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ATLAS REPORT
Mangrove ecosystem report: Ghana
Generated 15 October 2026, 09:15 from live Atlas data
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Executive summary
Atlas holds 118,503 mapped features and 37,971 observations in 29 datasets. The mapped mangrove canopy covers 9,126 ha in 2,198 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 86.9% 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 | 2,198 | 9,125.9 | 100.0% | 4.15 |
Shannon evenness by area: 0.00
Fragmentation & landscape metrics
- Patches
- 2,198
- Mean / median / largest
- 4.15 / 0.178 / 3,425.3 ha
- Effective mesh size
- 1,382.6 ha
- Largest patch index
- 37.5%
- Power-law exponent α
- 1.70
Spatial clustering
Global Moran’s I = 0.248 (z = 3.3, p = 0.001). Hot-spot cells (Gi*, ≥95%): 8; cold-spot cells: 2.
| Top hot-spot cell | Polygons | Area (ha) | Gi* z |
|---|---|---|---|
| 5.75, 0.65 | 93 | 96 | 3.94 |
| 5.8, 0.65 | 99 | 169 | 3.56 |
| 5.75, 0.7 | 79 | 565 | 3.51 |
| 5.75, 0.75 | 36 | 21 | 3.30 |
| 5.8, 0.7 | 128 | 3,667 | 2.66 |
| 5.85, 0.65 | 4 | 1 | 2.49 |
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.