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Patterns of distribution of the polychaete fauna in subtidal soft sediments of the Ría de Aldán (north-western Spain)

Published online by Cambridge University Press:  25 March 2008

Antía Lourido*
Affiliation:
Departamento de Ecología Biología Animal, Facultad de Ciencias del Mar, Campus de Lagoas-Marcosende s/n, Universidade de Vigo, 36310 Vigo, Spain
Eva Cacabelos
Affiliation:
Departamento de Ecología Biología Animal, Facultad de Ciencias del Mar, Campus de Lagoas-Marcosende s/n, Universidade de Vigo, 36310 Vigo, Spain Netherlands Institute of Ecology (NIOO-KNAW), Korringaweg 7, 4401 NT Yerseke, The Netherlands
Jesús S. Troncoso
Affiliation:
Departamento de Ecología Biología Animal, Facultad de Ciencias del Mar, Campus de Lagoas-Marcosende s/n, Universidade de Vigo, 36310 Vigo, Spain
*
Correspondence Should be addressed to: Antía Lourido Departamento de Ecología Biología AnimalFacultad de Ciencias del Mar Campus de Lagoas-Marcosende s/n Universidade de Vigo, 36310 VigoSpain email: antial@uvigo.es

Abstract

The composition and spatial distribution of the polychaete fauna on the subtidal soft sediments of the Ría de Aldán (Galicia, north-western Spain) were studied by means of quantitative sampling and multivariate analysis. The faunal distribution was mainly conditioned by a sediment gradient defined by decreasing grain size, from the mouth towards the inner margins of the ría. The coarse and medium sand fauna was mainly dominated by pisionids, spionids and syllids. Finer sediments (fine sand to mud) showed a greater abundance of paraonids, spionids and cirratulids and deposit feeding species. The greatest number of species and diversity were found in coarse sediments.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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