Table 3.
Mean ecosystem service supply within the upper and lower portions of the Guánica study area, as compared to the minimum, median, and maximum across all HUC10 watersheds in Puerto Rico. Bold values indicate values in Guánica that were higher than the median.
| Ecosystem Service Metric | Min | Median | Max | Upper Guánica | Lower Guánica |
|---|---|---|---|---|---|
| PM10 pollutant removal (g/m2/s) | 16.5 | 34.94 | 59.86 | 59.86 | 25.55 |
| Water yield (m3/m2/year) | 0.65 | 1.38 | 1.81 | 1.59 | 1.12 |
| Retained rainwater (mm3/mm2/rain event) | 57.15 | 112.72 | 148.08 | 144.95 | 100.29 |
| Denitrification (g/m2/yr) | 0.32 | 1.18 | 4.61 | 0.40 | 2.88 |
| Nitrogen retention (kg/km2/yr) | 0 | 109.61 | 4.0 × 1020 | 7.00 × 1018 | 3.11 |
| Phosphorus retention (kg/km2/yr) | 0 | 6.12 | 7.7 × 1020 | 1.30 × 1013 | 0.02 |
| Sediment retention (kg/m2/yr) | 23.60 | 83.97 | 133.08 | 66.73 | 83.15 |
| Nitrogen fixation (g/m2/yr) | 2.72 | 15.91 | 24.66 | 24.66 | 11.47 |
| Soil carbon content (g/m2) | 5472.8 | 5882.6 | 6144.2 | 5659.2 | 5714.7 |
| Farmland quality (% potential farmland/watershed) | 5.89 | 23.96 | 37.59 | 5.89 | 34.96 |
| Forest habitat (% per watershed) | 7.86 | 46.53 | 72.05 | 72.05 | 33.37 |
| Threatened & endangered species (#/km2) | 0.42 | 0.97 | 2.23 | 2.23 | 0.87 |
| Rare, endemic, & charismatic species (#/km2) | 5.68 | 14.16 | 23.65 | 23.65 | 11.97 |
| Tree canopy in urban areas (% per watershed) | 11.39 | 31.09 | 38.30 | 36.49 | 29.92 |
| Coastline designated beach (% per watershed) | 0 | 5.69 | 25.92 | 0.00 | 15.09 |
| Coral reef habitat (km2) | 0 | 10.63 | 226.55 | 0.00 | 226.55 |
| Mangrove habitat (km2) | 0 | 0.45 | 18.76 | 0.00 | 8.16 |
| Value of finfish stock ($200US/m2) | 0 | 1.21 | 2.87 | 0.00 | 1.49 |
| Fishing, snorkeling opportunities (relative value) | 0 | 1.25 | 2.33 | 0.00 | 1.50 |