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

Table 2 Rankings and relative support for local-habitat models that quantify pika occurrence

Model	K	AIC_c	Δ AIC_c	W _j	E _j
Cos(Aspect)	2	197.26	0.00	0.63	n/a
Slope + Elevation + Cos(Aspect)	4	199.29	2.03	0.23	2.74
Slope + Elevation + Cos(Aspect) + Forage	5	201.42	4.16	0.08	7.88
Slope	2	204.06	6.80	0.02	31.50
Global model	7	204.56	7.30	0.02	31.50
Elevation	2	205.98	8.71	0.01	63.00
Forage	2	206.23	8.97	0.01	63.00
Elevation (quadratic)	3	207.52	10.26	0.00	undefined
Elevation x Forage	4	209.12	11.85	0.00	undefined

Model-selection parameters from competing models used to explain the effects of local-habitat parameters on American pika (Ochotona princeps) occurrence in western Wyoming, USA, June – October, 2010 – 2012; K, number of parameters in the model; AIC_c, Akaike Information Criterion corrected for small samples; Δ AIC_c, difference for model relative to the smallest AIC_c 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)

ISSN: 2053-7565