Table 1 Posterior mean, 95% Credible Intervals (CrI) and Gelman–Rubin \(\hat{R}\) of population parameters estimated for elephants in Kaziranga by the Bayesian SCR model.
Parameter | Herd-adults | Adult males | Definition | ||||
|---|---|---|---|---|---|---|---|
Posterior Mean | Posterior 95% CrI | \(\hat{R}\) | Posterior Mean | Posterior 95% CrI | \(\hat{R}\) | ||
\(\sigma \) | 5.91 km | 5.18–6.81 | 1.011 | 3.64 km | 3.09–4.34 | 1.000 | Scale parameter of a half-normal distribution that represents space-use of individuals about their activity centres and thereby determines the rate of decline in detection probability with increasing distance from the activity centre |
\({\lambda }_{0}\) | 0.0009 | 0.0007–0.0011 | 1.002 | 0.002 | 0.001–0.003 | 1.000 | Basal encounter rate of elephants, or detection probability when activity centres exactly coincide with the trap location |
\(\psi \) | 0.80 | 0.65–0.95 | 1.009 | 0.47 | 0.36–0.61 | 1.004 | Proportion of the maximum possible elephants in the state-space S, as provided through data augmentation, that represents the true population |
N super | 1485 | 1219–1770 | 1.002 | 515 | 398–661 | 1.004 | Total number of elephants in the state-space S |
D | 0.68 | 0.56–0.81 | 0.24 | 0.18–0.30 | Estimated elephant density (individuals per km2) | ||
