Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses
Seagrasses are globally important coastal habitat‐forming species, yet it is unknown how seagrasses respond to the combined pressures of ocean acidification and warming of sea surface temperature. We exposed three tropical species of seagrass ( Cymodocea serrulata, Halodule uninervis , and Zostera m...
Published in: | New Phytologist |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Wiley-Blackwell Publishing Ltd
2018
|
Subjects: | |
Online Access: | https://eprints.qut.edu.au/197619/ |
id |
ftqueensland:oai:eprints.qut.edu.au:197619 |
---|---|
record_format |
openpolar |
spelling |
ftqueensland:oai:eprints.qut.edu.au:197619 2024-02-11T10:07:24+01:00 Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses Collier, Catherine Langlois, Lucas Ow, Yan Johansson, Charlotte Giammusso, Manuela Adams, Matthew O'Brien, Kate Uthicke, Sven 2018-08 https://eprints.qut.edu.au/197619/ unknown Wiley-Blackwell Publishing Ltd https://rdcu.be/b2Z1B doi:10.1111/nph.15234 Collier, Catherine, Langlois, Lucas, Ow, Yan, Johansson, Charlotte, Giammusso, Manuela, Adams, Matthew, O'Brien, Kate, & Uthicke, Sven (2018) Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses. New Phytologist, 219(3), pp. 1005-1017. https://eprints.qut.edu.au/197619/ 2018 The Authors This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au New Phytologist Contribution to Journal 2018 ftqueensland https://doi.org/10.1111/nph.15234 2024-01-15T23:23:15Z Seagrasses are globally important coastal habitat‐forming species, yet it is unknown how seagrasses respond to the combined pressures of ocean acidification and warming of sea surface temperature. We exposed three tropical species of seagrass ( Cymodocea serrulata, Halodule uninervis , and Zostera muelleri ) to increasing temperature (21, 25, 30, and 35°C) and p CO 2 (401, 1014, and 1949 μatm) for 7 wk in mesocosms using a controlled factorial design. Shoot density and leaf extension rates were recorded, and plant productivity and respiration were measured at increasing light levels (photosynthesis–irradiance curves) using oxygen optodes. Shoot density, growth, photosynthetic rates, and plant‐scale net productivity occurred at 25°C or 30°C under saturating light levels. High p CO 2 enhanced maximum net productivity for Z. muelleri , but not in other species. Z. muelleri was the most thermally tolerant as it maintained positive net production to 35°C, yet for the other species there was a sharp decline in productivity, growth, and shoot density at 35°C, which was exacerbated by p CO 2 . These results suggest that thermal stress will not be offset by ocean acidification during future extreme heat events and challenges the current hypothesis that tropical seagrass will be a ‘winner’ under future climate change conditions. Article in Journal/Newspaper Ocean acidification Queensland University of Technology: QUT ePrints New Phytologist 219 3 1005 1017 |
institution |
Open Polar |
collection |
Queensland University of Technology: QUT ePrints |
op_collection_id |
ftqueensland |
language |
unknown |
description |
Seagrasses are globally important coastal habitat‐forming species, yet it is unknown how seagrasses respond to the combined pressures of ocean acidification and warming of sea surface temperature. We exposed three tropical species of seagrass ( Cymodocea serrulata, Halodule uninervis , and Zostera muelleri ) to increasing temperature (21, 25, 30, and 35°C) and p CO 2 (401, 1014, and 1949 μatm) for 7 wk in mesocosms using a controlled factorial design. Shoot density and leaf extension rates were recorded, and plant productivity and respiration were measured at increasing light levels (photosynthesis–irradiance curves) using oxygen optodes. Shoot density, growth, photosynthetic rates, and plant‐scale net productivity occurred at 25°C or 30°C under saturating light levels. High p CO 2 enhanced maximum net productivity for Z. muelleri , but not in other species. Z. muelleri was the most thermally tolerant as it maintained positive net production to 35°C, yet for the other species there was a sharp decline in productivity, growth, and shoot density at 35°C, which was exacerbated by p CO 2 . These results suggest that thermal stress will not be offset by ocean acidification during future extreme heat events and challenges the current hypothesis that tropical seagrass will be a ‘winner’ under future climate change conditions. |
format |
Article in Journal/Newspaper |
author |
Collier, Catherine Langlois, Lucas Ow, Yan Johansson, Charlotte Giammusso, Manuela Adams, Matthew O'Brien, Kate Uthicke, Sven |
spellingShingle |
Collier, Catherine Langlois, Lucas Ow, Yan Johansson, Charlotte Giammusso, Manuela Adams, Matthew O'Brien, Kate Uthicke, Sven Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses |
author_facet |
Collier, Catherine Langlois, Lucas Ow, Yan Johansson, Charlotte Giammusso, Manuela Adams, Matthew O'Brien, Kate Uthicke, Sven |
author_sort |
Collier, Catherine |
title |
Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses |
title_short |
Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses |
title_full |
Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses |
title_fullStr |
Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses |
title_full_unstemmed |
Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses |
title_sort |
losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses |
publisher |
Wiley-Blackwell Publishing Ltd |
publishDate |
2018 |
url |
https://eprints.qut.edu.au/197619/ |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
New Phytologist |
op_relation |
https://rdcu.be/b2Z1B doi:10.1111/nph.15234 Collier, Catherine, Langlois, Lucas, Ow, Yan, Johansson, Charlotte, Giammusso, Manuela, Adams, Matthew, O'Brien, Kate, & Uthicke, Sven (2018) Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses. New Phytologist, 219(3), pp. 1005-1017. https://eprints.qut.edu.au/197619/ |
op_rights |
2018 The Authors This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
op_doi |
https://doi.org/10.1111/nph.15234 |
container_title |
New Phytologist |
container_volume |
219 |
container_issue |
3 |
container_start_page |
1005 |
op_container_end_page |
1017 |
_version_ |
1790605945964855296 |