Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management

Detalhes bibliográficos
Autor(a) principal: Mendão, Vera Isabel Marques
Data de Publicação: 2009
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/1489
Resumo: Tese de mestrado, Ecologia Marinha, 2009, Universidade de Lisboa, Faculdade de Ciências
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spelling Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their managementMamíferos aquáticosCetáceosImpacto ambientalTeses de mestradoTese de mestrado, Ecologia Marinha, 2009, Universidade de Lisboa, Faculdade de CiênciasResumo alargado em português disponível no documentoCetaceans are very complex in their biology and ecology, having particular habitat needs that influence their global and local distribution, such as oceanographic features and prey availability. Knowledge on specific habitat needs (essential environmental characteristics for the animals' survival) is of major importance for the definition of effective conservation goals and management measures. These species are vulnerable to pressures from human activities, for instance from whaling, fisheries and navigation, as well as those releasing contaminants or generating oceanic noise. The available information on cetacean habitat preferences and registered human activities impacts was compiled for North-East Atlantic cetaceans, from primary and secondary references, as presence/absence data matrices. These were analysed descriptively and through Correspondence and Classification Analyses. The habitat needs analyses produced a clear distinction between mysticetes (baleen whales) and odontocetes (toothed whales), and, in a less obvious way, two trends in the dispersion of the odontocetes. The characteristics influencing these distinctions were mainly related to feeding preferences, typical group size, reproductive seasonality and migratory patterns. Similarly, the human activities analysis showed the distinction between mysticetes and odontocetes, and among these, between beaked and sperm whales, and dolphins. Mysticetes were found to be mainly affected by whaling and noise from shipping; beaked and sperm whales by noise from seismic surveys and military activities; and dolphins by by-catch, whale-watching and collisions with ships. Given the increase of human impacts on marine ecosystems, several international, European, regional and local agreements and legislation have been agreed. In general, these aim to reduce and monitor human pressures on biodiversity, and they particularly promote the protection and conservation of cetaceans. Nevertheless, many of these instruments concern only the direct effects, while the indirect ones have been largely overlooked, due to the lack of reliable information from scientific research on both cetacean ecology and the secondary effects of many human activities. In addition, reduced cooperation between the various entities and governments is also a major difficulty. This study aimed to contribute with information on this subject and in the awareness of the urgency of the protection of these charismatic animals.Elliott, Michael AAssis, Carlos António da SilvaRepositório da Universidade de LisboaMendão, Vera Isabel Marques2010-07-27T08:58:37Z20092009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdftext/xmlhttp://hdl.handle.net/10451/1489enghttp://catalogo.ul.pt/F/?func=item-global&doc_library=ULB01&type=03&doc_number=000569095info: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:RCAAP2023-11-08T15:41:13Zoai:repositorio.ul.pt:10451/1489Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:28:07.337328Repositório 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 Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management
title Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management
spellingShingle Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management
Mendão, Vera Isabel Marques
Mamíferos aquáticos
Cetáceos
Impacto ambiental
Teses de mestrado
title_short Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management
title_full Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management
title_fullStr Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management
title_full_unstemmed Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management
title_sort Habitat needs of cetaceans in the North-East Atlantic in relation to human pressures and their management
author Mendão, Vera Isabel Marques
author_facet Mendão, Vera Isabel Marques
author_role author
dc.contributor.none.fl_str_mv Elliott, Michael A
Assis, Carlos António da Silva
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Mendão, Vera Isabel Marques
dc.subject.por.fl_str_mv Mamíferos aquáticos
Cetáceos
Impacto ambiental
Teses de mestrado
topic Mamíferos aquáticos
Cetáceos
Impacto ambiental
Teses de mestrado
description Tese de mestrado, Ecologia Marinha, 2009, Universidade de Lisboa, Faculdade de Ciências
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-01-01T00:00:00Z
2010-07-27T08:58:37Z
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/10451/1489
url http://hdl.handle.net/10451/1489
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://catalogo.ul.pt/F/?func=item-global&doc_library=ULB01&type=03&doc_number=000569095
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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