General characteristics of coregonid management in 132 Polish lakes

Abstract

Analyses were carried out of the data on catches and stockings of vendace and white- fish in 132 lakes used by 21 fishery enterprises. The lakes are located in the following lake districts: Drawskie, Wałeckie, Kaszuby, Mazuria, Varmia and Suwałki. The lakes were divided into classes depending on the morphometry, coregonid yields and stocking rates. A group of several lakes was identified, in which the results of coregonid management were much better than the average. The obtained results systematise the most important parameters of whitefish and vendace management in the lakes of north Poland, and are related to lake morphometry and long-term fishery records.