TY - GEN N1 - Pages 761-780 : illustrations ; 24 cm N1 - Bibliographical references (pages 778-780) N1 - Abstract in English N2 - The occurrence of molluscs in 5 lakes joined by the r. Jorka has been investigated. In all lakes the mussel Dreissena polymorpha dominated. This species varied greatly in particular lakes. D. polymorpha varied both as regards individual characters (size, shell and body weight, growth) and population characters (numbers of planktonic larvae and settled individuals, range of distribution, biomass, age structure). L1 - http://rcin.org.pl/miiz/Content/79278/PDF/WA058_87222_P2840-T31_Eko-Pol-A-Nr-3.pdf M3 - Text J2 - Occurrence and distribution of molluscs with special consideration to Dreissena polymorpha (Pall.) J2 - Biotic structure and processes in a lake system PY - 1983-1984 IS - 3 EP - 780 KW - lakes KW - molluscs KW - mussels Dreissena polymorpha KW - distribution KW - numbers KW - age structure A1 - StaƄczykowska, Anna A1 - Lewandowski, Krzysztof A1 - Ejsmont-Karabin, Jolanta A2 - Polska Akademia Nauk. Instytut Ekologii PB - Polish Scientific Publishers VL - 31 CY - Warszawa SP - 761 T1 - Biotic structure and processes in the lake system of r. Jorka watershed (Masurian Lakeland, Poland). 9, Occurrence and distribution of molluscs with special consideration to Dreissena polymorpha (Pall.) UR - http://rcin.org.pl/miiz/dlibra/publication/edition/79278 ER -