Format: ORAL

Serafin J. R. Streiff 1 , Francis J. Nge 1,2 , Laura Holzmeyer 1 , Delphine Tardiff 1 , Roy H. J. Erkens 3 , Thomas L. P. Couvreur 1 Annonaceae Phylogenetics Consortium 4

1 DIADE, Université Montpellier, CIRAD, IRD, Montpellier, France 2 National Herbarium of New South Wales, Botanic Gardens of Sydney, Locked Bag 6002, Mount Annan, NSW 2567, Australia 3 Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University, Maastricht, The Netherlands 4 http://www.couvreurlab.org/agpc.html

The longitudinal distribution of tropical rain forest plant diversity presents a distinct odd-man-out pattern: Neotropical and South East Asian forests are more biodiverse than their African counterparts. Understanding the contributing present and historical patterns and processes has remained challenging for decades. However, it promises to give important insights into the evolution, ecology and conservation of some of the simultaneously richest and most threatened floras of our planet. Focusing on the ubiquitous pantropical family Annonaceae with about 2450 species, we leverage a novel pipeline to curate, clean and merge herbarium specimen records from natural history collection databases, taxonomic revisions and publicly available biodiversity datasets. With these family-wide occurrences we produce species range estimates on a global scale allowing the generation of species richness maps across its distribution. We infer global and regional correlates of diversity and combine spatial data with a new species-level phylogeny of Annonaceae and modern methods of biogeographical inference to test environmental dependent diversification models using newly generated spatialized paleoclimatic simulations. Within this framework, we investigate longstanding questions on the evolutionary history and assembly of tropical rain forest floras, and get one step closer to understanding the processes leading to the odd-man-out pattern.