Blar i Fiskeridirektoratets skrifter, Serie Havundersøkelser (1900-1990) på forfatter "Danielssen, Didrik S."
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Growth and survival studies on 0-group plaice (Pleuronectes platessa L.) in a small basin with a closed ecosystem
Øiestad, Victor; Iversen, Svein A.; Danielssen, Didrik S. (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1978)A growth and survival experiment on 0-group plaice was carried out in a small basin during the summer of 1976. The volume of the basin was about 25 m³, and the seawater was left stagnant during the summer. Of the initial ... -
Investigations on herring, Clupea harengus L., from the Norwegian Skagerak Coast during the years 1963-64
Danielssen, Didrik S. (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1) The material was collected on a little part of the Norwegian Skagerak coast in 1963-1964. 2) The following data were sampled: total length and weight, stage and weight of gonads, intestinal fat content, vertebrae ... -
On the migrations of the cod in the Skagerak shown by tagging experiments in the period 1954-1965
Danielssen, Didrik S. (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)1. A total of 1,244 cod was tagged from 1954 to 1965. The recapture percentage from the different tagging years varied between 24.9 aid 35.6 with a mean of 29.5 for the whole period. 2. No cod has been recaptured on the ...