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Evaluating management strategies for marine mammal populations: an example for multiple species and multiple fishing sectors in Iceland
- Source :
- Canadian Journal of Fisheries and Aquatic Sciences. August, 2020, Vol. 77 Issue 8, p1316, 16 p.
- Publication Year :
- 2020
-
Abstract
- A management strategy evaluation (MSE) is used to estimate success at achieving conservation goals for marine mammals while also aiming to minimize impacts on commercial fisheries. It is intended to improve understanding of US import rules that require countries exporting fish and fish products to the USA to adhere to marine mammal bycatch standards 'comparable' to those used by the USA. The MSE framework is applied, for illustrative purposes, to export fisheries in Iceland that impact harbor porpoises (Phocoena phocoena), harbor seals (Phoca vitulina), and grey seals (Halichoerus grypus). Several management strategies are evaluated. The harbor porpoise population is estimated to be close to or above its maximum net productivity level (MNPL) and, according to the model, will continue to increase even if current levels of human-caused mortality are unchanged. In contrast, the grey seal and harbor seal populations are below MNPL, and bycatch mortality in the lumpfish (Cyclopterus lumpus) fishery will need to be reduced to allow them to recover to MNPL. Une evaluation des strategies de gestion (ESG) estutilisee pour estimer le succes vers l'atteinte d'objectifs de conservation des mammiferes marins visant aussi a minimiser les impacts sur les peches commerciales. L'objectif est d'ameliorer la comprehension des regles d'importation americaines qui exigent que les pays qui exportent des poissons et des produits du poisson vers les Etats-Unis respectent des normes concernant les prises accessoires de mammiferes marins << comparables >> aux normes utilisees par les EtatsUnis. Le cadre d'ESG est applique, a des fins d'illustration, aux peches vouees a l'exportation en Islande qui ont des impacts sur les marsouins communs (Phocoena phocoena), les phoques communs (Phoca vitulina) et les phoques gris (Halichoerus grypus). Plusieurs strategies de gestion sont evaluees. Il est estime que la population de marsouins communs se situe aux alentours ou au- dessus de son niveau de productivite nette maximum (NPNM) et, selon le modele, qu'elle continuera d'augmenter meme si les taux de mortalite causee par les humains demeurent inchanges. En revanche, les populations de phoques gris et de phoques communs sont sous leurs NPNM, et la mortalite associee aux prises accessoires dans la peche a la grosse poule de mer devra diminuer pour permettre un retour au NPNM. [Traduit par la Redaction]<br />Introduction There is a long history of deliberate exploitation of marine mammals worldwide. Although commercial whaling and sealing have declined mainly due to a combination of regulation and resource depletion, [...]
- Subjects :
- United States. National Oceanic and Atmospheric Administration -- International economic relations -- Management
Imports -- Laws, regulations, etc.
Strategic planning (Business) -- Protection and preservation
Marine mammals -- Protection and preservation
Fisheries -- International economic relations -- International trade
Fish industry -- International economic relations -- International trade
Company business management
Earth sciences
Marine Stewardship Council -- Management
Subjects
Details
- Language :
- English
- ISSN :
- 0706652X
- Volume :
- 77
- Issue :
- 8
- Database :
- Gale General OneFile
- Journal :
- Canadian Journal of Fisheries and Aquatic Sciences
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.630993346
- Full Text :
- https://doi.org/10.1139/cjfas-2019-0386