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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ftdoajarticles:oai:doaj.org/article:9c87f5c89f1146ae8837f4f50432d2b8 2023-05-15T18:21:12+02:00 Using marine isoscapes to infer movements of oceanic migrants: The case of Bulwer's petrel, Bulweria bulwerii, in the Atlantic Ocean. Marta Cruz-Flores Teresa Militão Raül Ramos Jacob González-Solís 2018-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0198667 https://doaj.org/article/9c87f5c89f1146ae8837f4f50432d2b8 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5997309?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0198667 https://doaj.org/article/9c87f5c89f1146ae8837f4f50432d2b8 PLoS ONE, Vol 13, Iss 6, p e0198667 (2018) Medicine R Science Q article 2018 ftdoajarticles https://doi.org/10.1371/journal.pone.0198667 2022-12-31T15:03:55Z 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 Directory of Open Access Journals: DOAJ Articles PLOS ONE 13 6 e0198667 |
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English |
topic |
Medicine R Science Q |
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Medicine R Science Q Marta Cruz-Flores Teresa Militão Raül Ramos Jacob González-Solís Using marine isoscapes to infer movements of oceanic migrants: The case of Bulwer's petrel, Bulweria bulwerii, in the Atlantic Ocean. |
topic_facet |
Medicine R Science Q |
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 |
Marta Cruz-Flores Teresa Militão Raül Ramos Jacob González-Solís |
author_facet |
Marta Cruz-Flores Teresa Militão Raül Ramos Jacob González-Solís |
author_sort |
Marta Cruz-Flores |
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 |
https://doi.org/10.1371/journal.pone.0198667 https://doaj.org/article/9c87f5c89f1146ae8837f4f50432d2b8 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
PLoS ONE, Vol 13, Iss 6, p e0198667 (2018) |
op_relation |
http://europepmc.org/articles/PMC5997309?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0198667 https://doaj.org/article/9c87f5c89f1146ae8837f4f50432d2b8 |
op_doi |
https://doi.org/10.1371/journal.pone.0198667 |
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PLOS ONE |
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13 |
container_issue |
6 |
container_start_page |
e0198667 |
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