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Abstract |
- Indicators are widely used in fisheries management decision process as
measures for monitoring ecosystem status or management performance. In
the current context, the shift to an ecosystem-based approach to fisheries
management requires to complete usual population or community
indicators with indicators reflecting state and dynamics of fishing activity
as well as economic viability. However, it is difficult for decision makers
to select relevant indicators among the numerous existing ones. In addition,
the complexity of the mechanisms involved makes the unequivocal
interpretation of indicator variations seldom possible using only statistical
models. We propose to resort to the ISIS-Fish fishery dynamics model to
select robust and relevant fishery indicators. ISIS-Fish population submodel
was set up to reproduce major processes of anchovy population
dynamics in space and time and surplus production models were used for
the other target species of the fishery. To take fishermen behavior into
account while modeling fleet dynamics, we considered a discrete choice
model using economical interest in the different possible métiers, fishers
habits and management constraints within a random utility modeling
framework. Applying sensitivity analysis methods, simulation designs were
built crossing a variety of management scenarios and uncertainty
hypotheses. Consequently, a list of resulting candidate metrics referring
both to population and fishing activities were computed and statistically
analyzed. Metrics that were the most sensitive to management and the most
robust to uncertainties were considered to be relevant and selected for
assessing management impact on the fishery.
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- Lehuta, Sigrid, Stéphanie Mahévas, Pascal Le Floc'h, Dominique Pelletier, Youen Vermard, Paul Marchal and Etienne Rivot. 2010. Fishery-Based indicators of Management Impact: Assessing Relevance and Robustness Using A Bio-Economic Simulation Model. In: Proceedings of the Fifteenth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 13-16, 2010, Montpellier, France: Economics of Fish Resources and Aquatic Ecosystems: Balancing Uses, Balancing Costs. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2010.
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Funding Statement (additional comments about funding) |
- US National Oceanic and Atmospheric Administration (NOAA) Fisheries Division, Agence Française de Développement, Ministère de l’Enseignement Supérieur et de la Recherche, Ministère de L’Alimentation de L’Agriculture et de la Pêche, Ministère de l’Énergie, du Développement Durable et de la Mer, La Région Languedoc Rouslilon, Département Hérault, Montpellier Agglomèration, The Department of Fisheries and Oceans, Canada, and AquaFish Collaborative Research Support Program (CRSP).
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Additional Information |
- description.provenance : Submitted by Amy Zhang (zhanga@onid.orst.edu) on 2013-05-21T16:18:33Z
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Previous issue date: 2010
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