Effect of Ocean Acidification and pH Fluctuations on the Growth and Development of Coralline Algal Recruits, and an Associated Benthic Algal Assemblage.
Coralline algae are susceptible to the changes in the seawater carbonate system associated with ocean acidification (OA). However, the coastal environments in which corallines grow are subject to large daily pH fluctuations which may affect their responses to OA. Here, we followed the growth and dev...
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ftdoajarticles:oai:doaj.org/article:858958ac39824b17b1f21d633e938275 2023-05-15T17:50:57+02:00 Effect of Ocean Acidification and pH Fluctuations on the Growth and Development of Coralline Algal Recruits, and an Associated Benthic Algal Assemblage. Michael Y Roleda Christopher E Cornwall Yuanyuan Feng Christina M McGraw Abigail M Smith Catriona L Hurd 2015-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0140394 https://doaj.org/article/858958ac39824b17b1f21d633e938275 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4607452?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0140394 https://doaj.org/article/858958ac39824b17b1f21d633e938275 PLoS ONE, Vol 10, Iss 10, p e0140394 (2015) Medicine R Science Q article 2015 ftdoajarticles https://doi.org/10.1371/journal.pone.0140394 2022-12-31T03:08:59Z Coralline algae are susceptible to the changes in the seawater carbonate system associated with ocean acidification (OA). However, the coastal environments in which corallines grow are subject to large daily pH fluctuations which may affect their responses to OA. Here, we followed the growth and development of the juvenile coralline alga Arthrocardia corymbosa, which had recruited into experimental conditions during a prior experiment, using a novel OA laboratory culture system to simulate the pH fluctuations observed within a kelp forest. Microscopic life history stages are considered more susceptible to environmental stress than adult stages; we compared the responses of newly recruited A. corymbosa to static and fluctuating seawater pH with those of their field-collected parents. Recruits were cultivated for 16 weeks under static pH 8.05 and 7.65, representing ambient and 4× preindustrial pCO2 concentrations, respectively, and two fluctuating pH treatments of daily [Formula: see text] (daytime pH = 8.45, night-time pH = 7.65) and daily [Formula: see text] (daytime pH = 8.05, night-time pH = 7.25). Positive growth rates of new recruits were recorded in all treatments, and were highest under static pH 8.05 and lowest under fluctuating pH 7.65. This pattern was similar to the adults' response, except that adults had zero growth under fluctuating pH 7.65. The % dry weight of MgCO3 in calcite of the juveniles was reduced from 10% at pH 8.05 to 8% at pH 7.65, but there was no effect of pH fluctuation. A wide range of fleshy macroalgae and at least 6 species of benthic diatoms recruited across all experimental treatments, from cryptic spores associated with the adult A. corymbosa. There was no effect of experimental treatment on the growth of the benthic diatoms. On the community level, pH-sensitive species may survive lower pH in the presence of diatoms and fleshy macroalgae, whose high metabolic activity may raise the pH of the local microhabitat. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles PLOS ONE 10 10 e0140394 |
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Medicine R Science Q Michael Y Roleda Christopher E Cornwall Yuanyuan Feng Christina M McGraw Abigail M Smith Catriona L Hurd Effect of Ocean Acidification and pH Fluctuations on the Growth and Development of Coralline Algal Recruits, and an Associated Benthic Algal Assemblage. |
topic_facet |
Medicine R Science Q |
description |
Coralline algae are susceptible to the changes in the seawater carbonate system associated with ocean acidification (OA). However, the coastal environments in which corallines grow are subject to large daily pH fluctuations which may affect their responses to OA. Here, we followed the growth and development of the juvenile coralline alga Arthrocardia corymbosa, which had recruited into experimental conditions during a prior experiment, using a novel OA laboratory culture system to simulate the pH fluctuations observed within a kelp forest. Microscopic life history stages are considered more susceptible to environmental stress than adult stages; we compared the responses of newly recruited A. corymbosa to static and fluctuating seawater pH with those of their field-collected parents. Recruits were cultivated for 16 weeks under static pH 8.05 and 7.65, representing ambient and 4× preindustrial pCO2 concentrations, respectively, and two fluctuating pH treatments of daily [Formula: see text] (daytime pH = 8.45, night-time pH = 7.65) and daily [Formula: see text] (daytime pH = 8.05, night-time pH = 7.25). Positive growth rates of new recruits were recorded in all treatments, and were highest under static pH 8.05 and lowest under fluctuating pH 7.65. This pattern was similar to the adults' response, except that adults had zero growth under fluctuating pH 7.65. The % dry weight of MgCO3 in calcite of the juveniles was reduced from 10% at pH 8.05 to 8% at pH 7.65, but there was no effect of pH fluctuation. A wide range of fleshy macroalgae and at least 6 species of benthic diatoms recruited across all experimental treatments, from cryptic spores associated with the adult A. corymbosa. There was no effect of experimental treatment on the growth of the benthic diatoms. On the community level, pH-sensitive species may survive lower pH in the presence of diatoms and fleshy macroalgae, whose high metabolic activity may raise the pH of the local microhabitat. |
format |
Article in Journal/Newspaper |
author |
Michael Y Roleda Christopher E Cornwall Yuanyuan Feng Christina M McGraw Abigail M Smith Catriona L Hurd |
author_facet |
Michael Y Roleda Christopher E Cornwall Yuanyuan Feng Christina M McGraw Abigail M Smith Catriona L Hurd |
author_sort |
Michael Y Roleda |
title |
Effect of Ocean Acidification and pH Fluctuations on the Growth and Development of Coralline Algal Recruits, and an Associated Benthic Algal Assemblage. |
title_short |
Effect of Ocean Acidification and pH Fluctuations on the Growth and Development of Coralline Algal Recruits, and an Associated Benthic Algal Assemblage. |
title_full |
Effect of Ocean Acidification and pH Fluctuations on the Growth and Development of Coralline Algal Recruits, and an Associated Benthic Algal Assemblage. |
title_fullStr |
Effect of Ocean Acidification and pH Fluctuations on the Growth and Development of Coralline Algal Recruits, and an Associated Benthic Algal Assemblage. |
title_full_unstemmed |
Effect of Ocean Acidification and pH Fluctuations on the Growth and Development of Coralline Algal Recruits, and an Associated Benthic Algal Assemblage. |
title_sort |
effect of ocean acidification and ph fluctuations on the growth and development of coralline algal recruits, and an associated benthic algal assemblage. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2015 |
url |
https://doi.org/10.1371/journal.pone.0140394 https://doaj.org/article/858958ac39824b17b1f21d633e938275 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
PLoS ONE, Vol 10, Iss 10, p e0140394 (2015) |
op_relation |
http://europepmc.org/articles/PMC4607452?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0140394 https://doaj.org/article/858958ac39824b17b1f21d633e938275 |
op_doi |
https://doi.org/10.1371/journal.pone.0140394 |
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PLOS ONE |
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10 |
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10 |
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e0140394 |
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