Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys

Detalhes bibliográficos
Autor(a) principal: Araújo, Hélder
Data de Publicação: 2022
Outros Autores: Rodrigues, Pedro, Bastos-Santos, Jorge, Ferreira, Marisa, Pereira, Andreia, Martínez-Cedeira, José, Vingada, José, Eira, Catarina
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.22/22253
Resumo: AUTHOR CONTRIBUTIONS - Study conception HA and CE; Investigation HA, PCR, jBS, MF, ATP, JMC, JV and CE; Methodology HA, PCR, JBS, JV and CE; Resources HA, JBS, JV and CE; Data curation HA, PCR, JBS, JV; Writing initial draft HA; Writing critical review and commentary of revision HA, PCR, jBS, MF, ATP, JMC and CE; Supervision PCR, JV and CE; Project Administration JV and CE.
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spelling Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial SurveysDistance SamplingMaxentMorus bassanusAUTHOR CONTRIBUTIONS - Study conception HA and CE; Investigation HA, PCR, jBS, MF, ATP, JMC, JV and CE; Methodology HA, PCR, JBS, JV and CE; Resources HA, JBS, JV and CE; Data curation HA, PCR, JBS, JV; Writing initial draft HA; Writing critical review and commentary of revision HA, PCR, jBS, MF, ATP, JMC and CE; Supervision PCR, JV and CE; Project Administration JV and CE.Several North Atlantic breeding seabirds, such as the Northern Gannet Morus bassanus, use Western Iberian Waters for wintering and migration. In this study, we aimed at producing absolute population estimates of post-breeding Gannets and evaluating the importance of the study area within the species’ migration range. We performed six aerial surveys in September and/or October each year between 2010 and 2015, covering 74,840km2 in total. Using line transect methodology, 3,672 Gannet sightings were recorded along 10,496.3 nautical miles (nm). Immature individuals and adults comprised approximately 87% of all sightings. Using Distance sampling, overall abundance was estimated at 89,930 birds, ranging from 58,010 individuals in 2014 to 128,140 in 2015. the highest densities per sector areas were recorded in the North and Centre sectors whereas the lowest densities were registered in the Galicia sector, the Spanish region within the study area. Gannets were mostly present in shallow shelf waters of the continental shelf, particularly between 3 and 20 nautical miles offshore. Habitat suitability models for Gannets in the study area were tested using several eco-geographical variables and chlorophyll concentrations were found to contribute most to explaining annual Gannet occurrence probabilities. A global interannual spatial analysis demonstrated the core areas for conservation of the Northern Gannet in Western Iberian Waters. Moreover, our results demonstrate that Western Iberian waters are used by almost 10% of the global Northern Gannet population, corroborating the existence of seabird hotspots during the non-breeding period, along migration corridors and at their wintering grounds.SEORepositório Científico do Instituto Politécnico do PortoAraújo, HélderRodrigues, PedroBastos-Santos, JorgeFerreira, MarisaPereira, AndreiaMartínez-Cedeira, JoséVingada, JoséEira, Catarina2023-02-13T16:31:43Z20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.22/22253eng10.13157/arla.69.2.2022.ra1info: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:RCAAP2023-03-13T13:18:52Zoai:recipp.ipp.pt:10400.22/22253Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:42:19.274336Repositório 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 Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys
title Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys
spellingShingle Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys
Araújo, Hélder
Distance Sampling
Maxent
Morus bassanus
title_short Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys
title_full Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys
title_fullStr Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys
title_full_unstemmed Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys
title_sort Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys
author Araújo, Hélder
author_facet Araújo, Hélder
Rodrigues, Pedro
Bastos-Santos, Jorge
Ferreira, Marisa
Pereira, Andreia
Martínez-Cedeira, José
Vingada, José
Eira, Catarina
author_role author
author2 Rodrigues, Pedro
Bastos-Santos, Jorge
Ferreira, Marisa
Pereira, Andreia
Martínez-Cedeira, José
Vingada, José
Eira, Catarina
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório Científico do Instituto Politécnico do Porto
dc.contributor.author.fl_str_mv Araújo, Hélder
Rodrigues, Pedro
Bastos-Santos, Jorge
Ferreira, Marisa
Pereira, Andreia
Martínez-Cedeira, José
Vingada, José
Eira, Catarina
dc.subject.por.fl_str_mv Distance Sampling
Maxent
Morus bassanus
topic Distance Sampling
Maxent
Morus bassanus
description AUTHOR CONTRIBUTIONS - Study conception HA and CE; Investigation HA, PCR, jBS, MF, ATP, JMC, JV and CE; Methodology HA, PCR, JBS, JV and CE; Resources HA, JBS, JV and CE; Data curation HA, PCR, JBS, JV; Writing initial draft HA; Writing critical review and commentary of revision HA, PCR, jBS, MF, ATP, JMC and CE; Supervision PCR, JV and CE; Project Administration JV and CE.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-01-01T00:00:00Z
2023-02-13T16:31:43Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.22/22253
url http://hdl.handle.net/10400.22/22253
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.13157/arla.69.2.2022.ra1
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.publisher.none.fl_str_mv SEO
publisher.none.fl_str_mv SEO
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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