Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis
Seabird colonies provide rare opportunities to study trophic segregation in an entire bird community. We here present data on nitrogen and carbon isotope ratios of eight species of seabirds from New Island, Falkland Islands, and compare trophic levels (TL) and foraging distributions. We included adu...
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ftuglasgow:oai:eprints.gla.ac.uk:7620 2023-05-15T18:02:01+02:00 Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis Weiss, F. Furness, R.W. McGill, R.A.R. Strange, I.J. Masello, J.F. Quillfeldt, P. 2009-12 https://eprints.gla.ac.uk/7620/ https://doi.org/10.1007/s00300-009-0674-6 unknown Weiss, F., Furness, R.W. <http://eprints.gla.ac.uk/view/author/11403.html>, McGill, R.A.R. <http://eprints.gla.ac.uk/view/author/10394.html>, Strange, I.J., Masello, J.F. and Quillfeldt, P. (2009) Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis. Polar Biology <https://eprints.gla.ac.uk/view/journal_volume/Polar_Biology.html>, 32(12), pp. 1753-1763. (doi:10.1007/s00300-009-0674-6 <https://doi.org/10.1007/s00300-009-0674-6>) QL Zoology GE Environmental Sciences Articles PeerReviewed 2009 ftuglasgow https://doi.org/10.1007/s00300-009-0674-6 2022-09-22T22:09:10Z Seabird colonies provide rare opportunities to study trophic segregation in an entire bird community. We here present data on nitrogen and carbon isotope ratios of eight species of seabirds from New Island, Falkland Islands, and compare trophic levels (TL) and foraging distributions. We included adult feathers representing the interbreeding season, as well as chick feathers or down representing the breeding season. The stable isotope ratios indicated differences in feeding areas and TLs between species, consistent with the data of previous conventional diet analyses and observations at sea. We further reviewed conventional and stable isotope seabird community studies calculating the means and ranges of TLs observed across these studies. The mean TL (3.7) of the seabird community on New Island was at the lower end of the mean value range (3.5–4.5), but not significantly different, from the reviewed seabird communities. Seabirds on New Island had a range of 1.3 TLs, which is on the upper end of ranges within a community (0.4–1.5), indicating strong trophic structuring Article in Journal/Newspaper Polar Biology University of Glasgow: Enlighten - Publications Polar Biology 32 12 1753 1763 |
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University of Glasgow: Enlighten - Publications |
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ftuglasgow |
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unknown |
topic |
QL Zoology GE Environmental Sciences |
spellingShingle |
QL Zoology GE Environmental Sciences Weiss, F. Furness, R.W. McGill, R.A.R. Strange, I.J. Masello, J.F. Quillfeldt, P. Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis |
topic_facet |
QL Zoology GE Environmental Sciences |
description |
Seabird colonies provide rare opportunities to study trophic segregation in an entire bird community. We here present data on nitrogen and carbon isotope ratios of eight species of seabirds from New Island, Falkland Islands, and compare trophic levels (TL) and foraging distributions. We included adult feathers representing the interbreeding season, as well as chick feathers or down representing the breeding season. The stable isotope ratios indicated differences in feeding areas and TLs between species, consistent with the data of previous conventional diet analyses and observations at sea. We further reviewed conventional and stable isotope seabird community studies calculating the means and ranges of TLs observed across these studies. The mean TL (3.7) of the seabird community on New Island was at the lower end of the mean value range (3.5–4.5), but not significantly different, from the reviewed seabird communities. Seabirds on New Island had a range of 1.3 TLs, which is on the upper end of ranges within a community (0.4–1.5), indicating strong trophic structuring |
format |
Article in Journal/Newspaper |
author |
Weiss, F. Furness, R.W. McGill, R.A.R. Strange, I.J. Masello, J.F. Quillfeldt, P. |
author_facet |
Weiss, F. Furness, R.W. McGill, R.A.R. Strange, I.J. Masello, J.F. Quillfeldt, P. |
author_sort |
Weiss, F. |
title |
Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis |
title_short |
Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis |
title_full |
Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis |
title_fullStr |
Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis |
title_full_unstemmed |
Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis |
title_sort |
trophic segregation of falkland islands seabirds: insights from stable isotope analysis |
publishDate |
2009 |
url |
https://eprints.gla.ac.uk/7620/ https://doi.org/10.1007/s00300-009-0674-6 |
genre |
Polar Biology |
genre_facet |
Polar Biology |
op_relation |
Weiss, F., Furness, R.W. <http://eprints.gla.ac.uk/view/author/11403.html>, McGill, R.A.R. <http://eprints.gla.ac.uk/view/author/10394.html>, Strange, I.J., Masello, J.F. and Quillfeldt, P. (2009) Trophic segregation of Falkland Islands seabirds: insights from stable isotope analysis. Polar Biology <https://eprints.gla.ac.uk/view/journal_volume/Polar_Biology.html>, 32(12), pp. 1753-1763. (doi:10.1007/s00300-009-0674-6 <https://doi.org/10.1007/s00300-009-0674-6>) |
op_doi |
https://doi.org/10.1007/s00300-009-0674-6 |
container_title |
Polar Biology |
container_volume |
32 |
container_issue |
12 |
container_start_page |
1753 |
op_container_end_page |
1763 |
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1766171678538203136 |