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Growth responses of branching versus massive corals to ocean warming on the Great Barrier Reef, Australia

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dc.contributor Australian Institute of Marine Science
dc.contributor Univ Queensland
dc.contributor Ctr Excellence Coral Reef Studies
dc.contributor Marine Spatial Ecol Lab
dc.contributor Australian Res Council
dc.contributor Sch Biol Sci
dc.contributor Australian Inst Marine Sci
dc.contributor Univ Padjadjaran
dc.contributor Universitas Padjadjaran
dc.contributor University of Queensland
dc.contributor Fac Fisheries & Marine Sci
dc.contributor.author Roff, George
dc.contributor.author Mumby, Peter J.
dc.contributor.author Lough, Janice M.
dc.contributor.author Razak, Tries B.
dc.date.accessioned 2020-02-09T18:32:21Z
dc.date.accessioned 2020-09-02T03:52:34Z
dc.date.available 2020-02-09T18:32:21Z
dc.date.available 2020-09-02T03:52:34Z
dc.date.issued 2020-02-25
dc.identifier.citation Razak TB, Roff G, Lough JM, Mumby PJ (2020) Growth responses of branching versus massive corals to ocean warming on the Great Barrier Reef, Australia. Science of the Total Environment 705:135908
dc.identifier.issn 0048-9697
dc.identifier.uri http://epubs.aims.gov.au/11068/15796
dc.description.abstract As oceans continue to warm under climate change, understanding the differential growth responses of corals is increasingly important. Scleractinian corals exhibit a broad range of life-history strategies, yet few studies have explored interspecific variation in long-term growth rates under a changing climate. Here we studied growth records of two coral species with different growth forms, namely branching Lsopora palifera and massive Porite.s spp. at an offshore reef (Myrmidon Reef) of the central Great Barrier Reef (GBR), Australia. Skeletal growth chronologies were constructed using a combination of X-radiographs, gamma densitometry, and trace element (Sr/Ca) analysis. General additive mixed-effect models (GAMMs) revealed that skeletal density of I. palifera declined linearly and significantly at a rate of 12% yr(-1) between 2002 and 2012. Calcification was stable between 2002 and 2009, yet declined significantly at a rate of 12% yr(-1) between 2009 and 2012 following anomalously high sea surface temperatures (SST). Skeletal density of massive Po riles exhibited a significant non-linear response over the 11-year study period (2002-2012) in that density was temporarily reduced during the 2009-2010 anomalously hot years, while linear extension and calcification showed no significant trends. Linear extension, density and calcification rates of L palifera increased to maximum growth of 26.7-26.9 degrees C, beyond which they declined. In contrast, calcification and linear extension of Porites exhibited no response to SST, but exhibited a significant linear decline in skeletal density with increasing SST. Our results reveal significant differences in coral growth patterns among coral growth forms, and highlight both the resistant nature of massive Padres and sensitivity of branching I. palifera. Future research should target a broad range of coral taxa within similar environments to provide a community-level response of ocean warming on coral reef communities. (C) 2019 Elsevier B.V. All rights reserved.
dc.description.sponsorship We thank Dr. Neal Cantin and Eric Matson of the Australian Institute of Marine Science for assistance in coral collection and sample preparation. We are grateful to Ai Nguyen at the Radiogenic Isotope Facility, The University of Queensland for assistance in trace element analysis, and Sarah Tauhid for help with the figures. This study was supported by an ARC Laureate Fellowship to PJM [FL0992179], and a Great Barrier Reef Management Park Authority Science Management Award to TBR [Ref: 9/1667(2)], and the Australian Institute of Marine Science.
dc.language English
dc.subject Environmental Sciences
dc.subject MORTALITY
dc.subject IMPACTS
dc.subject CALIBRATION
dc.subject RATES
dc.subject TEMPERATURE
dc.subject Coral growth rates
dc.subject Indo-Pacific
dc.subject PORITES CORALS
dc.subject Ocean warming
dc.subject Calcification
dc.subject SEA
dc.subject Porites
dc.subject DECLINE
dc.subject CALCIFICATION RATE
dc.subject Environmental Sciences & Ecology
dc.subject CLIMATE-CHANGE
dc.subject Isopora
dc.title Growth responses of branching versus massive corals to ocean warming on the Great Barrier Reef, Australia
dc.type journal article
dc.identifier.doi 10.1016/j.scitotenv.2019.135908
dc.identifier.wos WOS:000508129700123


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