TABLE 2.

The Mantel tests on connectivity versus the networked species significances of environmental factors in PZNs^a

		Temperatureb		Salinity		N		pH		Metal
Phyto-zooplankton network	Networked taxa	P	R	P	R	P	R	P	R	P	R
PSZN	Zooplankton	0.857	−0.079	0.829	−0.081	0.644	−0.056	0.043*	0.183	0.573	−0.031
	Phytoplankton	0.350	0.011	0.420	−0.006	0.778	−0.063	0.267	0.034	0.001***	0.411
PBZN	Zooplankton	0.713	−0.091	0.34	−0.038	0.687	−0.107	0.282	−0.030	0.045*	0.257
	Phytoplankton	0.461	−0.044	0.379	−0.026	0.609	−0.103	0.674	−0.117	0.005**	0.721

^aStatistical significance is shown by asterisks (***, P < 0.001; **, P < 0.01; *, P < 0.05).

^bTemperature, water temperature; N, nitrate nitrogen, nitrite nitrogen, and ammonia nitrogen; Metal, the concentrations of Zn, Pb, As, Cu, and Hg.