title: Tree diversity in relation to tree height: alternative perspectives.
abstract: Marks et al. (Ecol. Lett., 19, 2016, 743-751) show that tree diversity increases with tree height in North America and argue it reflects habitat 'suitability'. This finding conflicts with classical results, lacks controls for covariates of tree height, and can be explained alternatively using the modified Janzen-Connell effect and regional variance in habitats.
authors.affiliation: Department of Botany, University of Wisconsin-Madison, Madison, WI, 53706, USA.
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Givnish
mesh_terms: D017753:Ecosystem; D009656:North America; D014197:Trees
keywords: Favourability hypothesis; maximum tree height; moisture gradient; species packing; species richness; stratification