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dc.contributor.authorDiaz-Pulido, Guillermo
dc.contributor.authorBarron, Cristina
dc.date.accessioned2020-09-20T22:33:27Z
dc.date.available2020-09-20T22:33:27Z
dc.date.issued2020
dc.identifier.issn0022-3646
dc.identifier.doi10.1111/jpy.13002
dc.identifier.urihttp://hdl.handle.net/10072/397672
dc.description.abstractDissolved 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 (CO2) manipulations in outdoor flow‐through tanks, we found that seawater CO2 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 CO2 exposure times. Under light conditions, DOC release in the red macroalga Amansia was 15 times higher under high CO2 conditions compared to ambient CO2, however, CO2 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 CO2. 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 CO2 (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.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley
dc.relation.ispartofpagefrom1039
dc.relation.ispartofpageto1052
dc.relation.ispartofissue4
dc.relation.ispartofjournalJournal of Phycology
dc.relation.ispartofvolume56
dc.subject.fieldofresearchPlant biology
dc.subject.fieldofresearchFisheries sciences
dc.subject.fieldofresearchcode3108
dc.subject.fieldofresearchcode3005
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsPlant Sciences
dc.subject.keywordsMarine & Freshwater Biology
dc.subject.keywordsAmansia
dc.titleCO2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationDiaz-Pulido, G; Barron, C, CO2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae,Journal of Phycology, 2020, 56 (4), pp. 1039-1052
dcterms.dateAccepted2020-03-22
dc.date.updated2020-09-18T06:07:29Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2020 Phycological Society of America. This is the peer reviewed version of the following article: CO2 Enrichment Stimulates Dissolved Organic Carbon Release in Coral Reef Macroalgae,Journal of Phycology, 2020, 56 (4), pp. 1039-1052, which has been published in final form at https://doi.org/10.1111/jpy.13002. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-828039.html)
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gro.griffith.authorDiaz-Pulido, Guillermo


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