Coralline algal physiology is more adversely affected by elevated temperature than reduced pH
In this study we analyzed the physiological responses of coralline algae to ocean acidification (OA) and global warming, by exposing algal thalli of three species with contrasting photobiology and growth-form to reduced pH and elevated temperature. The analysis aimed to discern between direct and co...
Published in: | Scientific Reports |
---|---|
Main Authors: | , |
Format: | Text |
Language: | English |
Published: |
Nature Publishing Group
2016
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4704045/ http://www.ncbi.nlm.nih.gov/pubmed/26740396 https://doi.org/10.1038/srep19030 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:4704045 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:4704045 2023-05-15T17:51:22+02:00 Coralline algal physiology is more adversely affected by elevated temperature than reduced pH Vásquez-Elizondo, Román Manuel Enríquez, Susana 2016-01-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4704045/ http://www.ncbi.nlm.nih.gov/pubmed/26740396 https://doi.org/10.1038/srep19030 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4704045/ http://www.ncbi.nlm.nih.gov/pubmed/26740396 http://dx.doi.org/10.1038/srep19030 Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep19030 2016-01-24T01:15:27Z In this study we analyzed the physiological responses of coralline algae to ocean acidification (OA) and global warming, by exposing algal thalli of three species with contrasting photobiology and growth-form to reduced pH and elevated temperature. The analysis aimed to discern between direct and combined effects, while elucidating the role of light and photosynthesis inhibition in this response. We demonstrate the high sensitivity of coralline algae to photodamage under elevated temperature and its severe consequences on thallus photosynthesis and calcification rates. Moderate levels of light-stress, however, were maintained under reduced pH, resulting in no impact on algal photosynthesis, although moderate adverse effects on calcification rates were still observed. Accordingly, our results support the conclusion that global warming is a stronger threat to algal performance than OA, in particular in highly illuminated habitats such as coral reefs. We provide in this study a quantitative physiological model for the estimation of the impact of thermal-stress on coralline carbonate production, useful to foresee the impact of global warming on coralline contribution to reef carbon budgets, reef cementation, coral recruitment and the maintenance of reef biodiversity. This model, however, cannot yet account for the moderate physiological impact of low pH on coralline calcification. Text Ocean acidification PubMed Central (PMC) Scientific Reports 6 1 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Article |
spellingShingle |
Article Vásquez-Elizondo, Román Manuel Enríquez, Susana Coralline algal physiology is more adversely affected by elevated temperature than reduced pH |
topic_facet |
Article |
description |
In this study we analyzed the physiological responses of coralline algae to ocean acidification (OA) and global warming, by exposing algal thalli of three species with contrasting photobiology and growth-form to reduced pH and elevated temperature. The analysis aimed to discern between direct and combined effects, while elucidating the role of light and photosynthesis inhibition in this response. We demonstrate the high sensitivity of coralline algae to photodamage under elevated temperature and its severe consequences on thallus photosynthesis and calcification rates. Moderate levels of light-stress, however, were maintained under reduced pH, resulting in no impact on algal photosynthesis, although moderate adverse effects on calcification rates were still observed. Accordingly, our results support the conclusion that global warming is a stronger threat to algal performance than OA, in particular in highly illuminated habitats such as coral reefs. We provide in this study a quantitative physiological model for the estimation of the impact of thermal-stress on coralline carbonate production, useful to foresee the impact of global warming on coralline contribution to reef carbon budgets, reef cementation, coral recruitment and the maintenance of reef biodiversity. This model, however, cannot yet account for the moderate physiological impact of low pH on coralline calcification. |
format |
Text |
author |
Vásquez-Elizondo, Román Manuel Enríquez, Susana |
author_facet |
Vásquez-Elizondo, Román Manuel Enríquez, Susana |
author_sort |
Vásquez-Elizondo, Román Manuel |
title |
Coralline algal physiology is more adversely affected by elevated temperature than reduced pH |
title_short |
Coralline algal physiology is more adversely affected by elevated temperature than reduced pH |
title_full |
Coralline algal physiology is more adversely affected by elevated temperature than reduced pH |
title_fullStr |
Coralline algal physiology is more adversely affected by elevated temperature than reduced pH |
title_full_unstemmed |
Coralline algal physiology is more adversely affected by elevated temperature than reduced pH |
title_sort |
coralline algal physiology is more adversely affected by elevated temperature than reduced ph |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4704045/ http://www.ncbi.nlm.nih.gov/pubmed/26740396 https://doi.org/10.1038/srep19030 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4704045/ http://www.ncbi.nlm.nih.gov/pubmed/26740396 http://dx.doi.org/10.1038/srep19030 |
op_rights |
Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/srep19030 |
container_title |
Scientific Reports |
container_volume |
6 |
container_issue |
1 |
_version_ |
1766158489907888128 |