Table 2. Generalised Additive Mixed effects models to test environmental associations of tracked leopard seals against simulated locations derived from correlated random walks.

Log-likelihoods of candidate models are shown and the model estimates of the fixed effects are shown for the three best models.

Environmental covariates	Log-likelihood	d.f.
Depth	-37641	3
Ice Concentration	-38559	3
Sea Surface Temperature	-43809	3
s(Depth)	-79647	4
s(Ice Concentration)	-5018268	4
s(Sea Surface Temperature)	-47452	4
Depth + Ice Concentration	-38525	4
Depth + Sea Surface Temperature	-43723	4
Ice Concentration + Sea Surface Temperature	-43035	4
Three best performing model outputs
	Value	Std Error	DF	t-value	P-value
Intercept	1.8525575	0.06117873	15794	30.28107	<0.0001
Depth	0.0001004	0.00001796	15794	5.592335	<0.0001
Intercept	1.8182649	0.04996534	15794	36.39053	<0.0001
Ice Concentration	-0.0120945	0.0003393	15794	-35.6459	<0.0001
Intercept	1.472342	0.6623101	15793	22.2304	<0.0001
Depth	-0.0001054	0.00001423	15793	-7.40215	<0.0001
Ice concentration	-0.0121492	0.00034026	15793	-35.7056	<0.0001