Abstract
Primary production was studied in two reservoirs of the Modder River, which are polluted by two cities over a period that included the tail end of a drought and severe flooding. It was shown that suspended inorganic materials affected the underwater light climate and consequently had a marked influence on primary productivity. The ratio of euphotic to mixing depth was shown to be the most important factor affecting overall productivity and that nutrients are of secondary importance only. Control measures which are based on bottom-up relations, would most probably be inapplicable to the turbid waters of the Modder River.
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© 1992 Kluwer Academic Publishers
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Grobbelaar, J.U. (1992). Nutrients versus physical factors in determining the primary productivity of waters with high inorganic turbidity. In: Berman, T., Gons, H.J., Mur, L.R. (eds) The Daily Growth Cycle of Phytoplankton. Developments in Hydrobiology, vol 76. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2805-6_16
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DOI: https://doi.org/10.1007/978-94-011-2805-6_16
Publisher Name: Springer, Dordrecht
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