Table 4 Estimated species richness (mean, standard error and 95% confidence interval) based on non-parametric estimators of species richness computed using EstimateS 8.2 (Colwell 2009)
Estimator | Total | Native species | Alien species |
|---|---|---|---|
No. of observed species | 74 | 64 | 10 |
Chao2 | 90.3 ± 12.7 (78.2–137.1) | 82.1 ± 14.9 (68.4–138.1) | 10 ± 0.3 (10.0–10.0) |
ICE | 82.5 ± 0.01 | 72.2 ± 0.01 | 10.6 ± 0 |
1st order jackknife | 85.8 ± 3.1 | 74.8 ± 3.0 | 11 ± 1 |
2nd order jackknife | 94.6 | 83.6 | 11 |
Bootstrap | 78.9 | 68.5 | 10.5 |