Lauren Graniero, student at Texas A&M and STRI short term Fellow, just published another paper that helps us make sense of the significance of stable isotope ratios in skeletal material.
The paper’s ‘highlights’:
- First study to compare δ13C time-series data for shells and seawater in a tropical setting
- Seawater δ13C dissolved organic carbon (DIC) decreases during the rainy season and increases during the dry season
- Conus shells record seasonal changes in δ13CDIC associated with upwelling and freshwater input
- δ13C of beach-collected Conus shells can provide record of historical climate and upwelling.
The paper is published here and you can get the pdf here
O'Dea Lab 
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