@article{10902/32619,
year = {2024},
url = {https://hdl.handle.net/10902/32619},
abstract = {Stable isotope ratios of mollusc shell carbonates have long been used to reconstruct past environmental conditions. Although shells also contain organics, they are seldom used in (paleo)climatic studies. Here, we extract the acid-soluble and insoluble fractions of the organic matrix of modern Mytilus galloprovincialis shells from three sites along a coast?to-upper-estuary environmental gradient to measure their hydrogen (?2H) and oxygen (?18O) isotope compositions. Both organic fractions showed isotopic signatures significantly different from those of carbonate and water at each site, indicating the involvement of different fractionation mechanisms. The soluble fraction showed gradual differences in isotope values along the gradient, while the insoluble fraction showed ?2H-?18O correlation regressions subparallel to the Global and Local Meteoric Water Lines. These results showed the great potential of the shell organic matrix stable isotopes as possible (paleo)environmental proxies, stimulating further research to better define the fractionation mechanisms involved.},
organization = {This research was supported by the European Research Council under the European Union’s Horizon 2020 Research and Innovation Program (grant agreement No. 803147 RESOLUTION, awarded to S.T.). This paper is part of the PhD of D.P., which is supported by the European Research Council under the European Union’s Horizon 2020 Research and Innovation Program (grant agreement No. 803147 RESOLUTION). S.M. and I.G.Z. were supported by the projects HAR 2017-86262-P and PID 2021-124059NB-I00, funded by the Spanish Ministry of Science and Innovation. Special thanks go to all the staff in the BRAVHO laboratory, to the University of Bologna and the Department of Chemistry “Giacomo Ciamician” and the IZW Institute in Berlin for the use of all the necessary equipment to perform the stable isotope measurements. The authors also thank the Fishing Activity Service of the Cantabrian Government and the Natural Park of the Santoña Marshlands for the authorization to collect modern mussels. Finally, they would also like to thank the Universidad de Cantabria (UC) and Instituto Internacional de Investigaciones Prehistóricas de Cantabria (IIIPC) for providing support and Lucía Agudo Pérez for helping with the shell collection and post-collection processes. We would like to thank the editor and the reviewers for their careful and constructive comments and edits, which have helped to considerably improve our manuscript.},
publisher = {Springer Nature},
publisher = {Communications Chemistry, 2024, 7, 16},
title = {Stable isotopes in the shell organic matrix for (paleo)environmental reconstructions},
author = {Dragana Palecek and Milano, Stefania and Gutiérrez Zugasti, Fernando Igor and Talamo, Sahra},
}