Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-22T02:55:33.962Z Has data issue: false hasContentIssue false
  • English
  • Français

Molluscan fauna in the freshwater tidal area of the River Minhoestuary, NW of Iberian Peninsula

Published online by Cambridge University Press:  15 February 2009

R. Sousa ,
L. Guilhermino  and
C. Antunes
R. Sousa
Affiliation:
CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 4050-123 Porto, Portugal. ICBAS, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Departamento de Estudos de Populações, Laboratório de Ecotoxicologia, Lg. Prof. Abel Salazar 2, 4099-003 Porto, Portugal.
L. Guilhermino
Affiliation:
CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 4050-123 Porto, Portugal. ICBAS, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Departamento de Estudos de Populações, Laboratório de Ecotoxicologia, Lg. Prof. Abel Salazar 2, 4099-003 Porto, Portugal.
C. Antunes
Affiliation:
CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 4050-123 Porto, Portugal.
Get access

Abstract

Ten species of molluscs were identified in the freshwater tidal area of the River Minho estuary. Species richness per site rangedfrom 1 to 9. Abundance ranged from 230 to 4130 individuals per m², with an average of 1412 individuals per m2. Corbiculafluminea(Müller, 1774) presented the highest density, corresponding to 88.7 % of the total specimens gathered, followed byPisidium amnicum (Müller, 1774) with 5.8 %. Biomass ranged from 17.0 to 249.6 g AFDW m-2, with an average of 99.8 gAFDW m-2. C. fluminea was the species dominating the total biomass (95.4 %), followed by Bithynia tentaculata (Linnaeus,1758) with 1.6 %. A multivariate analysis revealed a community with two distinct groups : one group almost or exclusivelyrepresented by C. fluminea, and another group with a more diverse assemblage.

Keywords

River Minho estuaryabundancebiomassmolluscsdiversityenvironmental factors
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 41 , Issue 2 , June 2005 , pp. 141 - 147
Copyright
© Université Paul Sabatier, 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)