Tree species occurring in Amazonian wetland forests consistently show broader range sizes and niche breadths than trees in upland forests.

ABSTRACT: Generally, species with broad niches also show large range sizes. We investigated the relationship between hydrological niche breadth and geographic range size for Amazonian tree species seeking to understand the role of habitat specialization to Amazonian wetlands and upland forests on the current distribution of tree species. We obtained 571,092 valid occurrence points from GBIF and SpeciesLink to estimate the range size and the niche breadth of 76% of all known Amazonian tree species (5150 tree species). Hydrological niche breadth was measured on different unidimensional axes defined by (1) total annual precipitation; (2) precipitation seasonality; (3) actual evapotranspiration; and (4) water table depth. Geographic range sizes were estimated using alpha-hull adjustments. General linear

SUBMITTER: Luize BG 

PROVIDER: S-EPMC11045914 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature