Ecological Archives E083-012-A3

Paul B. Drewa, William J. Platt, and E. Barry Moser. 2002. Fire effects on resprouting of shrubs in headwaters of southeastern longleaf pine savannas. Ecology 83:755–767.

Appendix C. Mixed linear model ANCOVA of shrub densities divided into two groups based on underground organ morphology in Florida.

Source of Variation NDF DDF Type III F P
Covariate 1 210 261.33 <0.001
Fire Season 1 6 12.26 0.013
Plot (Fire Season) 6      
Habitat 1 6 0.19 0.678
Habitat x Fire Season 1 6 1.26 0.305
Habitat x Plot (Fire Season) 6      
Morphology 1 12 <0.01 0.986
Fire Season x Morphology 1 12 5.43 0.038
Habitat x Morphology 1 12 0.03 0.856
Habitat x Fire Season x Morphology 1 12 2.04 0.179
Morphology x Plot (Habitat x Fire Season) 12      
Time 2 46 1.04 0.361
Fire Season x Time 2 46 4.10 0.023
Habitat x Time 2 46 0.29 0.753
Habitat x Fire Season x Time 2 46 3.61 0.035
Morphology x Time 2 46 0.30 0.745
Fire Season x Morphology x Time 2 46 5.34 0.008
Habitat x Morphology x Time 2 46 0.56 0.575
Habitat x Fire Season x Morphology x Time 2 46 3.33 0.045
Morphology x Time x Plot (Habitat x Fire Season) 46      
Residual 210      

   Note: Explanation of model and sources of variation follow Appendix B except Morphology: shrubs with root crowns and rhizomes.



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