{"NOAAStudyId":"20348","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":"2016-07-18","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-20348.xml","doi":null,"earliestYearBP":62,"earliestYearCE":1888,"entryId":"noaa-coral-20348","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"OCE 0962260"}],"investigators":"Anagnostou, E.; Huang, K.-F.; You, C.-F.; Sikes, E.L.; Sherrell, R.M.","mostRecentYearBP":-49,"mostRecentYearCE":1999,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/20348","originalSource":null,"publication":[{"abstract":"The boron isotope ratio (d11B) of foraminifers and tropical corals has been proposed to record seawater pH. To test the veracity and practicality of this potential paleo-pH proxy in deep sea corals, samples of skeletal material from twelve archived modern Desmophyllum dianthus (D. dianthus) corals from a depth range of 274-1470 m in the Atlantic, Pacific, and Southern Oceans, ambient pH range 7.57-8.05, were analyzed for d11B. The d11B values for these corals, spanning a range from 23.56 to 27.88, are found to be related to seawater borate d11B by the linear regression: d11Bcoral=(0.76+/-0.28) d11Bborate+(14.67+/-4.19) (1 standard error (SE)). The D. dianthus d11B values are greater than those measured in tropical corals, and suggest substantial physiological modification of pH in the calcifying space by a value that is an inverse function of seawater pH. This mechanism partially compensates for the range of ocean pH and aragonite saturation at which this species grows, enhancing aragonite precipitation and suggesting an adaptation mechanism to low pH environments in intermediate and deep waters. Consistent with the findings of Trotter et al. (2011) for tropical surface corals, the data suggest an inverse correlation between the magnitude of a biologically driven pH offset recorded in the coral skeleton, and the seawater pH, described by the equation: DpH=pH recorded by coral-seawater pH=-(0.75+/-0.12) pHw+(6.88+/-0.93) (1 SE). Error analysis based on 95% confidence interval(CI) and the standard deviation of the regression residuals suggests that the uncertainty of seawater pH reconstructed from d11Bcoral is +/-0.07 to 0.12 pH units. This study demonstrates the applicability of d11B in D. dianthus to record ambient seawater pH and holds promise for reconstructing oceanic pH distribution and history using fossil corals.","author":{"name":"E. Anagnostou, K.-F. Huang, C.-F. You, E.L. Sikes, R.M. Sherrell"},"citation":"E. Anagnostou, K.-F. Huang, C.-F. You, E.L. Sikes, R.M. Sherrell. 2012. Evaluation of boron isotope ratio as a pH proxy in the deep sea coral Desmophyllum dianthus: Evidence of physiological pH adjustment. Earth and Planetary Science Letters, 349-350, 251-260. doi: 10.1016/j.epsl.2012.07.006","edition":null,"identifier":{"id":"10.1016/j.epsl.2012.07.006","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2012.07.006"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":"251-260","pubRank":"1","pubYear":2012,"reportNumber":null,"title":"Evaluation of boron isotope ratio as a pH proxy in the deep sea coral Desmophyllum dianthus: Evidence of physiological pH adjustment","type":"publication","volume":"349-350"}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"22723","geo":{"geoType":"Feature","geometry":{"coordinates":["-90","90","-180","180"],"type":"POLYGON"},"properties":{"easternmostLongitude":"180","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"90","southernmostLatitude":"-90","westernmostLongitude":"-180"}},"locationName":"Geographic 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