Sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition
Abstract Arctic ecosystems are increasingly exposed to extreme climatic events throughout the year, which can affect species performance. Cryptogams (bryophytes and lichens) provide important ecosystem services in polar ecosystems but may be physiologically affected or killed by extreme events. Thro...
Published in: | Physiologia Plantarum |
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Online Access: | http://dx.doi.org/10.1111/ppl.13882 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ppl.13882 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ppl.13882 |
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crwiley:10.1111/ppl.13882 2024-06-02T08:01:01+00:00 Sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition Bokhorst, Stef Bjerke, Jarle W. Phoenix, Gareth K. Jaakola, Laura Mæhre, Hanne K. Tømmervik, Hans Research Council of Norway 2023 http://dx.doi.org/10.1111/ppl.13882 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ppl.13882 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ppl.13882 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Physiologia Plantarum volume 175, issue 2 ISSN 0031-9317 1399-3054 journal-article 2023 crwiley https://doi.org/10.1111/ppl.13882 2024-05-06T07:01:44Z Abstract Arctic ecosystems are increasingly exposed to extreme climatic events throughout the year, which can affect species performance. Cryptogams (bryophytes and lichens) provide important ecosystem services in polar ecosystems but may be physiologically affected or killed by extreme events. Through field and laboratory manipulations, we compared physiological responses of seven dominant sub‐Arctic cryptogams (three bryophytes, four lichens) to single events and factorial combinations of mid‐winter heatwave (6°C for 7 days), re‐freezing, snow removal and summer nitrogen addition. We aimed to identify which mosses and lichens are vulnerable to these abiotic extremes and if combinations would exacerbate physiological responses. Combinations of extremes resulted in stronger species responses but included idiosyncratic species‐specific responses. Species that remained dormant during winter (March), irrespective of extremes, showed little physiological response during summer (August). However, winter physiological activity, and response to winter extremes, was not consistently associated with summer physiological impacts. Winter extremes affect cryptogam physiology, but summer responses appear mild, and lichens affect the photobiont more than the mycobiont. Accounting for Arctic cryptogam response to multiple climatic extremes in ecosystem functioning and modelling will require a better understanding of their winter eco‐physiology and repair capabilities. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Physiologia Plantarum 175 2 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Arctic ecosystems are increasingly exposed to extreme climatic events throughout the year, which can affect species performance. Cryptogams (bryophytes and lichens) provide important ecosystem services in polar ecosystems but may be physiologically affected or killed by extreme events. Through field and laboratory manipulations, we compared physiological responses of seven dominant sub‐Arctic cryptogams (three bryophytes, four lichens) to single events and factorial combinations of mid‐winter heatwave (6°C for 7 days), re‐freezing, snow removal and summer nitrogen addition. We aimed to identify which mosses and lichens are vulnerable to these abiotic extremes and if combinations would exacerbate physiological responses. Combinations of extremes resulted in stronger species responses but included idiosyncratic species‐specific responses. Species that remained dormant during winter (March), irrespective of extremes, showed little physiological response during summer (August). However, winter physiological activity, and response to winter extremes, was not consistently associated with summer physiological impacts. Winter extremes affect cryptogam physiology, but summer responses appear mild, and lichens affect the photobiont more than the mycobiont. Accounting for Arctic cryptogam response to multiple climatic extremes in ecosystem functioning and modelling will require a better understanding of their winter eco‐physiology and repair capabilities. |
author2 |
Research Council of Norway |
format |
Article in Journal/Newspaper |
author |
Bokhorst, Stef Bjerke, Jarle W. Phoenix, Gareth K. Jaakola, Laura Mæhre, Hanne K. Tømmervik, Hans |
spellingShingle |
Bokhorst, Stef Bjerke, Jarle W. Phoenix, Gareth K. Jaakola, Laura Mæhre, Hanne K. Tømmervik, Hans Sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition |
author_facet |
Bokhorst, Stef Bjerke, Jarle W. Phoenix, Gareth K. Jaakola, Laura Mæhre, Hanne K. Tømmervik, Hans |
author_sort |
Bokhorst, Stef |
title |
Sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition |
title_short |
Sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition |
title_full |
Sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition |
title_fullStr |
Sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition |
title_full_unstemmed |
Sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition |
title_sort |
sub‐arctic mosses and lichens show idiosyncratic responses to combinations of winter heatwaves, freezing and nitrogen deposition |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1111/ppl.13882 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ppl.13882 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ppl.13882 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Physiologia Plantarum volume 175, issue 2 ISSN 0031-9317 1399-3054 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/ppl.13882 |
container_title |
Physiologia Plantarum |
container_volume |
175 |
container_issue |
2 |
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1800745257813409792 |