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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Preliminary observations on nutrient enrichment of semi-arid, manmade lakes in the northern and southern hemispheres
Lake and Reservoir Management, Volume 5, No. 2, Year 1989
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Description
This paper is part of a multi-step assessment of the hypothesis that subtropical, semi-arid impoundments may respond differently to increasing nutrient enrichment than similar northern temperate waterbodies (primarily natural lakes) from which the classical lake eutrophication concept has been derived. Common physicochemical indicators of eutrophication are referenced, including nutrient status, phytoplankton biomass (chlorophyll), and hypolimnetic deoxygenation. Data from 89 reservoirs in the southwestern United States and southern Africa were used to examine the eutrophication-related limnology of these lakes. In particular, the effects of a large catchment area:lake surface area ratio (AD:A) on the turbidity, nutrient status, and phytoplankton standing crop were highlighted as distinct features relevant to semi-arid lake classification. The responses of reservoirs in semi-arid regions of the northern and southern hemispheres to nutrient enrichment are contrasted with responses of temperate lakes to highlight their implications for accurately assessing eutrophication of manmade lakes in subtropical, semi-arid areas. © 1989 Taylor and Francis Group, LLC.
Authors & Co-Authors
Thornton, Jeffrey A.
South Africa, Cape Town
Cape Town City Council
Rast, W.
United States, Reston
United States Geological Survey
Statistics
Citations: 15
Authors: 2
Affiliations: 2
Identifiers
Doi:
10.1080/07438148909354399
ISSN:
07438141
e-ISSN:
10402381