Habitat-based model and stock-recruit productivity estimates for coho salmon in Georgia Strait mainland, Georgia Strait Vancouver Island and lower Fraser management units / C.A.J. Noble, J. Korman and... : Fs70-5/2015-050E-PDF
Identifying biological reference points or benchmarks for management of Coho Salmon is a critical component of the Wild Salmon Policy, and key to sustainable fishery management; yet data and budget restrictions limit the use of traditional stock recruit methods to identify benchmarks. A habitat-based model and Bayesian stock-recruit and stock-smolt analysis was combined to estimate average CU smolt production and the number of spawners required to achieve this, as well as stock productivity parameters and three potential benchmarks (Umsy, Smsy and Sgen) for wild (non-enhanced) Coho Salmon populations. Stock recruit analyses were conducted using both Beverton-Holt and Logistic Hockey Stick models and spawner-to-smolt and spawner-to-recruit data sets. Stream length accessible to Coho Salmon was determined from terrain resource inventory maps (TRIM) using GIS and maps at 1:20,000 scale. Stream order, gradient and known barriers were used to define the accessible length of stream. The number of smolts per kilometer was derived using a log-linear predictive regression of smolt yield given stream length for 22 streams within the CUs of interest.
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| Ministère/Organisme | Canada. Department of Fisheries and Oceans, issuing body. Canadian Science Advisory Secretariat, issuing body. |
|---|---|
| Titre | Habitat-based model and stock-recruit productivity estimates for coho salmon in Georgia Strait mainland, Georgia Strait Vancouver Island and lower Fraser management units / C.A.J. Noble, J. Korman and R. Bocking. |
| Variante du titre | Modèle fondé sur l'habitat et estimations de la productivité stock-recrutement du saumon coho dans les zones de gestion du détroit de Georgie (continent), du détroit de Georgie (île de Vancouver) et du bas Fraser |
| Titre de la série | Canadian Science Advisory Secretariat research document, 1919-5044 ; 2015/050, Pacific Region |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | "December 2015." Includes bibliographic references (p. 23-27). |
| Information sur la publication | Ottawa : Fisheries and Oceans Canada, 2015. |
| Auteur / Contributeur | Noble, C. A. J., author. |
| Description | x, 91 p. : fig., graphs, maps, tables. |
| Numéro de catalogue |
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| Descripteurs | Fisheries resources Salt water fish Fishing area Fisheries management |
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