Data from: Arctic greening from warming promotes declines in caribou populations
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 provi...
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ftdryad:oai:v1.datadryad.org:10255/dryad.142618 2023-05-15T14:24:58+02:00 Data from: Arctic greening from warming promotes declines in caribou populations Fauchald, Per Park, Taejin Tømmervik, Hans Myneni, Ranga Hausner, Vera Helene Arctic North America 2017-05-01T19:18:39Z http://hdl.handle.net/10255/dryad.142618 https://doi.org/10.5061/dryad.d12t1 unknown 3;e1601365;2017 doi:10.5061/dryad.d12t1/1 doi:10.1126/sciadv.1601365 doi:10.5061/dryad.d12t1 Fauchald P, Park T, Tømmervik H, Myneni R, Hausner VH (2017) Arctic greening from warming promotes declines in caribou populations. Science Advances 3(4): e1601365. 2375-2548 http://hdl.handle.net/10255/dryad.142618 migratory tundra caribou climate change Arctic greening NDVI sea-ice Article 2017 ftdryad https://doi.org/10.5061/dryad.d12t1 https://doi.org/10.5061/dryad.d12t1/1 https://doi.org/10.1126/sciadv.1601365 2020-01-01T15:49:08Z 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 Climate change Sea ice Tundra Dryad Digital Repository (Duke University) Arctic Arctic Ocean |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
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ftdryad |
language |
unknown |
topic |
migratory tundra caribou climate change Arctic greening NDVI sea-ice |
spellingShingle |
migratory tundra caribou climate change Arctic greening NDVI sea-ice Fauchald, Per Park, Taejin Tømmervik, Hans Myneni, Ranga Hausner, Vera Helene Data from: Arctic greening from warming promotes declines in caribou populations |
topic_facet |
migratory tundra caribou climate change Arctic greening NDVI sea-ice |
description |
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 Hausner, Vera Helene |
author_facet |
Fauchald, Per Park, Taejin Tømmervik, Hans Myneni, Ranga Hausner, Vera Helene |
author_sort |
Fauchald, Per |
title |
Data from: Arctic greening from warming promotes declines in caribou populations |
title_short |
Data from: Arctic greening from warming promotes declines in caribou populations |
title_full |
Data from: Arctic greening from warming promotes declines in caribou populations |
title_fullStr |
Data from: Arctic greening from warming promotes declines in caribou populations |
title_full_unstemmed |
Data from: Arctic greening from warming promotes declines in caribou populations |
title_sort |
data from: arctic greening from warming promotes declines in caribou populations |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.142618 https://doi.org/10.5061/dryad.d12t1 |
op_coverage |
Arctic North America |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Greening Arctic Arctic Ocean Climate change Sea ice Tundra |
genre_facet |
Arctic Arctic Greening Arctic Arctic Ocean Climate change Sea ice Tundra |
op_relation |
3;e1601365;2017 doi:10.5061/dryad.d12t1/1 doi:10.1126/sciadv.1601365 doi:10.5061/dryad.d12t1 Fauchald P, Park T, Tømmervik H, Myneni R, Hausner VH (2017) Arctic greening from warming promotes declines in caribou populations. Science Advances 3(4): e1601365. 2375-2548 http://hdl.handle.net/10255/dryad.142618 |
op_doi |
https://doi.org/10.5061/dryad.d12t1 https://doi.org/10.5061/dryad.d12t1/1 https://doi.org/10.1126/sciadv.1601365 |
_version_ |
1766297404907192320 |