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vol. 7, nr. 2 (2006)


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Biodiversity in three lobelian lakes in relation to the catchment area influence
Marek Kraska, Ryszard Piotrowicz, Piotr Klimaszyk, Natalia Kuczyńska-Kippen, Elżbieta Szeląg-Wasielewska
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Department of Water Protection, Adam Mickiewicz University, ul. Drzymały 24, 60-613 Poznań, Poland

vol. 7 (2006), nr. 2, pp. 401-413
abstract: The problem of anthropological transformation of the natural environment and the resulting species and habitat impoverishment is particularly important in relation to sensitive changes of ecosystems undergoing protection and being dependent on the surrounding ecosystems that have already been transformed. This often applies to soft-water lakes of a low trophy that are called ‘lobelian lakes’ due to the presence of a specific kind of vegetation. Such lakes are often situated within the transformed catchment areas. As a result of weakly buffered waters they often undergo accelerated processes of dystrophication and humification, while others undergo eutrophication. This paper presents an analysis of the present condition and changes within the last decade in the ecosystems of three reserve lobelian lakes.
keywords: soft-water lakes, lobelian lakes, catchment area, water chemical properties, plankton, vegetation
original in: Polish