Coral carbon isotope sensitivity to growth rate and water depth with paleo-sea level implications
| Autor: | Henry C. Wu, Braddock K. Linsley, Neil Tangri, Emilie Pauline Dassié, Robert B. Dunbar, L. D. Brenner, Gerard M. Wellington |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Stable isotope analysis Science Coral Porites General Physics and Astronomy 02 engineering and technology Article General Biochemistry Genetics and Molecular Biology Suess effect 03 medical and health sciences Palaeoceanography Paleoceanography 14. Life underwater lcsh:Science Author Correction Reef Sea level Marine biology geography Carbon dioxide in Earth's atmosphere Multidisciplinary geography.geographical_feature_category biology Ocean acidification General Chemistry Biogeochemistry 021001 nanoscience & nanotechnology biology.organism_classification 030104 developmental biology Oceanography 13. Climate action Environmental science lcsh:Q 0210 nano-technology |
| Zdroj: | Nature Communications, 10:2056 Nature Communications Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019) |
| Popis: | Although reef coral skeletal carbon isotopes (δ13C) are routinely measured, interpretation remains controversial. Here we show results of a consistent inverse relationship between coral δ13C and skeletal extension rate over the last several centuries in Porites corals at Fiji, Tonga, Rarotonga and American Samoa in the southwest Pacific. Beginning in the 1950s, this relationship breaks down as the atmospheric 13C Suess effect shifts skeletal δ13C > 1.0‰ lower. We also compiled coral δ13C from a global array of sites and find that mean coral δ13C decreases by −1.4‰ for every 5 m increase in water depth (R = 0.68, p Rising anthropogenic CO2 levels in the atmosphere are resulting in ocean acidification which may impact coral growth rates. Here, the authors quantify the relationship between water depth and δ13C compositions of South Pacific corals from the pre-industrial era, and their results should lead to improvements in the precision of sea level reconstructions using fossil corals. |
| Databáze: | OpenAIRE |
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