# Eastern Hainan Island, South China Sea Annual Growth Rate Data for 16 Porites Coral Cores from 1860-2003 AD #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: http://www.ncdc.noaa.gov/paleo/study/19923 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/su2016/su2016-qg048.txt # # Archive: Corals and Sclerosponges # # Parameter_Keywords: Physical properties #--------------------------------------- # Contribution_Date # Date: 2016-03-28 #--------------------------------------- # Title # Study_Name: Eastern Hainan Island, South China Sea Annual Growth Rate Data for 16 Porites Coral Cores from 1860-2003 AD #--------------------------------------- # Investigators # Investigators: Su, Ruixia; Lough, Janice; Sun, Donghuai #--------------------------------------- # Description and Notes # Description: 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 #--------------------------------------- # Publication # Authors: Su, Ruixia, J.M. Lough and Donghuai Sun # Published_Date_or_Year: 2016 # Published_Title: Variations in massive Porites growth rates at Hainan Island, northern South China Sea # Journal_Name: Marine Ecology Progress Series # Volume: 546 # Edition: # Issue: # Pages: 47-60 # Report Number: # DOI: 10.3354/meps11654 # Online_Resource: # Full_Citation: # Abstract: 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. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #--------------------------------------- # Site Information # Site_Name: Hainan Island # Location: South China Sea # Country: China # Northernmost_Latitude: 19.33 # Southernmost_Latitude: 19.3 # Easternmost_Longitude: 110.68 # Westernmost_Longitude: 110.67 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: QG048 Su2016 # First_Year: 1860 # Last_Year: 2003 # Time_Unit: AD # Core_Length: # Notes: #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## age_AD age,,,years AD,,,,,N ## ext-p.lut extension rate,Porites lutea,,cm/yr,annual,corals and sclerosponges,,,N ## dens-p.lut skeletal density,Porites lutea,,g cm-3,annual,corals and sclerosponges,,,N ## calcif-p.lut calcifiction,Porites lutea,,g cm-2 yr-1,annual,corals and sclerosponges,,,N #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: NA age_AD ext-p.lut skelden-p.lut calcif-p.lut 1860 0.803 1.020 0.819 1861 0.779 1.061 0.827 1862 0.620 1.221 0.756 1863 0.879 1.075 0.944 1864 0.959 1.108 1.063 1865 0.897 1.196 1.073 1866 0.886 1.151 1.020 1867 0.881 1.042 0.918 1868 0.935 1.004 0.938 1869 0.958 1.034 0.991 1870 0.848 1.123 0.953 1871 0.898 1.218 1.093 1872 0.982 1.302 1.278 1873 1.030 1.381 1.423 1874 0.901 1.437 1.296 1875 0.969 1.411 1.367 1876 1.057 1.427 1.507 1877 0.885 1.382 1.223 1878 0.878 1.295 1.137 1879 0.968 1.255 1.215 1880 0.840 1.244 1.045 1881 0.908 1.227 1.115 1882 0.920 1.139 1.047 1883 0.968 1.079 1.044 1884 0.752 1.125 0.846 1885 0.737 1.168 0.861 1886 0.687 1.215 0.835 1887 0.780 1.361 1.061 1888 0.828 1.518 1.257 1889 0.804 1.557 1.251 1890 0.779 1.575 1.227 1891 0.788 1.567 1.235 1892 0.793 1.544 1.225 1893 0.852 1.557 1.327 1894 0.761 1.489 1.133 1895 0.724 1.455 1.054 1896 0.845 1.449 1.224 1897 0.854 1.424 1.216 1898 0.920 1.347 1.239 1899 0.931 1.349 1.256 1900 0.928 1.363 1.266 1901 0.759 1.357 1.030 1902 0.906 1.379 1.250 1903 0.819 1.418 1.161 1904 0.729 1.426 1.039 1905 0.676 1.425 0.963 1906 0.718 1.433 1.028 1907 0.722 1.418 1.024 1908 0.746 1.411 1.053 1909 0.840 1.423 1.195 1910 0.865 1.465 1.268 1911 0.992 1.486 1.474 1912 0.969 1.441 1.397 1913 0.989 1.344 1.329 1914 0.773 1.328 1.027 1915 0.723 1.256 0.908 1916 0.653 1.219 0.796 1917 0.718 1.194 0.857 1918 0.941 1.181 1.112 1919 0.810 1.260 1.021 1920 0.712 1.160 0.826 1921 0.771 1.231 0.949 1922 0.774 1.261 0.976 1923 0.687 1.158 0.796 1924 0.927 1.273 1.181 1925 1.135 1.122 1.274 1926 1.090 1.346 1.467 1927 0.925 1.337 1.236 1928 0.862 1.394 1.202 1929 0.772 1.327 1.024 1930 0.814 1.416 1.154 1931 0.816 1.465 1.195 1932 0.834 1.477 1.233 1933 1.076 1.457 1.568 1934 0.927 1.392 1.290 1935 0.943 1.237 1.166 1936 1.036 1.063 1.102 1937 1.016 1.025 1.042 1938 0.957 1.085 1.039 1939 0.935 1.149 1.074 1940 0.784 1.194 0.936 1941 0.808 1.203 0.972 1942 0.718 1.155 0.830 1943 0.680 1.155 0.785 1944 0.808 1.146 0.926 1945 0.887 1.183 1.049 1946 0.892 1.252 1.117 1947 0.890 1.260 1.122 1948 0.878 1.220 1.071 1949 0.837 1.202 1.006 1950 0.746 1.203 0.898 1951 0.984 1.226 1.206 1952 1.131 1.179 1.333 1953 1.055 1.142 1.205 1954 1.089 1.164 1.267 1955 1.123 1.182 1.328 1956 1.164 1.139 1.326 1957 1.067 1.105 1.179 1958 1.104 1.082 1.194 1959 1.031 1.044 1.077 1960 1.055 1.037 1.094 1961 0.942 1.071 1.009 1962 1.008 1.092 1.101 1963 1.215 1.076 1.307 1964 0.968 1.103 1.068 1965 0.992 1.095 1.086 1966 0.944 1.091 1.029 1967 0.823 1.122 0.923 1968 0.903 1.117 1.009 1969 0.791 1.136 0.899 1970 0.885 1.226 1.085 1971 0.814 1.248 1.016 1972 1.053 1.201 1.265 1973 1.280 1.244 1.592 1974 1.267 1.225 1.552 1975 1.238 1.227 1.519 1976 1.244 1.266 1.575 1977 1.693 1.265 2.143 1978 1.448 1.212 1.754 1979 1.379 1.155 1.594 1980 1.451 1.086 1.576 1981 1.248 1.032 1.287 1982 1.526 0.994 1.517 1983 1.593 0.915 1.458 1984 1.975 0.947 1.870 1985 1.867 0.870 1.625 1986 1.562 0.924 1.443 1987 1.727 0.969 1.673 1988 1.148 1.075 1.234 1989 1.444 1.127 1.628 1990 0.976 1.116 1.089 1991 1.272 1.048 1.333 1992 1.036 1.053 1.090 1993 1.135 1.095 1.243 1994 1.208 1.059 1.279 1995 1.052 1.083 1.140 1996 1.117 1.120 1.251 1997 1.179 1.176 1.387 1998 1.334 1.172 1.563 1999 0.999 1.185 1.185 2000 0.851 1.118 0.951 2001 1.096 1.111 1.218 2002 1.072 1.124 1.205 2003 0.978 1.098 1.073