Limits on phenological response to high temperature in the Arctic
Abstract Tundra plants are widely considered to be constrained by cool growing conditions and short growing seasons. Furthermore, phenological development is generally predicted by daily heat sums calculated as growing degree days. Analyzing over a decade of seasonal flower counts of 23 plant specie...
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ftdoajarticles:oai:doaj.org/article:ed4cc74b0ac845a08f62a7124f31c907 2023-05-15T14:57:08+02:00 Limits on phenological response to high temperature in the Arctic Sarah C. Elmendorf Robert D. Hollister 2023-01-01T00:00:00Z https://doi.org/10.1038/s41598-022-26955-9 https://doaj.org/article/ed4cc74b0ac845a08f62a7124f31c907 EN eng Nature Portfolio https://doi.org/10.1038/s41598-022-26955-9 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-022-26955-9 2045-2322 https://doaj.org/article/ed4cc74b0ac845a08f62a7124f31c907 Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023) Medicine R Science Q article 2023 ftdoajarticles https://doi.org/10.1038/s41598-022-26955-9 2023-01-15T01:29:36Z Abstract Tundra plants are widely considered to be constrained by cool growing conditions and short growing seasons. Furthermore, phenological development is generally predicted by daily heat sums calculated as growing degree days. Analyzing over a decade of seasonal flower counts of 23 plant species distributed across four plant communities, together with hourly canopy-temperature records, we show that the timing of flowering of many tundra plants are best predicted by a modified growing degree day model with a maximum temperature threshold. Threshold maximums are commonly employed in agriculture, but until recently have not been considered for natural ecosystems and to our knowledge have not been used for tundra plants. Estimated maximum temperature thresholds were found to be within the range of daily temperatures commonly experienced for many species, particularly for plants at the colder, high Arctic study site. These findings provide an explanation for why passive experimental warming—where moderate changes in mean daily temperatures are accompanied by larger changes in daily maximum temperatures—generally shifts plant phenology less than ambient warming. Our results also suggest that many plants adapted to extreme cold environments may have limits to their thermal responsiveness. Article in Journal/Newspaper Arctic Tundra Directory of Open Access Journals: DOAJ Articles Arctic Scientific Reports 13 1 |
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Directory of Open Access Journals: DOAJ Articles |
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Medicine R Science Q |
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Medicine R Science Q Sarah C. Elmendorf Robert D. Hollister Limits on phenological response to high temperature in the Arctic |
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Medicine R Science Q |
description |
Abstract Tundra plants are widely considered to be constrained by cool growing conditions and short growing seasons. Furthermore, phenological development is generally predicted by daily heat sums calculated as growing degree days. Analyzing over a decade of seasonal flower counts of 23 plant species distributed across four plant communities, together with hourly canopy-temperature records, we show that the timing of flowering of many tundra plants are best predicted by a modified growing degree day model with a maximum temperature threshold. Threshold maximums are commonly employed in agriculture, but until recently have not been considered for natural ecosystems and to our knowledge have not been used for tundra plants. Estimated maximum temperature thresholds were found to be within the range of daily temperatures commonly experienced for many species, particularly for plants at the colder, high Arctic study site. These findings provide an explanation for why passive experimental warming—where moderate changes in mean daily temperatures are accompanied by larger changes in daily maximum temperatures—generally shifts plant phenology less than ambient warming. Our results also suggest that many plants adapted to extreme cold environments may have limits to their thermal responsiveness. |
format |
Article in Journal/Newspaper |
author |
Sarah C. Elmendorf Robert D. Hollister |
author_facet |
Sarah C. Elmendorf Robert D. Hollister |
author_sort |
Sarah C. Elmendorf |
title |
Limits on phenological response to high temperature in the Arctic |
title_short |
Limits on phenological response to high temperature in the Arctic |
title_full |
Limits on phenological response to high temperature in the Arctic |
title_fullStr |
Limits on phenological response to high temperature in the Arctic |
title_full_unstemmed |
Limits on phenological response to high temperature in the Arctic |
title_sort |
limits on phenological response to high temperature in the arctic |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41598-022-26955-9 https://doaj.org/article/ed4cc74b0ac845a08f62a7124f31c907 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_source |
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023) |
op_relation |
https://doi.org/10.1038/s41598-022-26955-9 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-022-26955-9 2045-2322 https://doaj.org/article/ed4cc74b0ac845a08f62a7124f31c907 |
op_doi |
https://doi.org/10.1038/s41598-022-26955-9 |
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Scientific Reports |
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13 |
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1 |
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1766329232821059584 |