Harbott, Marie; Rixen, Tim; Kuhnert, Henning; Kasemann, Simone A; Meixner, Anette; Jimenez, Carlos; González-Díaz, Patricia; Wu, Henry C: Boron and carbon isotope, and B/Ca data for a Siderastrea siderea coral core CIM_C_2-2-1/CIM_C_2-2-2 from the Gulf of Mexico [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.965916 (dataset in review)
Abstract:
Massive scleractinian corals provide unique opportunities to reconstruct past climatic and chemical changes in the ocean, where there is no additional information. Regular pH measurements and carbonate chemistry observations of the ocean are still sparse but are essential to monitor the health of our oceans. Boron isotopes and B/Ca measured from coral skeletal material can be used to reconstruct the pH and the carbonate chemistry of their environment. The results from boron isotope measurements show an acidifying Gulf of Mexico over 160 years (1845-2005) and declining δ13C. A coral core was drilled in 2005 from a living Siderastrea siderea coral close to Havana, Cuba. The coral core was cut, slabbed and X-rayed at the Leibniz Center for Tropical Marine Research, Bremen. Yearly samples were drilled over two polyps with a Proxxon drill and 1 mm diamond-coated drill bit. Boron Isotopes were measured from the yearly samples for every 3rd year (if there was enough coral skeletal material) at the MARUM facilities in Bremen with a Thermo Fisher Neptune MC-ICP-MS. δ13C was measured on monthly samples on the Thermo Fisher Finnigan MAT 251 and Finnigan Mat 253plus isotope ratio mass spectrometer also at MARUM. Trace elements-Calcium ratios where measured at ZMT on a Plasma Quant MS Elite Inductively Coupled Plasma - Mass Spectrometer with monthly samples. The age model for the dataset was interpolated using the Arand software Ager and Timer (Howell et al., 2006). Outliers were identified with the detection method provided by Chen and Liu (1993).
References:
Chen, Chung; Liu, Lon-Mu (1993): Joint Estimation of Model Parameters and Outlier Effects in Time Series. Journal of the American Statistical Association, 88(421), 284-297, https://doi.org/10.2307/2290724
Harbott, Marie; Wu, Henry C; Kuhnert, Henning; Jimenez, Carlos; González-Díaz, Patricia; Rixen, Tim (2023): A Warming Southern Gulf of Mexico: Reconstruction of Anthropogenic Environmental Changes From a Siderastrea siderea Coral on the Northern Coast of Cuba. Paleoceanography and Paleoclimatology, 38(12), e2023PA004717, https://doi.org/10.1029/2023PA004717
Howell, P; Pisias, Nicklas G; Ballance, J; Baughman, J; Ochs, L (2006): ARAND Time-Series Analysis Software. Brown University, Providence RI, https://github.com/jesstierney/arand
Project(s):
Funding:
Bundesministerium für Bildung und Forschung, Bonn (BMBF), grant/award no. 57429626: Make Our Planet Great Again-Ocean acidification crisis and global warming observations from tropical corals
Coverage:
Latitude: 23.127700 * Longitude: -82.423900
Date/Time Start: 2005-07-01T00:00:00 * Date/Time End: 2005-07-01T00:00:00
Minimum Elevation: -6.0 m * Maximum Elevation: -6.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Harbott, Marie | Calculated | Geocode |
| 2 | Age | Age | a AD/CE | Harbott, Marie | Calculated | Age model based on Harbott et al. (2023), for boron isotopes yearly samples were measured. |
| 3 | Siderastrea siderea, δ13C | S. siderea δ13C | ‰ PDB | Harbott, Marie | Mass spectrometer, Finnigan, MAT 251; Mass spectrometer, Finnigan, MAT 253 | Monthly δ13C was measured in parallel with δ18O (described in Harbott et al.(2023). For comparison reason, yearly values were calculated and every 3rd year chosen according to δ11B measurements. |
| 4 | Siderastrea siderea, Boron/Calcium ratio | S. siderea B/Ca | mmol/mol | Harbott, Marie | Inductively coupled plasma mass spectrometer (ICPMS), Analytik Jena, Plasma Quant MS Elite | Monthly samples where measured according to Harbott et al. (2023) in parallel with other trace elements/Ca. Yearly averages were calculated and ca. every 3rd year chosen following δ11B samples. |
| 5 | Siderastrea siderea, δ11B | S. siderea δ11B | ‰ PDB | Harbott, Marie | MC-ICP-MS (Thermo Scientific, Neptune) | Yearly samples were drilled from coral core, only ca. every 3rd year was chosen for measurements. |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 4 (ProcLevel4)
Size:
216 data points