Environmental drivers of roosting body mass variation in boreal Great Tits Parus major
Small wintering passerines adaptively modulate daily body mass acquisition as part of their energy management policy. However, whether birds optimize overnight mass loss or body mass at dawn remains poorly understood. We studied environmental correlates of individual variation in body mass at dusk,...
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Wiley-Blackwell
2017
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Online Access: | https://lup.lub.lu.se/record/73e0b342-344a-46fd-8aac-8f38e62e4f7c https://doi.org/10.1111/ibi.12483 |
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ftulundlup:oai:lup.lub.lu.se:73e0b342-344a-46fd-8aac-8f38e62e4f7c 2024-02-11T10:03:45+01:00 Environmental drivers of roosting body mass variation in boreal Great Tits Parus major Broggi, Juli Koivula, Kari Hohtola, Esa Orell, Markku 2017-10-01 https://lup.lub.lu.se/record/73e0b342-344a-46fd-8aac-8f38e62e4f7c https://doi.org/10.1111/ibi.12483 eng eng Wiley-Blackwell https://lup.lub.lu.se/record/73e0b342-344a-46fd-8aac-8f38e62e4f7c http://dx.doi.org/10.1111/ibi.12483 scopus:85028968091 wos:000410649500018 Ibis; 159(4), pp 919-924 (2017) ISSN: 0019-1019 Ecology energy management facultative hypothermia night-time ecology Parus major winter conditions contributiontojournal/article info:eu-repo/semantics/article text 2017 ftulundlup https://doi.org/10.1111/ibi.12483 2024-01-17T23:29:16Z Small wintering passerines adaptively modulate daily body mass acquisition as part of their energy management policy. However, whether birds optimize overnight mass loss or body mass at dawn remains poorly understood. We studied environmental correlates of individual variation in body mass at dusk, overnight mass loss and body mass at dawn in a wild population of Great Tits Parus major wintering in northern Fennoscandia. Body mass at dusk, overnight mass loss and body mass at dawn were independent of prevailing conditions despite extremely low night ambient temperatures. Body mass at dusk was higher in males than in females, and decreased throughout winter and when snowfall was higher in the previous month. Overnight mass loss increased with precipitation during the previous week and tended to be higher in mid-winter, when nights were longest. However, birds reduced overnight mass loss with higher temperatures in the previous week and higher precipitation in the previous 2 weeks. Dawn body mass was strongly correlated with dusk body mass and overnight mass loss, and showed only mild associations with weather variables once dusk mass was accounted for. Body mass in roosting boreal Great Tits seems to be constrained by recent snowfall as the winter progresses, but otherwise appears to be mostly unaffected by previous and current temperatures, suggesting a regular use of facultative hypothermia. Article in Journal/Newspaper Fennoscandia Lund University Publications (LUP) Parus ENVELOPE(3.950,3.950,-71.983,-71.983) Ibis 159 4 919 924 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology energy management facultative hypothermia night-time ecology Parus major winter conditions |
spellingShingle |
Ecology energy management facultative hypothermia night-time ecology Parus major winter conditions Broggi, Juli Koivula, Kari Hohtola, Esa Orell, Markku Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
topic_facet |
Ecology energy management facultative hypothermia night-time ecology Parus major winter conditions |
description |
Small wintering passerines adaptively modulate daily body mass acquisition as part of their energy management policy. However, whether birds optimize overnight mass loss or body mass at dawn remains poorly understood. We studied environmental correlates of individual variation in body mass at dusk, overnight mass loss and body mass at dawn in a wild population of Great Tits Parus major wintering in northern Fennoscandia. Body mass at dusk, overnight mass loss and body mass at dawn were independent of prevailing conditions despite extremely low night ambient temperatures. Body mass at dusk was higher in males than in females, and decreased throughout winter and when snowfall was higher in the previous month. Overnight mass loss increased with precipitation during the previous week and tended to be higher in mid-winter, when nights were longest. However, birds reduced overnight mass loss with higher temperatures in the previous week and higher precipitation in the previous 2 weeks. Dawn body mass was strongly correlated with dusk body mass and overnight mass loss, and showed only mild associations with weather variables once dusk mass was accounted for. Body mass in roosting boreal Great Tits seems to be constrained by recent snowfall as the winter progresses, but otherwise appears to be mostly unaffected by previous and current temperatures, suggesting a regular use of facultative hypothermia. |
format |
Article in Journal/Newspaper |
author |
Broggi, Juli Koivula, Kari Hohtola, Esa Orell, Markku |
author_facet |
Broggi, Juli Koivula, Kari Hohtola, Esa Orell, Markku |
author_sort |
Broggi, Juli |
title |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_short |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_full |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_fullStr |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_full_unstemmed |
Environmental drivers of roosting body mass variation in boreal Great Tits Parus major |
title_sort |
environmental drivers of roosting body mass variation in boreal great tits parus major |
publisher |
Wiley-Blackwell |
publishDate |
2017 |
url |
https://lup.lub.lu.se/record/73e0b342-344a-46fd-8aac-8f38e62e4f7c https://doi.org/10.1111/ibi.12483 |
long_lat |
ENVELOPE(3.950,3.950,-71.983,-71.983) |
geographic |
Parus |
geographic_facet |
Parus |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Ibis; 159(4), pp 919-924 (2017) ISSN: 0019-1019 |
op_relation |
https://lup.lub.lu.se/record/73e0b342-344a-46fd-8aac-8f38e62e4f7c http://dx.doi.org/10.1111/ibi.12483 scopus:85028968091 wos:000410649500018 |
op_doi |
https://doi.org/10.1111/ibi.12483 |
container_title |
Ibis |
container_volume |
159 |
container_issue |
4 |
container_start_page |
919 |
op_container_end_page |
924 |
_version_ |
1790600078222688256 |