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Using an age-structured and partially-structured population dynamics model to evaluate the potential effects of area closures on stock rebuilding of North Atlantic swordfish


International Commission for the Conservation of Atlantic Tunas Collective Volume of Scientific Papers 55: 1597-1619
Using an age-structured and partially-structured population dynamics model to evaluate the potential effects of area closures on stock rebuilding of North Atlantic swordfish
The effectiveness of the established closed area in the western Atlantic and of closed areas in general, as a management tool for the regulation of the North Atlantic swordfish fishery and stock rebuilding is evaluated in this paper using an age-structured, fleet disaggregated population dynamics model. The model uses population dynamics model parameter inputs from recent stock assessments and the catch data to predict the current status of the stock with and without the established closed fishing areas. The future effects of the closed area on the status of the stock under the current stock-rebuilding plan and different assumptions for the size of the closed area, the age classes that it protects and the response of the fishery (i.e., the amount and spatial distribution of fishing effort) to the introduction of a closed area are also evaluated.


Accession: 022069706



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