Diet of eiders and body condition change from the late 1980s to the mid 2010s
Food and foraging decisions are fundamental drivers of the population dynamics of bird species. Eider Somateria mollissima was sampled in Danish marine waters during the non-breeding season in 1986–1990 and in 2010–2017 in order to analyze changes in diet and body condition between the two periods....
Published in: | Journal of Sea Research |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2022
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Online Access: | https://pure.au.dk/portal/da/publications/diet-of-eiders-and-body-condition-change-from-the-late-1980s-to-the-mid-2010s(06143c53-9c26-475c-bbcb-40d09fae5e20).html https://doi.org/10.1016/j.seares.2022.102244 https://pure.au.dk/ws/files/300548049/1_s2.0_S138511012200082X_main.pdf http://www.scopus.com/inward/record.url?scp=85133612887&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/06143c53-9c26-475c-bbcb-40d09fae5e20 2023-12-17T10:50:01+01:00 Diet of eiders and body condition change from the late 1980s to the mid 2010s Laursen, Karsten Møller, Anders Pape 2022-09 application/pdf https://pure.au.dk/portal/da/publications/diet-of-eiders-and-body-condition-change-from-the-late-1980s-to-the-mid-2010s(06143c53-9c26-475c-bbcb-40d09fae5e20).html https://doi.org/10.1016/j.seares.2022.102244 https://pure.au.dk/ws/files/300548049/1_s2.0_S138511012200082X_main.pdf http://www.scopus.com/inward/record.url?scp=85133612887&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/da/publications/diet-of-eiders-and-body-condition-change-from-the-late-1980s-to-the-mid-2010s(06143c53-9c26-475c-bbcb-40d09fae5e20).html info:eu-repo/semantics/openAccess Laursen , K & Møller , A P 2022 , ' Diet of eiders and body condition change from the late 1980s to the mid 2010s ' , Journal of Sea Research , vol. 187 , 102244 . https://doi.org/10.1016/j.seares.2022.102244 Blue mussels Eider Food item Mytilus edulis Nutrients Somateria mollissima Water temperature article 2022 ftuniaarhuspubl https://doi.org/10.1016/j.seares.2022.102244 2023-11-23T00:01:38Z Food and foraging decisions are fundamental drivers of the population dynamics of bird species. Eider Somateria mollissima was sampled in Danish marine waters during the non-breeding season in 1986–1990 and in 2010–2017 in order to analyze changes in diet and body condition between the two periods. The food items found were among those commonly consumed by eiders. Between the late 1980s and the mid 2010s there was a decrease in the number of blue mussels Mytilus edulis, cockles Cerastoderma edule and common whelks Buccinum undatum in the diet, and an increase in the number of razor clam Ensis directus. Blue mussel was the most abundant prey. When present, this prey item occurred almost exclusively in the eiders' digestive tract and was negatively correlated with the numbers of other prey items. Eiders with blue mussels, other bivalves and shore crabs in the gizzard had better body condition than eiders with other food items. Blue mussel was a preferred food item and is important for the build-up of body condition. Body condition increased between the late 1980s and the mid 2010s. We assume that this increase in body condition has occurred in parallel with a decrease in the size of the population of the Baltic/Wadden Sea flyway. Article in Journal/Newspaper Somateria mollissima Aarhus University: Research Journal of Sea Research 187 102244 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Blue mussels Eider Food item Mytilus edulis Nutrients Somateria mollissima Water temperature |
spellingShingle |
Blue mussels Eider Food item Mytilus edulis Nutrients Somateria mollissima Water temperature Laursen, Karsten Møller, Anders Pape Diet of eiders and body condition change from the late 1980s to the mid 2010s |
topic_facet |
Blue mussels Eider Food item Mytilus edulis Nutrients Somateria mollissima Water temperature |
description |
Food and foraging decisions are fundamental drivers of the population dynamics of bird species. Eider Somateria mollissima was sampled in Danish marine waters during the non-breeding season in 1986–1990 and in 2010–2017 in order to analyze changes in diet and body condition between the two periods. The food items found were among those commonly consumed by eiders. Between the late 1980s and the mid 2010s there was a decrease in the number of blue mussels Mytilus edulis, cockles Cerastoderma edule and common whelks Buccinum undatum in the diet, and an increase in the number of razor clam Ensis directus. Blue mussel was the most abundant prey. When present, this prey item occurred almost exclusively in the eiders' digestive tract and was negatively correlated with the numbers of other prey items. Eiders with blue mussels, other bivalves and shore crabs in the gizzard had better body condition than eiders with other food items. Blue mussel was a preferred food item and is important for the build-up of body condition. Body condition increased between the late 1980s and the mid 2010s. We assume that this increase in body condition has occurred in parallel with a decrease in the size of the population of the Baltic/Wadden Sea flyway. |
format |
Article in Journal/Newspaper |
author |
Laursen, Karsten Møller, Anders Pape |
author_facet |
Laursen, Karsten Møller, Anders Pape |
author_sort |
Laursen, Karsten |
title |
Diet of eiders and body condition change from the late 1980s to the mid 2010s |
title_short |
Diet of eiders and body condition change from the late 1980s to the mid 2010s |
title_full |
Diet of eiders and body condition change from the late 1980s to the mid 2010s |
title_fullStr |
Diet of eiders and body condition change from the late 1980s to the mid 2010s |
title_full_unstemmed |
Diet of eiders and body condition change from the late 1980s to the mid 2010s |
title_sort |
diet of eiders and body condition change from the late 1980s to the mid 2010s |
publishDate |
2022 |
url |
https://pure.au.dk/portal/da/publications/diet-of-eiders-and-body-condition-change-from-the-late-1980s-to-the-mid-2010s(06143c53-9c26-475c-bbcb-40d09fae5e20).html https://doi.org/10.1016/j.seares.2022.102244 https://pure.au.dk/ws/files/300548049/1_s2.0_S138511012200082X_main.pdf http://www.scopus.com/inward/record.url?scp=85133612887&partnerID=8YFLogxK |
genre |
Somateria mollissima |
genre_facet |
Somateria mollissima |
op_source |
Laursen , K & Møller , A P 2022 , ' Diet of eiders and body condition change from the late 1980s to the mid 2010s ' , Journal of Sea Research , vol. 187 , 102244 . https://doi.org/10.1016/j.seares.2022.102244 |
op_relation |
https://pure.au.dk/portal/da/publications/diet-of-eiders-and-body-condition-change-from-the-late-1980s-to-the-mid-2010s(06143c53-9c26-475c-bbcb-40d09fae5e20).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.seares.2022.102244 |
container_title |
Journal of Sea Research |
container_volume |
187 |
container_start_page |
102244 |
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1785574670274134016 |