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Oxygen Isotopes in Cellulose from an Ombrotrophic Peat Core

PI: Sanghamitra Ghosh
Institution: Florida State University
Abstract:
The present study involves the determination of oxygen isotope composition of modern and fossil celluloses from an ombrotrophic peat core sampled at Penido Vello (Northwestern Spain). The 18O/ 16O of modern cellulose data should document the present relationship between the 18O/ 16O ratios of plant cellulose, the 18O/ 16O ratios of the meteoric water used by the plants and the relative humidity of the air. The 18O/ 16O ratios of fossil cellulose from the core should provide proxy data on palaeohumidity and on the isotopic composition of palaeoprecipitation in Northwestern Spain during the last 2400 years.
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