Disappearing green: Shrubs decline and bryophytes increase with nine years of increased snow accumulation in the High Arctic
Abstract Question How does increased snow depth affect plant community composition of High Arctic tundra, and can the Normalized Differential Vegetation Index ( NDVI ) detect induced changes? Location Adventdalen, Spitsbergen, Svalbard (78°10′ N, 16°04′ E). Methods We manipulated snow depth on the t...
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Online Access: | http://dx.doi.org/10.1111/jvs.12793 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jvs.12793 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jvs.12793 |
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crwiley:10.1111/jvs.12793 2024-06-23T07:44:59+00:00 Disappearing green: Shrubs decline and bryophytes increase with nine years of increased snow accumulation in the High Arctic Cooper, Elisabeth J. Little, Chelsea J. Pilsbacher, Anna K. Mörsdorf, Martin A. Pillar, Valerio Norges Forskningsråd 2019 http://dx.doi.org/10.1111/jvs.12793 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jvs.12793 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jvs.12793 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Journal of Vegetation Science volume 30, issue 5, page 857-867 ISSN 1100-9233 1654-1103 journal-article 2019 crwiley https://doi.org/10.1111/jvs.12793 2024-06-13T04:21:00Z Abstract Question How does increased snow depth affect plant community composition of High Arctic tundra, and can the Normalized Differential Vegetation Index ( NDVI ) detect induced changes? Location Adventdalen, Spitsbergen, Svalbard (78°10′ N, 16°04′ E). Methods We manipulated snow depth on the tundra using fences, resulting in Deep , Medium , and Ambient snow regimes. Increased snow led to warmer winter soil temperatures, a delayed onset of growing season and wetter conditions during the early growing season. Plant community composition of living and dead plant material was recorded after nine years. NDVI was measured at the plot level using a handheld sensor. Results Community composition and the abundance of typically dominant shrub species were substantially different in the Deep compared to the Ambient regime. Deep had lower cover of live shrubs ( Cassiope tetragona, Dryas octopetala and Salix polaris ) and Luzula confusa , and higher cover of dead shrubs ( Cassiope and Dryas ) compared to the other snow regimes. Bryophyte cover was highest in Medium . NDVI was positively correlated to the cover of living vascular plants and negatively correlated to cover of dead vascular plants. Accordingly, Deep snow regime had reduced NDVI , reflecting the contribution of dead Cassiope and Dryas . Conclusion Snow regime strongly influenced community composition in High Arctic plant communities. Enhanced snow regimes had more dead shrubs, reduced Luzula and increased bryophyte cover than ambient conditions. These differences were detectable by handheld NDVI sensors. Article in Journal/Newspaper Adventdalen Arctic Cassiope tetragona Dryas octopetala Luzula confusa Salix polaris Svalbard Tundra Spitsbergen Wiley Online Library Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Arctic Svalbard Journal of Vegetation Science 30 5 857 867 |
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crwiley |
language |
English |
description |
Abstract Question How does increased snow depth affect plant community composition of High Arctic tundra, and can the Normalized Differential Vegetation Index ( NDVI ) detect induced changes? Location Adventdalen, Spitsbergen, Svalbard (78°10′ N, 16°04′ E). Methods We manipulated snow depth on the tundra using fences, resulting in Deep , Medium , and Ambient snow regimes. Increased snow led to warmer winter soil temperatures, a delayed onset of growing season and wetter conditions during the early growing season. Plant community composition of living and dead plant material was recorded after nine years. NDVI was measured at the plot level using a handheld sensor. Results Community composition and the abundance of typically dominant shrub species were substantially different in the Deep compared to the Ambient regime. Deep had lower cover of live shrubs ( Cassiope tetragona, Dryas octopetala and Salix polaris ) and Luzula confusa , and higher cover of dead shrubs ( Cassiope and Dryas ) compared to the other snow regimes. Bryophyte cover was highest in Medium . NDVI was positively correlated to the cover of living vascular plants and negatively correlated to cover of dead vascular plants. Accordingly, Deep snow regime had reduced NDVI , reflecting the contribution of dead Cassiope and Dryas . Conclusion Snow regime strongly influenced community composition in High Arctic plant communities. Enhanced snow regimes had more dead shrubs, reduced Luzula and increased bryophyte cover than ambient conditions. These differences were detectable by handheld NDVI sensors. |
author2 |
Pillar, Valerio Norges Forskningsråd |
format |
Article in Journal/Newspaper |
author |
Cooper, Elisabeth J. Little, Chelsea J. Pilsbacher, Anna K. Mörsdorf, Martin A. |
spellingShingle |
Cooper, Elisabeth J. Little, Chelsea J. Pilsbacher, Anna K. Mörsdorf, Martin A. Disappearing green: Shrubs decline and bryophytes increase with nine years of increased snow accumulation in the High Arctic |
author_facet |
Cooper, Elisabeth J. Little, Chelsea J. Pilsbacher, Anna K. Mörsdorf, Martin A. |
author_sort |
Cooper, Elisabeth J. |
title |
Disappearing green: Shrubs decline and bryophytes increase with nine years of increased snow accumulation in the High Arctic |
title_short |
Disappearing green: Shrubs decline and bryophytes increase with nine years of increased snow accumulation in the High Arctic |
title_full |
Disappearing green: Shrubs decline and bryophytes increase with nine years of increased snow accumulation in the High Arctic |
title_fullStr |
Disappearing green: Shrubs decline and bryophytes increase with nine years of increased snow accumulation in the High Arctic |
title_full_unstemmed |
Disappearing green: Shrubs decline and bryophytes increase with nine years of increased snow accumulation in the High Arctic |
title_sort |
disappearing green: shrubs decline and bryophytes increase with nine years of increased snow accumulation in the high arctic |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/jvs.12793 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jvs.12793 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jvs.12793 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Adventdalen Arctic Svalbard |
geographic_facet |
Adventdalen Arctic Svalbard |
genre |
Adventdalen Arctic Cassiope tetragona Dryas octopetala Luzula confusa Salix polaris Svalbard Tundra Spitsbergen |
genre_facet |
Adventdalen Arctic Cassiope tetragona Dryas octopetala Luzula confusa Salix polaris Svalbard Tundra Spitsbergen |
op_source |
Journal of Vegetation Science volume 30, issue 5, page 857-867 ISSN 1100-9233 1654-1103 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/jvs.12793 |
container_title |
Journal of Vegetation Science |
container_volume |
30 |
container_issue |
5 |
container_start_page |
857 |
op_container_end_page |
867 |
_version_ |
1802642942026842112 |