• A bibliography of Lake Kariba, 1969-1978

      Marshall, B.E. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1979-01)
    • 1978 Fisheries statistics - Kariba

      Lake Kariba Fisheries Research Institute (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1979-06)
      Fishery statistics for 1978 are presented for: (1) total production; (2) effort and landings; (3) gill-net fisheries production landings and purchases; (4) monthly percentage composition of catch for Kariba area; (5) African camp effort statistics: (6) sardine fisheries.
    • An assessment of mussel mortality caused by a drop in the water level of Lake Kariba

      French, R.A. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1980-02)
      The level of Lake Kariba steadily fell during the period 1 June 1979 to 2 Feb 1980, except for a 2-wk period during Dec when it was allowed to rise slightly. Following this the level was again drawn down in anticipation of the Upper Zambezi flood water reaching the lake. At its highest level in June 1979 the lake was 487.42 m above sea level but by Feb 1980 it had dropped to 484.53 m, a total drop of 2.89 m. This left a considerable area of exposed shoreline and a large number of stranded mussels. This report presents the results of an attempt to estimate the mussel mortality, carried out from 28 Jan to 1 Feb 1980. The study area extended from the Charara river mouth to Andora harbour with a total of 24 stations.
    • Aspects of the ecology of the crustacean zooplankton in the Sanyati Basin, Lake Kariba

      Marshall, B.E. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1980-06)
      Investigations on the zooplankton in Lake Kariba were carried out as part of a broader programme investigating components of the sardine, Limnothrissa miodon, food chain and factors affecting their productivity. This report deals mainly with the crustacean zooplankton, Bosmina longirostris and Mesocyclops leuckarti, which are the most important species in the sardine's diet. Factors which influence the number and distribution of the zooplankton are discussed. The relationship between the zooplankton and Limnothrissa are also briefly discussed.
    • 1979 Fisheries statistics - Kariba

      Lake Kariba Fisheries Research Institute (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1980-07)
      Fishery statistics for 1979 are presented for: (1) total production; (2) effort; (3) landings and purchases; (4) monthly percentage composition and average weight of each species caught in gill-nets.
    • Aspects of the biology and population dynamics of freshwater mussels in Lake Kariba and Lake McIlwaine

      Stafford Kenmuir, D.H. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1980-07)
      The essential aim of this study was to provide a broad foundation of biological knowledge upon which a programme of mussel utilization and management could be built. Results of the study are presented in three main sections. Part 1 describes the stock of Lake Kariba and Lake McIlwaine; part 2 describes various aspects of the breeding biology of the three species; and part 3 presents the results of morphological, biochemical and age analyses - aspects which are used for initial standing crop and production calculations. The final discussion concludes the thesis with a general examination in ecological terms of the factors which have influenced the development and nature of the mussel faunas of the two lakes under consideration.
    • An evaluation of mark and recapture techniques for estimating tigerfish biomass in Lake Kariba

      Langerman, J.D. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1980-12)
      The effectiveness of 2 mark and recapture techniques was evaluated using tiger fish, Hydrocynus vittatus. The 2 techniques used were: tagging with a plastic tag and fluorescent spray marking. While the tagging method resulted as the logical method to use within the constraints of the tiger fish study, it cannot be considered completely reliable for the estimation of population size in Lake Kariba.
    • Report on the 1980/81 angling census in the Sanyati Gorge, Lake Kariba

      Langerman, J.D. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1981-04)
      The angling census carried out in the Sanyati Gorge, August 1980 - March 1981, is reported. The results are compared to those obtained in the 1973 census. The objectives of the census were: 1) to determine the extent of angling mortality on tigerfish (Hydrocynus vittatus) thereby quantifying this previously neglected component of total mortality; and 2) to assess the economic importance of tigerfish to the recreational fishery on Lake Kariba.
    • A comparison of phytoplankton and total particle counts

      Beattie, I.H. (1981-06)
      Phytoplankton counts made under the light microscope were compared to counts using an electronic dimensional particle counter. Counts were made on a monthly basis, on water samples taken from one station in the Sanyati Basin. Neither total particle numbers nor total particle volume compare closely with phytoplankton numbers. Total particle numbers were of the order of one and a half to two times greater than the phytoplankton numbers.
    • Preliminary phytoplankton counts in the Sanyati Basin, Lake Kariba

      Beattie, I.H. (1981-06)
      Phytoplankton counts were made on a monthly basis on water samples, taken from one station in the Sanyati Basin. The results show seasonal fluctuations which are probably nutrient dependant. High phytoplankton numbers occur at times of high nutrient levels as was found with the crustacean zooplankton populations (Marshall 1980). Numbers also decreased with depth down to the thermocline. Below the thermocline there was little or no change in numbers.
    • 1980 Fisheries statistics - Kariba

      Lake Kariba Fisheries Research Institute (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1981-07)
      The 1980 statistics of the open-water sardine (Limnothrissa miodon ) fisheries and gill-net fisheries are presented. Summaries of total production and total effort, landings inshore and gill-net fisheries are also presented.
    • 1981 fisheries statistics, Lake Kariba - Zimbabwe waters

      Marshall, B.E.; Mandisodza, J.W. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1982-03)
      The 1981 statistics of the open water fishery (sardine, Limnothrissa miodon , and tigerfish, Hydrocynus vittatus) and inshore fishery (cichlids, labeoa, mainly L. altivelis , distichoclids, mainly Distichodus schenga , tigerfish, H. vittatus , mormyrids, mainly Mormyrus longirostris and M. deliciosus , and catfish, Clarias gariepinus) in Lake Kariba are presented.
    • A re-examination of tigerfish growth rates in Lake Kariba

      Beattie, I.H. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1982-04)
      Growth rates of male and female tigerfish Hydrocynus vittatus were determined from length/frequencies of fish from the Sanyati Basin and Sinamwenda estuary, Lake Kariba. Growth rates were similar in both sexes for the first two years, after which females grew faster and reached a greater length. Fish from the Sanyati Basin appeared to grow slightly faster than those from the Sinamwenda Estuary.
    • A survey of the artisanal fishery on the Zimbabwean side of Lake Kariba

      Machena, C. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1983-02)
      Two types of fishermen have been identified along the lake shore: contract fishermen and independent fishermen. Independent fishermen move from their fishing grounds to other grounds in search for more fish and also to communal lands for farming during the rains. The fish from Kariba are marketed to a large part of the country creating a very large market potential. Profits accruing to the fishermen are not very attractive and could be the reason for the migratory behaviour of the fishermen. The fishermen population is rural with a characteristic expansive pyramid.
    • 1982 Fisheries statistics, Lake Kariba - Zimbabwe side

      Marshall, B.E.; Shambare, L. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1983-04)
      Statistics are presented for Zimbabwe's Lake Kariba fisheries for the year 1982, being divided into open-water and inshore fishery sectors.
    • 1983 fisheries statistics, Lake Kariba - Zimbabwe side

      Marshall, B.E.; Shambare, L. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1984-04)
      Statistics are presented of the open water and inshore fisheries of Lake Kariba, the Zimbabwe side, for 1983.
    • 1984 fisheries statistics, Lake Kariba - Zimbabwe side

      Marshall, B.E.; Jokonya, P.; Chinoda, M. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1985-02)
      Statistics are presented for the Zimbabwe fisheries of Lake Kariba for 1984, being divided into pelagic and inshore fishery activities.
    • The Gache Gache Fishing Co-operative, July 1984-June 1985

      Mtada, O.S.H. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1985-07)
      Details are given of development of the Gache Gache Fishing Cooperative and fishing activities in Lake Kariba undertaken during the year June 1984-June 1985. The viability of fishing cooperatives in Lake Kariba is also examined.
    • Annual report 1986

      Machena, C. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1986)
      A report is given of activities conducted by the Lake Kariba Fisheries Research Institute during the year 1986, describing the various conferences and research projects carried out. A list of publications by the Institute is also included.
    • 1985 fisheries statistics, Lake Kariba - Zimbabwe side

      Chimbuya, B.; Chinoda, M.; Jokonya, P. (Department of National Parks and Wild Life ManagementKariba, Zimbabwe, 1986-05)
      Catch and effort data are given for the various pelagic and inshore fisheries of the Zimbabwe side of Lake Kariba for the period 1980-85.