Ecological Archives M077-005-A10

Paul Kardol, Nelleke J. Cornips, Monique M. L. van Kempen, J. M. Bakx-Schotman, and Wim H. van der Putten. 2007. Microbe-mediated plant–soil feedback causes historical contingency effects in plant community assembly. Ecological Monographs 77:147–162.

Appendix J. Results from PROC MIXED (SAS) analysis of effects of inoculum origin on plant biomass production of mid-successional plant species relative to the sterilized control treatment. Effects were tested for the grasses A. capillairs and Anthoxanthum odoratum, and the forbs A. millefolium and P. lanceolata. The inocula originated from soils with histories of the early-successional grasses A. geniculatus, A. spica-venti, P. annua and the early-successional forbs C. bursa-pastoris, C. canadensis, and V. arvensis. Plant guild (grass or forb), inoculum guild (originating from early-successional grass or from early-successional forb), and their interaction were included as fixed factors in the model, and plant species nested within plant guild and the interaction inoculum guild × plant species (plant guild) as random factors.

Effects

dfnum

dfdenom

F value

z

P

Plant guild

1

2

9.45

 

0.0915

Plant species(plant guild)

 
 
 

0.79

0.2153

Inoculum guild

1

2

12.12

 

0.0735

Plant guild × inoculum guild

1

2

2.38

 

0.2626

Inoculum guild × plant species(plant guild)

 
 
 

0.61

0.2715



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