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All issues No 417 (2016) Knowl. Manag. Aquat. Ecosyst., 417 (2016) 22 Full HTML

Table 3

Canonical and correlation coefficients of environmental variables with axis. p< 0.05 is in bold.

Canonical coefficients
 Correlations with axis
Environmental and biological parameters AX1 AX2 AX1 p AX2 p
Distance from the source (km) 0.2343 −0.3328 0.6723 0.001 −0.2799 0.001
Watershed area (km2) 0.3575 0.2081 0.6867 0.001 −0.2684 0.001
Altitude (m a.s.l.) −0.4765 0.1254 −0.4512 0.001 0.2826 0.001
Average slope (%) −0.0644 0.2086 −0.1923 0.006 0.1473 0.035
pH (units) −0.1047 0.3089 −0.0691 0.324 0.0307 0.661
Conductivity (μs.cm-1 at 25 °C) 0.1562 −0.0342 0.3253 0.001 −0.2825 0.001
NNH3 (mg.L-1) 0.1372 −0.0459 0.2611 0.001 −0.0752 0.282
SO4 (mg.L-1) 0.0848 −0.2104 0.3356 0.001 −0.2681 0.001
Cl (mg.L-1) 0.0993 0.1424 0.2815 0.001 0.1179 0.091
Water temperature (°C) 0.0195 −0.071 0.1705 0.014 −0.0128 0.855
Dissolved oxygen (mg.L-1) −0.2684 −0.5933 −0.2341 0.001 −0.1304 0.062
E.B.I. (units) 0.0338 −0.1792 −0.3151 0.001 −0.2098 0.002
Average current speed (m.s-1) −0.0085 −0.6059 0.2055 0.003 −0.0877 0.210
Flow rate (m3.s-1) −0.1098 12.152 0.3801 0.001 −0.0029 0.967
Wetted river section (m) 0.1605 −0.7876 0.5191 0.001 −0.1506 0.031

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