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ATLAS REPORT
Mangrove ecosystem report: Benin
Generated 15 October 2026, 09:19 from live Atlas data
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Executive summary
Atlas holds 71,153 mapped features and 37,971 observations in 23 datasets. The mapped mangrove canopy covers 2,198 ha in 1,115 polygons across 1 formation classes; Mangrove dominates with 100.0% of the area. The median patch is only 0.178 ha, while patches of 10 ha or more hold 68.8% 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 | 1,115 | 2,198.4 | 100.0% | 1.97 |
Shannon evenness by area: 0.00
Fragmentation & landscape metrics
- Patches
- 1,115
- Mean / median / largest
- 1.97 / 0.178 / 808.6 ha
- Effective mesh size
- 319.3 ha
- Largest patch index
- 36.8%
- Power-law exponent α
- 1.80
Spatial clustering
Global Moran’s I = 0.379 (z = 3.2, p = 0.001). Hot-spot cells (Gi*, ≥95%): 4; cold-spot cells: 6.
| Top hot-spot cell | Polygons | Area (ha) | Gi* z |
|---|---|---|---|
| 6.35, 1.95 | 24 | 18 | 2.70 |
| 6.3, 1.95 | 266 | 374 | 2.41 |
| 6.25, 1.9 | 23 | 15 | 2.19 |
| 6.3, 1.9 | 224 | 964 | 2.03 |
| 6.3, 2.05 | 88 | 55 | 1.89 |
| 6.3, 2 | 81 | 224 | 1.85 |
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.