Bounded quadrats | Open quadrats |
|---|
| | n | Sobs
| SChao1
| SJack2
| α | D | Sobs
| SChao1
| SJack2
| α | D |
|---|
Lizards | 47 | 7 | 7 ± 0.03 | 6.99 ± 0.09 | 1.07 ± 0.15 | 15.45 ± 15.55 | 7 | 6.32 ± 0.47 | 6.86 ± 1.64 | 1.03 ± 0.15 | 6.15 ± 4.09 |
Frogs | 42 | 8 | 7.62 ± 1.58 | 7.95 ± 2.5 | 1.25 ± 0.23 | 7.19 ± 10.24 | 7 | 6.19 ± 2.06 | 7.53 ± 2.84 | 1.35 ± 0.24 | 1.31 ± 10.24 |
- Though 49 bounded quadrats were sampled, for the purpose of comparison of estimated species richness, we use a sample size of 47 for lizards because beyond this, the standard deviation of the estimated species richness became zero for jackknife2 estimate. Estimated species richness of frogs is compared at a sample size of 42 as the remaining 7 bounded quadrats were in small islands where no amphibian has ever been recorded. Fisher’s α is compared at a common number of individuals (757 lizards and 188 frogs). The standard deviations for density estimates presented here are unadjusted for sample size difference.
-
n number of quadrats based on which the estimates were arrived at, S
obs
observed species richness, S
Chao1
Chao1 estimate, S
Jack2
second order jackknife estimate, α Fisher’s alpha, D density (individuals/100 m2).
