An update of the status of the witch flounder resource in NAFO divisions 2J, 3K and 3L / by W.R. Bowering. : Fs70-8/87-33E-PDF
"Catches of witch flounder in Div. 2J, 3K and 3L peaked at about 24,000 t in 1973, declined almost steadily to 1980 at about 3500 t, and remained stable to 1985. The 1986 catch of 1300 t is the lowest reported catch in more than 20 years. A biomass estimate for 1986 for the three divisions combined as determined from fall surveys indicates a minimum trawlable biomass of 25,000 t which is low compared to recent years. Age compositions from both research and commercial samples indicate a stable age structure in recent years at low levels of fishing pressure and despite this the age span has not increased. Long-term estimates of mortality suggest that fishing mortality in the late 1970's was probably 2-3 times the F0.1 level of 0.30"--Abstract, page 2.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.895586&sl=1
| Ministère/Organisme | Canadian Atlantic Fisheries Scientific Advisory Committee, issuing body. Canada. Department of Fisheries and Oceans. Science, issuing body. |
|---|---|
| Titre | An update of the status of the witch flounder resource in NAFO divisions 2J, 3K and 3L / by W.R. Bowering. |
| Titre de la série | CAFSAC research document ; no. 87/33 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Cover title. "Not to be cited without permission of the authors." Includes abstract and series statement in French. |
| Information sur la publication | [Dartmouth, N.S.] : Canadian Atlantic Fisheries Scientific Advisory Committee ; St. John's, Newfoundland : Department of Fisheries and Oceans, Science Branch, [1987?] |
| Auteur / Contributeur | Bowering, W. R. (William Raymond), 1950- author. |
| Description | 1 online resource (17 pages) : graphs. |
| Numéro de catalogue |
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| Descripteurs | Glyptocephalus cynoglossus fisheries -- Newfoundland and Labrador. Fish stock assessment -- Newfoundland and Labrador. Plie grise -- Pêche commerciale -- Terre-Neuve-et-Labrador. Ressources halieutiques -- Évaluation -- Terre-Neuve-et-Labrador. |
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