Table 2.

Final candidate set of models of activity center movement by desert tortoises in the Ivanpah Valley, California, U.S.A., 2013–2015. All models other than the constant model included the interacting effects of year and date. K is the number of model parameters, LL is the model log‐likelihood, BIC is the Bayesian information criteria, ΔBIC is the difference between BIC values for each model and that with the lowest BIC, w _i is the model weight, and AUC is the area under the receiver operating curve (a measure of discriminatory ability)

Model	K	LL	BIC	ΔBIC	w i	AUC
Individuala + landscapeb + weatherc	29	−4,196.2	8,649.4	0.0	0.97	0.72
Individual + weather	27	−4,208.6	8,656.5	7.1	0.03	0.71
Individual + landscape + vegetationd + weather	33	−4,185.7	8,663.7	14.3	0.00	0.72
Individual + vegetation + weather	31	−4,199.4	8,673.5	24.1	0.00	0.71
Individual + landscape + vegetation	28	−4,245.5	8,739.0	89.6	0.00	0.71
Landscape + weather	21	−4,279.6	8,745.3	95.9	0.00	0.70
Individual + vegetation	26	−4,258.8	8,748.0	98.6	0.00	0.70
Weather	19	−4,291.5	8,751.3	101.9	0.00	0.70
Individual + landscape	24	−4,272.7	8,758.0	108.6	0.00	0.70
Landscape + vegetation + weather	25	−4,269.5	8,760.6	111.2	0.00	0.70
Individual	22	−4,284.0	8,762.9	113.5	0.00	0.70
Vegetation + weather	23	−4,282.8	8,769.3	119.9	0.00	0.70
Landscape + vegetation	20	−4,333.6	8,844.3	194.9	0.00	0.69
Vegetation	18	−4,346.3	8,852.2	202.7	0.00	0.68
Landscape	16	−4,361.3	8,864.3	214.9	0.00	0.68
Year and date	14	−4,372.0	8,868.1	218.7	0.00	0.68
Constant	3	−4,723.0	9,472.6	823.2	0.00	0.51

^aIndividual and social covariates; includes interactions between date and sex category.

^bTopography, structural, and burrow covariates; includes the local presence of minor roads and barrier fences.

^cWeather covariates; includes interactions between average daily maximum temperature and total recent rainfall.

^dVegetation covariates; includes interactions between date and recent normalized difference vegetation index.