Seasonal and daily upstream movements of brown trout Salmo trutta in an Iberian regulated river | Knowledge and Management of Aquatic Ecosystems

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Table 1

Correlations between hourly number of migrants and environmental variables (n is the number of fish and ρ is the Spearman correlation coefficient).

Season	Date range	n	Water temperature		Flow		Solar radiation		Rainfall

			ρ	p-value	ρ	p-value	ρ	p-value	ρ	p-value
Autumn (2011)	04/10/2011–30/11/2011	171	−0.1396	0.0000	0.1425	0.0000	0.1478	0.0000	0.3356	0.0258
Autumn (2012)	01/09/2012–30/11/2012	147	−0.0742	0.0005	0.0488	0.0226	0.0246	0.2497	0.0606	0.0046
Winter (2011)	01/12/2011–28/02/2012	151	0.1637	0.0000	0.0984	0.0000	0.0657	0.0022	0.0460	0.0318
Winter (2012)	01/12/2012–30/01/2013	88	0.0215	0.4117	0.0367	0.1603	0.1127	0.0000	0.0194	0.4591
Spring (2012)	01/03/2012–31/05/2012	13	0.0450	0.0345	0.0524	0.0139	0.0495	0.0201	−0.0189	0.3750
Summer (2012)	01/06/2012–31/08/2012	100	0.0594	0.0052	0.0487	0.0222	0.1769	0.0000	0.0100	0.6398
Summer migration (2012)	01/07/2012–15/09/2012	114	−0.0125	0.5903	0.0427	0.0668	0.2130	0.0000	0.0222	0.3404
Spawning migration (2011)	04/10/2011–31/12/2011	277	−0.0516	0.0169	0.1054	0.0000	0.1428	0.0000	0.0301	0.1640
Spawning migration (2012)	01/10/2012–31/12/2012	195	−0.0026	0.9029	0.0044	0.8355	0.1110	0.0000	0.0175	0.4110

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