# 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-qg047.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: QG047 Su2016 # First_Year: 1889 # 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.lob extension rate,Porites lobata,,cm/yr,annual,corals and sclerosponges,,,N ## dens-p.lob skeletal density,Porites lobata,,g cm-3,annual,corals and sclerosponges,,,N ## calcif-p.lob calcifiction,Porites lobata,,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.lob skelden-p.lob calcif-p.lob 1889 1.156 1.392 1.609 1890 1.156 1.392 1.609 1891 1.181 1.266 1.496 1892 1.115 1.267 1.412 1893 1.190 1.345 1.600 1894 1.148 1.417 1.626 1895 1.159 1.448 1.679 1896 1.055 1.375 1.451 1897 1.128 1.341 1.512 1898 1.033 1.311 1.355 1899 1.069 1.260 1.347 1900 0.987 1.211 1.195 1901 1.168 1.195 1.397 1902 1.288 1.214 1.564 1903 1.255 1.231 1.546 1904 1.213 1.196 1.450 1905 1.349 1.225 1.653 1906 1.406 1.170 1.644 1907 1.448 1.165 1.686 1908 1.375 1.189 1.634 1909 1.111 1.192 1.324 1910 1.029 1.222 1.258 1911 1.036 1.238 1.283 1912 0.971 1.251 1.214 1913 0.976 1.165 1.137 1914 1.061 1.170 1.242 1915 1.239 1.077 1.333 1916 0.948 1.118 1.060 1917 1.104 1.149 1.268 1918 1.186 1.141 1.353 1919 1.533 1.157 1.773 1920 1.442 1.173 1.691 1921 1.340 1.160 1.554 1922 1.399 1.147 1.605 1923 1.375 1.170 1.609 1924 1.558 1.139 1.775 1925 1.344 1.146 1.541 1926 1.263 1.155 1.459 1927 1.369 1.136 1.555 1928 1.312 1.161 1.524 1929 1.335 1.099 1.467 1930 1.293 1.159 1.499 1931 1.587 1.104 1.752 1932 1.606 1.168 1.875 1933 1.334 1.184 1.578 1934 1.420 1.134 1.610 1935 1.406 1.098 1.544 1936 1.448 1.095 1.585 1937 1.453 1.076 1.563 1938 1.348 1.087 1.466 1939 1.262 1.103 1.392 1940 1.463 1.075 1.572 1941 1.515 1.156 1.751 1942 1.462 1.150 1.681 1943 1.425 1.165 1.659 1944 1.330 1.180 1.569 1945 1.213 1.179 1.430 1946 1.557 1.139 1.773 1947 1.400 1.109 1.553 1948 1.158 1.043 1.207 1949 1.230 1.067 1.312 1950 1.174 1.072 1.258 1951 1.276 1.029 1.313 1952 1.282 1.051 1.347 1953 1.364 1.059 1.443 1954 1.211 1.036 1.254 1955 1.354 1.049 1.421 1956 1.349 1.020 1.375 1957 1.615 1.019 1.646 1958 1.489 1.053 1.569 1959 1.492 1.090 1.627 1960 1.747 1.071 1.870 1961 1.613 1.079 1.740 1962 1.553 1.028 1.597 1963 1.587 1.046 1.660 1964 1.436 1.038 1.490 1965 1.557 1.041 1.621 1966 1.445 1.049 1.516 1967 1.247 1.032 1.287 1968 1.384 1.032 1.429 1969 1.259 1.041 1.311 1970 1.145 1.070 1.225 1971 1.268 1.071 1.358 1972 1.521 1.079 1.640 1973 1.500 1.044 1.567 1974 1.414 1.033 1.460 1975 1.296 1.041 1.349 1976 1.527 1.033 1.577 1977 1.460 1.031 1.504 1978 1.478 1.011 1.495 1979 1.483 1.003 1.488 1980 1.555 1.010 1.571 1981 1.719 0.985 1.693 1982 1.730 0.949 1.642 1983 1.629 0.927 1.510 1984 1.657 0.935 1.549 1985 1.612 0.934 1.505 1986 1.538 0.905 1.392 1987 1.788 0.955 1.707 1988 1.541 0.927 1.429 1989 1.833 0.952 1.745 1990 1.816 0.992 1.802 1991 1.715 0.982 1.684 1992 1.450 0.963 1.397 1993 1.481 0.929 1.376 1994 1.698 0.925 1.570 1995 1.356 0.925 1.255 1996 1.516 0.913 1.385 1997 1.874 0.980 1.837 1998 1.644 0.965 1.587 1999 1.481 0.932 1.380 2000 1.480 0.966 1.430 2001 1.652 0.938 1.549 2002 1.559 0.952 1.484 2003 1.650 0.954 1.575