Table 3.
Estimated taxa richness according the abundance-based coverage estimator (ACE) and Chao1 for the four study sites in the Danube Delta Biosphere Reserve (Romania) during the sampling period in 2014
| Dunărea Veche | Lacul Roșuleț | Letea | Sulina | |
|---|---|---|---|---|
| Observed number of taxa | 8.000 | 9.000 | 12.000 | 12.000 |
| Chao1 | 8.000 | 9.000 | 12.000 | 15.000 |
| Chao1 standard error | 0.000 | 0.000 | 0.000 | 4.517 |
| ACE | 8.000 | NaNa | 13.380 | NaNa |
| ACE standard error | 0.935 | NaNa | 1.708 | NaNa |
aCalculation of the ACE not possible, because all rare species (<10 specimens) contained only a single specimen