Biodiversity of coral reef cryptobiota shuffles but does not decline under the combined stressors of ocean warming and acidification

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dc.contributor.authorBahr, Keisha D.
dc.contributor.authorTimmers, Molly A.
dc.contributor.authorJury, Christopher P.
dc.contributor.authorVicente, Jan
dc.contributor.authorWebb, Maryann K.
dc.contributor.authorToonen, Robert J.
dc.creator.orcidhttps://orcid.org/0000-0002-8092-833Xen_US
dc.creator.orcidhttps://orcid.org/0000-0003-4741-0261en_US
dc.creator.orcidhttps://orcid.org/0000-0003-0545-8443en_US
dc.creator.orcidhttps://orcid.org/0000-0001-6339-4340en_US
dc.creator.orcidhttps://orcid.org/0000-0002-8092-833X
dc.creator.orcidhttps://orcid.org/0000-0003-4741-0261
dc.creator.orcidhttps://orcid.org/0000-0003-0545-8443
dc.creator.orcidhttps://orcid.org/0000-0001-6339-4340
dc.creator.orcidhttps://orcid.org/0000-0002-8092-833X
dc.creator.orcidhttps://orcid.org/0000-0003-4741-0261
dc.creator.orcidhttps://orcid.org/0000-0003-0545-8443
dc.creator.orcidhttps://orcid.org/0000-0001-6339-4340https://orcid.org/0000-0002-8092-833X
dc.creator.orcidhttps://orcid.org/0000-0003-4741-0261
dc.creator.orcidhttps://orcid.org/0000-0003-0545-8443
dc.creator.orcidhttps://orcid.org/0000-0001-6339-4340
dc.date.accessioned2021-11-08T20:37:35Z
dc.date.available2021-11-08T20:37:35Z
dc.date.issued2021-08-09
dc.description.abstractOcean-warming and acidification are predicted to reduce coral reef biodiversity, but the combined effects of these stressors on overall biodiversity are largely unmeasured. Here, we examined the individual and combined effects of elevated temperature (+2 °C) and reduced pH (−0.2 units) on the biodiversity of coral reef communities that developed on standardized sampling units over a 2-y mesocosm experiment. Biodiversity and species composition were measured using amplicon sequencing libraries targeting the cytochrome oxidase I (COI) barcoding gene. Ocean-warming significantly increased species richness relative to present-day control conditions, whereas acidification significantly reduced richness. Contrary to expectations, species richness in the combined future ocean treatment with both warming and acidification was not significantly different from the present-day control treatment. Rather than the predicted collapse of biodiversity under the dual stressors, we find significant changes in the relative abundance but not in the occurrence of species, resulting in a shuffling of coral reef community structure among the highly species-rich cryptobenthic community. The ultimate outcome of altered community structure for coral reef ecosystems will depend on species-specific ecological functions and community interactions. Given that most species on coral reefs are members of the understudied cryptobenthos, holistic research on reef communities is needed to accurately predict diversity–function relationships and ecosystem responses to future climate conditions.en_US
dc.identifier.citationTimmers, M.A., Jury, C.P., Vicente, J., Bahr, K.D., Webb, M.K. and Toonen, R.J., 2021. Biodiversity of coral reef cryptobiota shuffles but does not decline under the combined stressors of ocean warming and acidification. Proceedings of the National Academy of Sciences, 118(39).en_US
dc.identifier.doihttps://doi.org/10.1073/pnas.2103275118
dc.identifier.urihttps://hdl.handle.net/1969.6/89936
dc.language.isoen_USen_US
dc.publisherPNASen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectcryptobenthicen_US
dc.subjectarmsen_US
dc.subjectcoi metabarcodingen_US
dc.subjectclimate changeen_US
dc.subjectmesocosmen_US
dc.titleBiodiversity of coral reef cryptobiota shuffles but does not decline under the combined stressors of ocean warming and acidificationen_US
dc.typeArticleen_US

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