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ATLAS REPORT

Mangrove ecosystem report: Senegal

Generated 15 October 2026, 02:45 from live Atlas data

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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

FormationPolygonsArea (ha)ShareMean patch (ha)
Mangrove10,419151,840.1100.0%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 cellPolygonsArea (ha)Gi* z
12.75, -16.65346783.49
12.8, -16.651111,1683.04
14, -16.6335793.04
12.8, -16.7111,2922.94
12.7, -16.65343432.91
12.7, -16.7121,9602.86

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.
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