Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the North Sea
1.Seabirds that consume more than one prey type may adjust their foraging to maintain provisioning rates for their chicks. How energetically effective are these strategies, and what are the implications for the management of seabirds and their marine habitat? A multi-species functional response link...
Published in: | Journal of Applied Ecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2013
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/seabirds-maintain-offspring-provisioning-rate-despite-fluctuations-in-prey-abundance(d40fc3f4-8383-4576-ad19-dfd819451cf5).html https://doi.org/10.1111/1365-2664.12095 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/d40fc3f4-8383-4576-ad19-dfd819451cf5 2024-06-23T07:52:11+00:00 Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the North Sea Smout, Sophie Caroline Rindorf, Anna Wanless, Sarah Daunt, Francis Harris, Michael P. Matthiopoulos, Jason 2013-08 https://research-portal.st-andrews.ac.uk/en/researchoutput/seabirds-maintain-offspring-provisioning-rate-despite-fluctuations-in-prey-abundance(d40fc3f4-8383-4576-ad19-dfd819451cf5).html https://doi.org/10.1111/1365-2664.12095 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/seabirds-maintain-offspring-provisioning-rate-despite-fluctuations-in-prey-abundance(d40fc3f4-8383-4576-ad19-dfd819451cf5).html info:eu-repo/semantics/closedAccess Smout , S C , Rindorf , A , Wanless , S , Daunt , F , Harris , M P & Matthiopoulos , J 2013 , ' Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance : a multi-species functional response for guillemots in the North Sea ' , Journal of Applied Ecology , vol. 50 , no. 4 , pp. 1071-1079 . https://doi.org/10.1111/1365-2664.12095 Ammodytes marinus Chick provisioning Good Environmental Status Indicator species MCMC predator–prey interactions Seabird diet Sprattus sprattus Uria aalge article 2013 ftunstandrewcris https://doi.org/10.1111/1365-2664.12095 2024-06-13T00:36:41Z 1.Seabirds that consume more than one prey type may adjust their foraging to maintain provisioning rates for their chicks. How energetically effective are these strategies, and what are the implications for the management of seabirds and their marine habitat? A multi-species functional response links consumption rates to the availability of multiple prey types, but fitting multi-species functional responses to field data can be difficult, requiring consumption measurements over a range of different prey abundances. Such detailed data may be especially difficult to obtain in marine ecosystems. We used annual time-series data on chick provisioning for the common guillemot Uria aalge together with abundance indices for its two main prey (lesser sandeel Ammodytes marinus and sprat Sprattus sprattus) to parameterize a multi-species functional response for parents provisioning chicks at a major North Sea colony from 1992 to 2005. The fitted model reproduced changes in diet and consumption rate which were consistent with changes in local prey abundance including a long-term decline in sandeels. The model predicted that energy intake by chicks would be more sensitive to changes in sprat abundance than sandeel abundance. Guillemots appeared able to adjust their foraging tactics over a wide range of prey abundances to maintain a consistent energetic intake rate for chicks. Synthesis and applications. Our results suggest guillemot chicks obtain adequate calorific intake from their parents despite fluctuating prey abundances, conferring some resilience in the face of environmental variation. The parameterized multi-species functional response model can be used to estimate levels of severe prey shortage that compromise provisioning. It also enables us to interpret predator consumption rates so that these can be used as a metric of prey availability. Further, quantifying trophic links between marine prey and apex predators is needed to support the development of multi-species models in which the predators can be included. ... Article in Journal/Newspaper common guillemot Uria aalge uria University of St Andrews: Research Portal Journal of Applied Ecology 50 4 1071 1079 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Ammodytes marinus Chick provisioning Good Environmental Status Indicator species MCMC predator–prey interactions Seabird diet Sprattus sprattus Uria aalge |
spellingShingle |
Ammodytes marinus Chick provisioning Good Environmental Status Indicator species MCMC predator–prey interactions Seabird diet Sprattus sprattus Uria aalge Smout, Sophie Caroline Rindorf, Anna Wanless, Sarah Daunt, Francis Harris, Michael P. Matthiopoulos, Jason Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the North Sea |
topic_facet |
Ammodytes marinus Chick provisioning Good Environmental Status Indicator species MCMC predator–prey interactions Seabird diet Sprattus sprattus Uria aalge |
description |
1.Seabirds that consume more than one prey type may adjust their foraging to maintain provisioning rates for their chicks. How energetically effective are these strategies, and what are the implications for the management of seabirds and their marine habitat? A multi-species functional response links consumption rates to the availability of multiple prey types, but fitting multi-species functional responses to field data can be difficult, requiring consumption measurements over a range of different prey abundances. Such detailed data may be especially difficult to obtain in marine ecosystems. We used annual time-series data on chick provisioning for the common guillemot Uria aalge together with abundance indices for its two main prey (lesser sandeel Ammodytes marinus and sprat Sprattus sprattus) to parameterize a multi-species functional response for parents provisioning chicks at a major North Sea colony from 1992 to 2005. The fitted model reproduced changes in diet and consumption rate which were consistent with changes in local prey abundance including a long-term decline in sandeels. The model predicted that energy intake by chicks would be more sensitive to changes in sprat abundance than sandeel abundance. Guillemots appeared able to adjust their foraging tactics over a wide range of prey abundances to maintain a consistent energetic intake rate for chicks. Synthesis and applications. Our results suggest guillemot chicks obtain adequate calorific intake from their parents despite fluctuating prey abundances, conferring some resilience in the face of environmental variation. The parameterized multi-species functional response model can be used to estimate levels of severe prey shortage that compromise provisioning. It also enables us to interpret predator consumption rates so that these can be used as a metric of prey availability. Further, quantifying trophic links between marine prey and apex predators is needed to support the development of multi-species models in which the predators can be included. ... |
format |
Article in Journal/Newspaper |
author |
Smout, Sophie Caroline Rindorf, Anna Wanless, Sarah Daunt, Francis Harris, Michael P. Matthiopoulos, Jason |
author_facet |
Smout, Sophie Caroline Rindorf, Anna Wanless, Sarah Daunt, Francis Harris, Michael P. Matthiopoulos, Jason |
author_sort |
Smout, Sophie Caroline |
title |
Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the North Sea |
title_short |
Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the North Sea |
title_full |
Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the North Sea |
title_fullStr |
Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the North Sea |
title_full_unstemmed |
Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the North Sea |
title_sort |
seabirds maintain offspring provisioning rate despite fluctuations in prey abundance:a multi-species functional response for guillemots in the north sea |
publishDate |
2013 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/seabirds-maintain-offspring-provisioning-rate-despite-fluctuations-in-prey-abundance(d40fc3f4-8383-4576-ad19-dfd819451cf5).html https://doi.org/10.1111/1365-2664.12095 |
genre |
common guillemot Uria aalge uria |
genre_facet |
common guillemot Uria aalge uria |
op_source |
Smout , S C , Rindorf , A , Wanless , S , Daunt , F , Harris , M P & Matthiopoulos , J 2013 , ' Seabirds maintain offspring provisioning rate despite fluctuations in prey abundance : a multi-species functional response for guillemots in the North Sea ' , Journal of Applied Ecology , vol. 50 , no. 4 , pp. 1071-1079 . https://doi.org/10.1111/1365-2664.12095 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/seabirds-maintain-offspring-provisioning-rate-despite-fluctuations-in-prey-abundance(d40fc3f4-8383-4576-ad19-dfd819451cf5).html |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/1365-2664.12095 |
container_title |
Journal of Applied Ecology |
container_volume |
50 |
container_issue |
4 |
container_start_page |
1071 |
op_container_end_page |
1079 |
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1802643428984487936 |