Table 4
Results of the PCA-based GAM assuming a Gaussian error distribution, for the egg data from the summer (June and August) in the East Sea and West Sea. Composition of PC1, PC2, and PC3 are represented from Fig. 3

	East Sea				West Sea
	Total	1985	1995	2002	Total	1985	1995	2002
R ²(adj)	0.172	0.224	0.337	0.502	0.190	0.471	0.212	0.36
DE (%)	22.1	33.2	42.7	67.0	26.2	64.3	27.3	50.1
GCV	0.891	0.739	0.890	0.541	0.857	0.431	0.823	1.005
PC1	0.003**	0.042*	0.069’	0.009*	0.004**	0.104	0.423	0.089’
PC2	0.013*	0.011*	0.035*	0.029*	0.077	0.171	0.244	0.012*
PC3	0.002**	0.022*	0.008**	0.108	0.011*	0.009**	0.982	0.376