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ATLAS REPORT
Mangrove ecosystem report: Liberia
Generated 15 October 2026, 05:01 from live Atlas data
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Executive summary
Atlas holds 139,661 mapped features and 37,971 observations in 27 datasets. The mapped mangrove canopy covers 20,124 ha in 5,140 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 87.4% 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 | 5,140 | 20,124.1 | 100.0% | 3.92 |
Shannon evenness by area: 0.00
Fragmentation & landscape metrics
- Patches
- 5,140
- Mean / median / largest
- 3.92 / 0.178 / 2,038.5 ha
- Effective mesh size
- 517.8 ha
- Largest patch index
- 10.1%
- Power-law exponent α
- 1.60
Spatial clustering
Global Moran’s I = -0.088 (z = -1.5, p = 0.123). Hot-spot cells (Gi*, ≥95%): 1; cold-spot cells: 2.
| Top hot-spot cell | Polygons | Area (ha) | Gi* z |
|---|---|---|---|
| 6.75, -11.4 | 32 | 510 | 2.52 |
| 5, -9 | 5 | 43 | 1.66 |
| 6.75, -11.35 | 77 | 121 | 1.60 |
| 6.2, -10.5 | 44 | 128 | 1.59 |
| 4.95, -9 | 25 | 5 | 1.46 |
| 5.95, -10.05 | 8 | 2 | 1.44 |
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.