The potential impact of seal and seabird predation on North American Atlantic salmon / David K. Cairns and David G. Reddin. : Fs70-1/2000-012E-PDF
The main purpose of this paper is to determine whether seal and seabird predation could be of sufficient magnitude to cause, or be a major contributor to, the decline of North Atlantic salmon returns. It must be emphasized that the paper is an examination of plausibility only, because current data are insufficient to determine whether seals and seabirds are causative agents in the salmon decline. This purpose was achieved by a) estimating the numbers and biomass of post-smolt salmon in the sea, b) determining times and locations of salmon vulnerability to seal and seabird predation, c) reviewing available records of salmon predation by seals and seabirds, and d) determining whether current dietary sampling programs are adequate to measure salmon predation by seals and seabirds. Research endeavors likely to shed light on the effect of seal and seabird predation on salmon populations are also identified.
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publications.gc.ca/pub?id=9.805721&sl=1
| Ministère/Organisme | Canada. Department of Fisheries and Oceans, issuing body. Canada. Canadian Stock Assessment Secretariat, issuing body. |
|---|---|
| Titre | The potential impact of seal and seabird predation on North American Atlantic salmon / David K. Cairns and David G. Reddin. |
| Titre de la série | Canadian Stock Assessment Secretariat research document, 1480-4883 ; 2000/012 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Includes bibliographical references (8-12). |
| Information sur la publication | Ottawa : Fisheries and Oceans Canada, 2000. |
| Auteur / Contributeur | Cairns, David Kenneth, author. |
| Description | i, 34 p. : fig., graphs, tables. |
| Numéro de catalogue |
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| Descripteurs | Fisheries resources Salt water fish Seals Aquatic birds Fisheries management |
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