Biological Controls on Coral Sr/Ca and δ 18 O Reconstructions of Sea Surface Temperatures
- 1 September 1995
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 269 (5228), 1247-1249
- https://doi.org/10.1126/science.269.5228.1247
Abstract
Coral strontium/calcium ratios have been used to infer that the tropical sea surface temperature (SST) cooled by as much as 6°C during the last glacial maximum. In contrast, little or no change has been inferred from other marine-based proxy records. Experimental studies of the effect of growth rate and the magnitude of intraspecific differences indicate that biological controls on coral skeletal strontium/calcium uptake have been underestimated. These results call into question the reliability of strontium/calcium-based SST reconstructions.Keywords
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