Charakterystyka ichtiofauny Warty i jej dopływów w granicach Załęczańskiego Parku Krajobrazowego

Abstract

The ichthyofauna of the Warta River and its changes brought about by anthropogenetic factor shave been investigated for more than fourty years. The investigations have proved that the slightly altered ichthyofauna, which is characteristic for a barbel region, has survived only with in the boundaries of Załęcze Nature Park area. The fragment of the Warta River with in the boundaries is populated by barbus, nase, chub, zarthe and 15 other species of fish as well as by brook lamprey. In order to preserve the above-mentioned reophilous species and to protect their spawning-grounds the author proposes to establish a strict fauna - preserve (Fig. 1) (for summary see page 375-376).