Table 3.

ANOVA output from the general additive model investigating the relationship between number of fish entering the trap daily and day of the year, sex and sea age, water temperature, and discharge

Parametric terms	df		Chi square value	p value
Sea age & sex (factor, 8 levels)	7		16.99	0.02

Approximate smooth terms	Estimated df	Ref. df	Chi square value	p value
s(Discharge)	2.96	3.00	134.76	2.0e−16
s(Temp)	2.86	2.98	36.10	1.3e−07
s(Day, by female 1)	1.00	1.00	3.65	0.06
s(Day, by female 2)	2.86	2.98	77.40	2.0e−16
s(Day, by female 3)	2.69	2.91	57.17	2.9e−12
s(Day, by female 4)	2.52	2.84	14.15	2.7e−03
s(Day, by male 1	2.78	2.96	56.86	9.7e−11
s(Day, by male 2)	2.83	2.98	56.17	1.4e−11
s(Day, by male 3)	2.67	2.92	24.00	2.0e−05
s(Day, by male 4)	1.89	2.12	4.93	0.11

Significant variables are shown in bold. df; degrees of freedom. Females and males numbered 1–4 indicated sea ages 1–4 within each sex.