title: Trait-dependent response of dung beetle populations to tropical forest conversion at local and regional scales.
abstract: Comparative analyses that link information on species' traits, environmental change, and organism response have rarely identified unambiguous trait correlates of vulnerability. We tested if species' traits could predict local-scale changes in dung beetle population response to three levels of forest conversion intensity within and across two biogeographic regions (the Neotropics and Afro-Eurasian tropics). We combined biodiversity surveys, a global molecular phylogeny, and information on three species' traits hypothesized to influence vulnerability to forest conversion to examine (1) the consistency of beetle population response across regions, (2) if species' traits could predict this response, and (3) the cross-regional consistency of trait-response relationships. Most beetle populations declined following any degree of forest conversion; these declines were strongest for Neotropical species. The relationship between traits and population trend was greatly influenced by local and biogeographic context. We discuss the ability of species' traits to explain population trends and suggest several ways to strengthen trait-response models.
authors.affiliation: Department of Ecology, Evolution and Environmental Biology, Columbia University, New York, New York 10027, USA. liznichols@gmail.com
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Nichols
authors.forename: María
authors.initials: M
authors.lastname: Uriarte
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Bunker
authors.forename: Mario E
authors.initials: ME
authors.lastname: Favila
authors.forename: Eleanor M
authors.initials: EM
authors.lastname: Slade
authors.forename: Kevina
authors.initials: K
authors.lastname: Vulinec
authors.forename: Trond
authors.initials: T
authors.lastname: Larsen
authors.forename: Fernando Z
authors.initials: FZ
authors.lastname: Vaz-de-Mello
authors.forename: Julio
authors.initials: J
authors.lastname: Louzada
authors.forename: Shahid
authors.initials: S
authors.lastname: Naeem
authors.forename: Sacha H
authors.initials: SH
authors.lastname: Spector
mesh_terms: D000818:Animals; D001517:Coleoptera / Q000145:classification / Q000235:genetics / Q000502:physiology*; D017753:Ecosystem; D010802:Phylogeny; D011157:Population Dynamics; D013045:Species Specificity; D014197:Trees; D014329:Tropical Climate