Greening on the Bathurst caribou range in northern Canada: are erect shrubs responsible for remotely sensed trends?
Remote sensing has detected recent trends of increased vegetation productivity on the Bathurst caribou herd’s range. The cause of this spectral greening is unknown but is hypothesized to be the result of a change in the composition, establishment, structure, and/or growth of erect deciduous shrubs....
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Canadian Science Publishing
2023
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Online Access: | https://doi.org/10.1139/as-2022-0036 https://doaj.org/article/f90b8caaf5bd41b48772071708f5f6a8 |
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ftdoajarticles:oai:doaj.org/article:f90b8caaf5bd41b48772071708f5f6a8 2023-10-01T03:52:30+02:00 Greening on the Bathurst caribou range in northern Canada: are erect shrubs responsible for remotely sensed trends? Carolyn Bonta Gregory M. King Ryan K. Danby 2023-09-01T00:00:00Z https://doi.org/10.1139/as-2022-0036 https://doaj.org/article/f90b8caaf5bd41b48772071708f5f6a8 EN FR eng fre Canadian Science Publishing https://cdnsciencepub.com/doi/10.1139/as-2022-0036 https://doaj.org/toc/2368-7460 doi:10.1139/as-2022-0036 2368-7460 https://doaj.org/article/f90b8caaf5bd41b48772071708f5f6a8 Arctic Science, Vol 9, Iss 3, Pp 581-599 (2023) vegetation productivity Arctic greening dendroecology tundra shrubification Environmental sciences GE1-350 Environmental engineering TA170-171 article 2023 ftdoajarticles https://doi.org/10.1139/as-2022-0036 2023-09-03T00:48:51Z Remote sensing has detected recent trends of increased vegetation productivity on the Bathurst caribou herd’s range. The cause of this spectral greening is unknown but is hypothesized to be the result of a change in the composition, establishment, structure, and/or growth of erect deciduous shrubs. We combined field investigation and dendroecology to compare shrubs between areas where productivity has increased (Greening sites) and areas where productivity has remained stable (No Change sites) based on a Moderate Resolution Imaging Spectroradiometer time series for the period from 2000 to 2017. Contrary to expectations, species composition, timing of stem establishment, stem density, stem length, and vertical and diameter growth rates did not differ between the two site types. However, shrub cover was 13% greater at Greening sites and shrubs at No Change sites had 9% more dead stems regardless of the size of the shrub. This suggests that the differences observed remotely are due to a combination of increased foliage production or survival at Greening sites and a dimming of the vegetation index at No Change sites. Our findings offer a population-level validation of specific shrub characteristics contributing to trends in spectral greening in an understudied region of the southern Arctic tundra. Article in Journal/Newspaper Arctic Arctic Greening Arctic Tundra Directory of Open Access Journals: DOAJ Articles Arctic Canada Caribou Range ENVELOPE(-125.436,-125.436,59.750,59.750) Arctic Science |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
vegetation productivity Arctic greening dendroecology tundra shrubification Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
vegetation productivity Arctic greening dendroecology tundra shrubification Environmental sciences GE1-350 Environmental engineering TA170-171 Carolyn Bonta Gregory M. King Ryan K. Danby Greening on the Bathurst caribou range in northern Canada: are erect shrubs responsible for remotely sensed trends? |
topic_facet |
vegetation productivity Arctic greening dendroecology tundra shrubification Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
Remote sensing has detected recent trends of increased vegetation productivity on the Bathurst caribou herd’s range. The cause of this spectral greening is unknown but is hypothesized to be the result of a change in the composition, establishment, structure, and/or growth of erect deciduous shrubs. We combined field investigation and dendroecology to compare shrubs between areas where productivity has increased (Greening sites) and areas where productivity has remained stable (No Change sites) based on a Moderate Resolution Imaging Spectroradiometer time series for the period from 2000 to 2017. Contrary to expectations, species composition, timing of stem establishment, stem density, stem length, and vertical and diameter growth rates did not differ between the two site types. However, shrub cover was 13% greater at Greening sites and shrubs at No Change sites had 9% more dead stems regardless of the size of the shrub. This suggests that the differences observed remotely are due to a combination of increased foliage production or survival at Greening sites and a dimming of the vegetation index at No Change sites. Our findings offer a population-level validation of specific shrub characteristics contributing to trends in spectral greening in an understudied region of the southern Arctic tundra. |
format |
Article in Journal/Newspaper |
author |
Carolyn Bonta Gregory M. King Ryan K. Danby |
author_facet |
Carolyn Bonta Gregory M. King Ryan K. Danby |
author_sort |
Carolyn Bonta |
title |
Greening on the Bathurst caribou range in northern Canada: are erect shrubs responsible for remotely sensed trends? |
title_short |
Greening on the Bathurst caribou range in northern Canada: are erect shrubs responsible for remotely sensed trends? |
title_full |
Greening on the Bathurst caribou range in northern Canada: are erect shrubs responsible for remotely sensed trends? |
title_fullStr |
Greening on the Bathurst caribou range in northern Canada: are erect shrubs responsible for remotely sensed trends? |
title_full_unstemmed |
Greening on the Bathurst caribou range in northern Canada: are erect shrubs responsible for remotely sensed trends? |
title_sort |
greening on the bathurst caribou range in northern canada: are erect shrubs responsible for remotely sensed trends? |
publisher |
Canadian Science Publishing |
publishDate |
2023 |
url |
https://doi.org/10.1139/as-2022-0036 https://doaj.org/article/f90b8caaf5bd41b48772071708f5f6a8 |
long_lat |
ENVELOPE(-125.436,-125.436,59.750,59.750) |
geographic |
Arctic Canada Caribou Range |
geographic_facet |
Arctic Canada Caribou Range |
genre |
Arctic Arctic Greening Arctic Tundra |
genre_facet |
Arctic Arctic Greening Arctic Tundra |
op_source |
Arctic Science, Vol 9, Iss 3, Pp 581-599 (2023) |
op_relation |
https://cdnsciencepub.com/doi/10.1139/as-2022-0036 https://doaj.org/toc/2368-7460 doi:10.1139/as-2022-0036 2368-7460 https://doaj.org/article/f90b8caaf5bd41b48772071708f5f6a8 |
op_doi |
https://doi.org/10.1139/as-2022-0036 |
container_title |
Arctic Science |
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1778518659694592000 |