. 2020 Jul 6;10:11087. doi: 10.1038/s41598-020-66519-3

Table 1.

PERMANOVA analysis results for the assessing the statistical significance of the influence of hydrochemical parameters in sampling sites on the complex of biological parameters.

Parameter name	Average value	Coefficient of variation (CV)	PERMANOVA analysis
Parameter name	Average value	Coefficient of variation (CV)	R²	P value
Quantitative variables
Na⁺ concentration (mg L⁻¹)	2.16	0.77	*0.30*	*0.0009*
K⁺ concentration (mg L⁻¹)	0.75	0.69	*0.24*	*0.0009*
Ca²⁺ concentration (mg L⁻¹)	10.09	0.66	*0.27*	*0.0009*
Mg²⁺ concentration (mg L⁻¹)	1.88	0.75	*0.26*	*0.0009*
HCO₃⁻ concentration (mg L⁻¹)	37.99	0.75	*0.27*	*0.0009*
C(CO₂) concentration (mg L⁻¹)	1.29	1.55	*0.08*	*0.038*
Cl^- concentration (mg L⁻¹)	0.64	1.31	*0.27*	*0.0009*
N(NO₂⁻) concentration (mg L⁻¹)	0.0030	2.44	0.05	0.09
N(NO₃⁻) concentration (mg L⁻¹)	0.30	1.98	0.05	0.09
S(SO₄²⁻) concentration (mg L⁻¹)	2.027	0.77	*0.06*	*0.027*
N(NH₄⁺) concentration (mg L⁻¹)	0.012	1.86	*0.18*	*0.003*
P(PO4₃⁻) concentration (mg L⁻¹)	0.013	2.26	*0.30*	*0.0009*
Si concentration (mg L⁻¹)	0.86	1.13	*0.07*	*0.019*
Chemical oxygen depletion (COD) (mg O₂ L⁻¹)	3.25	0.64
pH	7.36	0.10	*0.245*	*0.0009*
Qualitative variables
Sampling site			*0.27*	*0.015*
Sampling zone(river mouth, near-mouth littoral water, pelagic water)			0.04	0.3
Coast(western, eastern)			*0.09*	*0.038*
Biotope (water or ice sample)			*0.171*	*0.0009*