@misc{Kufel_Lech_Eutrofizacja_2000, author={Kufel, Lech}, editor={Polska Akademia Nauk. Instytut Ekologii}, copyright={Creative Commons Attribution BY 3.0 PL license}, address={Dziekanów Leśny}, howpublished={online}, year={2000}, language={pol}, abstract={This paper is aimed at focusing the Reader’s attention to some less considered or neglected aspects of lakę eutrophication. The weakness of the existing chlorophyll-nutrient models is demonstrated here by the apparent uncoupling of chlorophyll and nutrients in the Great Masurian Lakes and also in other lakes of the Polish lowland. The models seem to not recognise sonie specific properties of lakes, which vary along their trophic gradient. The first is a different type of nutrient cycling - dominated by vertical, cyclic and bimodal nutrient transport in eutrophic lakes versus morę conservative nutrient turnover restricted to the epilimnetic zonę and relying mostly on biotic recycling in oligo- and mesotrophic lakes. Secondly, the models do not consider the top-down effects of zooplankton, which in eutrophic lakes tend to reshape the algal structure towards the dominance of non-edible blue-green Cyanobacteria. This, in turn, would enhance accumulation of nutrients in epilimnia of eutrophic lakes and bimodal character of the nutrient turnover. Variable overlapping of abiotic and biotic factors in lakes along their trophic gradient make predictive power of the empirical models poor and calls for further insight and for a coherent theory of lakę eutrophication.}, title={Eutrofizacja jezior, czyli o niedostatkach pewnych modeli empirycznych i potrzebie spójnej koncepcji zjawiska}, type={Text}, URL={http://rcin.org.pl/miiz/Content/219963/PDF/WA058_172793_P3259-46_Eko-Pol-B.pdf}, volume={46}, number={4}, journal={Wiadomości Ekologiczne}, publisher={Oficyna Wydawnicza Instytut Ekologii PAN}, }