Getting poster data...
David Kidd (Imperial College London, Ascot, United Kingdom)The evolutionary history of freshwater organisms is closely linked to the drainage networks they inhabit. Over the last 15 million years the Goodeidae fish family diversified and dispersed with the rise of the Trans-Mexican Volcanic Belt mountain range. Barriers isolated species leading to diversification, while new connections allowed taxa to disperse. Reconstructing the history of the landscape and taxa requires synthesis of information on distribution of species, their evolutionary relationships and from the geological record. Historical biogeographic pattern in the Goodeidae is represented as a geophylogeny (a spatiotemporally referenced tree) in which nodes and branches are positioned by their topological relationship between sub-tree ranges. Range disjunctions indicate possible past barriers while extensive congruent overlap may indicate sympatric speciation. Two visual syntheses of the geophylogeny and geological evidence are presented, a 3D model within a space-time volume and an animated map which are assisting the development of consistent historical scenarios.