International Bottom Trawl Survey. This survey aims at estimating the recruitment of a number of commercial fish species, such as herring, cod, haddock whiting and Norway pout. During the survey also hydrographical data are collected. In each ICES rectangle visited one haul (30 minutes) will be made with a GOV bottom trawl. After each haul a profile will be made with a CTD-Sonde. In addition herring larvae will be sampled with a plankton-net (MIK).
Remment ter Hofstede (Netherlands Institute for Fisheries Research)
International Council for the Exploration of the Sea (ICES)