Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)

Detalhes bibliográficos
Autor(a) principal: Sousa, Inês Isabel
Data de Publicação: 2011
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/2625
Resumo: Dissertação de mest., Biologia Marinha (Ecologia e Conservação Marinhas), Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2011
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spelling Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)Marine protected areasReserve effectArrábidaSoft bottomsDissertação de mest., Biologia Marinha (Ecologia e Conservação Marinhas), Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2011The Professor Luiz Saldanha Marine Park (PLSMP) is located in the central region of Portugal (Arrábida coast), comprising 38 km of coastline. It was established in 1998 and in August 2005 specific management measures were implemented. Three protection levels were established: Total – human activities not allowed; Partial - some fishing allowed with some gears (octopus traps, jigging, handline); Complementary - fishing allowed with vessels under 7m length and licensed to operate within the marine park. To monitor the reserve effect, in terms of abundance, biomass and also community composition, experimental fishing trials with trammel nets on soft bottoms have been conducted since 2007 (depths between 10 – 45m). The individuals caught were identified to species level, measured to the nearest mm and released when alive. The data (species abundance and biomass) were analyzed both with univariate and multivariate methods, allowing the comparison between the three protection levels. The data analysis showed higher values of Catch per Unit Effort (CPUE) in number and in weight for the Partial and Total protection areas when compared to the Complementary, where fishing with nets is allowed. Also the biodiversity indices (Margalef and Shannon-Wiener) showed higher values in these two areas. The multivariate analysis (ANOSIM) supports the previous results, in the sense that the communities from Partial and Total sections were found to be significantly different from the one found in the Complementary area. The SIMPER analysis showed that the bastard sole Microchirus azevia and the toadfish Halobatrachus didactylus are important contributors for the distinction of these communities. It was noticed that in assessing the reserve effect, the benefits of protection is differed from species to species. The analysis at the species level was important in the detection of trends that are probably related with the implemented protection measures. Namely the species Chelidonichthys lucerna, M. azevia and Raja clavata showed abundance increases from the first analyzed period (Aug. 2007 - Aug. 2009) to the second (Aug. 2009 - Aug. 2010), after the full implementation of the marine park. Besides the increase in abundance, C. lucerna and M. azevia also registered an increase in the median total length. Overall, the results suggest that the Partial and Total protection areas are important for several soft bottom species. The importance of protection level was confirmed by Gaussian GAM models, for both sandy and muddy bottom. This analysis also revealed water temperature as an important predictor of CPUE in weight. The results obtained include the first signs of a reserve effect concerning the soft bottoms of the Prof. Luiz Saldanha Marine Park. The protection measures, mainly the restriction on the use of trammel and gill nets, seem to benefit some bottom associated species. To better understand the reserve effect on the biodiversity and abundance of soft bottom communities, further sampling should be considered.Erzini, KarimGonçalves, JorgeSapientiaSousa, Inês Isabel2013-03-22T16:43:00Z20112011-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.1/2625eng574.5 SOU*Ass 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:RCAAP2023-07-24T10:13:42Zoai:sapientia.ualg.pt:10400.1/2625Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:56:27.495282Repositório 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 Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)
title Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)
spellingShingle Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)
Sousa, Inês Isabel
Marine protected areas
Reserve effect
Arrábida
Soft bottoms
title_short Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)
title_full Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)
title_fullStr Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)
title_full_unstemmed Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)
title_sort Assessment of reserve effect in a marine protected area: the case study of the Professor Luiz Saldanha Marine Park (Portugal)
author Sousa, Inês Isabel
author_facet Sousa, Inês Isabel
author_role author
dc.contributor.none.fl_str_mv Erzini, Karim
Gonçalves, Jorge
Sapientia
dc.contributor.author.fl_str_mv Sousa, Inês Isabel
dc.subject.por.fl_str_mv Marine protected areas
Reserve effect
Arrábida
Soft bottoms
topic Marine protected areas
Reserve effect
Arrábida
Soft bottoms
description Dissertação de mest., Biologia Marinha (Ecologia e Conservação Marinhas), Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2011
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-01-01T00:00:00Z
2013-03-22T16:43:00Z
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/10400.1/2625
url http://hdl.handle.net/10400.1/2625
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 574.5 SOU*Ass 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
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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