CO 2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae
Dissolved organic carbon ( DOC ) released by macroalgae is important in the context of coral reef degradation as it contributes to coral mortality by promoting bacterial metabolism on the coral surface. Using experimental carbon dioxide ( CO 2 ) manipulations in outdoor flow‐through tanks, we found...
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crwiley:10.1111/jpy.13002 2024-05-19T07:46:36+00:00 CO 2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae Diaz‐Pulido, Guillermo Barrón, Cristina Wernberg, T. Australian Research Council Discovery 2020 http://dx.doi.org/10.1111/jpy.13002 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjpy.13002 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jpy.13002 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jpy.13002 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Phycology volume 56, issue 4, page 1039-1052 ISSN 0022-3646 1529-8817 Plant Science Aquatic Science journal-article 2020 crwiley https://doi.org/10.1111/jpy.13002 2024-04-22T07:35:52Z Dissolved organic carbon ( DOC ) released by macroalgae is important in the context of coral reef degradation as it contributes to coral mortality by promoting bacterial metabolism on the coral surface. Using experimental carbon dioxide ( CO 2 ) manipulations in outdoor flow‐through tanks, we found that seawater CO 2 enrichment enhances daily net DOC release in a range of macroalgal species in the Great Barrier Reef (Australia). There was, however, large variability in DOC release among species, light and dark conditions, and CO 2 exposure times. Under light conditions, DOC release in the red macroalga Amansia was 15 times higher under high CO 2 conditions compared to ambient CO 2 , however, CO 2 enhancement did not affect DOC production in the other species. Results from the night incubations were more consistent as three of the four species ( Amansia, Lobophora , and Sargassum ) enhanced DOC release when enriched with CO 2 . DOC fluxes shifted from production in the 1‐d incubations to consumption in the 19‐d experiment under light conditions, suggesting an important role of bacteria in DOC balances. The results suggest that rising CO 2 (and ocean acidification) will continue to intensify space competition in favor of the macroalgae, potentially exacerbating reef degradation and ecological phase shifts from coral to macroalgal dominance. Article in Journal/Newspaper Ocean acidification Wiley Online Library Journal of Phycology 56 4 1039 1052 |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Plant Science Aquatic Science |
spellingShingle |
Plant Science Aquatic Science Diaz‐Pulido, Guillermo Barrón, Cristina CO 2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae |
topic_facet |
Plant Science Aquatic Science |
description |
Dissolved organic carbon ( DOC ) released by macroalgae is important in the context of coral reef degradation as it contributes to coral mortality by promoting bacterial metabolism on the coral surface. Using experimental carbon dioxide ( CO 2 ) manipulations in outdoor flow‐through tanks, we found that seawater CO 2 enrichment enhances daily net DOC release in a range of macroalgal species in the Great Barrier Reef (Australia). There was, however, large variability in DOC release among species, light and dark conditions, and CO 2 exposure times. Under light conditions, DOC release in the red macroalga Amansia was 15 times higher under high CO 2 conditions compared to ambient CO 2 , however, CO 2 enhancement did not affect DOC production in the other species. Results from the night incubations were more consistent as three of the four species ( Amansia, Lobophora , and Sargassum ) enhanced DOC release when enriched with CO 2 . DOC fluxes shifted from production in the 1‐d incubations to consumption in the 19‐d experiment under light conditions, suggesting an important role of bacteria in DOC balances. The results suggest that rising CO 2 (and ocean acidification) will continue to intensify space competition in favor of the macroalgae, potentially exacerbating reef degradation and ecological phase shifts from coral to macroalgal dominance. |
author2 |
Wernberg, T. Australian Research Council Discovery |
format |
Article in Journal/Newspaper |
author |
Diaz‐Pulido, Guillermo Barrón, Cristina |
author_facet |
Diaz‐Pulido, Guillermo Barrón, Cristina |
author_sort |
Diaz‐Pulido, Guillermo |
title |
CO 2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae |
title_short |
CO 2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae |
title_full |
CO 2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae |
title_fullStr |
CO 2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae |
title_full_unstemmed |
CO 2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae |
title_sort |
co 2 enrichment stimulates dissolved organic carbon release in coral reef macroalgae |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/jpy.13002 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjpy.13002 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jpy.13002 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jpy.13002 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Journal of Phycology volume 56, issue 4, page 1039-1052 ISSN 0022-3646 1529-8817 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jpy.13002 |
container_title |
Journal of Phycology |
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56 |
container_issue |
4 |
container_start_page |
1039 |
op_container_end_page |
1052 |
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1799486817925332992 |