Ecological indicators and gear-based management of Algarve coastal fisheries

Detalhes bibliográficos
Autor(a) principal: Conduto, Telma Lúcia Pereira dos Santos Coelho
Data de Publicação: 2007
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/636
Resumo: Dissertação mest., Aquacultura e Pescas, Universidade do Algarve, 2007
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spelling Ecological indicators and gear-based management of Algarve coastal fisheriesTesesPescasAquaculturaEcologiaIndicadoresGestãoSustentabilidadeEnvolvimentoPortugalDissertação mest., Aquacultura e Pescas, Universidade do Algarve, 2007A number of ecological indicators were used to study the impact of fishing gear on the Algarve marine ecosystem. Catch composition, species richness, diversity, mean length, trophic level, percentage of mature and optimum sized fish and percentage of megaspawners were determined for the fish catches of each gear type. Four types of static gears (gill nets, trammel nets, bottom longline and semi-pelagic longline) with different mesh sizes or hook sizes represented the small-scale fisheries and were studied using data from experimental fishing trials, while commercial catches of two trawling types, crustacean trawling and fish trawling exemplified the industrial fisheries. Different species dominated the catches of the different main gears. Gill nets were clearly differentiated by the low trophic levels. Semi-pelagic longline caught larger fish with high trophic levels. Trammel nets also had high percentage of mature individuals in the catches, but also more non-target species. The trawlers affected juveniles of many species. Larger mesh sizes caught larger individuals, though not necessarily mature. The ordination procedure revealed how gear catches are best characterized by the different indicators and catch composition. Technical interactions were apparent when some gears affected juveniles of target species of other gears. Management recommendations such as minimum legal size, closed areas, gear restrictions and modifications are provided. Fishers participation in management can be enhanced by explanations of these simple indicators. Public participation can be extremely important for supporting unpopular management measures.Erzini, KarimSapientiaConduto, Telma Lúcia Pereira dos Santos Coelho2011-09-07T16:05:11Z20072007-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfhttp://hdl.handle.net/10400.1/636eng639.2 CON*Eco Caveinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:11:26Zoai:sapientia.ualg.pt:10400.1/636Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:54:58.133396Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Ecological indicators and gear-based management of Algarve coastal fisheries
title Ecological indicators and gear-based management of Algarve coastal fisheries
spellingShingle Ecological indicators and gear-based management of Algarve coastal fisheries
Conduto, Telma Lúcia Pereira dos Santos Coelho
Teses
Pescas
Aquacultura
Ecologia
Indicadores
Gestão
Sustentabilidade
Envolvimento
Portugal
title_short Ecological indicators and gear-based management of Algarve coastal fisheries
title_full Ecological indicators and gear-based management of Algarve coastal fisheries
title_fullStr Ecological indicators and gear-based management of Algarve coastal fisheries
title_full_unstemmed Ecological indicators and gear-based management of Algarve coastal fisheries
title_sort Ecological indicators and gear-based management of Algarve coastal fisheries
author Conduto, Telma Lúcia Pereira dos Santos Coelho
author_facet Conduto, Telma Lúcia Pereira dos Santos Coelho
author_role author
dc.contributor.none.fl_str_mv Erzini, Karim
Sapientia
dc.contributor.author.fl_str_mv Conduto, Telma Lúcia Pereira dos Santos Coelho
dc.subject.por.fl_str_mv Teses
Pescas
Aquacultura
Ecologia
Indicadores
Gestão
Sustentabilidade
Envolvimento
Portugal
topic Teses
Pescas
Aquacultura
Ecologia
Indicadores
Gestão
Sustentabilidade
Envolvimento
Portugal
description Dissertação mest., Aquacultura e Pescas, Universidade do Algarve, 2007
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-01-01T00:00:00Z
2011-09-07T16:05:11Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/636
url http://hdl.handle.net/10400.1/636
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 639.2 CON*Eco Cave
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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