doi: 10.1126/science.269.5228.1247.
Biological Controls on Coral Sr/Ca and dgr18O Reconstructions of Sea Surface Temperatures
- PMID: 17732111
- DOI: 10.1126/science.269.5228.1247
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Biological Controls on Coral Sr/Ca and dgr18O Reconstructions of Sea Surface Temperatures
Science.
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Abstract
Coral strontium/calcium ratios have been used to infer that the tropical sea surface temperature (SST) cooled by as much as 6 degrees 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.
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