Table 1 Environmental parameters on nMDS axes. Bold values indicate significant correlations between environmental parameters and nMDS axes. Scores were calculated using a linear model including both axes. Asterisks represent significance levels: * represents p-value < 0.05; ** represents p-value < 0.01; and represents p-value < 0.001.

Type of variable	Variable	2015		2016
Type of variable	Variable	r²	p-value	r²	p-value
Hydrological	Water temperature	0.76	0.0001***	0.85	0.0001***
	Turbidity	0.10	0.4341	0.15	0.2058
	Salinity	0.27	0.0728	0.34	0.0145*
	Depth	0.44	0.0100**	0.25	0.0561
Meteorological	Air temperature	0.57	0.0008***	0.85	0.0001***
	PAR	0.44	0.0109*	0.42	0.0036**
	UVBR	0.42	0.0151*	0.57	0.0002***
	Wind speed	0.09	0.4646	0.12	0.2849
	Wind direction	0.05	0.6552	0.17	0.1558
	Pressure	0.06	0.5883	0.25	0.0594
	Humidity	0.13	0.3326	0.09	0.3744
	Precipitation	0.42	0.0081**	0.01	0.8872
Nutrient	PO₄³⁻	0.47	0.0054**	0.24	0.0441*
	NO₂⁻	0.04	0.7061	0.45	0.0026**
	NO₃⁻	0.22	0.1519	0.03	0.7130
	SiO₂	0.35	0.0281*	0.18	0.1245

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