Table 4 Results from linear mixed-effects or Poisson regression models used to test for and quantify differences in total vegetation cover, percent nonnative cover, and number of native species between quadrats near horse feces and referent quadrats at horse trails in Coyote Canyon, Anza-Borrego Desert State Park, California, USA; Spring 2003.
Outcome variable | Covariate | Coefficient (CI) | P-value |
|---|---|---|---|
Percent total vegetative cover | Â | Â | Â |
| Â | Intercept | 1.07 (0.99, 1.16) | <0.01 |
| Â | Referent quadrat | -- | -- |
| Â | Quadrat near feces | 0.07 (0.0, 0.17) | 0.23 |
Percent nonnative cover | Â | Â | Â |
| Â | Intercept | 0.53 (0.44, 0.62) | <0.01 |
| Â | Referent quadrat | -- | -- |
| Â | Quadrat near feces | -0.07 (-0.16, 0.02) | 0.13 |
Number of native species | Â | Â | Â |
| Â | Intercept | 1.49 (1.38,1.61) | <0.01 |
| Â | Referent quadrat | -- | -- |
| Â | Quadrat near feces | 0.20 (0.04, 0.35) | <0.01 |