vEGU21 BG sessions in the spotlight: deep time to recent past

vEGU21 BG sessions in the spotlight: deep time to recent past

The deadline for vEGU21 abstract submission is coming closer – here is the second blogpost where we highlight a few sessions across the five BG themes, today from the General Biogeosciences sessions pool and with a focus on deep time and the recent past.

To foster a discussion of the reconstruction of ecological baselines and natural range of variability for a better understanding of the long-term resilience and adaptive capacities of ecosystems facing multiple stressors, co-conveners Rafal Nawrot, Paolo G. Albano, Stefano Dominici, Niklas Hohmann and Vanessa Julie Roden invite contributions ranging from near- and deep-time perspectives on ecological and evolutionary processes at times of rapid environmental changes from the Anthropocene biodiversity crisis to Phanerozoic mass extinction events. Conservation Paleobiology: insights from deep time to recent past (Co-organized by SSP4.3/BG1/CL1, co-sponsored by CPN) will discuss opportunities and limitations of using different types of geohistorical data to address pressing questions in conservation biology.

Picture by Dursun Acar (distributed via,

With a focus on mineral formation processes and the geochemical, biological, mineralogical, and isotopic information that can be gained from analysing mineral archives, Patrick Meister, Silvia Frisia, Dorothee Hippler and Sally Potter-McIntyre invite research from modern systems to ancient rocks, experiments to computer simulations, high-resolution microscopy and spectroscopy techniques to contribute to Mineral archives – insights from modern and ancient marine, terrestrial, and man-made systems (Co-organized by SSP3.6/BG1/GMPV5).

Changes in oxygen levels at the Earth’s surface have fundamentally shaped our planet, reducing conditions from anthropogenic activities are increasingly reported in modern aquatic environments – Oxygen on Earth from the Precambrian to the present: the environmental and ecological impacts of (de)oxygenation events (Co-organized by SSP2.2/BG1/CL4/GMPV3, co-convened by Lawrence Percival, Alexandra Rodler and Niels van Helmond) will explore long- and short-term changes in oxygen levels throughout Earth history from the Great Oxidation Event to Phanerozoic mass extinctions to modern aquatic environments with a focus on causes and biospheric impacts of de-/oxygenation events.

Picture by John Bruun (distributed via,

Conveners Yongyun Hu and Zhongshi Zhang invite contributions on Earth’s habitable history for improving our understanding of present and future changes of the Earth system. Deep-time climate simulation and reconstruction (Co-organized by CL1.14/BG1/SSP1) will investigate deep-time climate simulations and reconstructions over the tectonic time scales using models as well as reconstructions through geological, geochemical and paleontological research.

Blogpost written by Alexandra Rodler

Alexandra Rodler is a postdoctoral researcher at the Analytical, Environmental and Geo-Chemistry research group, Vrije Universiteit Brussel. She is using (isotope) geochemistry for reconstructing paleo-environmental conditions at critical intervals of climatic change and links between the rise of oxygen levels and the evolution of complex life. Currently she is using mechanistic laboratory experiments analogue with natural samples to further investigate the potential of novel paleo-redox tracers. You can also find her on twitter @asrodler.

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