Ecological Archives A024-213-A5
M. Annala, H. Mykrä, M. Tolkkinen, T. Kauppila, T. Muotka. 2014. Are biological communities in naturally unproductive streams resistant to additional anthropogenic stressors?. Ecological Applications 24:1887–1897. http://dx.doi.org/10.1890/13-2267.1
Appendix E. PCA loadings of the water chemistry variables.
Table E1. Loadings of the water chemistry variables on PC1 and PC2.
|
PC1 |
PC2 |
|
Conductivity |
0.569 |
0.412 |
|
Alkalinity |
-0.718 |
0.522 |
|
pH |
-0.815 |
0.475 |
|
DOC† |
0.210 |
-0.882 |
|
TotP |
-0.128 |
-0.114 |
|
Cu |
0.867 |
0.118 |
|
Mn |
0.786 |
-0.120 |
|
Ni |
0.839 |
0.375 |
|
Pb |
0.266 |
-0.874 |
|
Zn |
0.831 |
0.339 |
|
SO4 |
0.867 |
0.376 |
†dissolved organic carbon