Supplementary material from "Antarctic petrels ‘on the ice rocks’: wintering strategy of an Antarctic seabird"
There is a paucity of information on the foraging ecology, especially individual use of sea-ice features and icebergs, over the non-breeding season in many seabird species. Using geolocators and stable isotopes, we defined the movements, distribution and diet of adult Antarctic petrels Thalassoica a...
Main Authors: | , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
The Royal Society
2020
|
Subjects: | |
Online Access: | https://dx.doi.org/10.6084/m9.figshare.c.4902420.v1 https://rs.figshare.com/collections/Supplementary_material_from_Antarctic_petrels_on_the_ice_rocks_wintering_strategy_of_an_Antarctic_seabird_/4902420/1 |
id |
ftdatacite:10.6084/m9.figshare.c.4902420.v1 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.6084/m9.figshare.c.4902420.v1 2023-05-15T13:48:33+02:00 Supplementary material from "Antarctic petrels ‘on the ice rocks’: wintering strategy of an Antarctic seabird" K. Delord A. Kato A. Tarroux F. Orgeret C. Cotté Y. Ropert-Coudert Y. Cherel S. Descamps 2020 https://dx.doi.org/10.6084/m9.figshare.c.4902420.v1 https://rs.figshare.com/collections/Supplementary_material_from_Antarctic_petrels_on_the_ice_rocks_wintering_strategy_of_an_Antarctic_seabird_/4902420/1 unknown The Royal Society https://dx.doi.org/10.1098/rsos.191429 https://dx.doi.org/10.6084/m9.figshare.c.4902420 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Ecology FOS Biological sciences 60801 Animal Behaviour Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.4902420.v1 https://doi.org/10.1098/rsos.191429 https://doi.org/10.6084/m9.figshare.c.4902420 2021-11-05T12:55:41Z There is a paucity of information on the foraging ecology, especially individual use of sea-ice features and icebergs, over the non-breeding season in many seabird species. Using geolocators and stable isotopes, we defined the movements, distribution and diet of adult Antarctic petrels Thalassoica antarctica from the largest known breeding colony, the inland Svarthamaren, Antarctica. More specifically, we examined how sea-ice concentration and free-drifting icebergs affect the distribution of Antarctic petrels. After breeding, birds moved north to the marginal ice zone (MIZ) in the Weddell sector of the Southern Ocean, following its northward extension during freeze-up in April, and they wintered there in April–August. There, the birds stayed predominantly out of the water (60–80% of the time) suggesting they use icebergs as platforms to stand on and/or to rest. Feather δ 15 N values encompassed one full trophic level, indicating that birds fed on various proportions of crustaceans and fish/squid, most likely Antarctic krill Euphausia superba and the myctophid fish Electrona antarctica and/or the squid Psychroteuthis glacialis . Birds showed strong affinity for the open waters of the northern boundary of the MIZ, an important iceberg transit area, which offers roosting opportunities and rich prey fields. The strong association of Antarctic petrels with sea-ice cycle and icebergs suggest the species can serve, year-round, as a sentinel of environmental changes for this remote region. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Iceberg* Sea ice Southern Ocean Thalassoica antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean Weddell Svarthamaren ENVELOPE(3.423,3.423,-54.438,-54.438) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Ecology FOS Biological sciences 60801 Animal Behaviour |
spellingShingle |
Ecology FOS Biological sciences 60801 Animal Behaviour K. Delord A. Kato A. Tarroux F. Orgeret C. Cotté Y. Ropert-Coudert Y. Cherel S. Descamps Supplementary material from "Antarctic petrels ‘on the ice rocks’: wintering strategy of an Antarctic seabird" |
topic_facet |
Ecology FOS Biological sciences 60801 Animal Behaviour |
description |
There is a paucity of information on the foraging ecology, especially individual use of sea-ice features and icebergs, over the non-breeding season in many seabird species. Using geolocators and stable isotopes, we defined the movements, distribution and diet of adult Antarctic petrels Thalassoica antarctica from the largest known breeding colony, the inland Svarthamaren, Antarctica. More specifically, we examined how sea-ice concentration and free-drifting icebergs affect the distribution of Antarctic petrels. After breeding, birds moved north to the marginal ice zone (MIZ) in the Weddell sector of the Southern Ocean, following its northward extension during freeze-up in April, and they wintered there in April–August. There, the birds stayed predominantly out of the water (60–80% of the time) suggesting they use icebergs as platforms to stand on and/or to rest. Feather δ 15 N values encompassed one full trophic level, indicating that birds fed on various proportions of crustaceans and fish/squid, most likely Antarctic krill Euphausia superba and the myctophid fish Electrona antarctica and/or the squid Psychroteuthis glacialis . Birds showed strong affinity for the open waters of the northern boundary of the MIZ, an important iceberg transit area, which offers roosting opportunities and rich prey fields. The strong association of Antarctic petrels with sea-ice cycle and icebergs suggest the species can serve, year-round, as a sentinel of environmental changes for this remote region. |
format |
Article in Journal/Newspaper |
author |
K. Delord A. Kato A. Tarroux F. Orgeret C. Cotté Y. Ropert-Coudert Y. Cherel S. Descamps |
author_facet |
K. Delord A. Kato A. Tarroux F. Orgeret C. Cotté Y. Ropert-Coudert Y. Cherel S. Descamps |
author_sort |
K. Delord |
title |
Supplementary material from "Antarctic petrels ‘on the ice rocks’: wintering strategy of an Antarctic seabird" |
title_short |
Supplementary material from "Antarctic petrels ‘on the ice rocks’: wintering strategy of an Antarctic seabird" |
title_full |
Supplementary material from "Antarctic petrels ‘on the ice rocks’: wintering strategy of an Antarctic seabird" |
title_fullStr |
Supplementary material from "Antarctic petrels ‘on the ice rocks’: wintering strategy of an Antarctic seabird" |
title_full_unstemmed |
Supplementary material from "Antarctic petrels ‘on the ice rocks’: wintering strategy of an Antarctic seabird" |
title_sort |
supplementary material from "antarctic petrels ‘on the ice rocks’: wintering strategy of an antarctic seabird" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4902420.v1 https://rs.figshare.com/collections/Supplementary_material_from_Antarctic_petrels_on_the_ice_rocks_wintering_strategy_of_an_Antarctic_seabird_/4902420/1 |
long_lat |
ENVELOPE(3.423,3.423,-54.438,-54.438) |
geographic |
Antarctic Southern Ocean Weddell Svarthamaren |
geographic_facet |
Antarctic Southern Ocean Weddell Svarthamaren |
genre |
Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Iceberg* Sea ice Southern Ocean Thalassoica antarctica |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctica Euphausia superba Iceberg* Sea ice Southern Ocean Thalassoica antarctica |
op_relation |
https://dx.doi.org/10.1098/rsos.191429 https://dx.doi.org/10.6084/m9.figshare.c.4902420 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4902420.v1 https://doi.org/10.1098/rsos.191429 https://doi.org/10.6084/m9.figshare.c.4902420 |
_version_ |
1766249440768688128 |