Nutrient dynamics of Lake Tanganyika
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چکیده
The large and productive fishery of Lake Tanganyika is an important source of income and nutrition for the surrounding areas. This fishery, based primarily on pelagic clupeids (Kiswahili: dagaa), is very productive, and provides a readily available, nutritious, and inexpensive source of protein to the rapidly growing human populations in this area. The regional importance of the Lake Tanganyika fishery underscores the importance of the strict nutrient balance of the pelagic zone the lake, and any potential changes that might affect the nutrient dynamics of the lake. Global climate change appears to be affecting the productivity of the lake by reducing mixing and lowering nutrient availability (O’Reilly et al. 2003). As these changes develop and progress, it is increasingly essential to understand the nutrient dynamics of the lake.
منابع مشابه
Indirect and direct effects of fish herbivory on nitrogen cycling in nearshore Lake Tanganyika Student: Brittany Graham Mentor: Peter McInytre
When external loading is small, as it is in Lake Tanganyika, the internal redistribution of nutrients can be important for ecosystem productivity. One conduit for this redistribution is fish. Research has been conducted on the transfer of nutrients into the pelagic or benthic ecosystems by benthic or pelagic fishes, respectively, but less attention has been paid to the recycling of nutrients by...
متن کاملNutrient recycling by Tropheus brichardi across a littoral productivity gradient in Lake Tanganyika Student:
Nutrient recycling occurs when nutrients are released into the environment by animals or microbial consumers. Fishmediated nutrient recycling is an important source of nutrients for primary producers in many aquatic ecosystems, sometimes even exceeding external loading rates (Attayde and Hansson 2001). Consumers release non-assimilated nutrients as liquid waste that is available to primary prod...
متن کاملA littoral survey in Lake Tanganyika: spatiotemporal variations in nutrient concentrations, phytoplankton biomass and bathymetry near the Kigoma Region
Nutrient cycling in Lake Tanganyika is influenced by the tilting of the thermocline (Coulter 1991). Prevailing southeast winds during the four month dry season (May through September) cause the thermocline to rise in the south bringing nutrient rich waters from depth to the surface at the southern end of the lake (Coulter 1991). However, related upwelling events also occur in the north, bringin...
متن کاملA short term study on vertical distribution of phytoplankton biomass and nutrients in the pelagic zone in Lake Tanganyika Student: Bigeyo Kuboja
Phytoplankton are microscopic plants that gain energy from the sun through photosynthesis. They are important primary producers in most lakes. Lake Tanganyika exhibits a greater relative range between annual maximum and minimum phytoplankton biomass than most tropical lakes or temperate Great Lakes (Hecky and Kling, 1981; Hecky and Fee, 1981). This is due in part to the permanent stratification...
متن کاملTempo and Mode of Diversification of Lake Tanganyika Cichlid Fishes
BACKGROUND Understanding the causes of disparities in species diversity across taxonomic groups and regions is a fundamental aim in evolutionary biology. Addressing these questions is difficult because of the need for densely sampled phylogenies and suitable empirical systems. METHODOLOGY/PRINCIPAL FINDINGS Here we investigate the cichlid fish radiation of Lake Tanganyika and show that per li...
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