Figure 2
From: Trait choice profoundly affected the ecological conclusions drawn from functional diversity measures
The closeness of associations between species richness and functional diversity in the Loess Plateau data set. The four functional diversity indices, FAD (a), FD (b), Q (c), and FDis (d), were calculated using different numbers and identities of traits. Each line in the plots donates the closeness of associations between species richness and one functional diversity index calculated using one subset of traits, which were determined using one of the methods, PC (principal components), RM (RM coefficient), GCD (Yanai’s Generalized Coefficient of Determination), RV (RV coefficient), and HL (the highest loads). One point in each plot represents the closeness of the association calculated using one trait combination in the analysis of the complete search. The points with different colors and symbol represent different levels of P values. Filled and blue circles, P ≤ 1.0 × 10−20; filled and green triangles, 1.0 × 10−20 < P ≤ 1.0 × 10−11; filled and red squares, 1.0 × 10−11 < P ≤ 1.0 × 10−5; open and purple circles, 1.0 × 10−5 < P ≤ 0.01; open and brown triangles, 0.01 < P ≤ 0.05; open and orange squares, P > 0.05.
