Assessment of a Sr isotope vital effect (87Sr/86Sr) in marine taxa from Lee Stocking Island, Bahamas

Data from Lee Stocking Island, Bahamas, confirms the hypothesis that there are no vital effects with the uptake of Sr isotopes (^sup 87^Sr/^sup 86^Sr) at the present mass spectrometer resolution [±2×10^sup -5^ (2σ)]. Our data set contains analyses of 40 samples derived from 37 different calcareous taxa inhabiting a wide range of carbonate subenvironments (i.e., reefal, intertidal, supratidal, mangrove). The mean value of our analyses was 0.709179 with a standard deviation of 2.4×10^sup -5^ (2σ) which was very close to the long-term uncertainty of the strontium isotope methodology [±2.0×10^sup -5^ (2σ)] and to the widely reported ^sup 87^Sr/^sup 86^Sr value of seawater, which clusters around 0.709175.[PUBLICATION ABSTRACT]