Harvesting Methuselah's clams - is the geoduck fishery sustainable, or just apparently so? / J.M. (Lobo) Orensanz, Ray Hilborn and Anna M. Parma. : Fs70-1/2000-175E-PDF
Geoducks are very large and very long-lived bivalves, with potential life-spans well beyond 100 years. Such long life-spans should be expected to confer great stability to these populations. Information about the ecology and dynamics of geoduck populations in Washington State and British Columbia is re-examined, and the implications for stock assessment and management is explored. Strengths and shortcomings of the two management systems are identified, and urgently needed information is highlighted. The analyses suggest a long-term trend of declining recruitment over a large spatial scale, so that recent recruitment could be 40-50% of that during the 1930's. Recommendations are provided to further investigate this apparent phenomenon and the potential role played by fishing activities.
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publications.gc.ca/pub?id=9.806398&sl=1
| Ministère/Organisme | Canada. Department of Fisheries and Oceans. Canada. Canadian Stock Assessment Secretariat. |
|---|---|
| Titre | Harvesting Methuselah's clams - is the geoduck fishery sustainable, or just apparently so? / J.M. (Lobo) Orensanz, Ray Hilborn and Anna M. Parma. |
| Titre de la série | Canadian Stock Assessment Secretariat research document, 1480-4883 ; 2000/175 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Includes bibliographic references (p. 31-34). |
| Information sur la publication | Ottawa : Fisheries and Oceans Canada, 2000. |
| Auteur / Contributeur | Orensanz, J. M. Hilborn, Ray. Parma, Ana M.,1955- |
| Description | 68 p. : fig., graphs, maps, tables. |
| Numéro de catalogue |
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| Descripteurs | Fisheries resources Molluscs Fishing area Fisheries management |
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