TY - JOUR AU - Guevara, J.E. AU - Damasco, G. AU - Baraloto, C. AU - Fine, P.V.A. AU - Peñuela, M.C. AU - Castilho, C. AU - Vincentini, A. AU - Cárdenas, D. AU - Wittmann, F. AU - Targhetta, N. AU - Phillips, O. AU - Stropp, J. AU - Amaral, I. AU - Maas, P. AU - Monteagudo, A. AU - Jimenez, E.M. AU - Thomas, R. AU - Brienen, R. AU - Duque, A. AU - Magnusson, W. AU - Ferreira, C. AU - Honorio, E. AU - de Almeida Matos, F. AU - Arevalo, F.R. AU - Engel, J. AU - Petronelli, P. AU - Vasquez, R. AU - ter Steege, H. PY - 2016// TI - Low Phylogenetic Beta Diversity and Geographic Neo-endemism in Amazonian White-sand Forests T2 - Biotropica JO - Biotropica SP - 34 EP - 46 VL - 48 IS - 1 KW - Amazon KW - Neo-endemism KW - Phylogenetic beta diversity KW - Recent diversification KW - White sands N2 - Over the past three decades, many small-scale floristic studies of white-sand forests across the Amazon basin have been published. Nonetheless, a basin-wide description of both taxonomic and phylogenetic alpha and beta diversity at regional scales has never been achieved. We present a complete floristic analysis of white-sand forests across the Amazon basin including both taxonomic and phylogenetic diversity. We found strong regional differences in the signal of phylogenetic community structure with both overall and regional Net Relatedness Index and Nearest Taxon Index values found to be significantly positive leading to a pattern of phylogenetic clustering. Additionally, we found high taxonomic dissimilarity but low phylogenetic dissimilarity in pairwise community comparisons. These results suggest that recent diversification has played an important role in the assembly of white-sand forests causing geographic neo-endemism patterns at the regional scale. © 2016 The Association for Tropical Biology and Conservation. UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84956604749&partnerID=40&md5=59e4065c3195822e5fe2644fe3c61a2c N1 - Cited By :3; Export Date: 12 February 2016 ID - Guevara_etal2016 ER -