Analysing the bycatch taxonomic structure changes from observers data on board Spanish purse seiners in the Indian Ocean
Latitudinal species richness gradients affecting marine species richness have been good described since 19 century (Gray, 2001). In this line there is a global latitudinal taxonomic structure, where the species-genus ratio or genus-family ratio are maximum in the equator (Krug et al., 2008). The cli...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/326629 |
| Acceso en línea: | http://hdl.handle.net/10261/326629 |
| Access Level: | acceso abierto |
| Palabra clave: | Centro Oceanográfico de Málaga Pesquerías |
| Sumario: | Latitudinal species richness gradients affecting marine species richness have been good described since 19 century (Gray, 2001). In this line there is a global latitudinal taxonomic structure, where the species-genus ratio or genus-family ratio are maximum in the equator (Krug et al., 2008). The climatic stability of the tropical seas has been proposed as the main mechanism explaining this pattern of species diversity (Gray, 2001). Thus, the taxonomic structure should be similar within of a latitudinal range for a temporal series. In spite of the supposed stability of the tropical regions, two processes can disturb marine ecosystems: industrial fishing and climate change. Industrial fishing has been proposed as an important anthropic factor that can influence the ecosystem by altering species diversity (Gewin, 2004). On the other hand, the planet is currently experiencing global warming (Oreskes, 2004), which could alter the specific composition of ecosystems and thus be reflected in fishing catches (Cheung et al., 2013). In this context, it is important to monitor the composition of catches from tropical regions in search of changes in taxonomic composition. The main aim of the present study was to test the taxonomic structure pattern of Spanish purse seine (PS) bycatch from Indian Ocean in the last 15 years, we do not expected any change in the time series |
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