caa a22 4500 39755026X CHVBK 20180308164748.0 cr unu---uuuuu 161202e199612 xx s 000 0 eng 10.1006/jmsc.1996.0134 doi (NATIONALLICENCE)oxford-10.1006/jmsc.1996.0134 Heessen Henk J. L. Netherlands Institute for Fisheries Research, PO Box 68, 1970 AB, IJmuiden, The Netherlands Time-series data for a selection of forty fish species caught during the International Bottom Trawl Survey [Elektronische Daten] [Henk J. L. Heessen] Relative abundance estimates of 40 fish species caught during the ICES coordinated International Bottom Trawl Survey are presented for the period 1970-1993. Trends in survey catches for eight commercial species are compared with total stock biomass estimates derived from stock assessment. In general, there is a remarkably good correspondence between these two independent parameters, suggesting that the survey is capable of registering significant changes in abundance. Among the 40 species, there are many more showing a positive trend during recent years than a negative one. However, the commercial species are all either declining or are stable. The most significant changes are observed in "southern” species, which is probably related to a period of relatively warm winters after 1990. In many resident species, however, that appear to be increasing over a prolonged period of time, this explanation does not seem to apply. © 1996 International council for the Exploration of the Sea Short Communication nationallicence fish nationallicence long-term trends nationallicence North Sea nationallicence trawl survey nationallicence ICES Journal of Marine Science Oxford University Press 53/6(1996-12), 1079-1084 1054-3139 53:6<1079 1996 53 icesjms https://doi.org/10.1006/jmsc.1996.0134 text/html Onlinezugriff via DOI 1 other jats NATIONALLICENCE 856 40 https://doi.org/10.1006/jmsc.1996.0134 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Heessen Henk J. L. Netherlands Institute for Fisheries Research, PO Box 68, 1970 AB, IJmuiden, The Netherlands NATIONALLICENCE 773 0- ICES Journal of Marine Science Oxford University Press 53/6(1996-12), 1079-1084 1054-3139 53:6<1079 1996 53 icesjms Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford