TY - JOUR
T1 - Simulated response to harvesting strategies in an exploited ecosystem in the southwestern Gulf of Mexico
AU - Arreguin-Sanchez, Francisco
AU - Zetina-Rejón, Manuel
AU - Manickchand-Heileman, Sherry
AU - Ramírez-Rodríguez, Mauricio
AU - Vidal, Laura
N1 - Funding Information:
F.A.S., M.Z.R. and M.R.R. thank the National Council of Science and Technology, CONACyT, for support through project 34865-B, as well as the National Polytechnic Institute, Mexico, through CEGEPI-980056, CGPI-20020287, COFAA, EDI and PIFI. The publication was partly funded by the European Commission’s INCO-DC program through contract no. ERBIC18CT97175.
PY - 2004/3/1
Y1 - 2004/3/1
N2 - The impact of some optimized harvesting strategies on ecosystem structure was investigated using a mass-balanced model of the ecosystem in the southwestern Gulf of Mexico, where there are four types of artisanal fisheries and a shrimp fishery that has collapsed. The Ecopath with Ecosim software was used to simulate harvesting strategies aimed at optimizing economic (profit), social (jobs), ecological (conservation of ecosystem structure) and shrimp-recovery criteria. As expected, the ecosystem changes that would ensue vary according to the combination of optimization goals. We found that for some scenarios, the extraction of biomass from a discrete trophic-level changes impacting ecosystem and catch structure. This was clearly observed through the tendency of the mean trophic level of the ecosystem and catch, as well as the fishing-in-balance index (FBI). A particular discussion was made about the collapsed shrimp fishery, where the impact of a specific shrimp-recovery strategy was evaluated. Collapse is strongly associated to physical variables and recovery based on trophic relationships is plausible but with a high ecosystem structure cost.
AB - The impact of some optimized harvesting strategies on ecosystem structure was investigated using a mass-balanced model of the ecosystem in the southwestern Gulf of Mexico, where there are four types of artisanal fisheries and a shrimp fishery that has collapsed. The Ecopath with Ecosim software was used to simulate harvesting strategies aimed at optimizing economic (profit), social (jobs), ecological (conservation of ecosystem structure) and shrimp-recovery criteria. As expected, the ecosystem changes that would ensue vary according to the combination of optimization goals. We found that for some scenarios, the extraction of biomass from a discrete trophic-level changes impacting ecosystem and catch structure. This was clearly observed through the tendency of the mean trophic level of the ecosystem and catch, as well as the fishing-in-balance index (FBI). A particular discussion was made about the collapsed shrimp fishery, where the impact of a specific shrimp-recovery strategy was evaluated. Collapse is strongly associated to physical variables and recovery based on trophic relationships is plausible but with a high ecosystem structure cost.
KW - Ecosystem response
KW - Gulf of Mexico
KW - Harvesting strategies
KW - Shrimp collapse
UR - http://www.scopus.com/inward/record.url?scp=1242343851&partnerID=8YFLogxK
U2 - 10.1016/j.ecolmodel.2003.09.016
DO - 10.1016/j.ecolmodel.2003.09.016
M3 - Artículo
SN - 0304-3800
VL - 172
SP - 421
EP - 432
JO - Ecological Modelling
JF - Ecological Modelling
IS - 2-4
ER -