Reduced spore germination explains sensitivity of reef-building algae to climate change stressors
Reduced seawater pH and changes in carbonate chemistry associated with ocean acidification (OA) decrease the recruitment of crustose coralline algae (CCAcf.), an important coral-reef builder. However, it is unclear whether the observed decline in recruitment is driven by impairment of spore germinat...
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ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/371607 2024-09-15T18:28:15+00:00 Reduced spore germination explains sensitivity of reef-building algae to climate change stressors Ordonez, Alexandra Kennedy, Emma V Diaz-Pulido, Guillermo 2017 http://hdl.handle.net/10072/371607 https://doi.org/10.1371/journal.pone.0189122 English eng eng Public Library of Sciences PLoS One http://hdl.handle.net/10072/371607 1932-6203 doi:10.1371/journal.pone.0189122 http://creativecommons.org/licenses/by/4.0/ © 2017 Ordoñez et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. open access Biological oceanography Marine and estuarine ecology (incl. marine ichthyology) Journal article 2017 ftgriffithuniv https://doi.org/10.1371/journal.pone.0189122 2024-08-06T04:13:13Z Reduced seawater pH and changes in carbonate chemistry associated with ocean acidification (OA) decrease the recruitment of crustose coralline algae (CCAcf.), an important coral-reef builder. However, it is unclear whether the observed decline in recruitment is driven by impairment of spore germination, or post-settlement processes (e.g. space competition). To address this, we conducted an experiment using a dominant CCA, Porolithon cf. onkodes to test the independent and combined effects of OA, warming, and irradiance on its germination success and early development. Elevated CO2 negatively affected several processes of spore germination, including formation of the germination disc, initial growth, and germling survival. The magnitude of these effects varied depending on the levels of temperature and irradiance. For example, the combination of high CO2 and high temperature reduced formation of the germination disc, but this effect was independent of irradiance levels, while spore abnormalities increased under high CO2 and high temperature particularly in combination with low irradiance intensity. This study demonstrates that spore germination of CCA is impacted by the independent and interactive effects of OA, increasing seawater temperature and irradiance intensity. For the first time, this provides a mechanism for how the sensitivity of critical early life history processes to global change may drive declines of adult populations of key marine calcifiers. Griffith Sciences, Griffith School of Environment Full Text Article in Journal/Newspaper Ocean acidification Griffith University: Griffith Research Online PLOS ONE 12 12 e0189122 |
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Open Polar |
collection |
Griffith University: Griffith Research Online |
op_collection_id |
ftgriffithuniv |
language |
English |
topic |
Biological oceanography Marine and estuarine ecology (incl. marine ichthyology) |
spellingShingle |
Biological oceanography Marine and estuarine ecology (incl. marine ichthyology) Ordonez, Alexandra Kennedy, Emma V Diaz-Pulido, Guillermo Reduced spore germination explains sensitivity of reef-building algae to climate change stressors |
topic_facet |
Biological oceanography Marine and estuarine ecology (incl. marine ichthyology) |
description |
Reduced seawater pH and changes in carbonate chemistry associated with ocean acidification (OA) decrease the recruitment of crustose coralline algae (CCAcf.), an important coral-reef builder. However, it is unclear whether the observed decline in recruitment is driven by impairment of spore germination, or post-settlement processes (e.g. space competition). To address this, we conducted an experiment using a dominant CCA, Porolithon cf. onkodes to test the independent and combined effects of OA, warming, and irradiance on its germination success and early development. Elevated CO2 negatively affected several processes of spore germination, including formation of the germination disc, initial growth, and germling survival. The magnitude of these effects varied depending on the levels of temperature and irradiance. For example, the combination of high CO2 and high temperature reduced formation of the germination disc, but this effect was independent of irradiance levels, while spore abnormalities increased under high CO2 and high temperature particularly in combination with low irradiance intensity. This study demonstrates that spore germination of CCA is impacted by the independent and interactive effects of OA, increasing seawater temperature and irradiance intensity. For the first time, this provides a mechanism for how the sensitivity of critical early life history processes to global change may drive declines of adult populations of key marine calcifiers. Griffith Sciences, Griffith School of Environment Full Text |
format |
Article in Journal/Newspaper |
author |
Ordonez, Alexandra Kennedy, Emma V Diaz-Pulido, Guillermo |
author_facet |
Ordonez, Alexandra Kennedy, Emma V Diaz-Pulido, Guillermo |
author_sort |
Ordonez, Alexandra |
title |
Reduced spore germination explains sensitivity of reef-building algae to climate change stressors |
title_short |
Reduced spore germination explains sensitivity of reef-building algae to climate change stressors |
title_full |
Reduced spore germination explains sensitivity of reef-building algae to climate change stressors |
title_fullStr |
Reduced spore germination explains sensitivity of reef-building algae to climate change stressors |
title_full_unstemmed |
Reduced spore germination explains sensitivity of reef-building algae to climate change stressors |
title_sort |
reduced spore germination explains sensitivity of reef-building algae to climate change stressors |
publisher |
Public Library of Sciences |
publishDate |
2017 |
url |
http://hdl.handle.net/10072/371607 https://doi.org/10.1371/journal.pone.0189122 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
PLoS One http://hdl.handle.net/10072/371607 1932-6203 doi:10.1371/journal.pone.0189122 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ © 2017 Ordoñez et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. open access |
op_doi |
https://doi.org/10.1371/journal.pone.0189122 |
container_title |
PLOS ONE |
container_volume |
12 |
container_issue |
12 |
container_start_page |
e0189122 |
_version_ |
1810469580840108032 |