Using marine isoscapes to infer movements of oceanic migrants: the case of Bulwer's petrel (Bulweria bulwerii) in the Atlantic Ocean
Studying the movements of oceanic migrants has been elusive until the advent of several tracking devices, such as the light-level geolocators. Stable isotope analysis (SIA) offers a complementary approach to infer areas used year-round, but its suitability in oceanic environments remains almost unex...
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ftubarcepubl:oai:diposit.ub.edu:2445/127199 2024-02-11T10:08:37+01:00 Using marine isoscapes to infer movements of oceanic migrants: the case of Bulwer's petrel (Bulweria bulwerii) in the Atlantic Ocean Cruz Flores, Marta Militão, Teresa Ramos i Garcia, Raül González-Solís, Jacob 2018-06-12 13 p. application/pdf http://hdl.handle.net/2445/127199 eng eng Public Library of Science (PLoS) Reproducció del document publicat a: https://doi.org/10.1371/journal.pone.0198667 PLoS One, 2018, vol. 13, p. e0198667 Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) https://doi.org/10.1371/journal.pone.0198667 1932-6203 http://hdl.handle.net/2445/127199 684041 29894489 cc-by (c) Cruz Flores, M. et al., 2018 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess Migració d'animals Ocells marins Nutrició animal Atlàntic Oceà Isòtops Animal migration Sea birds Animal nutrition Atlantic Ocean Isotopes info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftubarcepubl https://doi.org/10.1371/journal.pone.0198667 2024-01-24T01:05:16Z Studying the movements of oceanic migrants has been elusive until the advent of several tracking devices, such as the light-level geolocators. Stable isotope analysis (SIA) offers a complementary approach to infer areas used year-round, but its suitability in oceanic environments remains almost unexplored. To evaluate SIA as a tool for inferring movements of oceanic migrants, we sampled an oceanic seabird, the Bulwer's petrel, Bulweria bulwerii, in four breeding colonies spread along its Atlantic distribution. We first studied the species moulting pattern from 29 corpses collected in the colonies. Secondly, based on this moult knowledge, we selected three feathers from tracked birds to infer their breeding and non-breeding grounds using SIA: the 1st primary (P1), the 8th secondary (S8) and the 6th rectrix (R6) feathers. Birds migrated to two main non-breeding areas, the Central or the South Atlantic Ocean. P1 showed similar isotopic values among petrels from different breeding colonies, suggesting this feather is replaced early in the non-breeding period in a common area used by most birds, the Central Atlantic. S8 and R6 feathers correctly assigned 92% and 81%, respectively, of the birds to their non-breeding areas, suggesting they were replaced late in season, when birds were settled in their main non-breeding grounds. Our results showed that the isotopic baseline levels of the Central and South Atlantic are propagated through the food web until reaching top predators, suggesting these ratios can be used to infer the movement of long-distance migrants among oceanic water masses. Article in Journal/Newspaper South Atlantic Ocean Dipòsit Digital de la Universitat de Barcelona PLOS ONE 13 6 e0198667 |
institution |
Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Migració d'animals Ocells marins Nutrició animal Atlàntic Oceà Isòtops Animal migration Sea birds Animal nutrition Atlantic Ocean Isotopes |
spellingShingle |
Migració d'animals Ocells marins Nutrició animal Atlàntic Oceà Isòtops Animal migration Sea birds Animal nutrition Atlantic Ocean Isotopes Cruz Flores, Marta Militão, Teresa Ramos i Garcia, Raül González-Solís, Jacob Using marine isoscapes to infer movements of oceanic migrants: the case of Bulwer's petrel (Bulweria bulwerii) in the Atlantic Ocean |
topic_facet |
Migració d'animals Ocells marins Nutrició animal Atlàntic Oceà Isòtops Animal migration Sea birds Animal nutrition Atlantic Ocean Isotopes |
description |
Studying the movements of oceanic migrants has been elusive until the advent of several tracking devices, such as the light-level geolocators. Stable isotope analysis (SIA) offers a complementary approach to infer areas used year-round, but its suitability in oceanic environments remains almost unexplored. To evaluate SIA as a tool for inferring movements of oceanic migrants, we sampled an oceanic seabird, the Bulwer's petrel, Bulweria bulwerii, in four breeding colonies spread along its Atlantic distribution. We first studied the species moulting pattern from 29 corpses collected in the colonies. Secondly, based on this moult knowledge, we selected three feathers from tracked birds to infer their breeding and non-breeding grounds using SIA: the 1st primary (P1), the 8th secondary (S8) and the 6th rectrix (R6) feathers. Birds migrated to two main non-breeding areas, the Central or the South Atlantic Ocean. P1 showed similar isotopic values among petrels from different breeding colonies, suggesting this feather is replaced early in the non-breeding period in a common area used by most birds, the Central Atlantic. S8 and R6 feathers correctly assigned 92% and 81%, respectively, of the birds to their non-breeding areas, suggesting they were replaced late in season, when birds were settled in their main non-breeding grounds. Our results showed that the isotopic baseline levels of the Central and South Atlantic are propagated through the food web until reaching top predators, suggesting these ratios can be used to infer the movement of long-distance migrants among oceanic water masses. |
format |
Article in Journal/Newspaper |
author |
Cruz Flores, Marta Militão, Teresa Ramos i Garcia, Raül González-Solís, Jacob |
author_facet |
Cruz Flores, Marta Militão, Teresa Ramos i Garcia, Raül González-Solís, Jacob |
author_sort |
Cruz Flores, Marta |
title |
Using marine isoscapes to infer movements of oceanic migrants: the case of Bulwer's petrel (Bulweria bulwerii) in the Atlantic Ocean |
title_short |
Using marine isoscapes to infer movements of oceanic migrants: the case of Bulwer's petrel (Bulweria bulwerii) in the Atlantic Ocean |
title_full |
Using marine isoscapes to infer movements of oceanic migrants: the case of Bulwer's petrel (Bulweria bulwerii) in the Atlantic Ocean |
title_fullStr |
Using marine isoscapes to infer movements of oceanic migrants: the case of Bulwer's petrel (Bulweria bulwerii) in the Atlantic Ocean |
title_full_unstemmed |
Using marine isoscapes to infer movements of oceanic migrants: the case of Bulwer's petrel (Bulweria bulwerii) in the Atlantic Ocean |
title_sort |
using marine isoscapes to infer movements of oceanic migrants: the case of bulwer's petrel (bulweria bulwerii) in the atlantic ocean |
publisher |
Public Library of Science (PLoS) |
publishDate |
2018 |
url |
http://hdl.handle.net/2445/127199 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_relation |
Reproducció del document publicat a: https://doi.org/10.1371/journal.pone.0198667 PLoS One, 2018, vol. 13, p. e0198667 Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) https://doi.org/10.1371/journal.pone.0198667 1932-6203 http://hdl.handle.net/2445/127199 684041 29894489 |
op_rights |
cc-by (c) Cruz Flores, M. et al., 2018 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0198667 |
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PLOS ONE |
container_volume |
13 |
container_issue |
6 |
container_start_page |
e0198667 |
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