@misc{Dobrowolski_Kazimierz_A._Structure_1969,
 author={Dobrowolski, Kazimierz A.},
 editor={Polska Akademia Nauk. Komitet Ekologiczny},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 howpublished={online},
 year={1969},
 language={eng},
 abstract={The paper presents the structure of waterfowl communities. Materials come from the Mamry Lake (10,450 ha), as well as data from previous papers by the present author were utilized. Birds do not inhabit the whole reservoir uniformly, but do it selectively – they have more or less constant places of occurrence or aggregation. Ecological association of birds of the lake was identified and there was indicated the fact that lake zones differentiate it, while individual links of the association do occupy different zones finding just in them their proper ecological niches. The boundary between reeds and the open water is the most numerously inhabited zone. Lake associaticn has been compared with the river one, differences between them and the effect of these differences upon ecological relations in both communities and both environments has been indicated.},
 type={Text},
 title={Structure of the occurrence of waterfowl types and morpho-ecological forms},
 URL={http://rcin.org.pl/Content/70918/PDF/WA058_86259_P2840-T17_Eko-Pol-A-Nr-2.pdf},
 volume={17},
 number={2},
 journal={Ekologia Polska. Seria A},
 publisher={Państwowe Wydawnictwo Naukowe},
 keywords={water birds, ecology},
}