000	02793nam  2200325za 4500
001	9.805970
003	CaOODSP
005	20221107135800
007	cr |||||||||||
008	150406s2000    oncdb   ob   f000 0 eng d
040	|aCaOODSP|beng
041	|aeng|bfre
043	|an-cn---
086	1 |aFs70-1/2000-091E-PDF
100	1 |aLilly, G. R.,|d1945-
245	10|aDistribution and biomass of capelin, Arctic cod and sand lance on the northeast Newfoundland Shelf and Grand Bank as deduced from bottom-trawl surveys |h[electronic resource] / |cG.R. Lilly and M. Simpson.
260	|aOttawa : |bFisheries and Oceans Canada, |c2000.
300	|a39 p. : |bfig., graphs, maps.
490	1 |aCanadian Stock Assessment Secretariat research document, |x1480-4883 ; |v2000/091
504	|aIncludes bibliographical references (p. 9-11).
520	|aChanges in the distribution and trawlable biomass of capelin, Arctic cod and sand lance are deduced from their by-catches during standard resource assessment bottom-trawl surveys in Divisions 2J3KL during the autumn and in Divisions 3LNO during the spring. Three different bottom trawls were used during the study period and the estimates of biomass changed substantially with each change in gear. In particular, biomass estimates increased dramatically starting in the autumn of 1995 when the Engel 145 Hi-rise trawl was replaced by the Campelen 1800 shrimp trawl. There has been no attempt to conduct comparative fishing experiments for these three species with these two trawls, so the change in gear represents a break in the timeseries for each species. In general, Arctic cod were found mainly toward the coast in Divisions 2J3K, capelin were found throughout the area and exhibited seasonal changes in distribution, and sand lance were found only on the plateau of Grand Bank. The most notable changes in distribution involved a move toward the southeast in Division 2J3K by both capelin and Arctic cod in the early to mid-1990s. In 1998-1999 both species appeared to be returning to distributions seen in the 1980s. Other notable features include an increase in the trawlable biomass of Arctic cod in the early to mid-1990s and a decline in the trawlable biomass of capelin during the same period.
692	07|2gccst|aFisheries resources
692	07|2gccst|aSalt water fish
692	07|2gccst|aFishing area
692	07|2gccst|aFisheries management
700	1 |aSimpson, Mark.
710	1 |aCanada. |bDepartment of Fisheries and Oceans.
710	2 |aCanada.|bCanadian Stock Assessment Secretariat.
830	#0|aCanadian Stock Assessment Secretariat research document,|x1480-4883 ; |v2000/091|w(CaOODSP)9.507740
856	40|qPDF|s1.11 MB|uhttps://publications.gc.ca/collections/collection_2015/mpo-dfo/Fs70-1-2000-091-eng.pdf