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Estudio comparativo de la macrofauna bentonica de un fondo de Zostrea marina y un fondo arenoso libre de cubierta vegetal = Comparative study of benthic macrofauna collected from sediments within a seagrass bed (Zostera marina) and an adjacent unvegetable area
Currás, A.; Sánchez-Mata, A.; Mora, J. (1993). Estudio comparativo de la macrofauna bentonica de un fondo de Zostrea marina y un fondo arenoso libre de cubierta vegetal = Comparative study of benthic macrofauna collected from sediments within a seagrass bed (Zostera marina) and an adjacent unvegetable area. Cah. Biol. Mar. 35(1): 91-112
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Currás, A.
  • Sánchez-Mata, A.
  • Mora, J.

Abstract
    Intertidal samples were collected from sediments within a seagrass bed (Zostera marina) and an adjacent unvegetated area in the Eo Estuary (NW Spain) during one year. The vegetated site was characterized by the highest densities, species richness and biomass of the macrofauna from that found at bare substrates. Sediments were coarser in the bare sand than in the grassbed. Trophic structure is also influenced by the eelgrass: deposit-feeders showed their highest abundance in the seagrass bed whilst carnivores and suspension-feeders were more abundant in the unvegetated area. Ordination analysis and correlations between physico-chemical parameters and samples reveal that organic matter, fine sands, silt and clay contents, are the discriminant factors in species spatial distribution. Species temporal fluctuations as a function of seasonality has been found as well.

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