00000nam 2200000za 4500 9.812804 CaOODSP 20221107141410 cr ||||||||||| 160314s1981 nkcdb ob f000 0 eng d CaOODSP eng eng fre n-cn-pi n-cn-qu n-cn-nk Fs97-6/1028E-PDF Koeller, Peter Arthur, 1946- Abundance and distribution of finfish and squid from E.E. Prince trawl surveys in the southern Gulf of St. Lawrence, 1970-79 [electronic resource] / by P.A. Koeller and M. LeGresley. St. Andrews, N.B. : Fisheries and Oceans Canada, 1981. iv, 56 p. : maps. Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; no. 1028 "August 1981." "This is the one hundred and forty-first Technical report from the Biological Station, St. Andrews, N.B." Includes bibliographical references. The abundance and distribution of finfish and squid as determined by 10 yr of random, stratified groundtrawl surveys in the southern Gulf of St. Lawrence are presented. A large increase in the abundance of cod and American plaice was the most important observed trend during the decade. These species dominate the groundfish community of the Gulf and accounted for 68% of the biomass estimates on the average. Three groups of fish were identified which occupy geographically different and hydrologically distinct areas. A small group of species is widely distributed, probably because they tolerate the extremely cold water that covers much of the area in September. A second group is found in the warm inshore areas. Most species in this group have a separate, apparently isolated population around the Magdalen Islands. The third group occupies the deeper, moderately warm water along the edge of the Laurentian Channel and is probably found in the unsampled areas of the channel's plain. Many species in this group concentrate at the northwestern and southeastern end of the channel area. Those to the southeast may be extensions of populations found along the northeastern edge of the Scotian Shelf. Includes abstract in French. gccst Aquatic ecosystems gccst Fisheries management LeGresley, M. Canada. Department of Fisheries and Oceans. Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; no. 1028 (CaOODSP)9.504449 PDF 4.43 MB https://publications.gc.ca/collections/collection_2016/mpo-dfo/Fs97-6-1028-eng.pdf