Lithium isotopes potential in (paleo)ecology
| Type | : | COM |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 2023 |
| Lieu de publication | : | - |
| Titre de la conférence | : | EGU General Assembly 2023 |
| Lieu de la conférence | : | Vienna, Austria |
| Année de la conférence | : | 2023 |
| Date de début | : | 24/04/2023 |
| Date de fin | : | 28/04/2023 |
| Titre du proceeding | : | - |
| Editeur de presse | : | - |
| Volume | : | - |
| Fascicule | : | - |
| Pages | : | |
| Auteurs (12) | : | THIBON Fanny GOEDERT Jean SÉON Nicolas WEPPE Lucas MARTIN J AMIOT Romain ADNET Sylvain LAMBERT Olivier BUSTAMENTE P TELOUK Philippe LECUYER C VIGIER Nathalie |
| Editeurs scientifiques (0) | : | |
| DOI | : | 10.5194/egusphere-egu23-1093 |
| URL | : | https://doi.org/10.5194/egusphere-egu23-1093 |
| Abstract | : | Life evolution has been shaped by marine and continental environmental dichotomy. Particularly, the ecological history of vertebrates is divided into several aquatic and terrestrial phases. Even today, some species spend time in both marine and continental environments during their lifetime. Nevertheless, the timing and location of past ecological transitions, as well as the monitoring of current migration, are still challenging to trace. To reconstruct the aquatic environments of vertebrates (i.e. seawater vs freshwater), stable (δ13C, δ18O, δ34S) and radiogenic (87Sr/86Sr) isotope systems applied to mineralized tissues have been commonly used in the past decades1–6. Nevertheless, these methods hold some limitations as they cannot be applied universally. Here, we measured the lithium stable isotope composition of mineralized tissues (δ7Li) from extant vertebrates living in various aquatic environments (seawater, freshwater/terrestrial, and "transitional environments”). We highlight the potential of δ7Li to decipher vertebrates that live in these different environments, in contrast to δ34S and δ18O that cannot distinguish – in some cases – species living in intermediate waters from those living in seawater. Furthermore, we measured the δ7Li values of fossil apatites from extinct vertebrates and obtained values that fall within the range of aquatic environment of their extant relatives7. This new proxy may therefore profit studies in ecology, archaeology and palaeontology. |
| Mots-clés | : | - |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Thibon F, Goedert J, Séon N, Weppe L, Martin J, Amiot R, Adnet S, Lambert O, Bustamente P, Telouk P, Lecuyer C, Vigier N (2023) Lithium isotopes potential in (paleo)ecology. EGU General Assembly 2023. Vienna, Austria 24-28 April 2023 | doi: 10.5194/egusphere-egu23-1093
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