# Havannah Island, Great Barrier Reef, Bimonthly Coral Linear Extension, Trace Elements and Boron Isotopes from 1989-2009 CE #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # 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: https://www.ncdc.noaa.gov/paleo/study/22670 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/great_barrier/d-olivo2017/d-olivo2017-hav09_3-a.txt # Description: NOAA location of this template # # Archive: Corals and Sclerosponges # # Dataset DOI: # # Parameter_Keywords: chemistry #--------------------------------------- # Contribution_Date # Date: 2017-09-18 #--------------------------------------- # File_Last_Modified_Date # Date: 2017-09-18 #--------------------------------------- # Title # Study_Name: Havannah Island, Great Barrier Reef, Bimonthly Coral Linear Extension, Trace Elements and Boron Isotopes from 1989-2009 CE #--------------------------------------- # Investigators # Investigators: D'Olivo, Juan Pablo; McCulloch, Malcolm #--------------------------------------- # Description_Notes_and_Keywords # Description: Trace element (Mg/Ca, Sr/Ca, U/Ca, Li/Mg, B/Ca and Li/Ca), boron isotopes and linear extension sampled along four sample paths. # Provided Keywords: Thermal stress, calcifying fluid, biomineralization #--------------------------------------- # Publication # Authors: D’Olivo, J.P. and M.T. McCulloch # Published_Date_or_Year: 2017 # Published_Title: Response of coral calcification and calcifying fluid composition to thermally induced bleaching stress # Journal_Name: Scientific reports # Volume: 7 # Edition: # Issue: # Pages: # Report Number: # DOI: 10.1038/s41598-017-02306-x # Online_Resource: # Full_Citation: # Abstract: Severe, global-scale thermal stress events like those of 1998 and 2016, are becoming more frequent and intense, potentially compromising the future of coral reefs. Here we report the effects of the 1998 bleaching event on coral calcification as well as the composition of the calcifying fluid (cf) from which corals precipitate their calcium carbonate skeletons. This was investigated by using the Sr/Ca, Li/Mg (temperature), and boron isotopes (d11B) and B/Ca (carbonate chemistry) proxies in a Porites sp. coral. Following the summer of 1998 the coral exhibited a prolonged period (~18 months) of reduced calcification (~60%) and a breakdown in the seasonality of the geochemical proxies. However, the maintenance of elevated dissolved inorganic carbon (DICcf; >×2 seawater) and pHcf (>8.3 compared to seawater ~8.0) even during severe stress of 1998 indicate that a minimum threshold of high aragonite saturation state (Ocf) of ~14 (~×4 seawater), is an essential pre-requisite for coral calcification. However, despite maintaining elevated levels of Ocf even under severe stress, coral growth is still impaired. We attribute this to reductions in either the effective active volume of calcification and/or DICcf as bleaching compromises the photosynthetically fixed carbon pool available to the coral. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Australian Research Council # Grant: FL120100049 #--------------------------------------- # Site Information # Site_Name: Havannah Island HAV09_3 # Location: Great Barrier Reef # Country: Australia # Northernmost_Latitude: -18.836043 # Southernmost_Latitude: -18.836043 # Easternmost_Longitude: 146.525887 # Westernmost_Longitude: 146.525887 # Elevation: -4 #--------------------------------------- # Data_Collection # Collection_Name: HAV09_3 path-A D'Olivo2017 # First_Year: 1989 # Last_Year: 2001 # Time_Unit: AD # Core_Length: # Notes: Data was collected along fourth different sample paths. #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab- 10 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data,additional info ## age_CE age,,,years CE,,,,,, ## LinExt extension rate,Porites sp.,,cm/yr,,corals and sclerosponges,interpolated,elemental analysis,N,interpolated linearly to bimonthly time steps ## d11B delta 11B,Porites sp.,,per mil SRM 951,,corals and sclerosponges,interpolated,thermal ionization mass spectrometry,N,interpolated linearly to bimonthly time steps #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: -999 Year LinExt d11B 1989.50 1.1999952 25.14 1989.83 1.50428394 25.185 1990.17 1.079161092 24.4685 1990.50 0.859494114 23.93667 1990.83 1.093681601 23.84083 1991.17 1.391509004 24.19578 1991.50 1.866515852 24.93472 1991.83 0.8 25.43 1992.17 0.83383354 25.1675 1992.50 1.070667069 24.41 1992.83 2.025005616 -999 1993.17 1.398743339 24.71583 1993.50 0.779749944 25.47167 1993.83 0.892000841 25.05333 1994.17 1.185001789 24.83 1994.50 1.887002096 24.49501 1994.83 1.109946855 24.09687 1995.17 0.722609743 24.535 1995.50 -999 24.98651 1997.67 1.825673146 25.11343 1997.83 0.792769653 24.11475 1998.00 0.442511561 23.91983 1998.17 0.570556411 24.46955 1998.33 0.698601262 25.01928 1998.50 0.737772551 25.56289 1998.67 0.570551358 26.05168 1998.83 0.576837128 25.70285 1999.00 0.656227923 25.01982 1999.17 1.002967131 24.89152 1999.33 1.405263513 25.41427 1999.50 0.601745084 25.16622 1999.67 1.247680766 25.12319 1999.83 1.648974503 25.00194 2000.00 1.14000204 24.61333 2000.17 1.126830904 24.38013 2000.33 1.701758676 24.4564 2000.50 0.984150547 24.9856 2000.67 1.220758489 25.40184 2000.83 0.909397745 24.88215 2001.00 0.804 24.636 2001.17 -999 24.58047