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dc.contributor.authorWitt, Verena
dc.contributor.authorWild, Christian
dc.contributor.authorAnthony, Kenneth RN
dc.contributor.authorDiaz-Pulido, Guillermo
dc.contributor.authorUthicke, Sven
dc.date.accessioned2017-05-03T15:43:59Z
dc.date.available2017-05-03T15:43:59Z
dc.date.issued2011
dc.date.modified2012-03-20T22:42:54Z
dc.identifier.issn1462-2912
dc.identifier.doi10.1111/j.1462-2920.2011.02571.x
dc.identifier.urihttp://hdl.handle.net/10072/43681
dc.description.abstractRising anthropogenic CO2 emissions acidify the oceans, and cause changes to seawater carbon chemistry. Bacterial biofilm communities reflect environmental disturbances and may rapidly respond to ocean acidification. This study investigates community composition and activity responses to experimental ocean acidification in biofilms from the Australian Great Barrier Reef. Natural biofilms grown on glass slides were exposed for 11 d to four controlled pCO2 concentrations representing the following scenarios: A) pre-industrial (~300 ppm), B) present-day (~400 ppm), C) mid century (~560 ppm) and D) late century (~1140 ppm). Terminal restriction fragment length polymorphism and clone library analyses of 16S rRNA genes revealed CO2-correlated bacterial community shifts between treatments A, B and D. Observed bacterial community shifts were driven by decreases in the relative abundance of Alphaproteobacteria and increases of Flavobacteriales (Bacteroidetes) at increased CO2 concentrations, indicating pH sensitivity of specific bacterial groups. Elevated pCO2 (C + D) shifted biofilm algal communities and significantly increased C and N contents, yet O2 fluxes, measured using in light and dark incubations, remained unchanged. Our findings suggest that bacterial biofilm communities rapidly adapt and reorganize in response to high pCO2 to maintain activity such as oxygen production.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.publisherWiley-Blackwell
dc.publisher.placeUnited Kingdom
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom2976
dc.relation.ispartofpageto2989
dc.relation.ispartofissue11
dc.relation.ispartofjournalEnvironmental Microbiology
dc.relation.ispartofvolume13
dc.rights.retentionY
dc.subject.fieldofresearchMarine and estuarine ecology (incl. marine ichthyology)
dc.subject.fieldofresearchEvolutionary biology
dc.subject.fieldofresearchMicrobiology
dc.subject.fieldofresearchcode310305
dc.subject.fieldofresearchcode3104
dc.subject.fieldofresearchcode3107
dc.titleEffects of ocean acidification on microbial community composition of, and oxygen fluxes through, biofilms from the Great Barrier Reef
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2011
gro.hasfulltextNo Full Text
gro.griffith.authorDiaz-Pulido, Guillermo


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