Modelling the use of two fishery access rights, concessions and licences, in the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery at Santo Tomás, Baja California, Mexico
Various stages of the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery were simulated to evaluate the effect of two types of access rights under Mexican law: concessions and licences. The resource biomass was evaluated using the critical depensation and Schaefer models. Each model...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2004-03-01
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| Series: | Ciencias Marinas |
| Subjects: | |
| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/343 |
| _version_ | 1797279426035056640 |
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| author | Evlin Ramírez-Félix Héctor G Manzano-Monroy |
| author_facet | Evlin Ramírez-Félix Héctor G Manzano-Monroy |
| author_sort | Evlin Ramírez-Félix |
| collection | DOAJ |
| description |
Various stages of the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery were simulated to evaluate the effect of two types of access rights under Mexican law: concessions and licences. The resource biomass was evaluated using the critical depensation and Schaefer models. Each model was evaluated as a static or dynamic system. The parameters required for each model were determined from government data and by generating stochastic numbers using the Monte Carlo method to adjust to a dynamic model. In general, both models predicted catches smaller than those observed. The five-year-period simulation for both models showed a drop in biomass when licences are issued, whereas a similar simulation for concessions resulted in increased biomass, except when high temperatures occurred. Our results suggest that issuing concessions rather than licences is the best option to conserve the fishery.
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| first_indexed | 2024-03-07T16:25:09Z |
| format | Article |
| id | doaj.art-e23cec78a025422f9bc93dcf0e586cce |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:25:09Z |
| publishDate | 2004-03-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-e23cec78a025422f9bc93dcf0e586cce2024-03-03T18:37:43ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532004-03-0130410.7773/cm.v30i4.343Modelling the use of two fishery access rights, concessions and licences, in the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery at Santo Tomás, Baja California, MexicoEvlin Ramírez-Félix0Héctor G Manzano-Monroy1Dirección General de Investigación Pesquera en el Pacífico NorteUniversidad Autónoma de Baja California Various stages of the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery were simulated to evaluate the effect of two types of access rights under Mexican law: concessions and licences. The resource biomass was evaluated using the critical depensation and Schaefer models. Each model was evaluated as a static or dynamic system. The parameters required for each model were determined from government data and by generating stochastic numbers using the Monte Carlo method to adjust to a dynamic model. In general, both models predicted catches smaller than those observed. The five-year-period simulation for both models showed a drop in biomass when licences are issued, whereas a similar simulation for concessions resulted in increased biomass, except when high temperatures occurred. Our results suggest that issuing concessions rather than licences is the best option to conserve the fishery. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/343red sea urchinAllee effectcritical depensationSchaeferBayesconcessions |
| spellingShingle | Evlin Ramírez-Félix Héctor G Manzano-Monroy Modelling the use of two fishery access rights, concessions and licences, in the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery at Santo Tomás, Baja California, Mexico Ciencias Marinas red sea urchin Allee effect critical depensation Schaefer Bayes concessions |
| title | Modelling the use of two fishery access rights, concessions and licences, in the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery at Santo Tomás, Baja California, Mexico |
| title_full | Modelling the use of two fishery access rights, concessions and licences, in the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery at Santo Tomás, Baja California, Mexico |
| title_fullStr | Modelling the use of two fishery access rights, concessions and licences, in the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery at Santo Tomás, Baja California, Mexico |
| title_full_unstemmed | Modelling the use of two fishery access rights, concessions and licences, in the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery at Santo Tomás, Baja California, Mexico |
| title_short | Modelling the use of two fishery access rights, concessions and licences, in the red sea urchin, Strongylocentrotus franciscanus (Agassiz), fishery at Santo Tomás, Baja California, Mexico |
| title_sort | modelling the use of two fishery access rights concessions and licences in the red sea urchin strongylocentrotus franciscanus agassiz fishery at santo tomas baja california mexico |
| topic | red sea urchin Allee effect critical depensation Schaefer Bayes concessions |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/343 |
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