Ecological Archives E096-065-A1

M. Tolkkinen, H. Mykrä, M. Annala, A. M. Markkola, K. M. Vuori, T. Muotka. 2015. Multi-stressor impacts on fungal diversity and ecosystem functions in streams: natural vs. anthropogenic stress. Ecology 96:672–683. http://dx.doi.org/10.1890/14-0743.1

Appendix A. Summary of the principal component analysis of the environmental variables.

Table A1. Summary of the principal component analysis of the environmental variables. Shown are variable loadings on the three first PC axes with eigenvalues > 1.0. The most important variables for each axis are given in bold.

Variable

PC1

PC2

PC3

pH

-0.94

-0.11

-0.11

Alkalinity

-0.90

-0.08

0.03

Al

0.88

0.20

0.28

Fe

0.88

0.08

0.28

Zn

0.79

0.53

-0.02

Cu

0.71

0.56

0.21

Current velocity

0.21

0.75

0.29

Particle size

0.07

0.69

-0.22

Conductivity

0.34

0.68

-0.13

DOC

0.60

-0.67

-0.03

Tot-P

0.11

-0.08

0.95


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