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ATLAS REPORT
Mangrove ecosystem report: Comoros
Generated 15 October 2026, 03:58 from live Atlas data
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Executive summary
Atlas holds 58,931 mapped features and 38,022 observations in 23 datasets. The mapped mangrove canopy covers 126 ha in 53 polygons across 1 formation classes; Mangrove dominates with 100.0% of the area. The median patch is only 0.961 ha, while patches of 10 ha or more hold 25.8% 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 | 53 | 126.1 | 100.0% | 2.38 |
Shannon evenness by area: 0.00
Fragmentation & landscape metrics
- Patches
- 53
- Mean / median / largest
- 2.38 / 0.961 / 21.5 ha
- Effective mesh size
- 7.8 ha
- Largest patch index
- 17.0%
- Power-law exponent α
- 1.82
Spatial clustering
Global Moran’s I = 0.239 (z = 1.2, p = 0.242). Hot-spot cells (Gi*, ≥95%): 1; cold-spot cells: 0.
| Top hot-spot cell | Polygons | Area (ha) | Gi* z |
|---|---|---|---|
| -12.4, 43.7 | 13 | 49 | 2.37 |
| -12.35, 43.65 | 4 | 14 | 1.41 |
| -12.4, 43.65 | 2 | 6 | 1.41 |
| -12.4, 43.75 | 1 | 6 | 1.38 |
| -12.2, 44.2 | 7 | 21 | 0.88 |
| -12.25, 44.25 | 1 | 3 | 0.88 |
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.