HYDROACOUSTICS
ANNUAL JOURNAL
START NEW VOL 20 SEARCH STATISTICS PAS - GDANSK DIVISION

Hydroacoustical estimation of fish abundance and distribution in the Solina reservoir

pp. 169-172, vol. 3, 2000

Małgorzata Godlewska
International Center of Ecology, PAS, Łomianki, Poland

T. Półtorak
International Center of Ecology, PAS, Łomianki, Poland

A. Świerzowski
Fishery Technique Department, Olsztyn, Poland

Key words:

Abstract: On the basis of hydroacoustical measurements performed in Solina reservoir from May to September 1999 the mean abundance was estimated at 0.7 fish per 1000 m3, and thus very low. Clear seasonal changes in fish vertical distributions, related to the hydrological parameters of the water were observed. Majority of fish performed diurnal vertical migrations to the productive surface water at night.

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© Polish Acoustical Society - Gdansk Department, Polish Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported. (CC BY-NC-SA 3.0)