Distribution, abundance and habitat use of deep diving cetaceans in the North-East Atlantic

dc.contributor.authorRogan, Emer
dc.contributor.authorCañadas, Ana
dc.contributor.authorMacleod, Kelly
dc.contributor.authorSantos, M. Begoña
dc.contributor.authorMikkelsen, Bjarni
dc.contributor.authorUriarte, Ainhize
dc.contributor.authorVan Canneyt, Olivier
dc.contributor.authorVázquez, José Antonio
dc.contributor.authorHammond, Philip S.
dc.contributor.funderDepartment for Environment, Food and Rural Affairsen
dc.contributor.funderDepartment of Trade and Industryen
dc.contributor.funderUniversity College Corken
dc.contributor.funderBord Iascaigh Mhara, Ireland
dc.contributor.funderSociedad Española de Cetáceos
dc.contributor.funderEuropean Commission
dc.contributor.funderInstituto Español de Oceanografía, Spain
dc.contributor.funderMinisterio de Economía y Competitividad, Spain
dc.contributor.funderAZTI-Tecnalia, Spain
dc.contributor.funderDepartment of the Environment, Heritage & Local Government, Ireland
dc.contributor.funderFøroya Landsstýri , The Government of the Faroe Islands
dc.description.abstractIn spite of their oceanic habitat, deep diving cetacean species have been found to be affected by anthropogenic activities, with potential population impacts of high intensity sounds generated by naval research and oil prospecting receiving the most attention. Improving the knowledge of the distribution and abundance of this poorly known group is an essential prerequisite to inform mitigation strategies seeking to minimize their spatial and temporal overlap with human activities. We provide for the first time abundance estimates for five deep diving cetacean species (sperm whale, long-finned pilot whale, northern bottlenose whale, Cuvier's beaked whale and Sowerby's beaked whale) using data from three dedicated cetacean sighting surveys that covered the oceanic and shelf waters of the North-East Atlantic. Density surface modelling was used to obtain model-based estimates of abundance and to explore the physical and biological characteristics of the habitat used by these species. Distribution of all species was found to be significantly related to depth, distance from the 2000m depth contour, the contour index (a measure of variability in the seabed) and sea surface temperature. Predicted distribution maps also suggest that there is little spatial overlap between these species. Our results represent the best abundance estimates for deep-diving whales in the North-East Atlantic, predict areas of high density during summer and constitute important baseline information to guide future risk assessments of human activities on these species, evaluate potential spatial and temporal trends and inform EU Directives and future conservation efforts.en
dc.description.sponsorshipCODA funded by UK Department for Environment, Food & Rural Affairs; UK Department for Trade & Industry; Irish Department of the Environment, Heritage & Local Government; Irish Bord Iascaigh Mhara; Spanish Ministry of the Environment and Rural and Marine Affairs (via the Spanish Cetacean Society); Instituto Español de Oceanografía, AZTI Tecnalia; Marine Nationale France; University College, Cork. SCANS-II was funded by the EU LIFE Nature programme under Project LIFE04NAT/GB/000245 and by the governments of all range states: Belgium, Denmark, France, Germany, Ireland, Netherlands, Norway, Poland, Portugal, Spain, Sweden and UK. The survey in the Faroese block of T-NASS was funded by the Faroese government.en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.identifier.citationRogan, E., Cañadas, A., Macleod, K., Santos, M. B., Mikkelsen, B., Uriarte, A., Van Canneyt, O., Vázquez, J. A. and Hammond, P. S. (2017) 'Distribution, abundance and habitat use of deep diving cetaceans in the North-East Atlantic', Deep Sea Research Part II: Topical Studies in Oceanography, 141, pp. 8-19. doi:10.1016/j.dsr2.2017.03.015en
dc.identifier.journaltitleDeep Sea Research Part II: Topical Studies In Oceanographyen
dc.rights© 2017 Published by Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseen
dc.subjectDesign-based abundanceen
dc.subjectModel-based abundanceen
dc.subjectBeaked whalesen
dc.subjectSperm whalesen
dc.subjectPilot whalesen
dc.subjectDeep diversen
dc.subjectHabitat modelsen
dc.titleDistribution, abundance and habitat use of deep diving cetaceans in the North-East Atlanticen
dc.typeArticle (peer-reviewed)en
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