Climate gradients, and patterns of biodiversity and biotic homogenization in urban residential yards

Fig 8. Relationships between dissimilarity indices and distance between pairs of towns (N = 66). A-C: All taxa identified to species. D-F: non-native taxa only. The Sørensen dissimilarity index (A, D), which is a presence-absence metric, is partitioned to Simpson’s dissimilarity index (a measure of species replacement; B, E) and nestedness (C, F). Regression p and R2 values are given on each graph. A Bonferroni-corrected α = 0.025 was used to adjust for using two sets of related data (total and non-native). Significant p-values are denoted by ‘�’. https://doi.org/10.1371/journal.pone.0234830.g008 Table 1. Statistical summary of distance-based linear model between climatic variables and land snail community composition. Marginal tests Variable Pseudo-F P Proportion explained (R2) Cold temperature 6.095 0.0002 0.379 Annual rainfall 3.4544 0.0175 0.257 Sequential test Temperature then rainfall 0.501 https://doi.org/10.1371/journal.pone.0234830.t001 PLOS ONE Diversity patterns of yard-dwelling snails across climate gradients PLOS ONE | https://doi.org/10.1371/journal.pone.0234830 August 28, 2020 12 / 18