Ecological Archives E088-193-A6

Brian G. DeGasperis and Glenn Motzkin. 2007. Windows of opportunity: historical and ecological controls on Berberis thunbergii invasions. Ecology 88:3115–3125.

Appendix F (Table F1). Multiple regression of disturbance variables and environmental principal components vs. Berberis thunbergii log-occurrence.

 

df

χ2

P

Coefficient

Occurrence (R2 = 0.43)

       

Model

3

84.98

< 0.001

 

Intercept

   

< 0.001

-1.38

‘Soil Acidity’

1

27.37

< 0.001

1.02

‘Soil Nutrients’

1

26.46

< 0.001

-0.85

‘Soil Texture’

1

1.48

0.22

-0.19



[Back to E088-193]