Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 C gradient within their winter foraging areas in the southwest Atlantic Ocean
Rationale The main limitation of isotopic tracking for inferring distribution is the lack of detailed reference maps of the isotopic landscape (i.e. isoscapes) in the marine environment. Here, we attempt to map the marine δ 13 C isoscape for the southwestern sector of the Atlantic Ocean, and assess...
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crwiley:10.1002/rcm.7401 2024-06-02T08:04:27+00:00 Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 C gradient within their winter foraging areas in the southwest Atlantic Ocean Ceia, Filipe R. Ramos, Jaime A. Phillips, Richard A. Cherel, Yves Jones, Daniel C. Vieira, Rui P. Xavier, José C. 2015 http://dx.doi.org/10.1002/rcm.7401 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frcm.7401 https://onlinelibrary.wiley.com/doi/full/10.1002/rcm.7401 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Rapid Communications in Mass Spectrometry volume 29, issue 24, page 2328-2336 ISSN 0951-4198 1097-0231 journal-article 2015 crwiley https://doi.org/10.1002/rcm.7401 2024-05-03T11:41:11Z Rationale The main limitation of isotopic tracking for inferring distribution is the lack of detailed reference maps of the isotopic landscape (i.e. isoscapes) in the marine environment. Here, we attempt to map the marine δ 13 C isoscape for the southwestern sector of the Atlantic Ocean, and assess any temporal variation using the wandering albatross as a model species. Methods Tracking data and blood and diet samples were collected monthly from wandering albatrosses rearing chicks at Bird Island, South Georgia, during the austral winter between May and October 2009. The δ 13 C and δ 15 N values were measured by mass spectrometry in plasma and blood cells, and related to highly accurate data on individual movements and feeding activity obtained using three types of device: GPS, activity (immersion) loggers and stomach temperature probes. Results The tracked birds foraged in waters to the north or northwest of South Georgia, including the Patagonian shelf‐break, as far as 2000 km from the colony. The foraging region encompassed the two main fronts in the Southern Ocean (Polar and Subantarctic fronts). The δ 13 C values varied by only 2.1 ‰ in plasma and 2.5 ‰ in blood cells, and no relationships were found between the δ 13 C values in plasma and the mean latitude or longitude of landings or feeding events of each individual. Conclusions The failure to distinguish a major biogeographic gradient in δ 13 C values suggest that these values in the south Atlantic Ocean are fairly homogeneous. There was no substantial variation among months in either the δ 13 C or the δ 15 N values of plasma or blood cells of tracked birds. As birds did not show a significant change in diet composition or foraging areas during the study period, these results provide no evidence for major temporal variation in stable isotope ratios in consumer tissues, or in the regional marine isoscape in the austral winter of 2009. Copyright © 2015 John Wiley & Sons, Ltd. Article in Journal/Newspaper Bird Island South Atlantic Ocean Southern Ocean Wandering Albatross Wiley Online Library Austral Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Southern Ocean Rapid Communications in Mass Spectrometry 29 24 2328 2336 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Rationale The main limitation of isotopic tracking for inferring distribution is the lack of detailed reference maps of the isotopic landscape (i.e. isoscapes) in the marine environment. Here, we attempt to map the marine δ 13 C isoscape for the southwestern sector of the Atlantic Ocean, and assess any temporal variation using the wandering albatross as a model species. Methods Tracking data and blood and diet samples were collected monthly from wandering albatrosses rearing chicks at Bird Island, South Georgia, during the austral winter between May and October 2009. The δ 13 C and δ 15 N values were measured by mass spectrometry in plasma and blood cells, and related to highly accurate data on individual movements and feeding activity obtained using three types of device: GPS, activity (immersion) loggers and stomach temperature probes. Results The tracked birds foraged in waters to the north or northwest of South Georgia, including the Patagonian shelf‐break, as far as 2000 km from the colony. The foraging region encompassed the two main fronts in the Southern Ocean (Polar and Subantarctic fronts). The δ 13 C values varied by only 2.1 ‰ in plasma and 2.5 ‰ in blood cells, and no relationships were found between the δ 13 C values in plasma and the mean latitude or longitude of landings or feeding events of each individual. Conclusions The failure to distinguish a major biogeographic gradient in δ 13 C values suggest that these values in the south Atlantic Ocean are fairly homogeneous. There was no substantial variation among months in either the δ 13 C or the δ 15 N values of plasma or blood cells of tracked birds. As birds did not show a significant change in diet composition or foraging areas during the study period, these results provide no evidence for major temporal variation in stable isotope ratios in consumer tissues, or in the regional marine isoscape in the austral winter of 2009. Copyright © 2015 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Ceia, Filipe R. Ramos, Jaime A. Phillips, Richard A. Cherel, Yves Jones, Daniel C. Vieira, Rui P. Xavier, José C. |
spellingShingle |
Ceia, Filipe R. Ramos, Jaime A. Phillips, Richard A. Cherel, Yves Jones, Daniel C. Vieira, Rui P. Xavier, José C. Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 C gradient within their winter foraging areas in the southwest Atlantic Ocean |
author_facet |
Ceia, Filipe R. Ramos, Jaime A. Phillips, Richard A. Cherel, Yves Jones, Daniel C. Vieira, Rui P. Xavier, José C. |
author_sort |
Ceia, Filipe R. |
title |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 C gradient within their winter foraging areas in the southwest Atlantic Ocean |
title_short |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 C gradient within their winter foraging areas in the southwest Atlantic Ocean |
title_full |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 C gradient within their winter foraging areas in the southwest Atlantic Ocean |
title_fullStr |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 C gradient within their winter foraging areas in the southwest Atlantic Ocean |
title_full_unstemmed |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 C gradient within their winter foraging areas in the southwest Atlantic Ocean |
title_sort |
analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ 13 c gradient within their winter foraging areas in the southwest atlantic ocean |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/rcm.7401 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Frcm.7401 https://onlinelibrary.wiley.com/doi/full/10.1002/rcm.7401 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Austral Bird Island Southern Ocean |
geographic_facet |
Austral Bird Island Southern Ocean |
genre |
Bird Island South Atlantic Ocean Southern Ocean Wandering Albatross |
genre_facet |
Bird Island South Atlantic Ocean Southern Ocean Wandering Albatross |
op_source |
Rapid Communications in Mass Spectrometry volume 29, issue 24, page 2328-2336 ISSN 0951-4198 1097-0231 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rcm.7401 |
container_title |
Rapid Communications in Mass Spectrometry |
container_volume |
29 |
container_issue |
24 |
container_start_page |
2328 |
op_container_end_page |
2336 |
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