Blar i Fiskeridirektoratets skrifter, Serie Havundersøkelser (1900-1990) på emneord "0-gruppe"
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On the possibility of estimating year-class strength by measuring echo-abundance of 0-group fish
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1965)The possibility of estimating the distribution and abundance of 0-group fish by a combination of echo surveying and fishing experiments with pelagic trawl and purse seine is discussed. The existence of scattering layers, ...