000	02200nam  2200325za 4500
001	9.805968
003	CaOODSP
005	20221107135800
007	cr |||||||||||
008	150406s2000    oncd    ob   f000 0 eng d
040	|aCaOODSP|beng
041	|aeng|bfre
043	|an-cn---
086	1 |aFs70-1/2000-089E-PDF
100	1 |aShelton, P. A.
245	10|aNorthern cod recruitment before, during and after the collapse |h[electronic resource] / |cPeter A. Shelton and Don E. Stansbury.
260	|aOttawa : |bFisheries and Oceans Canada, |c2000.
300	|a18 p. : |bfig., graphs, tables.
490	1 |aCanadian Stock Assessment Secretariat research document, |x1480-4883 ; |v2000/089
504	|aIncludes bibliographical references (p. 8).
520	|aThis paper shows that clear recruitment signals are present in the research vessel and commercial catch at age data for northern cod from extension of jurisdiction to moratorium. There have been three main periods of strong recruitment, preceded and followed by brief periods of much lower recruitment. SPA provides good model fits to the first two pulses but is unable to reconcile survey and catch data with respect to the third pulse, under standard assumptions. This research document uses a diagnostic formulation that estimates unaccounted for deaths in the early 1990s to evaluate recruitment before and during the collapse. A relative recruitment strength series for the post-collapse period is reconstructed from a number of indices using an iterative reweighting procedure. Recruitment has decreased with the decline in spawner biomass and has been particularly low since the collapse.
692	07|2gccst|aFisheries resources
692	07|2gccst|aSalt water fish
692	07|2gccst|aFishing area
692	07|2gccst|aFisheries management
700	1 |aStansbury, D. E.
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 ; |v2000/089|w(CaOODSP)9.507740
856	40|qPDF|s88 KB|uhttps://publications.gc.ca/collections/collection_2015/mpo-dfo/Fs70-1-2000-089-eng.pdf