Table 5. Statistics of the parsimonious GAMs applied to the acoustic survey data for the dependent variable “Female biomass” and analysis of deviance for GAMs covariates and their interactions of the final model fitted.

				Parametric coefficients: Intercept				Approx. significance of s(Lon,Lat)
Year	N	R 2 ad.	DE %	Estimate	SE	t value	Pr(>|t|)	edf	Ref.df	F	p-value
2003	251	0.341	59.9	0.045	0.084	0.534	0.59400	43.15	54.40	3.406	1.43E-10
2004	272	0.541	73.7	−0.118	0.077	−1.537	0.12600	85.22	103.90	1.950	3.87E-05
2005	279	0.587	73.9	−1.142	0.143	−7.980	7.16E-14	50.53	53.78	5.128	2E-16
2006	276	0.431	70.6	−0.366	0.112	−3.265	0.00128	70.57	88.39	1.585	0.00408
2007	290	0.472	73.4	−1.087	0.132	−8.247	1.72E-14	77.70	96.29	1.914	5.37E-05
2008	273	0.726	89.4	−1.501	0.274	−5.481	1.44E-07	95.22	109.20	2.617	5.95E-09
2009	278	0.714	85.6	−0.548	0.144	−3.816	0.00018	90.17	107.10	3.164	2.67E-12
2010	276	0.576	77.3	−0.369	0.101	−3.663	0.00033	92.27	110.20	2.363	1.29E-07

Model formula: Female biomass , family: quasipoisson, link function: log.