Conus shell δ13C values can be used as a proxy for δ13C dissolved organic carbon in tropical waters

Conus_mus_final.jpgLauren 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