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...
Published in: | PeerJ |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PeerJ Inc.
2017
|
Subjects: | |
Online Access: | https://doi.org/10.7717/peerj.3718 https://doaj.org/article/50f9cbfb1a04401a907316461c3285af |
id |
ftdoajarticles:oai:doaj.org/article:50f9cbfb1a04401a907316461c3285af |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:50f9cbfb1a04401a907316461c3285af 2024-01-07T09:40:01+01:00 Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient Ian S. Acuña-Rodríguez Cristian Torres-Díaz Rasme Hereme Marco A. Molina-Montenegro 2017-09-01T00:00:00Z https://doi.org/10.7717/peerj.3718 https://doaj.org/article/50f9cbfb1a04401a907316461c3285af EN eng PeerJ Inc. https://peerj.com/articles/3718.pdf https://peerj.com/articles/3718/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.3718 2167-8359 https://doaj.org/article/50f9cbfb1a04401a907316461c3285af PeerJ, Vol 5, p e3718 (2017) Antarctica Climate change Latitudinal gradient Global warming Medicine R Biology (General) QH301-705.5 article 2017 ftdoajarticles https://doi.org/10.7717/peerj.3718 2023-12-10T01:50:57Z 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, ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula South Shetland Islands The Antarctic PeerJ 5 e3718 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctica Climate change Latitudinal gradient Global warming Medicine R Biology (General) QH301-705.5 |
spellingShingle |
Antarctica Climate change Latitudinal gradient Global warming Medicine R Biology (General) QH301-705.5 Ian S. Acuña-Rodríguez Cristian Torres-Díaz Rasme Hereme Marco A. Molina-Montenegro Asymmetric responses to simulated global warming by populations of Colobanthus quitensis along a latitudinal gradient |
topic_facet |
Antarctica Climate change Latitudinal gradient Global warming Medicine R Biology (General) QH301-705.5 |
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 |
Article in Journal/Newspaper |
author |
Ian S. Acuña-Rodríguez Cristian Torres-Díaz Rasme Hereme Marco A. Molina-Montenegro |
author_facet |
Ian S. Acuña-Rodríguez Cristian Torres-Díaz Rasme Hereme Marco A. Molina-Montenegro |
author_sort |
Ian S. Acuña-Rodríguez |
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 |
https://doi.org/10.7717/peerj.3718 https://doaj.org/article/50f9cbfb1a04401a907316461c3285af |
geographic |
Antarctic Antarctic Peninsula South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands |
op_source |
PeerJ, Vol 5, p e3718 (2017) |
op_relation |
https://peerj.com/articles/3718.pdf https://peerj.com/articles/3718/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.3718 2167-8359 https://doaj.org/article/50f9cbfb1a04401a907316461c3285af |
op_doi |
https://doi.org/10.7717/peerj.3718 |
container_title |
PeerJ |
container_volume |
5 |
container_start_page |
e3718 |
_version_ |
1787430365662543872 |