Fig. 4: Trait gradient analysis. | Nature Communications

Fig. 4: Trait gradient analysis.

From: Environmental versus phylogenetic controls on leaf nitrogen and phosphorous concentrations in vascular plants

Fig. 4

a–c Regression of log-transformed species-specific leaf N, P, and N:P versus the site-mean values (the dashed line shows the 1:1 relationship). d Distribution of slopes of species-specific regressions. e Distribution of species occurrence, quantified as the ranges of site-level mean leaf N, P, and N:P, normalized by their respective overall mean, along which species occurred. f Species variation decomposition (see “Methods” section), measuring the proportion of variations in leaf N, P, and N:P arising within vs across species. g–i Slopes of the species-specific regressions for species with the largest amount of data (N > 50). Gray lines indicate the 95% confidence interval of the slope estimate. Source data are provided as a Source Data file.

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