Unique qualities and special problems of the African Great Lakes

  title={Unique qualities and special problems of the African Great Lakes},
  author={George W. Coulter and Brian R. Allanson and Michael Bruton and Peter Humphry. Greenwood and Rob C. Hart and Peter B. N. Jackson and Anthony J. Ribbink},
  journal={Environmental Biology of Fishes},
SynopsisThe African Great Lakes consist of large, deep rift valley lakes (e.g. Malawi & Tanganyika) and shallower lakes between the Eastern and Western Rifts (e.g. Victoria). They are a group comparable in size to the North American Great Lakes, but are old. Most are seasonally thermally stratified, and wind is the decisive factor that determines the annual cycle of cooling and mixing. Lakes Tanganyika, Malawi and Kivu are meromictic, with deep relict hypolimnia. Large magnitudes and time… 

African lakes and their fishes: conservation scenarios and suggestions

  • A. Ribbink
  • Environmental Science
    Environmental Biology of Fishes
  • 2004
It is recommended that captive propagation should be practised to conserve species and to retain the option of returning rescued taxa to the lake at a later date, assuming L. niloticus populations have been reduced.

Tropical lakes: how latitude makes a difference

Tropical lakes are far less numerous than temperate lakes because lakes of glacial origin are rare in the tropics. Also, the mixture of lake types differs from tropical to temperate latitudes; lakes

Lentic Freshwater: Lakes

Evolution of the tribe Tropheini from Lake Tanganyika: synchronized explosive speciation producing multiple evolutionary parallelism

On the basis of phylogenetic analyses of the Tropheini, a lineage of endemic rock-dwelling cichlid fishes from Lake Tanganyika, a pathway of explosive speciation that accounts for a non-bifurcating manner of cladogenesis is suggested.

The Lake Victoria environment: Its fisheries and wetlands — a review

  • J. Balirwa
  • Environmental Science
    Wetlands Ecology and Management
  • 2004
An additional hypothesis is put forward to determine whether or not wetland vegetation types in Lake Victoria are important fish habitats, and allows for testing several interrelated sub-hypotheses about the relationships between wetlands vegetation and the ecology of Nile tilapia.

Metrics of Ecosystem Status for Large Aquatic Systems — A Global Comparison

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There is a growing recognition of the need to conserve biodiversity that has been conceptualised in the Convention of Biological Diversity. Maintenance of fish species richness is particularly

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Lacustrine ecosystem history since the industrial revolution provides important evidence of natural versus anthropogenic effects on the environment. With high-resolution sedimentary core samples and

The Dynamics of Shoreline Wetlands and Sediments of Northern Lake Victoria

Lake Victoria(East Africa) has in recent years undergone dramatic ecosystem changes that are not well understood. This research carried out between 2000 and 2004 found evidence of strong influence of

Phylogeography, genetic diversity, and population structure of Nile crocodile populations at the fringes of the southern African distribution

The distribution of mitochondrial haplotypes indicated ancestral genetic connectivity across large areas, with loss of diversity along the north-south axis, suggesting long-term genetic diversity is likely to be compromised, raising conservation concern.



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The discrepancy between high primary production and poor fish yields in some tropical reservoirs, especially in Souht East Asia, is apparently due to the fact that not all available trophic levels

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The principles of physical limnology in the Southern Hemisphere are no different to those in other parts of the world and the same mechanisms may be expected to be active in lakes of similar size and

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Most aquarium fishes exported from Lake Malawi are cichlids of 10 rock-frequenting genera collectively referred to by their Chitonga name, Mbuna. These fishes provide a classical example of

The Ecological Differentiation of Two Closely Resembling Haplochromis Species From Lake Victoria (H. Iris and H. Hiatus ; Pisces, Cichlidae)

The results corroborate the biological validity of the species rank, which hitherto was based on morphology only, and lead to a discussion on bathymetric segregation as a speciation mode for lacustrine cichlids.

The phytoplankton and protozooplankton of the euphotic zone of Lake Tanganyika: Species composition, biomass, chlorophyll content, and spatio‐temporal distribution1

The seasonal cycle of phytoplankton and protozooplankton 1 iomass observed at two widely separated pelagic stations in the euphotic zone of Lake Tanganyika from February through November 1975 could

Changes in the Size Structure of Cichlid Populations of Lake Malaŵi Resulting from Bottom Trawling

A bottom trawl fishery, primarily for cichlids, was started in 1968 in southern Lake Malaŵi. Since then a dramatic change has occurred in the catch of cichlids from one dominated by large species to

Temperature steps in Lake Kivu: a bottom heated saline lake

Abstract Vertical profiles of temperature microstructure in Lake Kivu were obtained with “mini-microstructure recorders” developed by C.S. Cox and William Johnson at Scripps Institution of

Impact of Fishing on the Inshore Fishery of Lake Victoria (East Africa)

Curvilinear multiple regression analysis was used to examine the large variation in fishing effort, gear composition, and catches around the lake and suggest fishing practices that would give highest yields.

Some effects of demersal trawling in Lake Malawi (Lake Nyasa) from 1968 to 1974

Exploratory trawl data were used to define demersal fish stocks of Lake Malawi in terms of abundance by depth and area and the composition of the catch in the heavily exploited southern end of the lake has changed from one dominated by large species of Haplochromis sp.