0000000000046443
AUTHOR
Géraldine Garcia
showing 3 related works from this author
Biogeochemistry at the crossroads between environment and ecology: use of oxygen isotopes to track environment preference variation in fossil crocodi…
2021
The Shungura Formation of the Lower Omo Valley (southwestern Ethiopia, dated between 3.6 Ma and ⁓1.0 Ma) recorded major environmental change occurred during the Plio-Pleistocene (aridification, landscape opening, intensification of seasonality, change in hydrography). In these conditions, the continuous persistence of several crocodilian species, throughout the time interval and different environments, is explained either by their adaptation to habitats that remain available despite global change, or by their adjustment to new habitats over time. As for extant crocodilians, we suspect that past species were able to occupy a wide range of habitats, so that the diversity of habitats they occu…
A la croisée entre environnement et écologie des crocodiliens fossiles : l’utilisation des isotopes stable de l'oxygène pour retracer l’évolution des…
2022
La fluctuation isotopique de certains isotopes stables peut être de puissants outils pour interpréter l’évolution des paléoenvironnements, à condition de comprendre la construction du signal et ses contrôles (écologie, physiologie, géodynamique…). Dans la basse vallée de l’Omo au sud-ouest de l’Ethiopie, la Formation de Shungura a enregistré des changements environnementaux majeurs entre 3,6 Ma et ⁓0,9 Ma : aridification, ouverture des milieux, changements hydrographiques ou encore intensification de la saisonnalité. Malgré ces conditions variables, plusieurs espèces de crocodiliens persistent au cours du temps, s’ajustant aux différents milieux aquatiques. En effet, comme les crocodiliens …
Palaeogenomics of Upper Palaeolithic to Neolithic European hunter-gatherers
2023
Acknowledgements: The authors thank G. Marciani and O. Jöris for comments on archaeology; C. Jeong, M. Spyrou and K. Prüfer for comments on genetics; M. O’Reilly for graphical support for Fig. 5 and Extended Data Fig. 9; the entire IT and laboratory teams at the Department of Archaeogenetics of MPI-SHH for technical assistance; M. Meyer and S. Nagel for support with single-stranded library preparation; K. Post, P. van Es, J. Glimmerveen, M. Medendorp, M. Sier, S. Dikstra, M. Dikstra, R. van Eerden, D. Duineveld and A. Hoekman for providing access to human specimens from the North Sea (The Netherlands); M. D. Garralda and A. Estalrrich for providing access to human specimens from La Riera (S…