Influence of monsoon-driven hydrographic features on thaliacean distribution in waters around Taiwan, western North Pacific Ocean

Zoological Studies

Table 4 Results of a forward stepwise regression and partial correlation coefficient ( R )

Species	R for T	R for S	R for C	Predictive equation
Thalia rhomboides (TR)	0.377*	0.214	−0.233	TR = 6.13 T − 42.41
Doliolum denticulatum (DD)	−0.009	−0.101	0.277*	DD = 3.85 C + 16.14
Doliolum nationalis	0.162	0.049	0.160	ns
Thalia orientalis (TO)	0.483**	0.167	−0.432*	TO = 6.00 T − 4.98 C + 0.89
Pyrosoma verticillatum	0.218	−0.085	0.012	ns
Thalia democratica (TD)	0.526***	0.098	−0.389	TD = 7.07 T + 24.76
Total thaliaceans (TT)	0.278**	0.042	0.090	TT = 4.28 T + 3.29
Species number (SN)	0.501**	0.222	−0.415*	SN = 1.30 T − 0.90 C − 3.43
Species diversity (SD)	0.380	0.260	−0.433*	SD = −0.75 C − 5.27

Relationships of abundances of the six predominant thaliacean species (with a relative abundance of 93%) and environmental variables in waters around Taiwan in winter and summer 2004 are evaluated; *p < 0.05, **p < 0.01, ***p < 0.001; ns, not significant; T, temperature; S, salinity; C, chlorophyll a.