More frequent extreme climate events stabilize reindeer population dynamics
Extreme climate events often cause population crashes but are difficult to account for in population-dynamic studies. Especially in long-lived animals, density dependence and demography may induce lagged impacts of perturbations on population growth. In Arctic ungulates, extreme rain-on-snow and ice...
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Online Access: | http://hdl.handle.net/11250/2612446 https://doi.org/10.1038/s41467-019-09332-5 |
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ftunivmob:oai:nmbu.brage.unit.no:11250/2612446 2023-05-15T14:55:15+02:00 More frequent extreme climate events stabilize reindeer population dynamics Hansen, Brage Bremset Gamelon, Marlène Albon, Steve D. Lee, Aline Magdalena Stien, Audun Irvine, Robert Justin Sæther, Bernt-Erik Loe, Leif Egil Ropstad, Erik Veiberg, Vebjørn Grøtan, Vidar 2019-03-06T06:58:01Z application/pdf http://hdl.handle.net/11250/2612446 https://doi.org/10.1038/s41467-019-09332-5 eng eng https://www.nature.com/articles/s41467-019-09332-5 Norges forskningsråd: 244647 Norges forskningsråd: 216051 Norges forskningsråd: 276080 Norges forskningsråd: 223257 Nature communications, 2019;10(1):1616 urn:issn:2041-1723 http://hdl.handle.net/11250/2612446 https://doi.org/10.1038/s41467-019-09332-5 cristin:1682518 Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no CC-BY-NC-ND 10 Nature Communications Journal article Peer reviewed 2019 ftunivmob https://doi.org/10.1038/s41467-019-09332-5 2021-09-23T20:16:10Z Extreme climate events often cause population crashes but are difficult to account for in population-dynamic studies. Especially in long-lived animals, density dependence and demography may induce lagged impacts of perturbations on population growth. In Arctic ungulates, extreme rain-on-snow and ice-locked pastures have led to severe population crashes, indicating that increasingly frequent rain-on-snow events could destabilize populations. Here, using empirically parameterized, stochastic population models for High-Arctic wild reindeer, we show that more frequent rain-on-snow events actually reduce extinction risk and stabilize population dynamics due to interactions with age structure and density dependence. Extreme rain-on-snow events mainly suppress vital rates of vulnerable ages at high population densities, resulting in a crash and a new population state with resilient ages and reduced population sensitivity to subsequent icy winters. Thus, observed responses to single extreme events are poor predictors of population dynamics and persistence because internal density-dependent feedbacks act as a buffer against more frequent events. publishedVersion Article in Journal/Newspaper Arctic Open archive Norwegian University of Life Sciences: Brage NMBU Arctic Nature Communications 10 1 |
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Open Polar |
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Open archive Norwegian University of Life Sciences: Brage NMBU |
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ftunivmob |
language |
English |
description |
Extreme climate events often cause population crashes but are difficult to account for in population-dynamic studies. Especially in long-lived animals, density dependence and demography may induce lagged impacts of perturbations on population growth. In Arctic ungulates, extreme rain-on-snow and ice-locked pastures have led to severe population crashes, indicating that increasingly frequent rain-on-snow events could destabilize populations. Here, using empirically parameterized, stochastic population models for High-Arctic wild reindeer, we show that more frequent rain-on-snow events actually reduce extinction risk and stabilize population dynamics due to interactions with age structure and density dependence. Extreme rain-on-snow events mainly suppress vital rates of vulnerable ages at high population densities, resulting in a crash and a new population state with resilient ages and reduced population sensitivity to subsequent icy winters. Thus, observed responses to single extreme events are poor predictors of population dynamics and persistence because internal density-dependent feedbacks act as a buffer against more frequent events. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hansen, Brage Bremset Gamelon, Marlène Albon, Steve D. Lee, Aline Magdalena Stien, Audun Irvine, Robert Justin Sæther, Bernt-Erik Loe, Leif Egil Ropstad, Erik Veiberg, Vebjørn Grøtan, Vidar |
spellingShingle |
Hansen, Brage Bremset Gamelon, Marlène Albon, Steve D. Lee, Aline Magdalena Stien, Audun Irvine, Robert Justin Sæther, Bernt-Erik Loe, Leif Egil Ropstad, Erik Veiberg, Vebjørn Grøtan, Vidar More frequent extreme climate events stabilize reindeer population dynamics |
author_facet |
Hansen, Brage Bremset Gamelon, Marlène Albon, Steve D. Lee, Aline Magdalena Stien, Audun Irvine, Robert Justin Sæther, Bernt-Erik Loe, Leif Egil Ropstad, Erik Veiberg, Vebjørn Grøtan, Vidar |
author_sort |
Hansen, Brage Bremset |
title |
More frequent extreme climate events stabilize reindeer population dynamics |
title_short |
More frequent extreme climate events stabilize reindeer population dynamics |
title_full |
More frequent extreme climate events stabilize reindeer population dynamics |
title_fullStr |
More frequent extreme climate events stabilize reindeer population dynamics |
title_full_unstemmed |
More frequent extreme climate events stabilize reindeer population dynamics |
title_sort |
more frequent extreme climate events stabilize reindeer population dynamics |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2612446 https://doi.org/10.1038/s41467-019-09332-5 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
10 Nature Communications |
op_relation |
https://www.nature.com/articles/s41467-019-09332-5 Norges forskningsråd: 244647 Norges forskningsråd: 216051 Norges forskningsråd: 276080 Norges forskningsråd: 223257 Nature communications, 2019;10(1):1616 urn:issn:2041-1723 http://hdl.handle.net/11250/2612446 https://doi.org/10.1038/s41467-019-09332-5 cristin:1682518 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1038/s41467-019-09332-5 |
container_title |
Nature Communications |
container_volume |
10 |
container_issue |
1 |
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1766327036019736576 |