@misc{Pakulnicka_Joanna_Changes_1999,
 author={Pakulnicka, Joanna and Bartnik, Wojciech and Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 volume={42},
 number={8},
 copyright={Rights Reserved - Free Access},
 journal={Fragmenta Faunistica},
 address={Warsaw},
 howpublished={online},
 year={1999},
 publisher={Museum and Institute of Zoology, PAS},
 language={eng},
 abstract={Ninety-five species of aquatic beetles were observed in the weakly eutrophic Lake Luterskie. The dominants were: Noterus crassicornis, Haliplus flavicollisand H. immaculatus. Over 13 years there was a decrease in the community abundance of aquatic beetles. Changestook place also with respect to the occurrence of the species, domination structure (a decrease in the abundance of Haliplidae, and an increase in the abundance of Dytiscidaecommunities) and synecological grouping (a decrease in the number of lake-river elements, and an increase of small water-body species). These changes clearly indicate progressing eutrophication of the lake under study.},
 title={Changes in the fauna of aquatic beetles (Coleoptera aquatica) in Lake Luterskie (Olsztyn Lake District) in 1981-1993},
 type={Text},
 URL={http://rcin.org.pl/Content/54292/PDF/WA058_60964_P256-T42_Fragm-Faun-Nr-8.pdf},
 keywords={counting changes, phenology, Luterskie, Lake, Coleoptera aquatica, Olsztyn Lake District, beetles, Coleoptera, Insecta, zoocenosis, insects, lake, aquatic beetles, eutrophication},
}