Figure 2.

Dendrograms measuring the intraspecific functional diversity (iFD) of two species, Peromyscus maniculatus and Myodes gapperi, based on two traits, δ¹⁵N and δ¹³C, at two ecological scales, where greater total branch length corresponds with greater iFD (Cianciaruso et al., 2009; Petchey & Gaston, 2002, 2006). Among‐habitat analyses (a, b) compared individuals among all three plant community types: P. maniculatus branch length was 60.31, and M. gapperi branch length was 64.91 (N = 160 randomly selected individuals of each species). Within‐habitat analyses (c, d) compared individuals within the plant community in which each species was numerically dominant: P. maniculatus (deciduous forest) branch length was 45.43, and M. gapperi (coniferous forest) branch length was 51.32 (N = 100 randomly selected individuals of each species). Dendrograms were based on trait matrices, which were converted to Euclidean distance matrices, and then clustered with an average linkage hierarchical clustering function