Universidade de Lisboa Repositório da Universidade de Lisboa

Repositório da Universidade de Lisboa >
Faculdade de Ciências (FC) >
FC - Dissertações de Mestrado >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10451/1262

Title: Spatial distribution of cetaceans in the Bay of Biscay and implications of the Marine Strategy Directive for their conservation
Authors: Andrade Marina Isabel Laborde Basto de
Advisor: Cabral, Henrique N.
Keywords: Mamíferos aquáticos
Cetáceos
Teses de mestrado
Issue Date: 2008
Abstract: Resumo alargado disponível em português
European seas are subjected to continuous degradation and cetaceans, in particular, are vulnerable to several threats, being the fisheries bycatch and the climate change the greatest ones. The Bay of Biscay has been found to be the centre of highest cetacean diversity in the Northeast Atlantic. In response to these problems concerning the state of the marine environment, in June 2008, the UE established the Marine Strategy Framework Directive (MSFD), which aims to achieve a good environmental status' by 2020. Hence, a requirement arises for ecological indicators based on an ecosystem approach. In this context, this study, relying on data from CODA project, proposes to investigate the summer spatial distribution of cetaceans in the offshore waters of the Bay of Biscay, using physiographic and remotely-sensed oceanographic variables. During the survey, 13 cetacean species were identified, being the most frequent, the fin whale and the common dolphin. A higher species richness was evident over the submarine canyons. Distribution of the three most sighted species (fin whale, common and striped dolphins) was modelled spatially, using generalised additive models, in relation to environmental features. Spatial segregation was clear, with dolphins distributed in the inner part of the Bay, and the whales towards West with special incidence around the Galician Bank. These results permit the identification of potential cetacean hotspots' in the Bay of Biscay region, enabling the establishment of marine protected areas. Cetaceans do have a great potential to act as indicator species and may be valuable assets for planning, promoting, and implementing MPAs. Their use as ecological indicators should be accomplished with other studies where different metrics are applied, also based on other taxonomic groups, which combined will provide a comprehensive panorama of the environmental status of the marine ecosystem to achieve the conservation objectives of the MSFD and comply with management plans for the Bay of Biscay
Description: Tese de mestrado, Biologia (Biologia da Conservação), 2008, Universidade de Lisboa, Faculdade de Ciências
URI: http://catalogo.ul.pt/F/?func=item-global&doc_library=ULB01&type=03&doc_number=000561594
http://hdl.handle.net/10451/1262
Appears in Collections:FC - Dissertações de Mestrado

Files in This Item:

File Description SizeFormat
19064_ulfc080483_tm.pdf6.23 MBAdobe PDFView/Open
Statistics
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

  © Universidade de Lisboa / SIBUL
Alameda da Universidade | Cidade Universitária | 1649-004 Lisboa | Portugal
Tel. +351 217967624 | Fax +351 217933624 | repositorio@reitoria.ul.pt - Feedback - Statistics
DeGóis
  Estamos no RCAAP Governo Português separator Ministério da Educação e Ciência   Fundação para a Ciência e a Tecnologia

Financiado por:

POS_C UE