioxidant properties of the epidermal mucus of Clarias batrachus L., commonly known... -
Revitalizing tribal economic systems through indigenous entrepreneurship: Innovations and strategies
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Anjali Chandulal Lakum --- Parul Institute of Social Work, Parul University, IndiaAmid growing global interest in sustainable and inclusive development, indigenous entrepreneurship and grassroots innovations are increasingly recognized as powerful yet underexplored pathways for community resilience. This study investigates how such innovations contribute to the revitalization of tribal economic systems, with... -
Uphicothonzulu ngokwenkcazobungcali yenkcubekontlalo ngokobuhlanga kwibali elifutshane lesiXhosa elithi Umgcini-mangcwaba
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Mlamli Diko --- University of South Africa (UNISA),Iiyantlukwano ngokobuhlanga kunye nocalucalulo zibonisa ukunyathelela phezulu, nto leyo ethi ithintele ubumbano nentsebenziswano phakathi kweentlanga ngeentlanga kwintlalo nenkcubeko yoMzantsi Afrika. Nakubeni umgaqonkqubo wocalucalulo wabhangiswa ngomnyaka we1994, abaNtsundu kunye namaNgesi abonakalisa ukungqubana nokujongana ngezikhondo zamehlo kwiimeko ezithile njengoko kuvela kwibali elifutshane...