Report of Activities of DFC

Densities and growth rates of the 1989 and 1990 year classes of sole, plaice, dab, flounder, cod and whiting were recorded. Two cruises were undertaken for this purpose according to the criteria of the International Demersal Young Fish Survey. The beam trawl survey was continued in order to estimate the stock size of adult flatfish in the southern North Sea in August. This was part of an international survey in collaboration with the Dutch and English Institutes.