Changing winter diet of Thick-billed Murres ( Uria lomvia ) in southwest Greenland, 1990s versus 2010s
Southwest Greenland constitutes an internationally important wintering area for seabirds, including Thick-billed Murres (Uria lomvia (Linnaeus, 1758)), but their prey may be affected by the general warming of this sub-Arctic region. We compared murre diet collected in winter in the 1990s and in the...
Published in: | Canadian Journal of Zoology |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/cjz-2021-0120 https://cdnsciencepub.com/doi/full-xml/10.1139/cjz-2021-0120 https://cdnsciencepub.com/doi/pdf/10.1139/cjz-2021-0120 |
id |
crcansciencepubl:10.1139/cjz-2021-0120 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/cjz-2021-0120 2023-12-17T10:25:30+01:00 Changing winter diet of Thick-billed Murres ( Uria lomvia ) in southwest Greenland, 1990s versus 2010s Merkel, Flemming Ravn Linnebjerg, Jannie Fries Andersen, Ole Gorm Norden Huffeldt, Nicholas Per Jansen, Teunis Hedeholm, Rasmus Frederiksen, Morten 2021 http://dx.doi.org/10.1139/cjz-2021-0120 https://cdnsciencepub.com/doi/full-xml/10.1139/cjz-2021-0120 https://cdnsciencepub.com/doi/pdf/10.1139/cjz-2021-0120 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 99, issue 12, page 1080-1088 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2021 crcansciencepubl https://doi.org/10.1139/cjz-2021-0120 2023-11-19T13:39:30Z Southwest Greenland constitutes an internationally important wintering area for seabirds, including Thick-billed Murres (Uria lomvia (Linnaeus, 1758)), but their prey may be affected by the general warming of this sub-Arctic region. We compared murre diet collected in winter in the 1990s and in the 2010s around Nuuk, Greenland. Fish made up 36% of the diet (wet mass) and crustaceans 63% in the 1990s, changing to 22% and 78% in the 2010s, respectively. Capelin (Mallotus villosus (Müller, 1776)) was the dominant fish species, and the smaller contribution in the 2010s coincided with declining densities of capelin around Nuuk. The crustaceans were dominated by two krill species (Meganyctiphanes norvegica (M. Sars, 1857) and Thysanoessa inermis (Krøyer, 1846)). However, M. norvegica was only important in the 2010s (51% wet mass), while T. inermis was dominating the 1990s with 62% wet mass and only 23% in the 2010s. The dominance of M. norvegica in the 2010s confirmed our expectations of a gradual “borealization” of this region due to the generally warming sub-Arctic. The smaller contribution of fish in the diet may also support the hypothesis of deteriorating winter conditions for murres. Apart from the diet, plastic was found in 15% of the birds and 53% had parasitic nematodes. Article in Journal/Newspaper Arctic Greenland Meganyctiphanes norvegica Nuuk Uria lomvia Thysanoessa inermis uria Canadian Science Publishing (via Crossref) Arctic Greenland Nuuk ENVELOPE(-52.150,-52.150,68.717,68.717) Canadian Journal of Zoology |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Merkel, Flemming Ravn Linnebjerg, Jannie Fries Andersen, Ole Gorm Norden Huffeldt, Nicholas Per Jansen, Teunis Hedeholm, Rasmus Frederiksen, Morten Changing winter diet of Thick-billed Murres ( Uria lomvia ) in southwest Greenland, 1990s versus 2010s |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Southwest Greenland constitutes an internationally important wintering area for seabirds, including Thick-billed Murres (Uria lomvia (Linnaeus, 1758)), but their prey may be affected by the general warming of this sub-Arctic region. We compared murre diet collected in winter in the 1990s and in the 2010s around Nuuk, Greenland. Fish made up 36% of the diet (wet mass) and crustaceans 63% in the 1990s, changing to 22% and 78% in the 2010s, respectively. Capelin (Mallotus villosus (Müller, 1776)) was the dominant fish species, and the smaller contribution in the 2010s coincided with declining densities of capelin around Nuuk. The crustaceans were dominated by two krill species (Meganyctiphanes norvegica (M. Sars, 1857) and Thysanoessa inermis (Krøyer, 1846)). However, M. norvegica was only important in the 2010s (51% wet mass), while T. inermis was dominating the 1990s with 62% wet mass and only 23% in the 2010s. The dominance of M. norvegica in the 2010s confirmed our expectations of a gradual “borealization” of this region due to the generally warming sub-Arctic. The smaller contribution of fish in the diet may also support the hypothesis of deteriorating winter conditions for murres. Apart from the diet, plastic was found in 15% of the birds and 53% had parasitic nematodes. |
format |
Article in Journal/Newspaper |
author |
Merkel, Flemming Ravn Linnebjerg, Jannie Fries Andersen, Ole Gorm Norden Huffeldt, Nicholas Per Jansen, Teunis Hedeholm, Rasmus Frederiksen, Morten |
author_facet |
Merkel, Flemming Ravn Linnebjerg, Jannie Fries Andersen, Ole Gorm Norden Huffeldt, Nicholas Per Jansen, Teunis Hedeholm, Rasmus Frederiksen, Morten |
author_sort |
Merkel, Flemming Ravn |
title |
Changing winter diet of Thick-billed Murres ( Uria lomvia ) in southwest Greenland, 1990s versus 2010s |
title_short |
Changing winter diet of Thick-billed Murres ( Uria lomvia ) in southwest Greenland, 1990s versus 2010s |
title_full |
Changing winter diet of Thick-billed Murres ( Uria lomvia ) in southwest Greenland, 1990s versus 2010s |
title_fullStr |
Changing winter diet of Thick-billed Murres ( Uria lomvia ) in southwest Greenland, 1990s versus 2010s |
title_full_unstemmed |
Changing winter diet of Thick-billed Murres ( Uria lomvia ) in southwest Greenland, 1990s versus 2010s |
title_sort |
changing winter diet of thick-billed murres ( uria lomvia ) in southwest greenland, 1990s versus 2010s |
publisher |
Canadian Science Publishing |
publishDate |
2021 |
url |
http://dx.doi.org/10.1139/cjz-2021-0120 https://cdnsciencepub.com/doi/full-xml/10.1139/cjz-2021-0120 https://cdnsciencepub.com/doi/pdf/10.1139/cjz-2021-0120 |
long_lat |
ENVELOPE(-52.150,-52.150,68.717,68.717) |
geographic |
Arctic Greenland Nuuk |
geographic_facet |
Arctic Greenland Nuuk |
genre |
Arctic Greenland Meganyctiphanes norvegica Nuuk Uria lomvia Thysanoessa inermis uria |
genre_facet |
Arctic Greenland Meganyctiphanes norvegica Nuuk Uria lomvia Thysanoessa inermis uria |
op_source |
Canadian Journal of Zoology volume 99, issue 12, page 1080-1088 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2021-0120 |
container_title |
Canadian Journal of Zoology |
_version_ |
1785577127366623232 |