parameters PC1 PC2 PC2
PO4-Summer 2008 0.783 0.396 -0.432
SiO2-Summer 2008 0.133 0.829 0.011
Chloa-Summer 2008 0.893 -0.146 -0.325
pH-Winter 2008 -0.845 0.298 0.274
NO2-Winter 2008 0.866 -0.214 -0.001
PO4-Winter 2008 0.97 -0.198 -0.055
SiO2-Winter 2008 0.924 -0.1518 0.289
T-Summer 2009 0.505 0.746 0.156
pH-Summer 2009 0.111 0.889 -0.189
NO2-Summer 2009 0.766 -0.045 0.385
Chla-Summer 2009 0.928 -0.133 -0.282
pH-Winter 2009 0.065 0.873 -0.095
PO4-Winter 2009 0.789 -0.137 0.017
SiO2-Winter2009 0.869 0.261 -0.031
Chloa-Winter 2009 0.986 -0.032 -0.049
Variance explained 10.38 4.567 2.406
% Total variance 43.25 19.03 10.03
Cumulative (%) 43.25 62.28 72.31
Table 4: Results from the principal component analysis. Vectors, eigenvalues and cumulative variance (principal vectors are in bold).