Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites
Rising global temperatures are expected to increase reproductive costs for wildlife as greater thermoregulatory demands interfere with reproductive activities. However, predicting the temperatures at which reproductive performance is negatively impacted remains a significant hurdle. Using a thermore...
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Online Access: | https://doi.org/10.5061/dryad.vmcvdnctr |
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ftzenodo:oai:zenodo.org:6779528 2024-09-09T19:19:41+00:00 Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites O'Connor, Ryan Le Pogam, Audrey Young, Kevin Love, Oliver Cox, Christopher Roy, Gabrielle Robitaille, Francis Elliott, Kyle Hargreaves, Anna Choy, Emily Gilchrist, Grant Berteaux, Dominique Tam, Andrew Vézina, François 2022-06-29 https://doi.org/10.5061/dryad.vmcvdnctr unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.vmcvdnctr oai:zenodo.org:6779528 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode thermoregulatory polygon hyperthermia snow bunting Climate Change heat dissipation limit theory sustained performance info:eu-repo/semantics/other 2022 ftzenodo https://doi.org/10.5061/dryad.vmcvdnctr 2024-07-26T19:47:13Z Rising global temperatures are expected to increase reproductive costs for wildlife as greater thermoregulatory demands interfere with reproductive activities. However, predicting the temperatures at which reproductive performance is negatively impacted remains a significant hurdle. Using a thermoregulatory polygon approach, we derived a reproductive threshold temperature for an Arctic songbird–the snow bunting (Plectrophenax nivalis). We defined this threshold as the temperature at which individuals must reduce activity to suboptimal levels (i.e., < 4-times basal metabolic rate) to sustain nestling provisioning and avoid overheating. We then compared this threshold to operative temperatures recorded at high (82°N) and low (64°N) Arctic sites to estimate how heat constraints translate into site-specific impacts on sustained activity level. We predict buntings would become behaviourally constrained at operative temperatures above 11.7°C, whereupon they must reduce provisioning rates to avoid overheating. Low Arctic sites had larger fluctuations in solar radiation, consistently producing daily periods when operative temperatures exceeded 11.7°C. However, high-latitude birds faced entire, consecutive days when parents would be unable to sustain required provisioning rates. These data indicate that Arctic warming is likely already disrupting the breeding performance of cold-specialist birds and suggests counterintuitive and severe negative impacts of warming at higher-latitude breeding locations. Other/Unknown Material Arctic Climate change Plectrophenax nivalis Snow Bunting midnight sun Zenodo Arctic |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
thermoregulatory polygon hyperthermia snow bunting Climate Change heat dissipation limit theory sustained performance |
spellingShingle |
thermoregulatory polygon hyperthermia snow bunting Climate Change heat dissipation limit theory sustained performance O'Connor, Ryan Le Pogam, Audrey Young, Kevin Love, Oliver Cox, Christopher Roy, Gabrielle Robitaille, Francis Elliott, Kyle Hargreaves, Anna Choy, Emily Gilchrist, Grant Berteaux, Dominique Tam, Andrew Vézina, François Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites |
topic_facet |
thermoregulatory polygon hyperthermia snow bunting Climate Change heat dissipation limit theory sustained performance |
description |
Rising global temperatures are expected to increase reproductive costs for wildlife as greater thermoregulatory demands interfere with reproductive activities. However, predicting the temperatures at which reproductive performance is negatively impacted remains a significant hurdle. Using a thermoregulatory polygon approach, we derived a reproductive threshold temperature for an Arctic songbird–the snow bunting (Plectrophenax nivalis). We defined this threshold as the temperature at which individuals must reduce activity to suboptimal levels (i.e., < 4-times basal metabolic rate) to sustain nestling provisioning and avoid overheating. We then compared this threshold to operative temperatures recorded at high (82°N) and low (64°N) Arctic sites to estimate how heat constraints translate into site-specific impacts on sustained activity level. We predict buntings would become behaviourally constrained at operative temperatures above 11.7°C, whereupon they must reduce provisioning rates to avoid overheating. Low Arctic sites had larger fluctuations in solar radiation, consistently producing daily periods when operative temperatures exceeded 11.7°C. However, high-latitude birds faced entire, consecutive days when parents would be unable to sustain required provisioning rates. These data indicate that Arctic warming is likely already disrupting the breeding performance of cold-specialist birds and suggests counterintuitive and severe negative impacts of warming at higher-latitude breeding locations. |
format |
Other/Unknown Material |
author |
O'Connor, Ryan Le Pogam, Audrey Young, Kevin Love, Oliver Cox, Christopher Roy, Gabrielle Robitaille, Francis Elliott, Kyle Hargreaves, Anna Choy, Emily Gilchrist, Grant Berteaux, Dominique Tam, Andrew Vézina, François |
author_facet |
O'Connor, Ryan Le Pogam, Audrey Young, Kevin Love, Oliver Cox, Christopher Roy, Gabrielle Robitaille, Francis Elliott, Kyle Hargreaves, Anna Choy, Emily Gilchrist, Grant Berteaux, Dominique Tam, Andrew Vézina, François |
author_sort |
O'Connor, Ryan |
title |
Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites |
title_short |
Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites |
title_full |
Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites |
title_fullStr |
Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites |
title_full_unstemmed |
Warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-Arctic sites |
title_sort |
warming in the land of the midnight sun: breeding birds may suffer greater heat stress at high- vs low-arctic sites |
publisher |
Zenodo |
publishDate |
2022 |
url |
https://doi.org/10.5061/dryad.vmcvdnctr |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Plectrophenax nivalis Snow Bunting midnight sun |
genre_facet |
Arctic Climate change Plectrophenax nivalis Snow Bunting midnight sun |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.vmcvdnctr oai:zenodo.org:6779528 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.vmcvdnctr |
_version_ |
1809759752255700992 |