Table 6. Closed-population estimates.
| Sample Period | Model | n | r | θ | Ntot | SE | 95% CI |
|---|---|---|---|---|---|---|---|
| 2010 Season | Schnabel's binomial | 202 | 7 | 0.80 | 1758 | 723.3 | 783–4355 |
| Schumacher & Eschmeyer | 202 | 7 | 0.80 | 1629 | 291.9 | 1156–2724 | |
| 2010 Aug 25–Sept 2 | Schnabel's binomial | 154 | 7 | 0.80 | 965 | 397.4 | 430–2390 |
| Schumacher & Eschmeyer | 154 | 7 | 0.80 | 985 | 175.0 | 494–1683 | |
| 2011 Season | Schnabel's binomial | 169 | 22 | 0.95 | 493 | 108.1 | 318–781 |
| Schumacher & Eschmeyer | 169 | 22 | 0.95 | 459 | 59.6 | 357–642 | |
| 2011 Aug 22–27 | Schnabel's binomial | 111 | 21 | 0.95 | 180 | 40.4 | 114–289 |
| Schumacher & Eschmeyer | 111 | 21 | 0.95 | 201 | 29.5 | 143–340 |
The table shows the estimates for the local populations of basking shark temporarily present in the Inner Hebrides study area during different periods in 2010 and 2011, together with the values of the following variables: n = shark encounters included, r = re-sights, θ = proportion of recognizable sharks in population, Ntot = total estimated abundance during sample period, SE = standard error, CI = confidence interval.