Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis

Detalhes bibliográficos
Autor(a) principal: Alves, Filipe
Data de Publicação: 2003
Outros Autores: Chícharo, Luís, Nogueira, António, Regala, J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10400.1/5036
Resumo: Patterns in community structure of meiofauna and macrofauna in relation to Portuguese clam dredging were compared during a 2-y-period o¡ Lagos and Vilamoura, south Portugal. SCUBA divers randomly sampled corer and quadrat samples before and immediately after simulating commercial dredge ¢shery. Univariate measures (abundance, number of taxa, evenness, diversity and biomass) and multivariate analyses (Cluster, MDS and SIMPER) revealed changes in the meio- and macro-benthic community structure caused by dredge disturbance (short-term e¡ects), with a general decrease in all measures.Macrofauna were found to be more sensitive to dredge disturbance, and aggressive predatory behaviour was observed after disturbance in the continuously dredged area. Nevertheless, higher signi¢cant natural changes were found between seasonal periods, indicating that dredging may only cause a small-scale and short-term impact.
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spelling Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysisPatterns in community structure of meiofauna and macrofauna in relation to Portuguese clam dredging were compared during a 2-y-period o¡ Lagos and Vilamoura, south Portugal. SCUBA divers randomly sampled corer and quadrat samples before and immediately after simulating commercial dredge ¢shery. Univariate measures (abundance, number of taxa, evenness, diversity and biomass) and multivariate analyses (Cluster, MDS and SIMPER) revealed changes in the meio- and macro-benthic community structure caused by dredge disturbance (short-term e¡ects), with a general decrease in all measures.Macrofauna were found to be more sensitive to dredge disturbance, and aggressive predatory behaviour was observed after disturbance in the continuously dredged area. Nevertheless, higher signi¢cant natural changes were found between seasonal periods, indicating that dredging may only cause a small-scale and short-term impact.Cambridge University PressSapientiaAlves, FilipeChícharo, LuísNogueira, AntónioRegala, J.2014-09-22T13:00:10Z2003-08-012014-09-19T15:40:21Z2003-08-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/5036eng0025-3154AUT: LCH00360;info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-02-18T17:27:19Zoai:sapientia.ualg.pt:10400.1/5036Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T20:22:57.599865Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis
title Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis
spellingShingle Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis
Alves, Filipe
title_short Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis
title_full Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis
title_fullStr Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis
title_full_unstemmed Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis
title_sort Changes in benthic community structure due to clam dredging on the Algarve coast and the importance of seasonal analysis
author Alves, Filipe
author_facet Alves, Filipe
Chícharo, Luís
Nogueira, António
Regala, J.
author_role author
author2 Chícharo, Luís
Nogueira, António
Regala, J.
author2_role author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Alves, Filipe
Chícharo, Luís
Nogueira, António
Regala, J.
description Patterns in community structure of meiofauna and macrofauna in relation to Portuguese clam dredging were compared during a 2-y-period o¡ Lagos and Vilamoura, south Portugal. SCUBA divers randomly sampled corer and quadrat samples before and immediately after simulating commercial dredge ¢shery. Univariate measures (abundance, number of taxa, evenness, diversity and biomass) and multivariate analyses (Cluster, MDS and SIMPER) revealed changes in the meio- and macro-benthic community structure caused by dredge disturbance (short-term e¡ects), with a general decrease in all measures.Macrofauna were found to be more sensitive to dredge disturbance, and aggressive predatory behaviour was observed after disturbance in the continuously dredged area. Nevertheless, higher signi¢cant natural changes were found between seasonal periods, indicating that dredging may only cause a small-scale and short-term impact.
publishDate 2003
dc.date.none.fl_str_mv 2003-08-01
2003-08-01T00:00:00Z
2014-09-22T13:00:10Z
2014-09-19T15:40:21Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/5036
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dc.language.iso.fl_str_mv eng
language eng
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AUT: LCH00360;
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dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
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