Search
Search results for
We found
15 results for you
-
A LIMNOLOGICAL INVESTIGATION OF LAKE LIAMBEZI, CAPRIVI
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: M.T. Seaman --- , South Africa W.E. Scott --- , South Africa R.D. Walmsley --- , South Africa B. C.W. van der Waal --- , South Africa D.F. Toerien --- , South AfricaA general investigation was carried out on Lake Liambezi to characterize the limnological features of the lake. The lake, 101 km2 in area and situated within the tropics, was found to be shallow and bordered by reed swamps, particularly on... -
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... -
A PRELIMINARY LIMNOLOGICAL STUDY OF BUFFELSPOORT DAM AND ITS CATCHMENT
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: R.D. Walmsley --- , D.F. Toerien --- ,A limnological survey of the Buffelspoort Dam and its catchment between 1973 and 1975 showed that the water of the area contained extremely low concentrations of dissolved minerals and that there was no point source of nutrient supply to the... -
HYDROCLIMATE DEVELOPMENT FOLLOWING IMPOUNDMENT IN A TROPICAL AFRICAN MAN-MADE LAKE (LAKE ROBERTSON, ZIMBABWE)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: N.G. Cotterill --- Hydrobiology Research Unit, Zimbabwe J.A. Thornton --- Hydrobiology Research Unit, ZimbabweLake Robertson was impounded by the Darwendale Dam which was completed in late 1976 to supplement the water supply to the City of Harare, Zimbabwe. This paper presents the results of a fortnightly sampling programme conducted on the lake between... -
SEASONAL VARIATION AND CORRELATION OF ZOOPLANKTON WITH CULTIVABLE FISHES OF SAGAR LAKE (INDIA)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: Maya Gupta --- Department of Zoology, India D.D. Soni --- Department of Zoology, IndiaMonthly collection of zooplankton samples and cultivable fishes were made from different sampling stations of Sagar lake. The seasonal variation of different groups of zooplankton and cultivable fishes was recorded. The data was analyzed statistically to obtain analysis of variance... -
THE DEVELOPMENT OF ECOLOGICAL CONCEPTS IN LIMNOLOGY, WITH PARTICULAR REFERENCE TO THE LAST TWENTY-FIVE YEARS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: C.S. Reynolds --- , UKThis paper compares the development of ecological ideas in limnological science with those refined in terrestrial biology. It is suggested that topics peculiar to the perception and management of aquatic systems had a distracting influence upon the conceptual development of... -
A QUARTER CENTURY OF GREAT LAKES RESEARCH IN AFRICA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: DavidH. Eccles --- , United KingdomThe African Great Lakes differ from shallower large African lakes by undergoing seasonal stratification and from large reservoirs in having long residence times, so that the ionic concentration of the lake water differs substantially from that of the inflows. -
ASPECTS OF COMPARATIVE PLANKTON ECOLOGY IN CASCADING MGENI RIVER RESERVOIRS (MIDMAR, ALBERT FALLS, AND NAGLE): AN OVERVIEW
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R.C. Hart --- Department of Zoology & Entomology, South AfricaAn overview of a three year study of abundance, community structure and succession of zooplankton and phytoplankton in relation to physical limnological conditions in Lakes Midmar and Albert Falls is presented, along with findings on zooplankton from a nine month... -
A LIMNOLOGICAL SYNOPSIS OF BHANGAZI SOUTH, A DYSTROPHIC COASTAL LAKE IN THE GREATER ST LUCIA WETLAND PARK (KWAZULU/NATAL), WITH COMMENTS ON ITS CONSERVATION VALUE.
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R. C. Hart --- , , South Africa C. C. Appleton --- , , South AfricaBase-line limnological and biological data are given for Lake Bhangazi South, a small lake on the coastal plain of Kwazulu-Natal, South Africa. This shallow (Zmax < 6 m), subtropical lake is a warm and seemingly continuously polymictic system, but experiences... -
Limnology of southern African coastal lakes — new vistas from Mozambique
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RobC Hart Custodio BoaneFourteen mostly small, isolated, and relatively deep coastal inundation lakes were surveyed during the cool season (August) of 1996. No thermal or chemical stratification existed, but near-bottom hypoxia was evident in several systems. Ionic conductivity varied quite widely, but was... -
Historical analysis of the Journal of the Southern African Society of Aquatic Scientists and prospects for the development of a sub-Saharan African limnology
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Wishart --- Freshwater Research Unit, Department of Zoology, South Africa BR Davies --- Co-operative Research Centre for Freshwater Ecology, Australia M Coke --- , South AfricaFor many years the Journal published by the Southern African Society of Aquatic Scientists has aimed to provide a forum for the publication of research results, observations, comment, theories, hypotheses and other information on natural waters in and around Africa... -
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... -
SEASONAL VARIATION AND CORRELATION OF ZOOPLANKTON WITH CULTIVABLE FISHES OF SAGAR LAKE (INDIA)
Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: Maya Gupta --- Department of Zoology, India D.D. Soni --- Department of Zoology, IndiaMonthly collection of zooplankton samples and cultivable fishes were made from different sampling stations of Sagar lake. The seasonal variation of different groups of zooplankton and cultivable fishes was recorded. The data was analyzed statistically to obtain analysis of variance... -
Influence of environmental factors on seasonal changes in clupeid catches in the Kigoma area of Lake Tanganyika
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: IA Kimirei YD MgayaAn investigation into the relationship between the fluctuating physico-chemical environment and variability in fish catches in the Kigoma, Tanzania, area of Lake Tanganyika was conducted from January to December 2003. Catch per unit effort (kg fishing unit–1 night–1) showed two... -
Plankton composition, biomass, phylogeny and toxin genes in Lake Big Momela, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MI Hamisi --- Department of Biotechnology and Bioinformatics, Tanzania C Lugomela --- Department of Aquatic Sciences and Fisheries Technology, Tanzania TJ Lyimo --- Department of Molecular Biology and Biotechnology, Tanzania B Bergman --- Department of Ecology, Environment and Plant Sciences, Sweden B Díez --- Department of Ecology, Environment and Plant Sciences, SwedenLake Big Momela, one of the East African soda lakes in Northern Tanzania characterised by highly saline-alkaline conditions, making them inhospitable to a range of organisms, although supporting massive growths of some adapted planktonic microorganisms that serve as food for...