Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.

Predicting the impact of human activities and their derivable consequences, such as global warming or direct wildlife mortality, is increasingly relevant in our changing world. Due to their particular life history traits, long-lived migrants are amongst the most endangered and sensitive group of ani...

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Autores principales:	Raül Ramos, José Pedro Granadeiro, Marie Nevoux, Jean-Louis Mougin, Maria Peixe Dias, Paulo Catry
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/162e6fa4deeb4230b025db8257ee22f1
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spelling	oai:doaj.org-article:162e6fa4deeb4230b025db8257ee22f12021-11-18T07:12:22ZCombined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.1932-620310.1371/journal.pone.0040822https://doaj.org/article/162e6fa4deeb4230b025db8257ee22f12012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22815833/?tool=EBIhttps://doaj.org/toc/1932-6203Predicting the impact of human activities and their derivable consequences, such as global warming or direct wildlife mortality, is increasingly relevant in our changing world. Due to their particular life history traits, long-lived migrants are amongst the most endangered and sensitive group of animals to these harming effects. Our ability to identify and quantify such anthropogenic threats in both breeding and wintering grounds is, therefore, of key importance in the field of conservation biology. Using long-term capture-recapture data (34 years, 4557 individuals) and year-round tracking data (4 years, 100 individuals) of a trans-equatorial migrant, the Cory's shearwater (Calonectris diomedea), we investigated the impact of longline fisheries and climatic variables in both breeding and wintering areas on the most important demographic trait of this seabird, i.e. adult survival. Annual adult survival probability was estimated at 0.914±0.022 on average, declining throughout 1978-1999 but recovering during the last decade (2005-2011). Our results suggest that both the incidental bycatch associated with longline fisheries and high sea surface temperatures (indirectly linked to food availability; SST) increased mortality rates during the long breeding season (March-October). Shearwater survival was also negatively affected during the short non-breeding season (December-February) by positive episodes of the Southern Oscillation Index (SOI). Indirect negative effects of climate at both breeding (SST) and wintering grounds (SOI) had a greater impact on survival than longliner activity, and indeed these climatic factors are those which are expected to present more unfavourable trends in the future. Our work underlines the importance of considering both breeding and wintering habitats as well as precise schedules/phenology when assessing the global role of the local impacts on the dynamics of migratory species.Raül RamosJosé Pedro GranadeiroMarie NevouxJean-Louis MouginMaria Peixe DiasPaulo CatryPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 7, p e40822 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Raül Ramos José Pedro Granadeiro Marie Nevoux Jean-Louis Mougin Maria Peixe Dias Paulo Catry Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.
description	Predicting the impact of human activities and their derivable consequences, such as global warming or direct wildlife mortality, is increasingly relevant in our changing world. Due to their particular life history traits, long-lived migrants are amongst the most endangered and sensitive group of animals to these harming effects. Our ability to identify and quantify such anthropogenic threats in both breeding and wintering grounds is, therefore, of key importance in the field of conservation biology. Using long-term capture-recapture data (34 years, 4557 individuals) and year-round tracking data (4 years, 100 individuals) of a trans-equatorial migrant, the Cory's shearwater (Calonectris diomedea), we investigated the impact of longline fisheries and climatic variables in both breeding and wintering areas on the most important demographic trait of this seabird, i.e. adult survival. Annual adult survival probability was estimated at 0.914±0.022 on average, declining throughout 1978-1999 but recovering during the last decade (2005-2011). Our results suggest that both the incidental bycatch associated with longline fisheries and high sea surface temperatures (indirectly linked to food availability; SST) increased mortality rates during the long breeding season (March-October). Shearwater survival was also negatively affected during the short non-breeding season (December-February) by positive episodes of the Southern Oscillation Index (SOI). Indirect negative effects of climate at both breeding (SST) and wintering grounds (SOI) had a greater impact on survival than longliner activity, and indeed these climatic factors are those which are expected to present more unfavourable trends in the future. Our work underlines the importance of considering both breeding and wintering habitats as well as precise schedules/phenology when assessing the global role of the local impacts on the dynamics of migratory species.
format	article
author	Raül Ramos José Pedro Granadeiro Marie Nevoux Jean-Louis Mougin Maria Peixe Dias Paulo Catry
author_facet	Raül Ramos José Pedro Granadeiro Marie Nevoux Jean-Louis Mougin Maria Peixe Dias Paulo Catry
author_sort	Raül Ramos
title	Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.
title_short	Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.
title_full	Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.
title_fullStr	Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.
title_full_unstemmed	Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.
title_sort	combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/162e6fa4deeb4230b025db8257ee22f1
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Combined spatio-temporal impacts of climate and longline fisheries on the survival of a trans-equatorial marine migrant.

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