Table 2.

Spearman correlation results for the effects montanera (being fed just with natural resources, with a maximum density of 2 pigs per hectare in the late autumn and winter) in comparison to no montanera (being fed with natural resources and concentrate, with a maximum density of 67 pigs per hectare in spring to early autumn), later during the day (defined in base to observations during the afternoon and midday in comparison to the observations in the morning), and older (related with the age of the animals along the year, being the oldest in winter and the youngest in spring) according to distances to trees, drinker, feeder, water bath area, fences, and shelter areas (positive correlation showing a shorter distance to these resources and negative correlation a longer distance).

		Montanera			Moment of the day				Season
		Yes (%)	No (%)	r	Morning (%)	Midday (%)	Afternoon (%)	r	Spring (%)	Summer (%)	Autumn (%)	Winter (%)	r
Distance to trees	<20 m	95	53	0.40	63	74	41	0.06	27	59	84	94	0.50
	20–50 m	3	9		6	8	14		10	10	2	4
	>100 m	2	38		31	18	45		63	31	14	2
Distance to Feeder	<20 m	4	16	−0.21	15	7	16	−0.12	13	16	17	2	−0.13
	20–50 m	6	13		13	8	11		9	15	13	4
	>100 m	90	71		72	85	73		78	69	70	94
Distance to drinker	<20 m	2	8	−0.14	7	4	13	NS*	7	9	6	2	−0.08
	20–50 m	2	5		4	3	13		4	5	7	2
	>100 m	96	87		89	93	74		89	86	17	96
Distance to water bath	<20 m	4	11	−0.14	8	9	20	NS	5	14	10	4	NS
	20–50 m	5	9		8	9	4		6	10	9	5
	>100 m	91	80		84	82	76		89	76	81	91
Distance to fences	<20 m	31	40	−0.09	42	30	39	−0.10	34	41	39	32	NS
	20–50 m	16	15		15	15	13		18	12	15	17
	>100 m	53	45		43	55	48		48	47	46	51
Distance to shelter	<20 m	2	9	−0.14	7	6	11	NS	18	5	5	2	−0.17
	20–50 m	1	3		3	2	9		2	4	3	1
	>100 m	97	88		90	92	80		80	91	92	97

^*NS, not significant correlation at P < 0.05.