Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation
Many pelagic seabirds moult their feathers while at sea, which is an energetically costly behaviour. Mortality rates during moult can be high, so spatial and trophic ecology during this critical period is important for understanding demographic patterns. Unfortunately, individual foraging behaviours...
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Online Access: | http://hdl.handle.net/11250/2557982 https://doi.org/10.3354/meps12624 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2557982 2023-05-15T13:12:19+02:00 Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation Glew, Katie St. John Wanless, Sarah Harris, Michael P. Daunt, Francis Erikstad, Kjell E Strøm, Hallvard Trueman, Clive N. 2018 http://hdl.handle.net/11250/2557982 https://doi.org/10.3354/meps12624 eng eng Inter Research Andre: SPITFIRENERC DTP partnership 1498919 Andre: SEATRACK (www.seapop.no/en/ seatrack/) Andre: SMMI Andre: Natural Environment Research Council (NERC) Marine Ecology Progress Series. 2018, 599 239-251. urn:issn:0171-8630 http://hdl.handle.net/11250/2557982 https://doi.org/10.3354/meps12624 cristin:1601845 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 239-251 599 Marine Ecology Progress Series Journal article Peer reviewed 2018 ftntnutrondheimi https://doi.org/10.3354/meps12624 2019-09-17T06:54:04Z Many pelagic seabirds moult their feathers while at sea, which is an energetically costly behaviour. Mortality rates during moult can be high, so spatial and trophic ecology during this critical period is important for understanding demographic patterns. Unfortunately, individual foraging behaviours specifically linked to at-sea moulting are commonly unclear. This paper combines 2 different approaches to geolocation: data from bird-borne geolocation loggers and stableisotope assignment using carbon and nitrogen isotope maps (isoscapes). Coupling 2 geolocation processes allows some uncertainties associated with isotope-based assignment to be constrained. We applied this approach to quantify species-specific foraging locations and individual trophic variability during feather regrowth in 3 sympatric auk populations breeding on the Isle of May, Scotland (common guillemot Uria aalge, razorbill Alca torda and Atlantic puffin Fratercula arctica). Inferred foraging areas during moult differed between species and feather types. Guillemots likely underwent moult within the southern North Sea, razorbills along the east coast of England and into the southern North Sea and puffins off the east coast of Scotland. Estimates of individual trophic position varied considerably within feather types (up to 1 trophic level difference between individuals), among feather types grown during different time periods and across the 3 species, with guillemots consistently foraging at higher trophic positions than razorbills and puffins. Used in combination, these methods better constrain foraging areas during moulting, and provide a technique to explore individual differences and flexibility in foraging strategy, which is valuable information for both seabird conservation and marine spatial planning. Isoscape · Trophic ecology · Foraging · Moult · Atlantic puffin · Common guillemot · Razorbill publishedVersion © The authors 2018. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted. Authors and original publication must be credited. Article in Journal/Newspaper Alca torda Atlantic puffin common guillemot fratercula Fratercula arctica Razorbill Uria aalge uria NTNU Open Archive (Norwegian University of Science and Technology) Marine Ecology Progress Series 599 239 251 |
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Open Polar |
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NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
Many pelagic seabirds moult their feathers while at sea, which is an energetically costly behaviour. Mortality rates during moult can be high, so spatial and trophic ecology during this critical period is important for understanding demographic patterns. Unfortunately, individual foraging behaviours specifically linked to at-sea moulting are commonly unclear. This paper combines 2 different approaches to geolocation: data from bird-borne geolocation loggers and stableisotope assignment using carbon and nitrogen isotope maps (isoscapes). Coupling 2 geolocation processes allows some uncertainties associated with isotope-based assignment to be constrained. We applied this approach to quantify species-specific foraging locations and individual trophic variability during feather regrowth in 3 sympatric auk populations breeding on the Isle of May, Scotland (common guillemot Uria aalge, razorbill Alca torda and Atlantic puffin Fratercula arctica). Inferred foraging areas during moult differed between species and feather types. Guillemots likely underwent moult within the southern North Sea, razorbills along the east coast of England and into the southern North Sea and puffins off the east coast of Scotland. Estimates of individual trophic position varied considerably within feather types (up to 1 trophic level difference between individuals), among feather types grown during different time periods and across the 3 species, with guillemots consistently foraging at higher trophic positions than razorbills and puffins. Used in combination, these methods better constrain foraging areas during moulting, and provide a technique to explore individual differences and flexibility in foraging strategy, which is valuable information for both seabird conservation and marine spatial planning. Isoscape · Trophic ecology · Foraging · Moult · Atlantic puffin · Common guillemot · Razorbill publishedVersion © The authors 2018. Open Access under Creative Commons by Attribution Licence. Use, distribution and reproduction are un - restricted. Authors and original publication must be credited. |
format |
Article in Journal/Newspaper |
author |
Glew, Katie St. John Wanless, Sarah Harris, Michael P. Daunt, Francis Erikstad, Kjell E Strøm, Hallvard Trueman, Clive N. |
spellingShingle |
Glew, Katie St. John Wanless, Sarah Harris, Michael P. Daunt, Francis Erikstad, Kjell E Strøm, Hallvard Trueman, Clive N. Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation |
author_facet |
Glew, Katie St. John Wanless, Sarah Harris, Michael P. Daunt, Francis Erikstad, Kjell E Strøm, Hallvard Trueman, Clive N. |
author_sort |
Glew, Katie St. John |
title |
Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation |
title_short |
Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation |
title_full |
Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation |
title_fullStr |
Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation |
title_full_unstemmed |
Moult location and diet of auks in the North Sea inferred from coupled light-based and isotope-based geolocation |
title_sort |
moult location and diet of auks in the north sea inferred from coupled light-based and isotope-based geolocation |
publisher |
Inter Research |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2557982 https://doi.org/10.3354/meps12624 |
genre |
Alca torda Atlantic puffin common guillemot fratercula Fratercula arctica Razorbill Uria aalge uria |
genre_facet |
Alca torda Atlantic puffin common guillemot fratercula Fratercula arctica Razorbill Uria aalge uria |
op_source |
239-251 599 Marine Ecology Progress Series |
op_relation |
Andre: SPITFIRENERC DTP partnership 1498919 Andre: SEATRACK (www.seapop.no/en/ seatrack/) Andre: SMMI Andre: Natural Environment Research Council (NERC) Marine Ecology Progress Series. 2018, 599 239-251. urn:issn:0171-8630 http://hdl.handle.net/11250/2557982 https://doi.org/10.3354/meps12624 cristin:1601845 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/meps12624 |
container_title |
Marine Ecology Progress Series |
container_volume |
599 |
container_start_page |
239 |
op_container_end_page |
251 |
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1766251339340316672 |