Effects of ocean acidification on the potency of macroalgal allelopathy to a common coral
Many coral reefs have phase shifted from coral to macroalgal dominance. Ocean acidification (OA) due to elevated CO2 is hypothesised to advantage macroalgae over corals, contributing to these shifts, but the mechanisms affecting coral-macroalgal interactions under OA are unknown. Here, we show that...
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ftpubmed:oai:pubmedcentral.nih.gov:5286515 2023-05-15T17:50:29+02:00 Effects of ocean acidification on the potency of macroalgal allelopathy to a common coral Del Monaco, Carlos Hay, Mark E. Gartrell, Patrick Mumby, Peter J. Diaz-Pulido, Guillermo 2017-02-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5286515/ http://www.ncbi.nlm.nih.gov/pubmed/28145458 https://doi.org/10.1038/srep41053 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5286515/ http://www.ncbi.nlm.nih.gov/pubmed/28145458 http://dx.doi.org/10.1038/srep41053 Copyright © 2017, The Author(s) 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 2017 ftpubmed https://doi.org/10.1038/srep41053 2017-02-12T01:08:30Z Many coral reefs have phase shifted from coral to macroalgal dominance. Ocean acidification (OA) due to elevated CO2 is hypothesised to advantage macroalgae over corals, contributing to these shifts, but the mechanisms affecting coral-macroalgal interactions under OA are unknown. Here, we show that (i) three common macroalgae are more damaging to a common coral when they compete under CO2 concentrations predicted to occur in 2050 and 2100 than under present-day conditions, (ii) that two macroalgae damage corals via allelopathy, and (iii) that one macroalga is allelopathic under conditions of elevated CO2, but not at ambient levels. Lipid-soluble, surface extracts from the macroalga Canistrocarpus (=Dictyota) cervicornis were significantly more damaging to the coral Acropora intermedia growing in the field if these extracts were from thalli grown under elevated vs ambient concentrations of CO2. Extracts from the macroalgae Chlorodesmis fastigiata and Amansia glomerata were not more potent when grown under elevated CO2. Our results demonstrate increasing OA advantages seaweeds over corals, that algal allelopathy can mediate coral-algal interactions, and that OA may enhance the allelopathy of some macroalgae. Other mechanisms also affect coral-macroalgal interactions under OA, and OA further suppresses the resilience of coral reefs suffering blooms of macroalgae. Text Ocean acidification PubMed Central (PMC) Scientific Reports 7 1 |
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Article Del Monaco, Carlos Hay, Mark E. Gartrell, Patrick Mumby, Peter J. Diaz-Pulido, Guillermo Effects of ocean acidification on the potency of macroalgal allelopathy to a common coral |
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Many coral reefs have phase shifted from coral to macroalgal dominance. Ocean acidification (OA) due to elevated CO2 is hypothesised to advantage macroalgae over corals, contributing to these shifts, but the mechanisms affecting coral-macroalgal interactions under OA are unknown. Here, we show that (i) three common macroalgae are more damaging to a common coral when they compete under CO2 concentrations predicted to occur in 2050 and 2100 than under present-day conditions, (ii) that two macroalgae damage corals via allelopathy, and (iii) that one macroalga is allelopathic under conditions of elevated CO2, but not at ambient levels. Lipid-soluble, surface extracts from the macroalga Canistrocarpus (=Dictyota) cervicornis were significantly more damaging to the coral Acropora intermedia growing in the field if these extracts were from thalli grown under elevated vs ambient concentrations of CO2. Extracts from the macroalgae Chlorodesmis fastigiata and Amansia glomerata were not more potent when grown under elevated CO2. Our results demonstrate increasing OA advantages seaweeds over corals, that algal allelopathy can mediate coral-algal interactions, and that OA may enhance the allelopathy of some macroalgae. Other mechanisms also affect coral-macroalgal interactions under OA, and OA further suppresses the resilience of coral reefs suffering blooms of macroalgae. |
format |
Text |
author |
Del Monaco, Carlos Hay, Mark E. Gartrell, Patrick Mumby, Peter J. Diaz-Pulido, Guillermo |
author_facet |
Del Monaco, Carlos Hay, Mark E. Gartrell, Patrick Mumby, Peter J. Diaz-Pulido, Guillermo |
author_sort |
Del Monaco, Carlos |
title |
Effects of ocean acidification on the potency of macroalgal allelopathy to a common coral |
title_short |
Effects of ocean acidification on the potency of macroalgal allelopathy to a common coral |
title_full |
Effects of ocean acidification on the potency of macroalgal allelopathy to a common coral |
title_fullStr |
Effects of ocean acidification on the potency of macroalgal allelopathy to a common coral |
title_full_unstemmed |
Effects of ocean acidification on the potency of macroalgal allelopathy to a common coral |
title_sort |
effects of ocean acidification on the potency of macroalgal allelopathy to a common coral |
publisher |
Nature Publishing Group |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5286515/ http://www.ncbi.nlm.nih.gov/pubmed/28145458 https://doi.org/10.1038/srep41053 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5286515/ http://www.ncbi.nlm.nih.gov/pubmed/28145458 http://dx.doi.org/10.1038/srep41053 |
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Copyright © 2017, The Author(s) 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/ |
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CC-BY |
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https://doi.org/10.1038/srep41053 |
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Scientific Reports |
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