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Title: Low Phylogenetic Beta Diversity and Geographic Neo-endemism in Amazonian White-sand Forests
Authors: Guevara, Juan Ernesto
Damasco, Gabriel
Baraloto, Christopher
Van Antwerp Fine, Paul
Peñuela, María Cristina
Castilho, Carolina Volkmer
Vincentini, Alberto
Cárdenas, Dairón
Wittmann, Florian Karl
Targhetta, Natália
Phillips, Oliver L.
Stropp, Juliana
Amaral, Iêda Leão do
Maas, Paul J.M.
Monteagudo, Abel Lorenzo
Jiménez, E. M.
Thomas, Rachel
Brienen, Roel J.W.
Duque M, Alvaro J.
Magnusson, William Ernest
Ferreira, Cid A.
Honorio Coronado, Euridice N.
Matos, Francisca Dionízia de Almeida
Arévalo, Freddy Ramirez
Engel, Julien
Pétronelli, Pascal
Vásquez, Rodolfo V.
ter Steege, H.
Keywords: Community Structure
Comparative Advantage
Amazon Basin
Issue Date: 2016
metadata.dc.publisher.journal: Biotropica
metadata.dc.relation.ispartof: Volume 48, Número 1, Pags. 34-46
Abstract: 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.
metadata.dc.identifier.doi: 10.1111/btp.12298
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