Reservoir Eutrophication

About this book

While the fundamental ecological processes in reservoirs are in many respects the same as those in natural lakes, there are distinct differences. In particular, reservoirs are more likely to be mesotrophic or eutrophic. The quality of water in reservoirs is in large measure dependent on the loading of nutrients and organic matter, the transport processes in each reservoir, and the mutual interaction of biotic and abiotic processes. The 12 articles on reservoir eutrophication collected in this issue are selected from the papers presented at the 2nd International Conference on Reservoir Limnology and Water Quality. They highlight the special character of reservoirs as artificial ecosystems with a variety of sizes and uses (hydroelectric, water supply, flood control, etc) and consequently with a variety of water quality requirements. The emphasis is on the loadings of phosphorus and other nutrients, from external sources and internal cycles, and the biological responses. Reservoir limnology is an applied science with a strong orientation to problem solving - dealing with algal blooms, weed growths, tastes and odours, etc. These proceedings provide insight into the basic ecology of reservoir systems and will interest both the research community and those involved in the design and operation of such facilities.

Contents

Permissible charge of nutrients and organic compounds in relation to other processes in reservoirs (introduction to the proceedings) (O.T. Lind). Importance of epilimnion phosphorus loading and wind-induced flow for phytoplankton growth in Rimov Reservoir (J. Hejzlar et al.). Enhanced activity of alkaline phosphatases - phytoplankton response to epilimnetic phosphorus depletion (J. Vrba et al.). Evaluation of nutrient-chlorophyll relationships in the Rybinsk Reservoir (N.M. Mineeva). In vivo fluorescence of chlorophyll a: estimation, of phytoplankton biomass and activity in Rimov Reservoir (Czech Republic) (V. Vyhndlek et al.). The effect of water-flow rate on zooplankton and its role in phosphorus cycling in small impoundments (J. Ejsmont-Karabin et al.). Abundance and distribution of profundal zoobenthos in Spanish reservoirs: differences between 1973/75 and 1987/88 surveys (M. Real et al). Long-term nutrient loading and biological response in a flood-water reservoir (Neue Donau) in Vienna, Austria (M.T. Dokulil). Investigation of the development of biological and chemical conditions in the Vir Reservoir 30 years after impoundment (Z. Zakova et al.). Phosphorus deficiency diagnostics in the eutrophic Rimov Reservoir (J. Nedoma et al). Relative importance of internal sources of phosphorus and organic matter in northern Finnish reservoirs (S.K. Hellsten et al). Degradation of organic substances in reservoirs (V. Straskrabova et al.).

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