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. 2015 May 5;6:361. doi: 10.3389/fmicb.2015.00361

Table 3.

Factor loadings and cumulative variance explained obtained in the factor analysis of chemical and physical variables of the 17 high altitude lakes studied.

Physical variables Factor F1 Factor F2 Factor F3
Lake morphometry –Altitude –Temperature
Zmax 0.946
Lake area 0.874
Secchi depth 0.685
Watershed area 0.926
Altitude −0.884
Water temperature −0.911
Cumulative Variance 37.8% 67.4% 85.3%
Chemical variables Factor C1 Factor C2 Factor C3
Productivity –Watershed DOC Lithology
TP 0.922
Chla 0.776
DOC −0.769
DRSi 0.765
SO4 0.678
NO3 0.526
Conductivity 0.951
Ca2+ 0.937
Cumulative Variance 21.8% 43.4% 64.5%