{"NOAAStudyId":"17915","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2015-01-09","dataPublisher":"NOAA","dataType":"CORALS AND SCLEROSPONGES","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/coral-sclerosponge","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-coral-17915.xml","doi":null,"earliestYearBP":7838,"earliestYearCE":-5888,"entryId":"noaa-coral-17915","funding":[{"fundingAgency":"National Science Foundation of China ","fundingGrant":"41230524"},{"fundingAgency":"GSA Research Grants","fundingGrant":null},{"fundingAgency":"Smithsonian Marine Science Network","fundingGrant":null},{"fundingAgency":"Lerner-Gray Marine Research Grant","fundingGrant":null}],"investigators":"Toth, L.T.; Aronson, R.B.; Cobb, K.M.; Cheng, H.; Edwards, R.L.; Grothe, P.R.; Sayani, H.R.","mostRecentYearBP":-60,"mostRecentYearCE":2010,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/17915","originalSource":null,"publication":[{"abstract":"Climate change is now the leading cause of coral-reef degradation and is altering the adaptive landscape of coral populations. Increasing sea temperatures and declining carbonate saturation states are inhibiting short-term rates of coral calcification, carbonate precipitation, and submarine cementation. A critical challenge to coral-reef conservation is understanding the mechanisms by which environmental perturbations scale up to influence long-term rates of reef-framework construction and ecosystem function. Here we reconstruct climatic and oceanographic variability using corals sampled from a 6750-year core from Pacific Panamá. Simultaneous reconstructions of coral paleophysiology and reef accretion allowed us to identify the climatic and biotic thresholds associated with a 2500-year hiatus in vertical accretion beginning ~4100 years ago.  Stronger upwelling, cooler sea temperatures and greater precipitation—indicators of La Niña-like conditions—were closely associated with abrupt reef-shutdown. The physiological condition of the corals deteriorated at the onset of the hiatus, corroborating theoretical predictions that the tipping points of radical ecosystem transitions should be manifested sublethally in the biotic constituents. Future climate change could cause similar threshold behaviors, leading to another shutdown in reef development in the tropical eastern Pacific.","author":{"name":"Lauren T. Toth, Richard B. Aronson, Kim M. Cobb, Hai Cheng, R. Lawrence Edwards, Pamela R. Grothe & Hussein R. Sayani"},"citation":"Lauren T. Toth, Richard B. Aronson, Kim M. Cobb, Hai Cheng, R. Lawrence Edwards, Pamela R. Grothe & Hussein R. Sayani. 2015. Climatic and biotic thresholds of coral-reef shutdown. Nature Climate Change, 5, 369-374. doi: 10.1038/nclimate2541","edition":null,"identifier":{"id":"10.1038/nclimate2541","type":"doi","url":"http://dx.doi.org/10.1038/nclimate2541"},"issue":null,"journal":"Nature Climate Change","pages":"369-374","pubRank":"1","pubYear":2015,"reportNumber":null,"title":"Climatic and biotic thresholds of coral-reef shutdown","type":"publication","volume":"5"}],"reconstruction":"Y","scienceKeywords":["Sea Surface Temperature Reconstruction"],"site":[{"NOAASiteId":"56457","geo":{"geoType":"Feature","geometry":{"coordinates":["8.631953","8.634317","-79.029478","-79.028758"],"type":"POLYGON"},"properties":{"easternmostLongitude":"-79.028758","maxElevationMeters":"-4","minElevationMeters":"-4","northernmostLatitude":"8.634317","southernmostLatitude":"8.631953","westernmostLongitude":"-79.029478"}},"locationName":"Ocean>Pacific Ocean>Eastern Pacific 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composition>element or compound ratio>boron/calcium"},{"cvAdditionalInfo":"smoothed using 200 year bin","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"smoothed","cvError":"one standard error","cvFormat":"Numeric","cvMaterial":"biological material>organism>coral>Pocillopora sp.","cvMethod":"inductively-coupled plasma atomic emission spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"millimole per mole","cvWhat":"chemical composition>element or compound ratio>boron/calcium"}]}],"dataTableName":"EP09-28 Holocene Toth15","dataTableNotes":null,"earliestYear":7838,"earliestYearBP":7838,"earliestYearCE":-5888,"mostRecentYear":0,"mostRecentYearBP":0,"mostRecentYearCE":1950,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Playa Larga Reef, Contadora Island"}],"studyCode":null,"studyName":"Modern and Holocene Stable Isotope and Trace Element Records from Pacific Panama","studyNotes":"In this study we investigated the long-term impacts of environmental variability on coral physiology and reef development in the TEP to ascertain the climatic, oceanographic, and biotic controls on ecosystem state in the past. We quantified the range of environmental conditions that corals experienced during the past ~6750 years to determine if significant changes in climate or oceanography were associated with changes in coral physiology or reef accretion. Our paleoclimatic reconstructions are based on temperature calibrations for Sr/Ca and oxygen isotopes (d18O) using modern Pocillopora damicornis colonies from Contadora. We measured bulk geochemistry from Pocillopora coral skeletons in the core to to reconstruct (i) paleotemperature and paleosalinity from Sr/Ca and d18O, (ii) oceanic paleoproductivity (upwelling) primarily from the local reservoir correction DeltaR (=Delta14C), and to a lesser extent Ba/Ca, and (iii) coral physiology from d13C and B/Ca.\n          Keywords: climate, oceanography, and upwelling","version":"1.0","xmlId":"15624"}