Estructura de la población, reclutamiento y modelos de distribución de Patella depressa Pennant, 1777 en la costa central de Portugal
Using in situ individual measurements at two levels of the shore during a one-year period, recruitment peaks of Patella depressa Pennant, 1777, possibly related to breeding periods, were identified during autumn-winter. Recruits were associated with lower levels on the shore, and juveniles mainly in...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2003 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/320029 |
| Acceso en línea: | http://hdl.handle.net/10261/320029 |
| Access Level: | acceso abierto |
| Palabra clave: | Medio Marino Lapa distribución de población modelo de reclutamiento crecimiento condiciones ambientales |
| Sumario: | Using in situ individual measurements at two levels of the shore during a one-year period, recruitment peaks of Patella depressa Pennant, 1777, possibly related to breeding periods, were identified during autumn-winter. Recruits were associated with lower levels on the shore, and juveniles mainly inhabited Mytilus galloprovincialis Lamarck, 1819 patches. Niche partitioning, intraspecific competition, and desiccation stress are discussed as decisive factors in the different size-class distributions found. A mark-recapture growth study was made at two substrata within study sites, one substratum with irregular depressions mainly composed of Chthamalus spp., and a second regular substratum comprising mostly bare rock. Our results indicated lower growth increments in the irregular substratum zone, probably due to space availability and limited foraging activity. |
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