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

Table 2.

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

Parameter name	Average value	Coefficient of variation (CV)	PERMANOVA analysis
Parameter name	Average value	Coefficient of variation (CV)	R²	P value
Quantitative variables
Organic carbon concentration (C_org) (mg L⁻¹)	1.94	0.4	*0.177*	*0.0009*
Total phytoplankton biomass (∑PB) (μg L⁻¹)	48.08	0.9	*0.165*	*0.0009*
Chlorophyll a concentration (Сhl_a) (μg L⁻¹)	0.96	1.23	*0.144*	*0.0009*
Total rate of primary production (∑PP) (μg C L⁻¹ day⁻¹)	7.68	1.28	*0.154*	*0.0009*
Biological oxygen depletion (BOD) (mg O₂ L⁻¹)	0.71	0.77	*0.23*	*0.0009*
Total bacterial count (NB)(cells mL⁻¹)	930.58	1.07	*0.44*	*0.0009*
Count of organotrophic bacteria (OB) (CFU mL⁻¹)	390.54	3.20	*0.12*	*0.0009*
Count of thermotolerant bacteria cultivating at 22 °C (TMC22C)(CFU mL⁻¹)	219.78	4.5	*0.12*	*0.0019*
Count of thermotolerant bacteria cultivating at 37 °С (TMC37C)(CFU mL⁻¹)	17.14	3.36	0.024	0.30
Total bacterial primary production (∑BP) (μg C L⁻¹ day⁻¹)	0.63	0.66	*0.28*	*0.0009*
Qualitative variables
Sampling site			0.24	0.06
Sampling zone(river mouth, near-mouth littoral water, pelagic water)			0.04	0.34
Coast(western, eastern)			*0.11*	*0.021*
Biotope (water or ice sample)			*0.46*	*0.0009*