Geographical distribution of three nuclear clusters (Q1, Q2, Q3) inferred by a Bayesian clustering analysis (STRUCTURE) after evaluating genetic diversity at nine nuSSR over 217 Jacaranda copaia in five regions in the Neotropics (Western Amazonia, Southern Amazonia, Central Amazonia, Guiana Shield, Central America). For more details, see Scotti-Saintagne et al., 2013 Journal of biogeography vol 40 pp 707-719. This work was funded by the EU-funded INCO “SEEDSOURCE” project, by the EU-funded PO-FEDER “ENERGIRAVI” program and the ANR funded Programme “BRIDGE”

The project Bridging Information on Tree Diversity in French Guiana, and a Test of Ecological Theories (BRIDGE) brings together researchers from nine different European research groups in tropical ecology, and seeks to improve our knowledge on the various dimensions of tree biological diversity in French Guiana. The project includes ten one-hectare old-growth forest tree plots across a range of geology and rainfall in French Guiana. The amount of niche conservatism across an ecologically relevant set of functional, reproductive, and defense traits have been measured in the field.