Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ13 C gradient within their winter foraging areas in the southwest Atlantic Ocean: spatiotemporal isotopic variation in southwestern Atlantic waters
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 δ13C isoscape for the southwestern sector of the Atlantic Ocean, and assess a...
Published in: | Rapid Communications in Mass Spectrometry |
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Online Access: | http://hdl.handle.net/10773/16814 https://doi.org/10.1002/rcm.7401 |
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ftria:oai:ria.ua.pt:10773/16814 2023-05-15T15:44:45+02:00 Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ13 C gradient within their winter foraging areas in the southwest Atlantic Ocean: spatiotemporal isotopic variation in southwestern Atlantic waters Ceia, Filipe R. Ramos, Jaime A. Phillips, Richard A. Cherel, Yves Jones, Daniel C. Vieira, Rui P. Xavier, José C. 2015 http://hdl.handle.net/10773/16814 https://doi.org/10.1002/rcm.7401 eng eng Wiley info:eu-repo/grantAgreement/FCT/3599-PPCDT/64539/PT info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F95372%2F2013/PT info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F84030%2F2012/PT info:eu-repo/grantAgreement/FCT/COMPETE/132951/PT 09514198 http://hdl.handle.net/10773/16814 doi:10.1002/rcm.7401 restrictedAccess article 2015 ftria https://doi.org/10.1002/rcm.7401 2022-05-25T18:35:17Z 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 δ13C 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 δ13C and δ15N 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 δ13C values varied by only 2.1 ‰ in plasma and 2.5 ‰ in blood cells, and no relationships were found between the δ13C 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 δ13C values suggest that these values in the south Atlantic Ocean are fairly homogeneous. There was no substantial variation among months in either the δ13C or the δ15N 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 Repositório Institucional da Universidade de Aveiro (RIA) Austral Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Southern Ocean Rapid Communications in Mass Spectrometry 29 24 2328 2336 |
institution |
Open Polar |
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Repositório Institucional da Universidade de Aveiro (RIA) |
op_collection_id |
ftria |
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 δ13C 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 δ13C and δ15N 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 δ13C values varied by only 2.1 ‰ in plasma and 2.5 ‰ in blood cells, and no relationships were found between the δ13C 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 δ13C values suggest that these values in the south Atlantic Ocean are fairly homogeneous. There was no substantial variation among months in either the δ13C or the δ15N 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 δ13 C gradient within their winter foraging areas in the southwest Atlantic Ocean: spatiotemporal isotopic variation in southwestern Atlantic waters |
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 δ13 C gradient within their winter foraging areas in the southwest Atlantic Ocean: spatiotemporal isotopic variation in southwestern Atlantic waters |
title_short |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ13 C gradient within their winter foraging areas in the southwest Atlantic Ocean: spatiotemporal isotopic variation in southwestern Atlantic waters |
title_full |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ13 C gradient within their winter foraging areas in the southwest Atlantic Ocean: spatiotemporal isotopic variation in southwestern Atlantic waters |
title_fullStr |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ13 C gradient within their winter foraging areas in the southwest Atlantic Ocean: spatiotemporal isotopic variation in southwestern Atlantic waters |
title_full_unstemmed |
Analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ13 C gradient within their winter foraging areas in the southwest Atlantic Ocean: spatiotemporal isotopic variation in southwestern Atlantic waters |
title_sort |
analysis of stable isotope ratios in blood of tracked wandering albatrosses fails to distinguish a δ13 c gradient within their winter foraging areas in the southwest atlantic ocean: spatiotemporal isotopic variation in southwestern atlantic waters |
publisher |
Wiley |
publishDate |
2015 |
url |
http://hdl.handle.net/10773/16814 https://doi.org/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_relation |
info:eu-repo/grantAgreement/FCT/3599-PPCDT/64539/PT info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F95372%2F2013/PT info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F84030%2F2012/PT info:eu-repo/grantAgreement/FCT/COMPETE/132951/PT 09514198 http://hdl.handle.net/10773/16814 doi:10.1002/rcm.7401 |
op_rights |
restrictedAccess |
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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1766379116631687168 |