@misc{Prejs_Andrzej_Experimentally_1973,
 author={Prejs, Andrzej},
 editor={Polish Academy of Sciences, Institute of Ecology},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 howpublished={online},
 year={1973},
 language={eng},
 abstract={Carp, bream and tench feed mainly on bottom fauna and fauna associated with plants, crucian carp – on zooplankton, and roach prefer plant food (first of all the macrophytes). In the years of studies together with the increase of fish stock their grazing intensity decreased and their feeding habits changed. The fish mainly ate the bottom fauna and fauna associated with plants, to a lesser extent zooplankton and slightly plant communities. In the year with the most numerous fish stock the introduced species (carp and bream) ate about 60% of biomass of bottom fauna and fauna associated with plants, and about 30% of zooplankton biomass consumed by the whole community of non-predatory fish. Data on the differentiation of the distribution of basic feeding grounds of particular fish species, are presented.},
 type={Text},
 title={Experimentally increased fish stock in the pond type lake Warniak. 4, Feeding of introduced and autochthonous non-predatory fish},
 URL={http://rcin.org.pl/Content/72614/PDF/WA058_86594_P2840-T21_Eko-Pol-A-Nr-30.pdf},
 volume={21},
 number={30},
 journal={Ekologia Polska},
 publisher={Państwowe Wydawnictwa Naukowe},
 keywords={freshwater fishes, ecology, nutrition, fish culture, Pisces},
}