Cyclostomes and fishes of the drainage basin of the river Płociczna
1997
Z. Chełkowski | B. Chełkowska | O. Antoszek
Studies on the occurrence of cyclostomes and fishes of the drainage area of the river Płociczna were carried out in 1996. The following parameters were defined: constancy of occurrence (C), domination index (D), and fractions of the biomass (W) represented by individual species. The results were confronted with the data from the river Płociczna published by the other authors within 1986-1994. A total of 1 cyclostome and 32 fish species was presently recorded to inhabit the drainage area of the river Płociczna. In this number there were 1 cyclostome and 7 fishes which are protected species. The part of the drainage area of the Płociczna under study, constitutes a section of the Drawieński National Park. The species occurring in that part, as well as in its buffer zone were discussed.
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