Ecological Archives E089-035-A1

Paul R. Gagnon and William J. Platt. 2008. Multiple disturbances accelerate clonal growth in a potentially monodominant bamboo. Ecology 89:612–618.

Appendix A. Mixed-model ANOVA for culm density in censuses 1 and 3, with orthogonal individual degree-of-freedom contrasts.

TABLE A1. Mixed-model ANOVA for culm density (number/m2) in censuses 1 and 3, with orthogonal individual degree-of-freedom contrasts. Fire treatment has two levels, burned and unburned. Stand Type has three levels, discrete blowdown, discrete canopy, and continuous canopy. Ndf = numerator degrees of freedom; Ddf = denominator degrees of freedom based on Kenward-Roger approximation.


Source of variation:

Ndf

Ddf

F

P

Census 1 fixed effects on culm density

       

   Stand type

2

23.8

0.12

0.8907

   Fire (burned × unburned)

1

23.8

0.00

0.9944

   Stand type × fire

2

23.8

0.60

0.5554

Individual degree of freedom contrasts

       

   (Blowdown × canopy) × (burned × unburned)

1

23.9

0.26

0.6130

   (Discrete canopy × continuous) × (burned × unburned)

1

23.7

0.94

0.3424

         

Census 3 fixed effects on culm density

       

   Stand type

2

27

19.27

<.0001

   Fire

1

27

5.29

0.0294

   Stand type × fire

2

27

2.42

0.1084

Individual degree-of-freedom contrasts

       

   (Blowdown × canopy) × (burned × unburned)

1

28

4.59

0.0410

   (Discrete canopy × continuous) × (burned × unburned)

1

26

0.26

0.6157


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