Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea
Background Natural environments are dynamic systems with conditions varying across years. Higher trophic level consumers may respond to changes in the distribution and quality of available prey by moving to locate new resources or by switching diets. In order to persist, sympatric species with simil...
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ftsouthampton:oai:eprints.soton.ac.uk:435627 2023-07-30T03:55:46+02:00 Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea St John Glew, Kate Wanless, Sarah Harris, Michael Daunt, Francis Erikstad, Kjell Einar Strom, Hallvard Speakman, John Kurten, Benjamin Trueman, Clive 2019-11-01 text https://eprints.soton.ac.uk/435627/ https://eprints.soton.ac.uk/435627/1/Sympatric_Atlantic_puffins.pdf en English eng https://eprints.soton.ac.uk/435627/1/Sympatric_Atlantic_puffins.pdf St John Glew, Kate, Wanless, Sarah, Harris, Michael, Daunt, Francis, Erikstad, Kjell Einar, Strom, Hallvard, Speakman, John, Kurten, Benjamin and Trueman, Clive (2019) Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea. Movement Ecology, 7, [33]. (doi:10.1186/s40462-019-0174-4. <http://dx.doi.org/10.1186/s40462-019-0174-4.>). cc_by_4 Article PeerReviewed 2019 ftsouthampton https://doi.org/10.1186/s40462-019-0174-4 2023-07-09T22:32:55Z Background Natural environments are dynamic systems with conditions varying across years. Higher trophic level consumers may respond to changes in the distribution and quality of available prey by moving to locate new resources or by switching diets. In order to persist, sympatric species with similar ecological niches may show contrasting foraging responses to changes in environmental conditions. However, in marine environments this assertion remains largely untested for highly mobile predators outside the breeding season because of the challenges of quantifying foraging location and trophic position under contrasting conditions. Method Differences in overwinter survival rates of two populations of North Sea seabirds (Atlantic puffins (Fratercula arctica) and razorbills (Alca torda)) indicated that environmental conditions differed between 2007/08 (low survival and thus poor conditions) and 2014/15 (higher survival, favourable conditions). We used a combination of bird-borne data loggers and stable isotope analyses to test 1) whether these sympatric species showed consistent responses with respect to foraging location and trophic position to these contrasting winter conditions during periods when body and cheek feathers were being grown (moult) and 2) whether any observed changes in moult locations and diet could be related to the abundance and distribution of potential prey species of differing energetic quality. Results Puffins and razorbills showed divergent foraging responses to contrasting winter conditions. Puffins foraging in the North Sea used broadly similar foraging locations during moult in both winters. However, puffin diet significantly differed, with a lower average trophic position in the winter characterised by lower survival rates. By contrast, razorbills’ trophic position increased in the poor survival winter and the population foraged in more distant southerly waters of the North Sea. Conclusions Populations of North Sea puffins and razorbills showed contrasting foraging responses when ... Article in Journal/Newspaper Alca torda fratercula Fratercula arctica University of Southampton: e-Prints Soton Movement Ecology 7 1 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Background Natural environments are dynamic systems with conditions varying across years. Higher trophic level consumers may respond to changes in the distribution and quality of available prey by moving to locate new resources or by switching diets. In order to persist, sympatric species with similar ecological niches may show contrasting foraging responses to changes in environmental conditions. However, in marine environments this assertion remains largely untested for highly mobile predators outside the breeding season because of the challenges of quantifying foraging location and trophic position under contrasting conditions. Method Differences in overwinter survival rates of two populations of North Sea seabirds (Atlantic puffins (Fratercula arctica) and razorbills (Alca torda)) indicated that environmental conditions differed between 2007/08 (low survival and thus poor conditions) and 2014/15 (higher survival, favourable conditions). We used a combination of bird-borne data loggers and stable isotope analyses to test 1) whether these sympatric species showed consistent responses with respect to foraging location and trophic position to these contrasting winter conditions during periods when body and cheek feathers were being grown (moult) and 2) whether any observed changes in moult locations and diet could be related to the abundance and distribution of potential prey species of differing energetic quality. Results Puffins and razorbills showed divergent foraging responses to contrasting winter conditions. Puffins foraging in the North Sea used broadly similar foraging locations during moult in both winters. However, puffin diet significantly differed, with a lower average trophic position in the winter characterised by lower survival rates. By contrast, razorbills’ trophic position increased in the poor survival winter and the population foraged in more distant southerly waters of the North Sea. Conclusions Populations of North Sea puffins and razorbills showed contrasting foraging responses when ... |
format |
Article in Journal/Newspaper |
author |
St John Glew, Kate Wanless, Sarah Harris, Michael Daunt, Francis Erikstad, Kjell Einar Strom, Hallvard Speakman, John Kurten, Benjamin Trueman, Clive |
spellingShingle |
St John Glew, Kate Wanless, Sarah Harris, Michael Daunt, Francis Erikstad, Kjell Einar Strom, Hallvard Speakman, John Kurten, Benjamin Trueman, Clive Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea |
author_facet |
St John Glew, Kate Wanless, Sarah Harris, Michael Daunt, Francis Erikstad, Kjell Einar Strom, Hallvard Speakman, John Kurten, Benjamin Trueman, Clive |
author_sort |
St John Glew, Kate |
title |
Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea |
title_short |
Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea |
title_full |
Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea |
title_fullStr |
Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea |
title_full_unstemmed |
Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea |
title_sort |
sympatric atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the north sea |
publishDate |
2019 |
url |
https://eprints.soton.ac.uk/435627/ https://eprints.soton.ac.uk/435627/1/Sympatric_Atlantic_puffins.pdf |
genre |
Alca torda fratercula Fratercula arctica |
genre_facet |
Alca torda fratercula Fratercula arctica |
op_relation |
https://eprints.soton.ac.uk/435627/1/Sympatric_Atlantic_puffins.pdf St John Glew, Kate, Wanless, Sarah, Harris, Michael, Daunt, Francis, Erikstad, Kjell Einar, Strom, Hallvard, Speakman, John, Kurten, Benjamin and Trueman, Clive (2019) Sympatric Atlantic puffins and razorbills show contrasting responses to adverse marine conditions during winter foraging within the North Sea. Movement Ecology, 7, [33]. (doi:10.1186/s40462-019-0174-4. <http://dx.doi.org/10.1186/s40462-019-0174-4.>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1186/s40462-019-0174-4 |
container_title |
Movement Ecology |
container_volume |
7 |
container_issue |
1 |
_version_ |
1772821445621055488 |