Table 2 The degrees of freedom, F value, and statistical significance from a single factor ANOVA test determining differences between ground cover percentages, total crust cover, and soil properties at urban and non-urban sites.
From: Spatial cover and carbon fluxes of urbanized Sonoran Desert biological soil crusts
Factors | df | F |
|---|---|---|
Ground cover percentage | ||
Light cyanobacterial crusts | 1.5 | n.s |
Dark cyanobacterial crusts | 1.5 | n.s |
Rock | 1.5 | n.s |
Litter | 1.5 | n.s |
Vegetation/canopy cover | 1.5 | n.s |
Soil properties | ||
pH | 1 | n.s |
Soil organic matter (%) | 1 | n.s |
Total crust cover | ||
Site | 1.11 | n.s |
Open vs. under plant (cover) | 1.11 | 5.85055* |
Interaction between site and cover | 1.11 | 12.83538** |
Carbon flux | ||
Time | 5.69 | 28.547*** |
Cyanobacterial type | 1.69 | n.s |
Site | 1.69 | n.s |
Interaction between cyanobacterial type and time | 5.69 | n.s |
Interaction between cyanobacterial type and site | 1.69 | 6.135* |
Interaction between site and time | 5.60 | n.s |
Cyanobacterial type * site * time | 5.69 | n.s |
Gross photosynthesis | ||
Time | 5.36 | n.s |
Site | 1.36 | 12.333** |
Interaction between site and time | 5.36 | n.s |
