Table 2. Mean population densities of Diadema antillarum and reef complexity (rugosity measurements) recorded at each sampling depth (shallow, intermediate and deep) for all sampling sites where urchins were observed.
Data are site, sampling depth (m), mean density (ind./m2) and mean rugosity.
| Site | Samplingdepth (m) | Mean density(ind./m2) | Meanrugosity |
|---|---|---|---|
| Corona 1 | 0–3 | 0.28 ± 0.48 | 1.0 ± 0 |
| Corona 2 | 0–3 | 0.02 ± 0.05 | 1.0 ± 0 |
| Corona 3 | 0–3 | 0.74 ± 0.95 | 1.0 ± 0 |
| Total | 0.35 ± 0.45 | 1.0 ± 0 | |
| Caracoles | 0–5 | 1.09 ± 0.5 | 1.5 ± 0.14 |
| 7–12 | 0.1 ± 0.1 | 1.3 ± 0.13 | |
| >12 | 0.04 ± 0.1 | 1.3 ± 0.11 | |
| Total | 0.41 ± 0.25 | 1.37 ± 0.13 | |
| Enrique | 0–5 | 2.25 ± 0.66 | 1.6 ± 0.07 |
| 7–12 | 0.01 ± 0 | 1.3 ± 0.07 | |
| 12 + | 0 | 1.1 ± 0.08 | |
| Total | 0.75 ± 0.22 | 1.33 ± 0.73 | |
| Mata la Gata | 0–5 | 3.03 ± 0.54 | 1.3 ± 0.1 |
| 7–12 | 0.2 ± 0.1 | 1.3 ± 0.12 | |
| >12 | 0.01 ± 0 | 1.4 ± 0.17 | |
| Total | 1.07 ± 0.21 | 1.33 ± 0.13 | |
| Laurel | 0–5 | 4.9 ± 2.11 | 1.7 ± 0.11 |
| 7–12 | 0.4 ± 0.2 | 1.5 ± 0.04 | |
| >12 | 0.13 ± 0.1 | 1.3 ± 0.1 | |
| Total | 1.81 ± 0.8 | 1.5 ± 0.25 | |
| Media Luna | 0–5 | 1.56 ± 1.09 | 1.5 ± 0.09 |
| 7–12 | 0.37 ± 0.1 | 1.3 ± 0.05 | |
| >12 | 0 | 1.1 ± 0.07 | |
| Total | 0.64 ± 0.4 | 1.3 ± 0.21 | |
| San Cristobal | 0–5 | 2.51 ± 0.84 | 1.4 ± 0.11 |
| 7–12 | 1.53 ± 1.5 | 1.3 ± 0.03 | |
| >12 | 0.08 ± 0.1 | 1.1 ± 0.06 | |
| Total | 1.37 ± 0.81 | 1.27 ± 0.07 |