Arctic plants are capable of sustained responses to long-term warming
Previous studies have shown that Arctic plants typically respond to warming with increased growth and reproductive effort and accelerated phenology, and that the magnitude of these responses is likely to change over time. We investigated the effects of long-term experimental warming on plant growth...
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ftjpolarres:oai:journals.openacademia.net:article/3278 2024-09-09T19:22:40+00:00 Arctic plants are capable of sustained responses to long-term warming Barrett, Robert T. Hollister, Robert D. 2016-05-05 application/pdf text/html application/epub+zip application/xml https://polarresearch.net/index.php/polar/article/view/3278 https://doi.org/10.3402/polar.v35.25405 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3278/pdf_79 https://polarresearch.net/index.php/polar/article/view/3278/html_66 https://polarresearch.net/index.php/polar/article/view/3278/_65 https://polarresearch.net/index.php/polar/article/view/3278/xml_63 https://polarresearch.net/index.php/polar/article/view/3278/8826 https://polarresearch.net/index.php/polar/article/view/3278 doi:10.3402/polar.v35.25405 Polar Research; Vol 35 (2016) 1751-8369 Species traits International Tundra Experiment meta-analysis plant–climate interactions tundra vegetation warming response info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftjpolarres https://doi.org/10.3402/polar.v35.25405 2024-06-20T23:33:17Z Previous studies have shown that Arctic plants typically respond to warming with increased growth and reproductive effort and accelerated phenology, and that the magnitude of these responses is likely to change over time. We investigated the effects of long-term experimental warming on plant growth (leaf length) and reproduction (inflorescence height, reproductive phenology and reproductive effort) using 17–19 years of measurements collected as part of the International Tundra Experiment (ITEX) at sites near Barrow and Atqasuk, Alaska. During the study period, linear regressions indicated non-significant tendencies towards warming air temperatures at our study sites. Results of our meta-analyses on the effect size of experimental warming (calculated as Hedges’ d) indicated species generally responded to warming by increasing inflorescence height, increasing leaf length and flowering earlier, while reproductive effort did not respond consistently. Using weighted least-squares regressions on effect sizes, we found a significant trend towards dampened response to experimental warming over time for reproductive phenology. This tendency was consistent, though non-significant, across all traits. A separate analysis revealed significant trends towards reduced responses to experimental warming during warmer summers for all traits. We therefore propose that tendencies towards dampened plant responses to experimental warming over time are the result of regional warming. These results show that Arctic plants are capable of sustained responses to warming over long periods of time but also suggest that, as the region continues to warm, factors such as nutrient availability, competition and herbivory will become more limiting to plant growth and reproduction than temperature.Keywords: Species traits; International Tundra Experiment; meta-analysis; plant–climate interactions; tundra vegetation; warming response.(Published: 5 May 2016)To access the supplementary material for this article, please see the supplementary file in ... Article in Journal/Newspaper Arctic Barrow Polar Research Tundra Alaska Polar Research Arctic Polar Research 35 1 25405 |
institution |
Open Polar |
collection |
Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Species traits International Tundra Experiment meta-analysis plant–climate interactions tundra vegetation warming response |
spellingShingle |
Species traits International Tundra Experiment meta-analysis plant–climate interactions tundra vegetation warming response Barrett, Robert T. Hollister, Robert D. Arctic plants are capable of sustained responses to long-term warming |
topic_facet |
Species traits International Tundra Experiment meta-analysis plant–climate interactions tundra vegetation warming response |
description |
Previous studies have shown that Arctic plants typically respond to warming with increased growth and reproductive effort and accelerated phenology, and that the magnitude of these responses is likely to change over time. We investigated the effects of long-term experimental warming on plant growth (leaf length) and reproduction (inflorescence height, reproductive phenology and reproductive effort) using 17–19 years of measurements collected as part of the International Tundra Experiment (ITEX) at sites near Barrow and Atqasuk, Alaska. During the study period, linear regressions indicated non-significant tendencies towards warming air temperatures at our study sites. Results of our meta-analyses on the effect size of experimental warming (calculated as Hedges’ d) indicated species generally responded to warming by increasing inflorescence height, increasing leaf length and flowering earlier, while reproductive effort did not respond consistently. Using weighted least-squares regressions on effect sizes, we found a significant trend towards dampened response to experimental warming over time for reproductive phenology. This tendency was consistent, though non-significant, across all traits. A separate analysis revealed significant trends towards reduced responses to experimental warming during warmer summers for all traits. We therefore propose that tendencies towards dampened plant responses to experimental warming over time are the result of regional warming. These results show that Arctic plants are capable of sustained responses to warming over long periods of time but also suggest that, as the region continues to warm, factors such as nutrient availability, competition and herbivory will become more limiting to plant growth and reproduction than temperature.Keywords: Species traits; International Tundra Experiment; meta-analysis; plant–climate interactions; tundra vegetation; warming response.(Published: 5 May 2016)To access the supplementary material for this article, please see the supplementary file in ... |
format |
Article in Journal/Newspaper |
author |
Barrett, Robert T. Hollister, Robert D. |
author_facet |
Barrett, Robert T. Hollister, Robert D. |
author_sort |
Barrett, Robert T. |
title |
Arctic plants are capable of sustained responses to long-term warming |
title_short |
Arctic plants are capable of sustained responses to long-term warming |
title_full |
Arctic plants are capable of sustained responses to long-term warming |
title_fullStr |
Arctic plants are capable of sustained responses to long-term warming |
title_full_unstemmed |
Arctic plants are capable of sustained responses to long-term warming |
title_sort |
arctic plants are capable of sustained responses to long-term warming |
publisher |
Norwegian Polar Institute |
publishDate |
2016 |
url |
https://polarresearch.net/index.php/polar/article/view/3278 https://doi.org/10.3402/polar.v35.25405 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Barrow Polar Research Tundra Alaska |
genre_facet |
Arctic Barrow Polar Research Tundra Alaska |
op_source |
Polar Research; Vol 35 (2016) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3278/pdf_79 https://polarresearch.net/index.php/polar/article/view/3278/html_66 https://polarresearch.net/index.php/polar/article/view/3278/_65 https://polarresearch.net/index.php/polar/article/view/3278/xml_63 https://polarresearch.net/index.php/polar/article/view/3278/8826 https://polarresearch.net/index.php/polar/article/view/3278 doi:10.3402/polar.v35.25405 |
op_doi |
https://doi.org/10.3402/polar.v35.25405 |
container_title |
Polar Research |
container_volume |
35 |
container_issue |
1 |
container_start_page |
25405 |
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