Table 1.
Niche properties and the expected relationship with species richness.
Fig 1.
Geographical species richness patterns of treefrogs (Mollweide projection) obtained from SDMs using the minimum volume ellipsoid algorithm (a) and IUCN distribution polygons (b); their congruence (c) and differences through latitude (d).
In panel (d), positive richness differences indicate cases where IUCN ranges yield higher richness than SDMs. By contrast, negative differences indicate cases with higher richness values derived from SDMs than IUCN. The frequency of each difference in geography is represented by the colors. Administrative country limits are reprinted from GADM version 4.1 under a CC BY license, with permission from https://gadm.org/license.html, original copyright 2018.
Fig 2.
Geographical pattern (Mollweide projection) of niche breadth and species richness.
(a) Niche breadth (NB) using MVE; (b) temperature breadth (TB); (c) precipitation breadth (PB). Panels d to f correspond to bivariate maps between amplitude properties and species richness. (d) Richness-NB; (e) Richness-TB; (f) Richness-PB. Administrative country limits are reprinted from GADM version 4.1 under a CC BY license, with permission from https://gadm.org/license.html, original copyright 2018.
Fig 3.
Geographical pattern (Mollweide projection) of marginality and species richness.
(a) Niche marginality (NM) using MVE; (b) temperature marginality (TM); (c) precipitation marginality (PM). Panes d to f correspond to bivariate maps between marginality properties and species richness. (d) Richness-NM; (e) Richness-TM; (f) Richness-PM. Administrative country limits are reprinted from GADM version 4.1 under a CC BY license, with permission from https://gadm.org/license.html, original copyright 2018.
Fig 4.
Geographical pattern (Mollweide projection) of phylogenetic position and species richness.
(a) Niche position (NP) using MVE; (b) temperature position (TP); (c) precipitation position (PP). Panes d to f correspond to bivariate maps between position properties and species richness. (d) Richness-NP; (e) Richness-TP; (f) Richness-PP. Administrative country limits are reprinted from GADM version 4.1 under a CC BY license, with permission from https://gadm.org/license.html, original copyright 2018.
Table 2.
Simultaneous autoregressive models of species richness and niche properties under both estimation approaches. All models followed a variance stabilizing weight matrix (S) using the minimum distance. NB = Niche breadth, NM = Niche marginality, NP = Niche position, TB = Temperature breadth, TM = Temperature marginality, TP = Temperature position, PB = Precipitation breadth, PM = Precipitation marginality, PP = Precipitation position.