 | IHPE UMR 5244 Université de Montpellier Place Eugène Bataillon CC 80 F-34095 Montpellier Cedex 5 Tel +33(0)4-67-14-46-06 Fax +33(0)4-67-14-46-22 email : stella.buchwald@ifremer.fr |
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GRADE : Post-Doctorante IFREMER
EQUIPE : MIA
RESEAUX SOCIAUX SCIENTIFIQUES :
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DOMAINE D’EXPERTISE :
I am a paleoecologist studying how environmental changes have shaped marine ecosystems across time, with a focus on photoautotrophs, microbes, and their interactions within marine communities. My research combines molecular and geochemical approaches, particularly ancient DNA and lipid biomarkers, to reconstruct organisms and community components that are not preserved in the traditional fossil record. For that, I integrate interdisciplinary approaches from molecular paleoecology, paleontology, sedimentology, and organic and inorganic geochemistry.
In my current project, I investigate the long-term dynamics of coral holobionts by extracting ancient DNA from stony coral cores covering the past approximately 150-200 years. By integrating genetic data from coral hosts and their symbionts with environmental proxies to reconstruct, for instance, sea surface temperature and seawater pH, I aim to determine how symbiont communities have responded to environmental change since the pre-industrial period. This research helps to establish historical baselines for coral-symbiont associations and improves our understanding of coral reef resilience under ongoing climate change.
CURSUS :
2014-2019: BSc Biology at Humboldt University Berlin, Germany
2019-2022: MSc Biological Oceanography at GEOMAR Helmholtz Centre for Ocean Research Kiel and Christian Albrechts University Kiel, Germany
2022-2025: PhD at the Department of Earth System Sciences at the University of Hamburg, Germany
DERNIERES PUBLICATIONS :
Buchwald, S. Z., Frank, A. B., Birgel, D., Senger, K., Mosociova, T., Pei, Y., et al. (2026) Reconstructing Environmental and Microbial Ecosystem Changes Across the Permian–Triassic Mass Extinction at Lusitaniadalen, Svalbard. Paleoceanography and Paleoclimatology, 41, e2025PA005321
Buchwald, S. Z., Birgel, D., Senger, K., Mosociova, T., Pei, Y., Zuchuat, V., et al. (2025) Phytoplankton blooms on the Barents Shelf, Svalbard, associated with the Permian–Triassic mass extinction. AGU Advances, 6(5), e2025AV001785
Frank, A. B., Karapunar, B., Grasby, S. E., Koşun, E., Lahajnar, N., Gómez Correa, M. A., Buchwald, S. Z., et al. (2025) Assessing the role of anoxia as a potential extinction driver in the shallow marine Neotethys during the Permian-Triassic mass extinction. Chemical Geology, 123108
Beaty, B., Foster, W. J., Zuchuat, V., Moller, S. R., Buchwald, S. Z., Brooks, H., et al. (2025) Bioturbation Shapes Marine Biogeochemical Cycling Following the End‐Permian Mass Extinction in Northern Pangea. Geobiology, 23(5), e70032
Buchwald, S. Z., Herzschuh, U., Nürnberg, D., Harms, L., & Stoof-Leichsenring, K. R. (2024) Plankton community changes during the last 124 000 years in the subarctic Bering Sea derived from sedimentary ancient DNA. The ISME Journal, 18(1), wrad006
Foster, W. J., Asatryan, G., Rauzi, S., Botting, J. P., Buchwald, S. Z., Lazarus, D. B., et al. (2023) Response of siliceous marine organisms to the Permian‐Triassic climate crisis based on new findings from central Spitsbergen, Svalbard. Paleoceanography and Paleoclimatology, 38(12), e2023PA004766