Table 1.
Background information on species and environmental variables found significant in Poisson regression of each species.
| Species/abbreviation | Feeding guild | Rank of abundance | Index of herding | Significant variables (abbreviations) in Poisson regression |
|---|---|---|---|---|
| Elephant bulls (Eb) | Mixed feeder | 5 | 5 | Woody cover (W) |
| Giraffe (Gi) | Browser | 4 | 3 | Herbaceous biomass (B), geology (G) |
| Impala (Im) | Mixed feeder | 1 | 1 | Herbaceous biomass (B), distance to river (DR), land system (LS) |
| Kudu (Ku) | Browser | 5 | 3 | a |
| Warthog (WH) | Grazer | 5 | 3 | a |
| Waterbuck (WBk) | Grazer | 5 | 3 | Distance to river (DR) |
| White Rhino (WR) | Grazer | 5 | 4 | Herbaceous biomass (B), woody cover (W) |
| Wildebeest (WiB) | Grazer | 3 | 1 | Herbaceous biomass (B) |
| Zebra (Ze) | Grazer | 2 | 2 | Herbaceous biomass (B) |
Notes: Rank of abundance shows the relative abundance of the species based on historical data (1 is most abundant and 5 least). Index of herding shows the degree to which the species groups in herds based on the inter-quartile range of herd size (1 is most prone to herding and 5 is least). Species with comparable abundance (or index of herding) were given the same rank.
a
None of the available environmental variables were significant in Poisson regression.