Ecological Archives A016-048-A3

Julian D. Olden, Michael K. Joy, and Russell G. Death. 2006. Rediscovering the species in community-wide predictive modeling. Ecological Applications 16:1449–1460.

Appendix C. Results from the principal components analysis on land-use and geology variables. Reported are eigenvalues (expressed as percent variation explained) and eigenvector loadings for the first two principal components.


 

Land-use variables

Geology variables

 

PC I

PC II

PC I

PC II


         

Variation explained (%)

21.7

15.2

24.9

16.7

         

Land-use variables

       

Urban

0.18

-0.06

   

Pastoral

0.43

-0.02

   

Native forest

-0.68

0.17

   

Exotic forest

0.24

0.14

   

Scrub

0.34

-0.22

   

Tussock

-0.27

0.07

   

Bare ground

-0.25

-0.64

   

Coastal

-0.08

-0.67

   

Other

0.08

-0.20

   
         

Geology variables

       

Surface rock

       

Peat

   

-0.05

0.35

Loess

   

-0.12

0.20

Alluvium

   

-0.15

0.39

Sand

   

-0.23

-0.04

Mud

   

-0.41

-0.20

Calcareous

   

-0.41

-0.18

Other

   

-0.01

0.18

Baserock

       

Peat

   

-0.05

0.35

Loess

   

-0.02

0.15

Alluvium

   

-0.17

0.39

Sand

   

-0.27

-0.01

Mud

   

-0.42

-0.19

Calcareous

   

-0.41

-0.18

Greywacke

   

0.34

-0.37

Windblown

   

-0.02

0.15

Other

   

-0.02

0.22




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