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Structure and temporal variations of fish assemblages of the Castro Marim salt marsh, southern Portugal

2006Journal article Restricted access
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dc.contributor.authorVeiga, Pedro
dc.contributor.authorVieira, Lina
dc.contributor.authorBexiga, Constança
dc.contributor.authorSá, Rita
dc.contributor.authorErzini, Karim
dc.date.accessioned2016-12-14T16:22:30Z
dc.date.available2016-12-14T16:22:30Z
dc.date.issued2006
dc.description.abstractWe studied the ichthyofauna of the Castro Marim salt marsh based on monthly sampling surveys at five sites between September 2000 and August 2001. Sampling took place at night during rising neap tides using a 40-m long beach seine. We sampled a total of 7955 fish specimens (37 995.7 g), comprising 34 species and 17 families. The occurrence of most species was occasional, with Pomatoschistus microps (51.9%) and Atherina spp. (10.3%) being the most abundant species, accounting for 62.2% of the total fish captured. Biomass was dominated by the marine species Liza ramado (15.9%), Mullus surmuletus (13.5%), and Liza aurata (13.4%). Temperature and salinity showed a seasonal pattern, with minimums during the winter months and maximums during the summer months. In contrast, river flow peaked in winter and was lowest during summer. This pattern in river flow appears to be correlated with variations in the fish assemblages, which present two distinct compositions during the two periods. A few species characterise the winter fish assemblage, with dominance by residents and the presence of freshwater species, while the summer assemblage is characterised by the presence of many marine visitors that use the salt marsh in their first months/years of life. Temporal variations in total abundance and biomass reflect fluctuations in the dominant species. Resident species presented the highest abundance values, while marine adventitious species and marine species that use the salt marsh as a nursery ground contributed most to community species richness. Castro Marim salt marsh constitutes an important ecosystem for fishes, providing habitat for many species, especially juveniles, which find conditions within the salt marsh suitable for their development. (c) 2006 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.ecss.2006.05.037
dc.identifier.issn0272-7714
dc.identifier.otherAUT: KER00534;
dc.identifier.urihttp://hdl.handle.net/10400.1/8834
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relation.isbasedonWOS:000241327200004
dc.titleStructure and temporal variations of fish assemblages of the Castro Marim salt marsh, southern Portugal
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUniv Algarve, Faro, PORTUGAL
oaire.citation.endPage38
oaire.citation.issue01-fev
oaire.citation.startPage27
oaire.citation.titleEstuarine, Coastal and Shelf Science
oaire.citation.volume70
person.familyNameVeiga
person.familyNameErzini
person.givenNamePedro
person.givenNameKarim
person.identifier.ciencia-id5A17-5F02-A52B
person.identifier.ciencia-idD917-7133-341A
person.identifier.orcid0000-0002-5256-6263
person.identifier.orcid0000-0002-1411-0126
person.identifier.ridD-5056-2009
person.identifier.ridM-5216-2013
person.identifier.scopus-author-id36875409700
person.identifier.scopus-author-id7004015948
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication0902f8ee-87af-4ee5-b18a-f8868ce2080f
relation.isAuthorOfPublicatione20f0e2d-3085-4c37-9e98-260dc9faddea
relation.isAuthorOfPublication.latestForDiscovery0902f8ee-87af-4ee5-b18a-f8868ce2080f

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