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Eutrophication of lakes - long-term changes
Polish Academy of Sciences. Institute of Ecology
Polish Academy of Sciences. Institute of Ecology. Publishing Office
Strony 475-487 : ilustracje ; 27 cm ; Bibliografia na stronach 486-487
No trends were found in longterm variation (between the 1970s and the 1990s) of basic trophic parametres (TP,TN, chlorophyll concentration, algal biomass, and water transparency) in five lakes of the river-lake system typical of a lakeland. hilly area (the Jorka river system, Masurian Lakeland). Recently, this lake chain maintains the historically developed trophic differentiation between deep, mesotrophic lake close to headwaters and shallow, eutrophic lake close to the outlet of the river. The only change found is the replacenemt of cyanobacteria dominating in the 1970s by dinoflagellates dominating in the 1990s. A strong correlation was found between TP loading to lakes and in-lake TP concentration in spring periods, however no correlation existed between TP and other trophic indices. On the other hand, the interrelations between SO, chlorophyll, and algal biomass were highly significant in summer periods and marginally significant in spring periods. This pattern was also found in other groups of lakes in the region. It is concluded that in hilly lakeland region, the river-lake systems draining small mosaic catchments are resistant to the further eutrophication (low nutrient loading, no point sources) and for this reason they tend to maintain the trophic conditions developed in the remote past.
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Zasób chroniony prawem autorskim. [CC BY 3.0 PL] Korzystanie dozwolone zgodnie z licencją Creative Commons Uznanie autorstwa 3.0 Polska, której pełne postanowienia dostępne są pod adresem: ; -
Muzeum i Instytut Zoologii Polskiej Akademii Nauk
Biblioteka Muzeum i Instytutu Zoologii PAN
4 lut 2022
21 kwi 2020
70
https://rcin.org.pl./publication/91508
Hillbricht-Ilkowska, Anna Węgleńska, Teresa
Hillbricht-Ilkowska, Anna
Hillbricht-Ilkowska, Anna
Hillbricht-Ilkowska, Anna
Hillbricht-Ilkowska, Anna
Hillbricht-Ilkowska, Anna