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Table 3 Rankings and relative support for models that quantify the role of microrefuges in pika occurrence

From: Microrefuges and the occurrence of thermal specialists: implications for wildlife persistence amidst changing temperatures

Model

K

AICc

Δ AICc

W j

E j

Subsurface microrefuge (magnitude)

2

45.65

0.00

0.81

n/a

Interstitial temperature (variation)

2

50.52

4.87

0.07

11.60

Subsurface microrefuge (variation)

2

52.55

6.90

0.03

27.00

Surface temperature (magnitude)

3

52.56

6.91

0.03

27.00

Interstitial temperature (magnitude)

2

52.82

7.18

0.02

40.50

Local habitat - Cos(Aspect)

2

52.89

7.24

0.02

40.50

Surface temperature (variation)

2

53.16

7.51

0.02

40.50

Local habitat - Slope + Elevation + Cos(Aspect)

4

55.81

10.16

0.01

81.00

  1. Model-selection parameters from competing models used to examine the effects of microrefuges and surface temperatures on American pika (Ochotona princeps) occurrence in western Wyoming, USA, June – October, 2010 – 2012; K, number of parameters in the model; AICc, Akaike Information Criterion corrected for small samples; Δ AICc, difference for model relative to the smallest AICc in the model set; W j, Akaike weight is the approximate probability in favor of the given model from the set of models considered; E j represents the weight of evidence in support of a model, compared to the top ranked model (W jTop/W ji)