# 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-qg044.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: QG044 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 0.647 1.432 0.926 1861 0.647 1.432 0.926 1862 0.489 1.380 0.674 1863 0.594 1.363 0.810 1864 0.760 1.309 0.995 1865 0.875 1.341 1.174 1866 0.878 1.445 1.269 1867 0.798 1.555 1.241 1868 0.756 1.580 1.194 1869 0.760 1.601 1.217 1870 0.780 1.602 1.249 1871 0.789 1.542 1.217 1872 0.929 1.648 1.531 1873 0.988 1.545 1.527 1874 0.796 1.526 1.214 1875 1.152 1.500 1.727 1876 0.889 1.449 1.288 1877 0.944 1.464 1.382 1878 0.896 1.465 1.314 1879 0.782 1.465 1.146 1880 1.049 1.485 1.557 1881 0.893 1.500 1.339 1882 0.843 1.491 1.257 1883 0.860 1.439 1.237 1884 1.007 1.440 1.450 1885 1.097 1.392 1.528 1886 0.995 1.381 1.374 1887 0.687 1.395 0.958 1888 0.904 1.367 1.236 1889 0.991 1.353 1.341 1890 0.803 1.343 1.079 1891 0.898 1.326 1.190 1892 0.895 1.335 1.194 1893 0.949 1.267 1.203 1894 1.067 1.227 1.308 1895 1.330 1.136 1.511 1896 1.001 1.150 1.151 1897 1.020 1.164 1.187 1898 1.295 1.201 1.555 1899 1.288 1.269 1.635 1900 1.237 1.235 1.527 1901 1.188 1.214 1.442 1902 0.855 1.220 1.043 1903 0.934 1.227 1.146 1904 1.092 1.209 1.320 1905 1.156 1.200 1.387 1906 1.012 1.223 1.237 1907 0.836 1.271 1.063 1908 0.961 1.242 1.193 1909 0.957 1.224 1.171 1910 1.156 1.212 1.401 1911 1.502 1.141 1.713 1912 1.226 1.138 1.395 1913 1.348 1.081 1.457 1914 1.087 1.087 1.181 1915 0.914 1.153 1.054 1916 0.872 1.203 1.049 1917 1.047 1.222 1.280 1918 1.025 1.262 1.294 1919 1.033 1.242 1.284 1920 1.030 1.256 1.293 1921 1.212 1.269 1.538 1922 1.407 1.279 1.799 1923 1.089 1.289 1.404 1924 0.924 1.256 1.161 1925 0.947 1.237 1.171 1926 0.878 1.218 1.070 1927 0.875 1.227 1.074 1928 0.763 1.251 0.954 1929 0.912 1.294 1.180 1930 0.946 1.265 1.198 1931 0.806 1.369 1.104 1932 0.860 1.368 1.176 1933 0.972 1.317 1.280 1934 1.568 1.372 2.152 1935 1.412 1.341 1.893 1936 1.288 1.349 1.737 1937 0.920 1.343 1.235 1938 0.938 1.331 1.248 1939 1.135 1.346 1.527 1940 1.263 1.320 1.667 1941 1.221 1.327 1.621 1942 1.168 1.365 1.594 1943 1.484 1.351 2.004 1944 1.450 1.330 1.929 1945 1.386 1.370 1.898 1946 1.155 1.368 1.580 1947 0.967 1.337 1.293 1948 0.914 1.326 1.212 1949 0.990 1.328 1.314 1950 0.948 1.305 1.236 1951 0.946 1.172 1.108 1952 1.137 1.189 1.351 1953 0.930 1.162 1.080 1954 0.814 1.168 0.952 1955 1.123 1.136 1.276 1956 1.039 1.062 1.103 1957 1.082 1.063 1.150 1958 1.040 1.092 1.135 1959 1.106 1.031 1.140 1960 1.071 1.093 1.170 1961 1.185 1.147 1.359 1962 1.218 1.162 1.416 1963 1.260 1.183 1.490 1964 1.149 1.234 1.418 1965 1.191 1.158 1.379 1966 0.861 1.190 1.024 1967 0.870 1.165 1.013 1968 0.940 1.200 1.128 1969 0.901 1.239 1.117 1970 0.789 1.240 0.978 1971 1.086 1.269 1.378 1972 1.234 1.213 1.496 1973 1.143 1.145 1.309 1974 0.984 1.084 1.066 1975 0.921 1.055 0.971 1976 1.019 1.076 1.096 1977 1.300 1.013 1.317 1978 1.897 0.953 1.809 1979 1.930 0.982 1.895 1980 1.654 1.055 1.746 1981 1.216 1.086 1.320 1982 1.008 1.111 1.119 1983 0.938 1.096 1.028 1984 1.132 1.153 1.306 1985 1.004 1.156 1.161 1986 1.481 1.138 1.685 1987 1.393 1.120 1.559 1988 1.187 1.115 1.324 1989 1.258 1.125 1.415 1990 1.285 1.123 1.443 1991 1.312 1.159 1.520 1992 1.029 1.179 1.213 1993 1.297 1.215 1.576 1994 1.116 1.221 1.362 1995 1.037 1.203 1.248 1996 0.935 1.197 1.119 1997 1.217 1.250 1.521 1998 0.991 1.257 1.246 1999 0.959 1.247 1.196 2000 0.906 1.179 1.068 2001 0.947 1.099 1.041 2002 0.937 1.033 0.969 2003 1.124 1.053 1.183