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Table 2 Results from regressing ln (relative forelimb length) on maximum-, median latitude, and temperature

From: An interspecific assessment of Bergmann’s rule in 22 mammalian families

Family Predictor n Phylogentic half-life Stationary variance r 2 Optimal regression slope AICc AICc-θAICc
   168.10 38.64
Emballonuridae median latitude 34 160.10 0.004 9.693 41.09 2.45
max latitude 160.10 0.025 −18.349 40.36 1.71
  temperature   160.10 0.015 −88.544 40.70 2.05
Median latitude - temperature regression: P-value = 0.0257; Adjusted R-squared = 0.1194; estimate = −1.9120
   0.01 0.25 66.48
Molossidae median latitude 40 0.01 0.25 0.020 0.008 68.13 1.65
max latitude 0.01 0.25 0.082 0.014 65.52 −0.96
  temperature   0.01 0.25 0.048 −0.039 66.95 0.47
Median latitude - temperature regression: P-value = 1.31e–08; Adjusted R-squared = 0.5661; estimate = −2.5311
   0.73 0.43 141.60
Phyllostomidae median latitude 97 0.66 0.40 0.015 0.021 142.31 0.71
max latitude 0.86 0.45 0.031 0.033 140.81 −0.79
  temperature   0.66 0.40 0.001 −0.017 143.72 2.12
Median latitude - temperature regression: P-value = 3.73e–08; Adjusted R-squared = 0.2665; estimate = −2.1620
   0.13 0.50 93.80
Pteropodidae median latitude 52 0.13 0.45 0.068 −0.012 95.95 2.15
max latitude 0.15 0.40 0.163 −0.025 90.80 −3.00
  temperature   0.13 0.45 0.074 0.100 95.72 1.92
Median latitude - temperature regression: P-value = 3.04e–05; Adjusted R-squared = 0.2821; estimate = −2.4749
   0.10 0.22 105.53
Vespertilionidae median latitude 88 0.06 0.18 0.100 −0.004 105.80 0.27
max latitude 0.08 0.20 0.070 0.001 106.63 1.11
  temperature   0.06 0.18 10.11 0.010 105.69 0.17
Median latitude - temperature regression: P-value = <2e–16; Adjusted R-squared = 0.8224; estimate = −1.9978
  1. Phylogenetic half-life estimates indicate the level of phylogenetic dependency in models where no predictors were included. In models with predictors, half-life gives the time (in lengths of the phylogeny) necessary to lose half the influence of the ancestral trait, i.e. rate of adaptation. All phylogenies are scaled to a total length of 1. Stationary variance gives the residual variance when the model has reaches a stochastic equilibrium, and r 2 gives the amount of variance explained by the optimal regression model. Optimal regression slope is the slope for which SLOUCH has removed the effect of phylogenetic inertia (slope expected under instant adaptation). AICc values are compared to the intercept-only model (AICc-θAICc) where larger negative values indicate the most improvement from the model without predictors. Also included are results from regressing median latitude on temperature for each family