Table 2.
Results of the full (all camera traps) and half (every second camera trap in the grid) SECR density estimate models for chimpanzees, gorillas, and elephants in Loango NP, Gabon
| Full models | Half models | |||
|---|---|---|---|---|
| Density estimate | SE | Density estimate | SE | |
| Chimpanzee | ||||
| Null | 1.49 (1.35–1.65) | 0.08 | 1.14 (0.9–1.43) | 0.13 |
| Sex | 1.42 (1.32–1.54) | 0.11 | 1.15 (1–1.35) | 0.17 |
| Sexhet | 1.72 (1.54–1.95) | 0.21 | 2.27 (1.73–3.29) | 0.76 |
| Gorilla | ||||
| Null | 0.71 (0.51–0.98) | 0.12 | 0.74 (0.5–1.09) | 0.15 |
| Sex | 0.79 (0.66–0.99) | 0.18 | 0.82 (0.65–1.09) | 0.21 |
| Sexhet | 1.08 (0.84–1.56) | 0.33 | 1.2 (0.89–1.86) | 0.47 |
| Group | 0.71 (0.61–0.87) | 0.13 | 0.75 (0.62–0.94) | 0.16 |
| Grouphet | 1.2 (0.93–1.68) | 0.37 | 1.32 (0.96–2.14) | 0.57 |
| Elephant | ||||
| Null | 1.33 (1.12–1.58) | 0.12 | 1.41 (1.17–1.71) | 0.14 |
| Sex | 1.34 (1.21–1.51) | 0.15 | 1.41 (1.26–1.6) | 0.18 |
| Sexhet | 1.37 (1.25–1.54) | 0.16 | 1.95 (1.73–2.28) | 0.29 |
Null, null model; sex, heterogeneity between sexes; sexhet, heterogeneity between sexes and individuals; group, heterogeneity between group and solitary individuals; grouphet, heterogeneity between group and solitary, and between all individuals. Results in bold denote the top SECR full and half models for each species.