@misc{Hillbricht-Ilkowska_Anna_Experimentally_1973,
 author={Hillbricht-Ilkowska, Anna and Prejs, Andrzej and Węgleńska, Teresa},
 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={The utilization by older age-groups of fish (tench, carp, crucian carp and bream) of the biomass and production of zooplankton in the years 1967-1969, was assessed. The increase of the predation rate of fish and the increase of the consumed biomass were observed in big crustacean species (Daphnia cucullata, Eudiaptomus graciloides and Diaphanosoma brachyurum), the biomass and production of which decreased in successive years.},
 type={Text},
 title={Experimentally increased fish stock in the pond type lake Warniak. 8, Approximate assessment of the utilization by fish of the biomass and production of zooplankton},
 URL={http://rcin.org.pl/Content/72618/PDF/WA058_86604_P2840-T21_Eko-Pol-A-Nr-34.pdf},
 volume={21},
 number={34},
 journal={Ekologia Polska},
 publisher={Państwowe Wydawnictwa Naukowe},
 keywords={freshwater fishes, freshwater zooplankton, fish culture, Pisces},
}