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ATLAS REPORT
Mangrove ecosystem report: Mauritius
Generated 15 October 2026, 02:45 from live Atlas data
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Executive summary
Atlas holds 29,614 mapped features and 23,095 observations in 14 datasets. The mapped mangrove canopy covers 415 ha in 443 polygons across 1 formation classes; Mangrove dominates with 100.0% of the area. The median patch is only 0.252 ha, while patches of 10 ha or more hold 15.1% of the area. 0 ha (0.0%) lies within 10 km of the LAPSSET development footprint.
Single mapping epoch (2019). Areas are geodesic hectares recalculated from geometry.
Species & formations
| Formation | Polygons | Area (ha) | Share | Mean patch (ha) |
|---|---|---|---|---|
| Mangrove | 443 | 415.3 | 100.0% | 0.94 |
Shannon evenness by area: 0.00
Fragmentation & landscape metrics
- Patches
- 443
- Mean / median / largest
- 0.94 / 0.252 / 14.4 ha
- Effective mesh size
- 4.7 ha
- Largest patch index
- 3.5%
- Power-law exponent α
- 2.16
Spatial clustering
Global Moran’s I = 0.186 (z = 1.7, p = 0.099). Hot-spot cells (Gi*, ≥95%): 4; cold-spot cells: 3.
| Top hot-spot cell | Polygons | Area (ha) | Gi* z |
|---|---|---|---|
| -20.1, 57.7 | 13 | 12 | 2.76 |
| -20.05, 57.7 | 13 | 4 | 2.29 |
| -20.1, 57.65 | 38 | 38 | 2.15 |
| -20.15, 57.7 | 20 | 31 | 2.14 |
| -20.35, 57.75 | 10 | 6 | 1.75 |
| -20.25, 57.75 | 13 | 4 | 1.73 |
Methods & limits
Areas and lengths are recomputed on the WGS 84 ellipsoid; units are harmonised (ha, m, %, UTC). The mapping is a single 2019 epoch; the source publishes no licence; field plots are a sample; scenario figures are illustrative assumptions. Cite the original publishers listed above. Full methods: Methodologies page.