Table 5. Number and frequency (% within parentheses) of a variable being found significant out of the total number of significant findings for behaviour (n = 151) or survival (n = 66).

		Study focus
Category	Variable	Behaviour	Survival
Environmental	Temperature	27 (17.9)	6 (9.1)
	Depth	16 (10.6)	1 (1.5)
	Diel Effects	16 (10.6)	0 (0)
	Tide	15 (9.9)	0 (0)
	Current	8 (5.3)	0 (0)
	Salinity	7 (4.6)	2 (3)
	Productivity	2 (1.3)	3 (4.5)
	River Discharge	4 (2.6)	3 (4.5)
Physiological	Reproductive State	2 (1.3)	2 (3)
	Stress Hormones	0 (0)	1 (1.5)
	Ionoregulatory State	0 (0)	3 (4.5)
	Energetic Status	3 (2)	1 (1.5)
Other	Fish Size	16 (10.6)	15 (22.7)
	Stock	16 (10.6)	14 (21.2)
	Sex	2 (1.3)	1 (1.5)
	Release Date	4 (2.6)	4 (6.1)
	Release Location	2 (1.3)	3 (4.5)
	Trophic Effects	5 (3.3)	1 (1.5)
	Fisheries	1 (0.7)	4 (6.1)
	Predation	5 (3.3)	2 (3)
Total		151 (100)	66 (100)

Note that the table is based on studies focusing solely on behaviour or survival, but not both.