Arctic greening from warming promotes declines in caribou populations
Source at http://dx.doi.org/10.1126/sciadv.1601365 . The migratory tundra caribou herds in North America follow decadal population cycles, and browsing from abundant caribou could be expected to counteract the current climate-driven expansion of shrubs in the circumpolar tundra biome. We demonstrate...
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Online Access: | https://hdl.handle.net/10037/11387 https://doi.org/10.1126/sciadv.1601365 |
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ftunivtroemsoe:oai:munin.uit.no:10037/11387 2023-05-15T14:26:08+02:00 Arctic greening from warming promotes declines in caribou populations Fauchald, Per Park, Taejin Tømmervik, Hans Myneni, Ranga B. Hausner, Vera Helene 2017-04-26 https://hdl.handle.net/10037/11387 https://doi.org/10.1126/sciadv.1601365 eng eng American Association for the Advancement of Science Science Advances eu-repo/grantAgreement/RCN/TUNDRA/192040/Norway/TVERS:DriversOfChangeInCircumpolarTundraEcosystems// eu-repo/grantAgreement/RCN/KLIMAFORSK/247474/Norway/GlobalConnectionsAndChangingResourceUseSystemsInTheArctic// Fauchald P, Park T, Tømmervik H, Myneni RB, Hausner VH. Arctic greening from warming promotes declines in caribou populations. Science Advances. 2017;3(4) FRIDAID 1466939 https://doi.org/10.1126/sciadv.1601365 2375-2548 https://hdl.handle.net/10037/11387 openAccess VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoogeografi: 486 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoogeography: 486 Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.1126/sciadv.1601365 2021-06-25T17:55:13Z Source at http://dx.doi.org/10.1126/sciadv.1601365 . The migratory tundra caribou herds in North America follow decadal population cycles, and browsing from abundant caribou could be expected to counteract the current climate-driven expansion of shrubs in the circumpolar tundra biome. We demonstrate that the sea ice cover in the Arctic Ocean has provided a strong signal for climate-induced changes on the adjacent caribou summer ranges, outperforming other climate indices in explaining the caribou-plant dynamics. We found no evidence of a negative effect of caribou abundance on vegetation biomass. On the contrary, we found a strong bottom-up effect in which a warmer climate related to diminishing sea ice has increased the plant biomass on the summer pastures, along with a paradoxical decline in caribou populations. This result suggests that this climate-induced greening has been accompanied by a deterioration of pasture quality. The shrub expansion in Arctic North America involves plant species with strong antibrowsing defenses.Our results might therefore be an early signal of a climate-driven shift in the caribou-plant interaction from a system with low plant biomass modulated by cyclic caribou populations to a system dominated by nonedible shrubs and diminishing herds of migratory caribou. Article in Journal/Newspaper Arctic Arctic Greening Arctic Arctic Ocean Sea ice Tundra University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Science Advances 3 4 e1601365 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoogeografi: 486 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoogeography: 486 |
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VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoogeografi: 486 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoogeography: 486 Fauchald, Per Park, Taejin Tømmervik, Hans Myneni, Ranga B. Hausner, Vera Helene Arctic greening from warming promotes declines in caribou populations |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoogeografi: 486 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoogeography: 486 |
description |
Source at http://dx.doi.org/10.1126/sciadv.1601365 . The migratory tundra caribou herds in North America follow decadal population cycles, and browsing from abundant caribou could be expected to counteract the current climate-driven expansion of shrubs in the circumpolar tundra biome. We demonstrate that the sea ice cover in the Arctic Ocean has provided a strong signal for climate-induced changes on the adjacent caribou summer ranges, outperforming other climate indices in explaining the caribou-plant dynamics. We found no evidence of a negative effect of caribou abundance on vegetation biomass. On the contrary, we found a strong bottom-up effect in which a warmer climate related to diminishing sea ice has increased the plant biomass on the summer pastures, along with a paradoxical decline in caribou populations. This result suggests that this climate-induced greening has been accompanied by a deterioration of pasture quality. The shrub expansion in Arctic North America involves plant species with strong antibrowsing defenses.Our results might therefore be an early signal of a climate-driven shift in the caribou-plant interaction from a system with low plant biomass modulated by cyclic caribou populations to a system dominated by nonedible shrubs and diminishing herds of migratory caribou. |
format |
Article in Journal/Newspaper |
author |
Fauchald, Per Park, Taejin Tømmervik, Hans Myneni, Ranga B. Hausner, Vera Helene |
author_facet |
Fauchald, Per Park, Taejin Tømmervik, Hans Myneni, Ranga B. Hausner, Vera Helene |
author_sort |
Fauchald, Per |
title |
Arctic greening from warming promotes declines in caribou populations |
title_short |
Arctic greening from warming promotes declines in caribou populations |
title_full |
Arctic greening from warming promotes declines in caribou populations |
title_fullStr |
Arctic greening from warming promotes declines in caribou populations |
title_full_unstemmed |
Arctic greening from warming promotes declines in caribou populations |
title_sort |
arctic greening from warming promotes declines in caribou populations |
publisher |
American Association for the Advancement of Science |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/11387 https://doi.org/10.1126/sciadv.1601365 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Greening Arctic Arctic Ocean Sea ice Tundra |
genre_facet |
Arctic Arctic Greening Arctic Arctic Ocean Sea ice Tundra |
op_relation |
Science Advances eu-repo/grantAgreement/RCN/TUNDRA/192040/Norway/TVERS:DriversOfChangeInCircumpolarTundraEcosystems// eu-repo/grantAgreement/RCN/KLIMAFORSK/247474/Norway/GlobalConnectionsAndChangingResourceUseSystemsInTheArctic// Fauchald P, Park T, Tømmervik H, Myneni RB, Hausner VH. Arctic greening from warming promotes declines in caribou populations. Science Advances. 2017;3(4) FRIDAID 1466939 https://doi.org/10.1126/sciadv.1601365 2375-2548 https://hdl.handle.net/10037/11387 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1126/sciadv.1601365 |
container_title |
Science Advances |
container_volume |
3 |
container_issue |
4 |
container_start_page |
e1601365 |
_version_ |
1766298613089042432 |