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Soil aggregate stability: The contribution of biological and physical processes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.B. Molope --- Crop production, Agriculture Department, Private Bag X2039,The roles of fungal growth, soil organic matter and particle re-orientation in soil aggregate stabilization during ageing of two British soils with different cropping histories were studied. Soils were subjected to simulated cultivation, and the subsequent changes in aggregate stability... -
Die verwantskap tussen maksimum nitrifikasietempo en relevante eienskappe van gronde vanaf die sentrale besproeiingsgebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Laubscher --- Departement van Grondkunde, Republiek van Suid-Afrika C.C. du Preez --- Departement van Grondkunde, Republiek van Suid-AfrikaDie oogmerk van die studie was om die verwantskappe tussen maksimum nitrifikasietempo (Kmaks) en relevante eienskappe van die gronde vanaf die sentrale besproeiingsgebiede uit te wys. Die verloop van nitrifikasie is in agt gronde, afkomstig van die gebiede, gemonitor na... -
Invloed van N-bemesting en rhizobiumrasse op opbrengs en N-samestelling van die saad van sojabone (Glycine max)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. D.P. Botha --- , Republiek van Suid-Afrika D.C. Pretorius --- , Republiek van Suid-Afrika R. L.J. Coetzer --- , Republiek van Suid-AfrikaDie studie is onderneem om die invloed van twee faktore, N-bemesting en atmosferiese N-binding, op opbrengs en proteïengehalte van Suid-Afrikaanse sojabone vas te stel. Drie N-misstowwe (ureum, NH4 +, NO3 −) met 15N verryk, is in 'n potproef teen 20... -
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 commercially available rhizobacteria strains on growth and production of lettuce, tomato and pepper
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K.S. Yobo --- Discipline of Plant Pathology, Republic of South Africa M.D. Laing --- Discipline of Plant Pathology, Republic of South Africa C.H. Hunter --- Discipline of Microbiology, Republic of South AfricaSeven microbial products of the genus Bacillus were evaluated under greenhouse and shadehouse conditions for efficacy on lettuce, tomato and pepper as plant growth promoters. Treatments were applied as a drench (106 cfu ml1) directly onto seedlings in composted pine... -
Progress and problems in rooting clonal Carica papaya cuttings
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Allan --- , South Africa Colleen Carlson --- , South AfricaCarica papaya (L) is one of the few fruit crops that is still propagated commercially by seed. In the cool subtropical Pietermaritzburg area, a female clone ‘Honey Gold’ has been vegetatively propagated, by rooting leafy cuttings, for over 40 years... -
FACTORS INFLUENCING VIABLE BACTERIA IN A TURBID MAN-MADE IMPOUNDMENT
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D.F. Toerien --- , South Africa 0001 D.N. Sadie --- , South Africa 0001 P. Stegmann --- , South Africa 0001The numbers of aerobic heterotrophic bacteria in the waters and sediments of the small turbid impoundment, Wuras Dam, are very high (≥100 000 ml −1 and ≥ 1x106 bacteria g−1 respectively). Viable bacterial numbers in the open water seem to... -
VIABLE HETEROTROPHIC BACTERIAL POPULATION STRUCTURE OF A TURBID MAN-MADE IMPOUNDMENT
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D.F. Toerien --- , Republic of South Africa D.N. Sadie --- , Republic of South Africa H. J.J. van Vuuren --- Department of Microbiology, Republic of South Africa R.P. Tracey --- Department of Microbiology, Republic of South AfricaSeventy one heterotrophic bacterial isolates were obtained from Wuras Dam, phenotypically characterized and clustered with the unweighted-pair group method. Three groups were obtained of which the first contained 59 members in several clusters. Overall this group was characterized by a... -
FAECAL BACTERIAL CONTAMINATION OF TROUT HATCHERY WATER EFFLUENT
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: G.R. Batchelor --- Division of Nature Conservation, South AfricaThis study was undertaken to determine the occurrence of faecal bacteria in two trout hatcheries in the Transvaal Province, South Africa. The results indicate that variations in numbers of enteric bacteria are partly caused by man-made changes to the influent... -
THE INTERRELATIONSHIPS BETWEEN THE BIOLOGICAL AND PHYSICO-CHEMICAL PARAMETERS IN THE WATER PHASE OF SESHEGO DAM, NORTHERN TRANSVAAL
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Antoinette Jooste --- Department of Zoology and Biology, South AfricaSeshego Dam, Lebowa, was investigated over a period of 15 months (1974 – 1975). The interrelationships between biological parameters such as Biological Growth Potential (BGP), anaerobic fecal and coliform bacteria, Cladocera and Copepoda were established by means of factor and... -
THE ENUMERATION OF AQUATIC BACTERIA USING DAPI
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: RichardD. Robarts --- , South Africa LynM. Sephton --- , South AfricaA comparison was made between acridine orange (AO) and 4'6-diamidino-2-phenylindole (DAPI), a highly sensitive DNA fluorescing stain, for enumerating aquatic bacteria. When water samples were processed in a darkened room and a final DAPI concentration of 0,05 μg ml −1... -
OBSERVATTVNS ON THE UNDERWATER LIGHT FIELD OF TWO HWERTROPHIC, SOUTH AFRICAN IMPOUNDMENTS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: R.D. Robarts --- , South Africa T. Zohary --- , South Africa F. Ojeda --- , Chile C. C.E. Lovengreen --- , Chile R.D. Walmsley --- ,The spectral composition of the underwater light field was examined in two hypertrophic South African Impoundments (Hartbeespoort and Roodeplaat Dams) under a range of inorganic turbidities and chlorophyll α concentrations. The data indicated that inorganic turbidity and gilvin were dominant... -
THE TEMPERATURE-GROWTH RATE RELATIONSHIPS OF AEROBIC HETEROTROPHIC BACTERIA ISOLATED FROM A SILT-LADEN IMPOUNDMENT
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D.F. Toerien --- , South AfricaThe temperature-growth rate responses of bacterial isolates from Wuras Darn, a silt-laden, highly turbid impoundment were described well by Arrhenius equations. Activation energies varied from 10, 15 to 29, 59 kcal moles−1, indicating a varied response to temperature changes. Since... -
CAROTENOID COMPOSITION AS TAXONOMIC CHARACTER FOR MICROCYSTIS ISOLATES
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: E.J. Smit G. H.J. Krüger J.N. EloffNineteen Microcystis aeruginosa isolates, a Microcystis incerta and a Synechococcus grown under constant conditions were analyzed for pigment composition. The carotenoid composition of Microcystis incerta and a Synechococcus isolate differed markedly from that of the other isolates. Although there were... -
OBSERVATIONS ON THE UNDERWATER LIGHT FIELD OF TWO HYPERTROPHIC SOUTH AFRICAN IMPOUNDMENTS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: R.D. Robarts --- National Institute for Water Research, South Africa T. Zohary --- National Institute for Water Research, South Africa F. Ojeda --- Institute of Physics, Chile C. C.E. Lovengreen --- Institute of Physics, Chile R.D. Walmsley --- Foundation for Research and Development,The spectral composition of the underwater light field was examined in two hypertrophic South African impoundments (Hartbeespoort and Roodeplaat Dams) under a range of inorganic turbidities and chlorophyll a concentrations. The data indicated that inorganic turbidity and gilvin were dominant... -
DIGESTION OF MICROCYSTIS AERUGINOSA BY OREOCHROMIS MOSSAMBICUS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: F.C. de Moor --- , South Africa W.E. Scott --- , South AfricaThe mean assimilation efficiency of aquarium acclimatized Oreochromis mossambiaue fed on a diet of Microcystis aeruginosa collected from Hartbeespoort Dam was determined as 50,8% for total organic matter, 63,7% for protein and 75,5% for phosphorus. Transmission electron microscopic examination of... -
DECOMPOSITION IN FRESHWATER ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: R.D. Robarts --- , South AfricaThis review examines the sources and composition of organic matter and the decomposition of particulate and dissolved organic matter (POM and DOM) in freshwater ecosystems. The main points to emerge from the review are listed below. -
DECOMPOSITION IN PELAGIC MARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: M.I. Lucas --- Zoology Department, South AfricaDuring the decomposition of plant detritus, complex microbial successions develop which are dominated in the early stages by a number of distinct bacterial morphotypes. The microheterotrophic community rapidly becomes heterogenous and may include cyanobacteria, fungi, yeasts and bactivorous protozoans. -
COUNTING NATURAL POPULATIONS OF MICROCYSTIS AERUGINOSA: A SIMPLE METHOD FOR COLONY DISRUPTION INTO SINGLE CELLS AND ITS EFFECT ON CELL COUNTS OF OTHER SPECIES
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Tamar Zohary --- , Arcangela M. Pais Madeira --- ,A rapid, high-speed blending method for disrupting colonies of the cyanobacterium Microcystis aeruginosa to single cells in preparation for cell counts is described. Cell counts obtained for treated samples of natural populations of M. aeruginosa from Hartbeespoort Dam did not... -
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... -
Research note: The effect of a lactic acid bacterial inoculant on the fermentation dynamics of Eragrostis curvula during ensiling
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: R. Meeske --- , Republic of South Africa H.M. Basson --- , Republic of South AfricaMaking good quality hay from Eragrostis curvula is a risky operation in many areas in South Africa due mainly to unfavourable weather conditions. Ensiling should therefore be considered as an alternative method for conserving the forage. The aim of this... -
The reliability of a field test kit for the detection and the persistence of Synergistes jonesii bacteria in the rumens of sheep through winter droughtin the Highveld of South Africa without Leucaena in the diet
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MM Masafu --- Department of Agriculture, Animal Health and Human Ecology, College of Agriculture and Environmental Sciences, South Africa MJ Linington --- Department of Agriculture, Animal Health and Human Ecology, College of Agriculture and Environmental Sciences, South AfricaThe reliability of a field test kit for the detection and the persistence of Synergistes jonesii bacteria in sheep was investigated in two trials for 12 months. The test kit consisted of a culture medium (Fe2), serum test tubes, disposable... -
Incidence of HIV-1 infection and changes in prevalence of reproductive tract infections and sexual risk behaviours: a population-based longitudinal study in rural Tanzania
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: EliaJ Mmbaga Akhtar Hussain GermanaH Leyna Elise Klouman Elisante Masenga Noel Sam KagomaS Mnyika Knut-Inge KleppThis study aimed at describing the prevalence and incidence of HIV-1 and change in the prevalence of reproductive tract infections (RTIs) and sexual risk behaviours in the rural Kilimanjaro region of Tanzania. Two cross-sectional surveys among the total village population... -
Towards the assessment of the trophic status of South African impoundments for management purposes: Bon Accord Dam
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CE van Ginkel BC Hohls E VermaakThe 1 mg/l phosphate effluent standard legislated in South Africa in 1980 in seven sensitive catchments, and ad hoc eutrophication-related requests, necessitated the monitoring of 53 impoundments throughout the country. Variables that were monitored, and are still being monitored in... -
The use of multivariate analysis as a tool to illustrate the influence of environmental variables on phytoplankton composition in the Vaal River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Sanet Janse van Vuuren AJH PieterseThe highly eutrophic Vaal River system is subjected to algal blooms that cause problems ranging from aesthetically unacceptable conditions to the release of toxins. In order to understand how environmental variables influence one another and to determine the key environmental... -
Heavy metal and faecal bacterial contamination of urban lakes in Yaoundé, Cameroon
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Demanou --- Laboratory of General Biology, Cameroon RE Brummett --- , CameroonConcentrations of faecal bacteria and heavy metals (Cr, Cd, Hg, Pb and Zn) were measured in fish, mud and water from two urban lakes in Yaoundé, Cameroon. The mean densities of faecal coliforms (FC) and faecal streptococ ci (FS) in... -
Biodiversity and extracellular enzymatic activity of heterotrophic bacterial communities in Bardawil Lagoon, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Bahgat --- Department of Botany, Faculty of Sciences, Egypt A Dewedar --- Department of Botany, Faculty of Sciences, Egypt HM Shafik --- Department of Botany, Faculty of Sciences, Egypt EE Shabana --- Department of Botany, Faculty of Sciences, EgyptThe biodiversity of heterotrophic viable bacteria (209 isolates) in the hypersaline Bardawil Lagoon, Egypt, was studied. Composition and extracellular activities of viable culturable heterotrophic bacteria (VCHB) in the water and in non-colonised and seagrass-colonised sediments of Bardawil Lagoon were determined... -
Ecological health of the Usuthu and Mbuluzi rivers in Swaziland based onselected biological indicators
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CN Magagula --- Department of Biological Sciences, Swaziland AB Mansuetus --- Department of Biological Sciences, Swaziland JO Tetteh --- Department of Biological Sciences, SwazilandBiological monitoring, using coliform bacteria and macroinvertebrate populations and diversity, was carried out monthly from August 2004 to January 2005 to determine the ecological health of the Usuthu and Mbuluzi rivers in Swaziland. Water temperature and pH were not significantly... -
Water quality status and phytoplankton composition in Soetendalvlei, Voëlvlei and Waskraalsvlei, three shallow wetlands on the Agulhas Plain, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Gordon --- Botany Department, South Africa JB Adams --- Botany Department, South Africa F Garcia-Rodriguez --- , UruguayThree wetlands on the Agulhas Plain, for which no limnological information was available, were investigated in order to provide baseline data on their present water quality and phytoplankton community structure. Physicochemical variables were assessed and phytoplankton biomass and community analyses... -
An overview of the structure and function of microbial biofilms, with special emphasis on heterotrophic aquatic microbial communities
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AW Muia --- Department of Biological Sciences, Kenya G Bretschko --- , Austria GJ Herndl --- Department of Biological Oceanography, The NetherlandsAn overview is presented of the formation, structure and development of biofilms, and of the roles and functions of heterotrophic microbial communities in streambeds, in order to stimulate interest and research in this field in Africa. Microbial biolfilms are of... -
Algae, phytoplankton and eutrophication research and management in South Africa: past, present and future
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CE van Ginkel --- , South AfricaA brief history of South African research on and management of algae-, phytoplankton- and eutrophication-related problems is presented, including their ecological, social and economic impacts, which provides a basis for formulation of future research needs. The contributions of southern African... -
Patterns of microbial activity in the shallow bottom sediments of Lake Manzala, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Bahgat --- Botany Department, Egypt FM El Fawal --- Geology Department, Egypt F Al-Misned --- Department of Zoology, College of Sciences, Saudi Arabia HA El-Serehy --- Department of Zoology, College of Sciences, Saudi Arabia S Shaheen --- Geology Department, EgyptGeneral microbial activity, determined by hydrolysis of fluoresceine diacetate (FDA), was investigated in two sediment cores collected from Manzala Lake during November 2011. FDA hydrolysis positively correlated with total bacterial counts, bacterial biomass and chlorophyll a in both cores. The... -
Antibiotic resistance among heterotrophic bacteria in Lagos Lagoon, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: OA Agwu --- Department of Biological Oceanography, NigeriaAntibiotic-resistant bacteria in the aquatic environment are considered reservoirs for drug-resistant genes. Therefore, culturable heterotrophic bacteria isolated from Lagos Lagoon surface waters between 2011 and 2012 were screened for their susceptibility to 14 commonly used antibiotics belonging to six major... -
Dynamics of a cyanobacterial bloom in a hypereutrophic reservoir, Lake Chivero, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Mhlanga --- Department of Biological Sciences, Zimbabwe W Mhlanga --- Department of Environmental Science, ZimbabweBlooming and non-blooming periods between 2004 and 2006 in a hypereutrophic reservoir, where cyanobacterial blooms have previously been reported to be permanent, presented an opportunity to characterise factors that may favour cyanobacterial dominance. As a bloom developed in May 2004,... -
Effects of water quality changes on phytoplankton and lesser flamingo Phoeniconaias minor populations at Kamfers Dam, a saline wetland near Kimberley, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LM Hill --- School of Agricultural, Forest and Environmental Sciences, USA WW Bowerman --- University of Maryland, USA JC Roos --- Water Quality Consultants, South Africa WC Bridges --- Department of Mathematical Sciences, USA MD Anderson --- BirdLife South Africa, South AfricaKamfers Dam, a wetland near Kimberley, South Africa, supports a population of Near Threatened lesser flamingos Phoeniconaias minor. The cyanobacterium Arthrospira fusiformis (Voronikhin) Komarek and Lund 1990, the flamingos’ food source, was in bloom in April 2009. The city's wastewater... -
COUNTING NATURAL POPULATIONS OF MICROCYSTIS AERUGINOSA: A SIMPLE METHOD FOR COLONY DISRUPTION INTO SINGLE CELLS AND ITS EFFECT ON CELL COUNTS OF OTHER SPECIES
Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: Tamar Zohary --- , ArcangelaM. Pais Madeira --- ,A rapid, high-speed blending method for disrupting colonies of the cyanobacterium Microcystis aeruginosa to single cells in preparation for cell counts is described. Cell counts obtained for treated samples of natural populations of M. aeruginosa from Hartbeespoort Dam did not... -
Toxic cyanobacteria in the lakes located in Rīga (the capital of Latvia) and its surroundings: present state of knowledge
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Balode I Purina S Strake S Purvina M Pfeifere I Barda K PovidisaThe intensity and toxicity of cyanobacterial blooms in lakes located near Rīga (the capital of Latvia) were investigated between 1998 and 2004. These lakes are shallow eutrophic water bodies with a high surface to depth ratio and are widely used... -
Effects of light intensity on cylindrospermopsin production in the cyanobacterial HAB species Cylindrospermopsis raciborskii
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Dyble PA Tester RW LitakerThe role of light intensity on growth and the production of the hepatotoxin cylindrospermopsin (CYN) in the cyanobacterial harmful algal bloom species Cylindrospermopsis raciborskii was investigated using cultured isolates grown in N-free media under a series of neutral density screens... -
Algicidal bacteria isolated from the surface of seaweeds from the coast of Osaka Bay in the Seto Inland Sea, Japan
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Imai D Fujimaru T Nishigaki M Kurosaki H SugitaAlgicidal bacteria offer a promising tool for the prevention of red tides, because they are able to play a key role in terminating blooms in coastal areas. This study details the detection of vast numbers of algicidal bacteria attached to... -
Phylogenetic diversity of bacteria associated with toxic and non-toxic strains of Alexandrium minutum
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Palacios B Reguera J Franco I MarínMarine planktonic dinoflagellates are usually associated with bacteria, some of which seem to have a symbiotic relation with the dinoflagellate cells. The role of bacteria in dinoflagellate life cycles is not well known and their influence on toxin production is... -
Cyanobacteria species identified in the Weija and Kpong reservoirs, Ghana, and their implications for drinking water quality with respect to microcystin
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Addico J Hardege J Komarek P Babica KAA de Graft-JohnsonThe Kpong and Weija reservoirs supply drinking water to Accra, Ghana. This study was conducted to identify the cyanobacteria present in these reservoirs and to ascertain whether current treatment processes remove whole cyanobacteria cells from the drinking water produced. Cyanotoxins... -
Some notes on the effect of wet-storage on timber
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: F.S. Malan --- Komatiland Forests Pty Ltd, AfricaThe storage of logs under water sprays has proved to be a highly effective method to preserve logs over prolonged periods against drying defects and infestation by staining fungi. Wet-storage has little effect on wood quality apart from some degradation... -
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... -
Cylindrospermopsis raciborskii, a toxic invasive cyanobacterium in South African fresh waters
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Sanet Janse van Vuuren GP KrielCylindrospermopsis raciborskii, a problem-causing cyanobacterium capable of releasing potent toxins, has become increasingly prevalent in South African freshwaters, especially in the lower reaches of the Orange River. This organism was first detected during the summer (January to March) of 2000... -
Trophic interactions amongst the plankton in the temporarily open/closed East Kleinemonde Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EL Allan PW FronemanThe trophic interactions between bacteria, phytoplankton, nanoflagellates (2–20 μm), microzooplankton (20–200 μm) and mesozooplankton (200–2 000 μm) were investigated in winter and summer in the temporarily open/closed East Kleinemonde Estuary, Eastern Cape. During winter the phytoplankton community was dominated by... -
Nitrogen uptake dynamics of a persistent cyanobacterium Cyanothece sp. bloom in Lake St Lucia, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SJ du Plooy --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa AJ Smit --- School of Life Sciences, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa DG Muir --- Department of Biology, Medgar Evers College, USAWorldwide, persistent cyanobacterial blooms are becoming more frequent and are often associated with effects of global climate change. In June 2009, a widespread bloom of the unicellular cyanobacterium, Cyanothece sp., appeared in North Lake and False Bay of Lake St... -
Tuberculosis: the implications for anaesthesia
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: TA Jackson --- University of Cape Town, JM Thomas --- Red Cross War Memorial Children's Hospital,Tuberculosis is a common problem in South Africa, and provides a number of challenges for the anaesthetist. Patients may present in a variety of ways. Constitutional and pulmonary symptoms are the most common. These may impact on fitness for surgery... -
Changes in density and composition of algal assemblages in certain unit processes of two South African water purification plants
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MGJ Oosthuizen --- Unit for Environmental Sciences and Management, South Africa S Janse van Vuuren --- Unit for Environmental Sciences and Management, South AfricaThe water purification plants at Virginia and Bothaville, South Africa, experience problems with cyanobacteria and other algae. Their algal assemblages were studied during 2010 and 2011 to determine the dominant species that may pose problems in purification. Cyanobacteria, diatoms and... -
Impact of soil amendments and weather factors on bacterial wilt and yield of two tomato cultivars in Abeokuta, Nigeria
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Akinola R Popoola --- Department of Crop Protection, Nigeria Sikiru A Ganiyu --- Department of Crop Protection, Nigeria Oluwatoyin A Babalola --- Department of Soil Science and Land Management, Nigeria Emily I Ayo-John --- Department of Crop Protection, Nigeria Ayodele A Fajinmi --- Department of Crop Protection, Nigeria Iyabo A Kehinde --- Department of Biological Sciences, Nigeria Taiwo H Adegboye --- IFSERAR, NigeriaTomato bacterial wilt, caused by Ralstonia solanacearum, leads to tomato yield losses of up to 80% in south-western Nigeria. Soil amendments and weather conditions are important in the management of the disease. Field experiments were conducted at the Research Farm... -
Microcystin-LR equivalent concentrations in fish tissue during a postbloom Microcystis exposure in Loskop Dam, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Nchabeleng --- Department of Biodiversity, South Africa P Cheng --- CSIR Natural Resources and the Environment, South Africa PJ Oberholster --- CSIR Natural Resources and the Environment, South Africa A-M Botha --- Department of Genetics, South Africa WJ Smit --- Department of Biodiversity, South Africa WJ Luus-Powell --- Department of Biodiversity, South AfricaThe effects of a decomposing cyanobacteria bloom on water quality and the accumulation of microcystin-LR equivalent toxin in fish at Loskop Dam were studied in May 2012. Enzyme-linked immunosorbent assay [ELISA] was used to confirm the presence of microcystin-LR equivalent... -
Spatio-temporal variation in density of microphytoplankton genera in two tropical coral reefs of Mauritius
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SB Sadally --- Department of Biosciences, Faculty of Science, Mauritius N Taleb-Hossenkhan --- Department of Biosciences, Faculty of Science, Mauritius R Bhagooli --- Department of Biosciences, Faculty of Science, MauritiusSpatial and temporal (seasonal and interannual) variation in microphytoplankton was investigated at two tropical coral reef sites off Mauritius (Belle Mare [BM] and Flic-en-Flac [FEF]), from 2010 to 2012. Each site was divided into three zones: coast, lagoon and reef... -
Effect of conventional and organic orchard floor management practices on enzyme activities and microbial counts in a ‘Cripp's Pink’/M7 apple orchard
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: André H Meyer --- Agricultural Research Council–Infruitec-Nietvoorbij, South Africa John Wooldridge --- Agricultural Research Council–Infruitec-Nietvoorbij, South Africa Joanna F Dames --- Department of Biochemistry and Microbiology, South AfricaOrganic (ORG) production practices are increasingly being used in South African apple orchards. Whether ORG orchard floor management practices differ in their effects on soil enzyme activities and microbial populations from conventional (CON) practices have not been adequately investigated, particularly... -
Genital tract infections in women attending sexually transmitted infection clinics in Mwanza, north-west Tanzania
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: S.N. Buhalata --- National Institute for Medical Research, Tanzania G. Kwesigabo --- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania S. Sembuche --- Tanzania Field Epidemiology and Laboratory Training Programme Ministry of Health and Social Welfare, Dar es Salaam, Tanzania S. Aboud --- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania M.M. Temu --- National Institute for Medical Research, Tanzania J.M. Changalucha --- National Institute for Medical Research, TanzaniaLack of diagnostic methods to determine a specific aetiology can contribute to an increase in genital tract infections (GTIs) in women. We determined the aetiology of, and risk factors associated with, GTIs in women with genital symptoms. After obtaining informed... -
The SASCM CRE-WG: consensus statement and working guidelines for the screening and laboratory detection of carbapenemase-producing Enterobacteriaceae
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: W Lowman --- , C Bamford C Govind K Swe Swe Han R Kularatne M Senekal A Brink P Moodley J Thomas J Smit O Perovic -
Secondary bacterial infection in active pulmonary tuberculosis
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: E Shaddock --- Division of Pulmonology, Faculty of Health Sciences, Charlotte Maxeke Johannesburg Academic Hospital University of the Witwatersrand, N Bosman --- Department of Clinical Microbiology and Infectious Diseases, Charlotte Maxeke Johannesburg Academic Hospital University of the Witwatersrand, T Nana --- Department of Clinical Microbiology and Infectious Diseases, Charlotte Maxeke Johannesburg Academic Hospital University of the Witwatersrand, C Feldman --- Division of Pulmonology, Faculty of Health Sciences, Charlotte Maxeke Johannesburg Academic Hospital University of the Witwatersrand,Patients with pulmonary tuberculosis commonly have additional pathogens cultured in sputum, i.e. so-called potentially pathogenic bacteria. The significance of these organisms is uncertain. Previously, we demonstrated that the presence of potentially pathogenic bacteria in the sputum of a group of... -
Prospecting cyanobacterial formulations as plant-growth-promoting agents for maize hybrids
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Radha Prasanna --- Division of Microbiology, India Firoz Hossain --- Division of Genetics, India Santosh Babu --- Division of Microbiology, India Ngangom Bidyarani --- Division of Microbiology, India Anurup Adak --- Division of Microbiology, India Shikha Verma --- Division of Microbiology, India Yashbir Singh Shivay --- Division of Agronomy, India Lata Nain --- Division of Microbiology, IndiaCyanobacteria represent environment-friendly inputs that can lead to savings of nitrogenous fertilisers, in addition to improving plant growth and soil fertility. The present investigation aimed to evaluate the potential of cyanobacteria inoculants as nutrient-management and plant-growth-promoting options for maize hybrids,... -
Changes in the algal composition and water quality of the Sundays River, Karoo, South Africa, from source to estuary
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Janse van Vuuren --- Unit for Environmental Sciences and Management, South Africa JC Taylor --- Unit for Environmental Sciences and Management, South AfricaA first survey was done on algae present in the Sundays River from its source to its confluence with the sea. Species found in the upstream sections of the river included indicators of good water quality, but the quality deteriorated... -
COLISTIN: adult and paediatric guideline for South Africa, 2016
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Quinten Labuschagne --- South African Society of Clinical Pharmacy (SASOCP), South Africa Natalie Schellack --- South African Society of Clinical Pharmacy (SASOCP), South Africa Andries Gous --- South African Society of Clinical Pharmacy (SASOCP), South Africa Elmien Bronkhorst --- South African Society of Clinical Pharmacy (SASOCP), South Africa Gustav Schellack --- South African Society of Clinical Pharmacy (SASOCP), South Africa Lindie van Tonder --- South African Society of Clinical Pharmacy (SASOCP), South Africa Archele Truter --- South African Society of Clinical Pharmacy (SASOCP), South Africa Caroline Smith --- South African Society of Clinical Pharmacy (SASOCP), South Africa Ruth Lancaster --- South African Society of Clinical Pharmacy (SASOCP), South Africa Sonya Kolman --- South African Society of Clinical Pharmacy (SASOCP), South AfricaThis document was created to serve as a guideline for colistin prescribing in South Africa. Antimicrobial resistance is threatening the effective prevention and treatment of a wide variety of infections, especially those that are caused by multi-drug-resistant (MDR) gram-negative bacteria... -
Correlates of bacterial ulcers and acute HSV-2 infection among men with genital ulcer disease in South Africa: age, recent sexual behaviours, and HIV
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Jami S. Leichliter --- Division of STD Prevention, USA David A. Lewis --- Centre for HIV and STIs, National Institute for Communicable Diseases, South Africa Gabriela Paz-Bailey --- Division of HIV/AIDS Prevention, USAData from baseline surveys and STI/HIV laboratory tests (n=615 men) were used to examine correlates of bacterial ulcers (Treponema pallidum, Haemophilus ducreyi, or Chlamydia trachomatis L1-L3 detected in ulcers) and acute HSV-2 ulcers (HSV-2 positive ulcer specimen, HSV-2 sero-negative, and... -
A seasonal comparison of prokaryote numbers, biomass and heterotrophic productivity in waters of the KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Muir --- Medgar Evers College, USA T Kunnen --- School of Life Sciences, South Africa UM Scharler --- School of Life Sciences, South AfricaThe KwaZulu-Natal Bight is a shallow indentation of the eastern seaboard of South Africa, characterised by a narrow (45 km wide) extension of the continental shelf, with a shelf break at about 100 m. It has a complex hydrography: the... -
First report of cyanobacterial diversity and microcystins in a Microcystis
strain from Sidi Boughaba, a Moroccan coastal lagoon Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Douma --- Department of Biology, Laboratory of Biology and Biotechnology of Microorganisms, N Manaut --- Health and Environment Unit, Provincial Direction of the Ministry of National Education, Morocco B Oudra --- Department of Biology, Laboratory of Biology and Biotechnology of Microorganisms, M Loudiki --- Department of Biology, Laboratory of Biology and Biotechnology of Microorganisms,The cyanobacterial diversity of Sidi Boughaba, a Moroccan coastal lagoon and Ramsar site, was evaluated and its potentially toxic species were isolated and characterised. This study was the first time that cyanobacterial diversity and cyanotoxin production have been characterised in... -
Varroa mites, viruses and bacteria incidences in Kenyan domesticated honeybee colonies
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Onyango Irene Awino --- Kabete Veterinary Laboratories, Kenya Robert Skilton --- International Centre for Insect Physiology and Ecology, Kenya Shadrack Muya --- Zoology Department, Kenya Samuel Kabochi --- Kabete Veterinary Laboratories, Kenya Hellen Kutima --- Zoology Department, Kenya Muo Kasina --- National Sericulture Research Centre – Kenya Agricultural and Livestock Research Organization, KenyaVarroa mite (Varroa destructor Anderson and Trueman) is a major global threat to the western honey bee (Apis mellifera L.). The ectoparasite has been implicated in the spread of honeybee viruses. Beekeeping plays a major role in transmission of the... -
A review of microbial hazards associated with meat processing in butcheries
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: L. B. Shilenge --- Faculty of Science, Department of Environmental Health, South Africa K. Shale --- Faculty of Science, Department of Environmental Health, South Africa T. Matodzi --- Faculty of Science, Department of Environmental Health, South Africa F. Machete --- Department of Natural Resources and the Environment, South Africa C. Tshelane --- Faculty of Science, Department of Environmental Health, South AfricaMeat is highly nutritional and rich in proteins, which makes it a good substrate for possible microbial growth. As a result, in its raw state, meat is easily susceptible to colonization by microorganisms. This study describes the possible sources of... -
Effects of kelp Ecklonia maxima inclusion in formulated feed on the growth, feed utilisation and gut microbiota of South African abalone Haliotis midae
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Nel --- Department of Ichthyology and Fisheries Science, South Africa BI Pletschke --- Department of Biochemistry and Microbiology, South Africa CLW Jones --- Department of Ichthyology and Fisheries Science, South Africa J Kemp --- Department of Ichthyology and Fisheries Science, South Africa G Robinson --- Department of Ichthyology and Fisheries Science, South Africa PJ Britz --- Department of Ichthyology and Fisheries Science, South AfricaThe effect of kelp Ecklonia maxima inclusion in formulated feeds on abalone growth and gut bacterial communities has not been previously investigated in South Africa. An eight-month on-farm growth trial was conducted with sub-adult Haliotis midae (∼43 mm shell length)... -
Activity of some Nile River aquatic macrophyte extracts against the cyanobacterium Microcystis aeruginosa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MM El-Sheekh --- Botany Department, Faculty of Science, Egypt AM Haroon --- Hydrobiology Laboratory, Egypt S Sabae --- Hydrobiology Laboratory, EgyptThe anti-algal activity of five macrophyte extracts on the cyanobacterium Microcystis aeruginosa in Egypt was investigated in 2013. Extract activity varied according to plant type, extracting solvent and its concentration. The highest inhibitory activity was achieved with ethanol extract at... -
Spatio-seasonal dynamics of bacteria and metal composition of a platinum mine tailings dam, Rustenburg, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Molemi E Rauwane --- Agricultural Research Council–Biotechnology Platform, South Africa Laurette M Marais --- Department of Biotechnology, Faculty of Applied and Computer Sciences, Vanderbijlpark Campus, South Africa Oluwatosin G Oladipo --- Unit for Environmental Sciences and Management, South Africa Cornelius C Bezuidenhout --- Unit for Environmental Sciences and Management, South Africa Mark S Maboeta --- Unit for Environmental Sciences and Management, South AfricaSeasonal variations and proximity to polluted sites, among other factors, play a vital role in soil composition. The impact of spatio-seasonal changes on bacterial and heavy metal content on and around the platinum mine tailings dam, Rustenburg, South Africa, was... -
Effect of graded levels of dietary carbohydrate on growth, feed utilisation and intestinal microbial community structure in dusky kob Argyrosomus japonicus fed a pelleted diet
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NC Mabasa --- Department of Ichthyology and Fisheries Science, South Africa PJ Britz --- Department of Ichthyology and Fisheries Science, South Africa CLW Jones --- Department of Ichthyology and Fisheries Science, South Africa A Nel --- Department of Ichthyology and Fisheries Science, South AfricaThe ability to utilise carbohydrates is limited for many predatory marine fishes. Graded levels of dietary carbohydrate (4.1–24.6%) were formulated using pregelatinised maize starch, to determine optimal levels for dusky kob Argyrosomus japonicus, an emerging mariculture finfish for which pelleted... -
Response of two wheat cultivars to inoculation of diazotrophic bacteria in combination with reduced nitrogen fertilisation under field conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Reannah RN Otanga --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, South Africa Kwasi S Yobo --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, South Africa Mark D Laing --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, South AfricaChemical fertilisers are essential for plant nutrition in attaining desired yields. However, increased cost of fertiliser input has made it impossible for small-scale farmers to properly fertilise their crops for optimum yields. Five bacterial strains originally isolated from no-till agricultural... -
First report of Wolbachia from field populations of Culex mosquitoes in south-western Nigeria
Item type: Journal Article • Journal: African Zoology • Authors: Tosin Segun Ogunbiyi --- Redeemer’s University, Nigeria Philomena Eromon --- Redeemer’s University, Nigeria Paul Oluniyi --- Redeemer’s University, Nigeria Femi Ayoade --- Redeemer’s University, Nigeria Owoicho Oloche --- Redeemer’s University, Nigeria Judith Uche Oguzie --- Redeemer’s University, Nigeria Onikepe Folarin --- Redeemer’s University, Nigeria Christian Happi --- Redeemer’s University, Nigeria Isaac Komolafe --- Redeemer’s University, NigeriaRecent reports on finding Wolbachia-strain infections in field mosquito species in some West African countries and the potential for developing these as disease vector biocontrol tools have prompted a search for Wolbachia in mosquitoes within the study area. Using a... -
Eutrophication of Ethiopian water bodies: a serious threat to water quality, biodiversity and public health
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Fetahi --- Aquatic Ecology, EthiopiaFreshwater ecosystems provide several ecological and economic services. However, these ecosystems in Ethiopia are deteriorating, because of economic growth, unwise use and pollution (eutrophication). This paper reviews existing trends of eutrophication in Ethiopian water bodies, identifies principal sources of nutrient... -
Quantifying the impacts of abrasion and bacterial transfer when fish are exposed to sand during a catch-and-release event
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RM Foster --- , South Africa A-R Childs --- , South Africa M Brooks --- , South Africa MW Farthing --- , South Africa EC Butler --- , South Africa WM Potts --- , South AfricaBest-practice guidelines to improve recreational fishers’ handling during catch-and-release (C&R) events are critical to improve the conservation and management of fish stocks worldwide. While best-practice research is growing, there are knowledge gaps, with the effects of sand exposure on fish... -
The effect of fishmeal replacement with terrestrial protein sources on growth, body condition and intestinal microbiota of juvenile dusky kob Argyrosomus japonicus
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CLW Jones --- , South Africa A Nel --- , South Africa A Adesola --- , South Africa T Shipton --- , South Africa H Kaiser --- , South AfricaA balanced combination of protein sources to partially replace fishmeal in the diets of cultured carnivorous fish can promote optimal fish health and production performance. In the present study, the growth, body condition and gut microbiota of juvenile dusky kob... -
Analysis of main factors affecting silage fermentation of sorghum prepared with whole crop and stover in semiarid West Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Yimin Cai --- , Japan Zhumei Du --- , China Delma B Jethro --- , Burkina Faso Man Nignan --- , Burkina Faso Seishi Yamasaki --- , JapanSorghum (Sorghum bicolor L.) is widely cultivated in semiarid West Africa as a combined crop for human consumption and animal feed. In order to address the shortage of ruminant feed in Burkina Faso, we studied the potential of preparing silage... -
Impact of flood regime on phytoplankton communities in the large African reservoir, Lake Nasser, Egypt
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Shymaa S Zaher --- , Egypt Walid Aly --- , EgyptLake Nasser is a reservoir of freshwater for drinking and irrigation in Egypt and it constitutes an important share in the fisheries sector. This study aims to acquire a better understanding of the status of phytoplankton distribution in Lake Nasser... -
Seasonal variation in water quality, plankton diversity and microbial load of tropical freshwater lakes in Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Ihuoma N Anyanwu --- , Nigeria Confidence A Ezema --- , Nigeria Sowechi Ebi --- , Nigeria Chinyere A Nwajiuba --- , Nigeria Okoro Nworie --- , Nigeria Chioma O Anorue --- , NigeriaSeasonal changes significantly affect tropical ecosystems; hence, verification of how these changes affect water quality is important for waterbodies that serve as water and food sources, particular as such changes are often associated with shifts in plankton diversity and microbial... -
Long-term study of the drought impact on the phytoplankton concentration and assemblages in two water supply reservoirs in Namibia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Johannes Sirunda --- Namibia Water Corporation, Namibia Paul Oberholster --- University of the Free State, South Africa Gideon Wolfaardt --- Stellenbosch University, South Africa Christoff Truter --- Toronto Metropolitan University, Canada Sean van der Merwe --- University of the Free State, South AfricaRising temperatures and increased occurrences of droughts, brought on by climate change, are expected to affect reservoir water levels. We hypothesised that the decrease in reservoir volumes in dams with desert climates will favour the growth of phytoplankton biomass, measured... -
Role of the Lethabo Weir in altering the phytoplankton community structure of the Vaal River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Janse van Vuuren --- North-West University, South Africa A Swanepoel --- , South AfricaDuring 2012, aerial photographs of the Vaal River, South Africa, showed differences in water colour on either side of the Lethabo Weir. Water upstream of the weir was muddy brown, while water downstream was olive-green. Physical and chemical analyses indicated... -
Associative nitrogen fixation could be common in South African mesic grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: --- University of KwaZulu-Natal, South Africa --- University of KwaZulu-Natal, South Africa --- Institute for Commercial Forestry Research, South AfricaNon-symbiotic nitrogen-fixing bacterial diazotrophs closely associated with the roots of grasses probably contribute most of the new nitrogen acquired to sustain productive natural grasslands, yet their ecology is poorly understood, especially in southern Africa. We looked for genetic evidence, using... -
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... -
The bacteriome of the Endangered South African endemic Pickersgill’s Reed Frog (Hyperolius pickersgilli)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Mafanela C Mnisi --- South African National Biodiversity Institute, South Africa Moeti O Taioe --- Agricultural Research Council, South Africa Adrian Armstrong --- Biodiversity Research and Assessment, Ezemvelo KZN Wildlife, South Africa Prudent Mokgokong --- Unit for Environmental Sciences and Management North-West University, South Africa Desire L Dalton --- South African National Biodiversity Institute, South Africa Ian du Plessis --- Johannesburg City Parks and Zoo, South Africa Jeanne Tarrant --- Endangered Wildlife Trust, South Africa Antoinette Kotze --- South African National Biodiversity Institute, South Africa Morne Du Plessis --- University of the Free State, South AfricaPickersgill’s Reed Frog (Hyperolius pickersgilli) is an endangered species, endemic to South Africa and restricted to the KwaZulu-Natal coastal region. The species occurs in fragmented patches of coastal reed-bed wetland, which is a habitat that is threatened by urbanisation, agriculture,...