Expanded methods, supplementary Table and Figures from What difference does a century make? Shifts in the ecosystem structure of the Ross Sea, Antarctica, as evidenced from a sentinel species, the Weddell seal
The arrival of humans to Antarctica's Ross Sea (100+ years ago) led to a slow, but sustained increase in human activities in the area. To investigate if human presence has influenced the structure of the ecosystem over the last century, we compared historical ( ca 100 years old) and modern samp...
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ftdatacite:10.6084/m9.figshare.5285779 2023-05-15T13:55:09+02:00 Expanded methods, supplementary Table and Figures from What difference does a century make? Shifts in the ecosystem structure of the Ross Sea, Antarctica, as evidenced from a sentinel species, the Weddell seal Hückstädt, Luis A. McCarthy, Matthew Koch, Paul Costa, Daniel P. 2017 https://dx.doi.org/10.6084/m9.figshare.5285779 https://rs.figshare.com/articles/journal_contribution/Expanded_methods_supplementary_Table_and_Figures_from_What_difference_does_a_century_make_Shifts_in_the_ecosystem_structure_of_the_Ross_Sea_Antarctica_as_evidenced_from_a_sentinel_species_the_Weddell_seal/5285779 unknown The Royal Society https://dx.doi.org/10.1098/rspb.2017.0927 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Ecology FOS Biological sciences Text article-journal Journal contribution ScholarlyArticle 2017 ftdatacite https://doi.org/10.6084/m9.figshare.5285779 https://doi.org/10.1098/rspb.2017.0927 2021-11-05T12:55:41Z The arrival of humans to Antarctica's Ross Sea (100+ years ago) led to a slow, but sustained increase in human activities in the area. To investigate if human presence has influenced the structure of the ecosystem over the last century, we compared historical ( ca 100 years old) and modern samples of a sentinel species, the Weddell seal ( Leptonychotes weddellii ), using both bulk tissue and compound-specific stable isotope analysis. The historical isotopic niche of Weddell seals was over five times larger than the modern niche. The isotopic values of individual amino acids showed a clear segregation between historical and modern samples, indicative of differences at the base of the trophic web. Further, we found no significant differences in the trophic position of Weddell seals between the two periods. Our study revealed that the Ross Sea has undergone detectable changes (i.e. in the primary producers community) in the last century, but the presence of humans has not disrupted trophic interactions supporting Weddell seals. Text Antarc* Antarctica Ross Sea Weddell Seal Weddell Seals DataCite Metadata Store (German National Library of Science and Technology) Ross Sea Weddell |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Ecology FOS Biological sciences |
spellingShingle |
Ecology FOS Biological sciences Hückstädt, Luis A. McCarthy, Matthew Koch, Paul Costa, Daniel P. Expanded methods, supplementary Table and Figures from What difference does a century make? Shifts in the ecosystem structure of the Ross Sea, Antarctica, as evidenced from a sentinel species, the Weddell seal |
topic_facet |
Ecology FOS Biological sciences |
description |
The arrival of humans to Antarctica's Ross Sea (100+ years ago) led to a slow, but sustained increase in human activities in the area. To investigate if human presence has influenced the structure of the ecosystem over the last century, we compared historical ( ca 100 years old) and modern samples of a sentinel species, the Weddell seal ( Leptonychotes weddellii ), using both bulk tissue and compound-specific stable isotope analysis. The historical isotopic niche of Weddell seals was over five times larger than the modern niche. The isotopic values of individual amino acids showed a clear segregation between historical and modern samples, indicative of differences at the base of the trophic web. Further, we found no significant differences in the trophic position of Weddell seals between the two periods. Our study revealed that the Ross Sea has undergone detectable changes (i.e. in the primary producers community) in the last century, but the presence of humans has not disrupted trophic interactions supporting Weddell seals. |
format |
Text |
author |
Hückstädt, Luis A. McCarthy, Matthew Koch, Paul Costa, Daniel P. |
author_facet |
Hückstädt, Luis A. McCarthy, Matthew Koch, Paul Costa, Daniel P. |
author_sort |
Hückstädt, Luis A. |
title |
Expanded methods, supplementary Table and Figures from What difference does a century make? Shifts in the ecosystem structure of the Ross Sea, Antarctica, as evidenced from a sentinel species, the Weddell seal |
title_short |
Expanded methods, supplementary Table and Figures from What difference does a century make? Shifts in the ecosystem structure of the Ross Sea, Antarctica, as evidenced from a sentinel species, the Weddell seal |
title_full |
Expanded methods, supplementary Table and Figures from What difference does a century make? Shifts in the ecosystem structure of the Ross Sea, Antarctica, as evidenced from a sentinel species, the Weddell seal |
title_fullStr |
Expanded methods, supplementary Table and Figures from What difference does a century make? Shifts in the ecosystem structure of the Ross Sea, Antarctica, as evidenced from a sentinel species, the Weddell seal |
title_full_unstemmed |
Expanded methods, supplementary Table and Figures from What difference does a century make? Shifts in the ecosystem structure of the Ross Sea, Antarctica, as evidenced from a sentinel species, the Weddell seal |
title_sort |
expanded methods, supplementary table and figures from what difference does a century make? shifts in the ecosystem structure of the ross sea, antarctica, as evidenced from a sentinel species, the weddell seal |
publisher |
The Royal Society |
publishDate |
2017 |
url |
https://dx.doi.org/10.6084/m9.figshare.5285779 https://rs.figshare.com/articles/journal_contribution/Expanded_methods_supplementary_Table_and_Figures_from_What_difference_does_a_century_make_Shifts_in_the_ecosystem_structure_of_the_Ross_Sea_Antarctica_as_evidenced_from_a_sentinel_species_the_Weddell_seal/5285779 |
geographic |
Ross Sea Weddell |
geographic_facet |
Ross Sea Weddell |
genre |
Antarc* Antarctica Ross Sea Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctica Ross Sea Weddell Seal Weddell Seals |
op_relation |
https://dx.doi.org/10.1098/rspb.2017.0927 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.5285779 https://doi.org/10.1098/rspb.2017.0927 |
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1766261423791407104 |