5/km 2 ), and approximately 400 times more abundant than leopards and elephants (?0.05/km 2 ; Table 3). We estimated that 13 elephants, 10–14 leopards (depending on availability estimator), 87–109 chimpanzees (depending on availability estimator), and 3949 Maxwell’s duikers occupied our 200-km 2 study area (Table 3). Estimates for duikers were the most precise (CV = 11%); estimates for chimpanzees were reasonably precise (20% < CV < 30%), and estimates for elephants were potentially too imprecise to be useful (50% < CV < 200%; Table 3). The analytic estimator yielded variances that were larger than those estimated by bootstrapping (except for very rare elephants), and only slightly larger than the variance of the encounter rate calculated from the raw data (Table 3).
- As well as revealed try %CVs of your own stumble on speed ( var ^ p dos ) calculated from the raw studies, and you can projected populace designs (N) with bootstrap LCLs and you may UCLs.
- † Detection mode abbreviations is actually UHR, unadjusted possibilities speed; UHN, unadjusted 1 / 2 of-normal.
Spatiotemporal sampling work and you will accuracy
Enhancing the number of testing cities got a slightly larger impact than the lifetime of testing for each and every area (during the months) to the reliability away from rates out-of duiker find rates, but a dramatically large affect the accuracy away from chimpanzee encounter costs (Desk 4). Continue reading