Attractive sinks, or how individual behavioural decisions determine source—sink dynamics
Gundersen et al. (2001, Source-sink dynamics: how sinks affect demography of sources. Ecol. Lett., 4, 14—21.) suggested that sinks can severely affect the demography of populations in source habitats. We propose this is a common result when animals lack cues associated with reduced fitness inside si...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2001 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/50341 |
| Acceso en línea: | http://hdl.handle.net/10261/50341 |
| Access Level: | acceso abierto |
| Palabra clave: | Attractive sinks deceptive sources Demography dispersal, ecological traps habitat selection metapopulations risk detection source—sink dynamics |
| Sumario: | Gundersen et al. (2001, Source-sink dynamics: how sinks affect demography of sources. Ecol. Lett., 4, 14—21.) suggested that sinks can severely affect the demography of populations in source habitats. We propose this is a common result when animals lack cues associated with reduced fitness inside sinks and consequently select habitat inappropriately. These attractive sinks can result either from undetected risks of mortality (as in the experiment of Gundersen et al. 2001) or from undetected poor breeding probabilities (due to bioaccumulation of pesticides, for instance). Thus, individual habitat choice is a key process underlying source—sink dynamics |
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