Variaciones de las características estructurales de la comunidad de poliquetos asociada a dos fondos de maërl del litoral alicantino (sudeste de la península Ibérica)
Maërl beds are formed by rhodophyte calcareous algae belonging to the families Corallinacea and Peyssonneliacea. These beds appear in temperate and tropical areas. In the Mediterranean Sea they show a patchy, very localised distribution in the circalittoral zone. They are characterized by a high alg...
| 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:10261/320034 |
| Acceso en línea: | http://hdl.handle.net/10261/320034 |
| Access Level: | acceso abierto |
| Palabra clave: | Medio Marino Macrobentos poliquetos fondos de maërl estructura de la comunidad Mediterráneo occidental |
| Sumario: | Maërl beds are formed by rhodophyte calcareous algae belonging to the families Corallinacea and Peyssonneliacea. These beds appear in temperate and tropical areas. In the Mediterranean Sea they show a patchy, very localised distribution in the circalittoral zone. They are characterized by a high algal richness, specific faunal composition, and high biodiversity. The present study compares the polychaete assemblages associated to maërl beds at two different localities in southwestern Mediterranean, during 1996 and 1998. The first locality, located in the Tabarca Island Marine Reserve, is dominated by the calcareous algae Lithothamnion minervae Basso, 1995 and Lithophyllum duckeri Woelkerling, 1983. The second locality (Benidorm Island) is subject to trawling activity pressure, and is dominated by Peyssonnelia spp. and Lithothamnion coralloides Crouan Frat., 1867. Spatial -between localities, and among sites within localities- and temporal -between years, and among seasons within years- variation in the assemblage structure (represented by their abundance, richness, and diversity) have been studied. Our data revelead differences between localities in the structural composition. The Tabarca assemblage appears more structured, with presence of families typical of rocky substrates, such as Eunicidae and Syllidae, both characteristics of non disturbed zones. On the other hand, the locality of Benidorm is dominated by sediment-feeder families, typical of disturbed areas, such as Maldanidae, or indicative of slight level of disturbance, such as the family Onuphidae. |
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