ID: 613 / 209

Category: Symposia

Track: Pending

Proposed Symposium Title: PERSPECTIVES ON PLANT BIOME TURNOVER IN AN ERA OF MASSIVE DATA AND NEW METHODOLOGICAL DEVELOPMENTS

Abstract: Over the past 65 million years, the Earth's system has undergone dramatic environmental changes, including major climatic oscillations that caused the transition from a greenhouse world to icehouse conditions, and major tectonic rearrangements that led to the opening and closing of land connections and migration corridors. These environmental changes have profoundly altered the distribution and composition of regional biotas. In addition to the speciation, extinction, adaptation and migration of individual clades, these planetary-scale changes have caused the disappearance of ancient plant formations, such as the boreotropical belt and the Madre-Tethyan vegetation in the northern hemisphere, or the emergence of new ones, such as steppes and mountain-adapted floras in the north, or dry tropical formations around the equator. Our understanding of the origin, evolution, maintenance and turnover of major plant biomes is based on the fossil record and molecular evidence from representative clades. New model developments, coupled with the increasing availability of molecular phylogenies and genomic data, are now allowing us to improve our understanding of the timescales, processes and drivers that have mediated the turnover of major plant assemblages on Earth. During this symposium, we aim to discuss cutting-edge research including, but not limited to, new model developments, biome delimitations, integration of fossil and molecular phylogenies, simulation studies, and analyses of large and cross-taxonomic molecular datasets. The symposium will provide an excellent opportunity for scientists to share their latest findings, identify knowledge gaps, and explore future research directions.

Speaker 1: Richard Ree Field Museum of Natural History 1400 S Lake Shore Dr, Chicago, IL 60605, US. rree@fieldmuseum.org Biome-bioregion alignment and the assembly of the Hengduan Mountains flora

Speaker 2: Andrea S. Meseguer Real Jardín Botánico, CSIC, Department of Plant Biodiversity and Conservation Plaza de Murillo 2, 28014 Madrid, SPAIN a.meseguer@csic.es Fossils, phylogenies, and paleoclimatic data to unveil the demise and turnover of the ancient (boreo) tropical flora.

Speaker 3: Daniele Silvestro University of Fribourg PER 05 - 0.349A, Switzerland silvestro.daniele@gmail.com Reconstructing paleo-environments and paleo-diversity using Bayesian deep learning.

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Justification: The proposed symposium integrates several IBC topics, including (3) Biogeography, (10) Ecology and plant communities, (19) Macroevolution, as well as (20) Paleobotany and (22) Phylogenetics and Phylogenomics. The molecular revolution and new model developments have dramatically advanced our understanding of biome evolution over the past 10 years. This symposium will synthesize new analytical advances and set the stage for future research. This symposium includes speakers of diverse genders and ethnicities: (e.g., invited Korean-American male, European women, European male).