Fortunel Claire auteur aut IRD McFadden I. R. auteur aut IRD Valencia R. auteur aut IRD Kraft N. J. B. auteur aut IRD text journalArticle eng text/pdf born digital access Many plant species exhibit strong association with topographic habitats at local scales. However, the historical biogeographic and physiological drivers of habitat specialization are still poorly understood, and there is a need for relatively easy-to-measure predictors of species habitat niche breadth. Here, we explore whether species geographic range, climatic envelope, or intraspecific variability in leaf traits is related to the degree of habitat specialization in a hyperdiverse tropical tree community in Amazonian Ecuador. Contrary to our expectations, we find no effect of the size of species geographic ranges, the diversity of climate a species experiences across its range, or intraspecific variability in leaf traits in predicting topographic habitat association in the similar to 300 most common tropical tree species in a 25-ha tropical forest plot. In addition, there was no phylogenetic signal to habitat specialization. We conclude that species geographic range size, climatic niche breadth, and intraspecific variability in leaf traits fail to capture the habitat specialization patterns observed in this highly diverse tropical forest. specialized climatic envelope functional traits geographic range habitat association intraspecific trait variability topographic gradient tropical trees EQUATEUR AMAZONIE 076 082 021 51 3 304-310 2019 0006-3606 https://www.documentation.ird.fr/hor/fdi:010075710 10.1111/btp.12643 0006-3606 [F B010075710] https://www.documentation.ird.fr/hor/fdi:010075710 https://www.documentation.ird.fr/intranet/publi/2019/06/010075710.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2019-07-05 2025-02-24 fdi:010075710 fre