Depth and coral cover drive the distribution of a coral macroborer across two reef systems

dc.citation.articleNumbere0199462en_US
dc.citation.issueNumber6en_US
dc.citation.journalTitlePLoS ONEen_US
dc.citation.volumeNumber13en_US
dc.contributor.authorMaher, Rebecca L.en_US
dc.contributor.authorJohnston, Michelle A.en_US
dc.contributor.authorBrandt, Marilyn E.en_US
dc.contributor.authorSmith, Tyler Burtonen_US
dc.contributor.authorCorrea, Adrienne M.S.en_US
dc.date.accessioned2018-09-26T14:52:41Zen_US
dc.date.available2018-09-26T14:52:41Zen_US
dc.date.issued2018en_US
dc.description.abstractBioerosion, the removal of calcium carbonate from coral frameworks by living organisms, influences a variety of reef features, from their topographic complexity to the net balance of carbonate budgets. Little is known, however, about how macroborers, which bore into reef substrates leaving traces greater than 0.1 mm diameter, are distributed across coral reefs, particularly reef systems with high (>50%) stony coral cover or at mesophotic depths (≥30 m). Here, we present an accurate and efficient method for quantifying macroborer densities from stony coral hosts via image analysis, using the bioeroding barnacle, Lithotrya dorsalis, and its host coral, Orbicella franksi, as a case study. We found that in 2014, L. dorsalis densities varied consistently with depth and host percent cover in two Atlantic reef systems: the Flower Garden Banks (FGB, northwest Gulf of Mexico) and the U.S. Virgin Islands (USVI). Although average barnacle density was nearly 4.5 times greater overall in the FGB than in the USVI, barnacle density decreased with depth in both reef regions. Barnacle density also scaled negatively with increasing coral cover in the study areas, suggesting that barnacle populations are not strictly space-limited in their distribution and settlement opportunities. Our findings suggest that depth and host coral cover, and potentially, local factors may strongly influence the abundance of macroborers, and thus the rate of CaCO3 loss, in a given reef system. Our image analysis method for quantifying macroborers can be standardized across historical and modern reef records to better understand how borers impact host growth and reef health.en_US
dc.identifier.citationMaher, Rebecca L., Johnston, Michelle A., Brandt, Marilyn E., et al.. "Depth and coral cover drive the distribution of a coral macroborer across two reef systems." <i>PLoS ONE,</i> 13, no. 6 (2018) Public Library of Science: https://doi.org/10.1371/journal.pone.0199462.en_US
dc.identifier.digitaljournal.pone.0199462en_US
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0199462en_US
dc.identifier.urihttps://hdl.handle.net/1911/102709en_US
dc.language.isoengen_US
dc.publisherPublic Library of Scienceen_US
dc.rightsThis is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.en_US
dc.rights.urihttps://creativecommons.org/publicdomain/zero/1.0/en_US
dc.titleDepth and coral cover drive the distribution of a coral macroborer across two reef systemsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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