Atlas · Senegal
/
Reports
ATLAS REPORT
Mangrove ecosystem report: Senegal
Generated 15 October 2026, 02:45 from live Atlas data
EditPrint / PDF
Executive summary
Atlas holds 195,557 mapped features and 37,971 observations in 28 datasets. The mapped mangrove canopy covers 151,840 ha in 10,419 polygons across 1 formation classes; Mangrove dominates with 100.0% of the area. The median patch is only 0.175 ha, while patches of 10 ha or more hold 96.2% 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 | 10,419 | 151,840.1 | 100.0% | 14.57 |
Shannon evenness by area: 0.00
Fragmentation & landscape metrics
- Patches
- 10,419
- Mean / median / largest
- 14.57 / 0.175 / 6,776.4 ha
- Effective mesh size
- 2,138.0 ha
- Largest patch index
- 4.5%
- Power-law exponent α
- 1.55
Spatial clustering
Global Moran’s I = 0.298 (z = 8.0, p < 0.001). Hot-spot cells (Gi*, ≥95%): 34; cold-spot cells: 24.
| Top hot-spot cell | Polygons | Area (ha) | Gi* z |
|---|---|---|---|
| 12.75, -16.65 | 34 | 678 | 3.49 |
| 12.8, -16.65 | 111 | 1,168 | 3.04 |
| 14, -16.6 | 33 | 579 | 3.04 |
| 12.8, -16.7 | 11 | 1,292 | 2.94 |
| 12.7, -16.65 | 34 | 343 | 2.91 |
| 12.7, -16.7 | 12 | 1,960 | 2.86 |
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.