Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient
The increase in temperature as consequence of the recent global warming has been reported to generate new ice-free areas in the Antarctic continent, facilitating the colonization and spread of plant populations. Consequently, Antarctic vascular plants have been observed extending their southern dist...
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ftpubmed:oai:pubmedcentral.nih.gov:5607920 2023-05-15T13:45:51+02:00 Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient Acuña-Rodríguez, Ian S. Torres-Díaz, Cristian Hereme, Rasme Molina-Montenegro, Marco A. 2017-09-18 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5607920/ http://www.ncbi.nlm.nih.gov/pubmed/28948096 https://doi.org/10.7717/peerj.3718 en eng PeerJ Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5607920/ http://www.ncbi.nlm.nih.gov/pubmed/28948096 http://dx.doi.org/10.7717/peerj.3718 ©2017 Acuña-Rodríguez et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. CC-BY Ecology Text 2017 ftpubmed https://doi.org/10.7717/peerj.3718 2017-10-01T00:10:28Z The increase in temperature as consequence of the recent global warming has been reported to generate new ice-free areas in the Antarctic continent, facilitating the colonization and spread of plant populations. Consequently, Antarctic vascular plants have been observed extending their southern distribution. But as the environmental conditions toward southern localities become progressively more departed from the species’ physiological optimum, the ecophysiological responses and survival to the expected global warming could be reduced. However, if processes of local adaptation are the main cause of the observed southern expansion, those populations could appear constrained to respond positively to the expected global warming. Using individuals from the southern tip of South America, the South Shetland Islands and the Antarctic Peninsula, we assess with a long term experiment (three years) under controlled conditions if the responsiveness of Colobanthus quitensis populations to the expected global warming, is related with their different foliar traits and photoprotective mechanisms along the latitudinal gradient. In addition, we tested if the release of the stress condition by the global warming in these cold environments increases the ecophysiological performance. For this, we describe the latitudinal pattern of net photosynthetic capacity, biomass accumulation, and number of flowers under current and future temperatures respective to each site of origin after three growing seasons. Overall, was found a clinal trend was found in the foliar traits and photoprotective mechanisms in the evaluated C. quitensis populations. On the other hand, an asymmetric response to warming was observed for southern populations in all ecophysiological traits evaluated, suggesting that low temperature is limiting the performance of C. quitensis populations. Our results suggest that under a global warming scenario, plant populations that inhabiting cold zones at high latitudes could increase in their ecophysiological performance, ... Text Antarc* Antarctic Antarctic Peninsula South Shetland Islands PubMed Central (PMC) Antarctic Antarctic Peninsula South Shetland Islands The Antarctic PeerJ 5 e3718 |
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English |
topic |
Ecology |
spellingShingle |
Ecology Acuña-Rodríguez, Ian S. Torres-Díaz, Cristian Hereme, Rasme Molina-Montenegro, Marco A. Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient |
topic_facet |
Ecology |
description |
The increase in temperature as consequence of the recent global warming has been reported to generate new ice-free areas in the Antarctic continent, facilitating the colonization and spread of plant populations. Consequently, Antarctic vascular plants have been observed extending their southern distribution. But as the environmental conditions toward southern localities become progressively more departed from the species’ physiological optimum, the ecophysiological responses and survival to the expected global warming could be reduced. However, if processes of local adaptation are the main cause of the observed southern expansion, those populations could appear constrained to respond positively to the expected global warming. Using individuals from the southern tip of South America, the South Shetland Islands and the Antarctic Peninsula, we assess with a long term experiment (three years) under controlled conditions if the responsiveness of Colobanthus quitensis populations to the expected global warming, is related with their different foliar traits and photoprotective mechanisms along the latitudinal gradient. In addition, we tested if the release of the stress condition by the global warming in these cold environments increases the ecophysiological performance. For this, we describe the latitudinal pattern of net photosynthetic capacity, biomass accumulation, and number of flowers under current and future temperatures respective to each site of origin after three growing seasons. Overall, was found a clinal trend was found in the foliar traits and photoprotective mechanisms in the evaluated C. quitensis populations. On the other hand, an asymmetric response to warming was observed for southern populations in all ecophysiological traits evaluated, suggesting that low temperature is limiting the performance of C. quitensis populations. Our results suggest that under a global warming scenario, plant populations that inhabiting cold zones at high latitudes could increase in their ecophysiological performance, ... |
format |
Text |
author |
Acuña-Rodríguez, Ian S. Torres-Díaz, Cristian Hereme, Rasme Molina-Montenegro, Marco A. |
author_facet |
Acuña-Rodríguez, Ian S. Torres-Díaz, Cristian Hereme, Rasme Molina-Montenegro, Marco A. |
author_sort |
Acuña-Rodríguez, Ian S. |
title |
Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient |
title_short |
Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient |
title_full |
Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient |
title_fullStr |
Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient |
title_full_unstemmed |
Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient |
title_sort |
asymmetric responses to simulated global warming by populations of colobanthus quitensis along a latitudinal gradient |
publisher |
PeerJ Inc. |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5607920/ http://www.ncbi.nlm.nih.gov/pubmed/28948096 https://doi.org/10.7717/peerj.3718 |
geographic |
Antarctic Antarctic Peninsula South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula South Shetland Islands |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5607920/ http://www.ncbi.nlm.nih.gov/pubmed/28948096 http://dx.doi.org/10.7717/peerj.3718 |
op_rights |
©2017 Acuña-Rodríguez et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
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CC-BY |
op_doi |
https://doi.org/10.7717/peerj.3718 |
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PeerJ |
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5 |
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e3718 |
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1766231632772071424 |