noaa-coral-19923 Eastern Hainan Island, South China Sea Annual Growth Rate Data for 16 Porites Coral Cores from 1860-2003 AD Su, R.; Lough, J.M.; Sun, D. Eastern Hainan Island, South China Sea Annual Growth Rate Data for 16 Porites Coral Cores from 1860-2003 AD 2016-03-28 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19923 Investigator R. Su Investigator J.M. Lough Investigator D. Sun earth science paleoclimate corals and sclerosponges calcification rate,Porites lutea,null,gram per square centimeter per year,null,corals and sclerosponges,raw,x-ray densitometry,N,null earth science paleoclimate corals and sclerosponges calcification rate,Porites lobata,null,gram per square centimeter per year,null,corals and sclerosponges,raw,x-ray densitometry,N,null earth science paleoclimate corals and sclerosponges age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null earth science paleoclimate corals and sclerosponges extension rate,Porites lutea,null,centimeter per year,null,corals and sclerosponges,raw,x-radiography,N,null earth science paleoclimate corals and sclerosponges density,Porites lutea,null,gram per cubic centimeter,null,corals and sclerosponges,raw,x-ray densitometry,N,null earth science paleoclimate corals and sclerosponges density,Porites lobata,null,gram per cubic centimeter,null,corals and sclerosponges,raw,x-ray densitometry,N,null earth science paleoclimate corals and sclerosponges extension rate,Porites lobata,null,centimeter per year,null,corals and sclerosponges,raw,x-radiography,N,null earth science paleoclimate corals and sclerosponges physical properties geoscientificInformation 1860 AD 2003 AD 90 cal yr BP -53 cal yr BP Complete 19.3 19.33 110.67 110.68 Ocean Pacific Ocean Western Pacific Ocean South China Sea Hainan Island>LATITUDE 19.315>LONGITUDE 110.675 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Su, Ruixia, J.M. Lough and Donghuai Sun 2016 Marine Ecology Progress Series 546 47-60 10.3354/meps11654

Annual density banding in massive coral skeletons provides a means to retrospectively monitor coral growth rates. In this study, we present new records of annual skeletal density, linear extension and calcification rates for 16 Porites spp. coral cores from northeastern Hainan Island, northern South China Sea. Based on average growth characteristics from 1948 to 2001, P.lobata had significantly higher linear extension and calcification rates and lower density than P.lutea. We also found evidence of an age-related effect on growth, whereby skeletal density decreased and linear extension rate increased through time. This did not affect calcification rates. The average calcification rate for northeastern Hainan Island Porites matches that expected for Indo-Pacific Porites based on average sea surface temperatures (SST) from 1961 to 1990. After removal of the ontogenetic trends, average 16-core calcification rates from 1923 to 2002 showed an initial increase, matching observed SST warming. After 1982, however, calcification significantly decreased, although SST did not continue to warm. We suggest that the lower calcification rates from 1983 to 2002 may be a response to eutrophication of coastal waters as a result of extensive coastal aquaculture development. In summary, our new growth records from Hainan Island show that, despite species differences, calcification rates were typical of Indo-Pacific Porites but that in the latter half of the 20th Century, calcification rates have likely responded to both globally and locally induced changes in the marine climate experienced by the corals. STUDY NOTES: Annual growth data for 16 coral cores from Oucan (ID=OC) and Qingge (ID=QG) fringing reef. Cores also identified as either Porites lutea and Porites lobata. Growth rates determined from X-ray densitometry. Provided Keywords: Porites, calcification, growth rates, South China Sea, Hainan Island, temperature, aquaculture

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