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ATLAS REPORT

Mangrove ecosystem report: Mauritania

Generated 15 October 2026, 09:19 from live Atlas data

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Executive summary

Atlas holds 78,752 mapped features and 37,972 observations in 25 datasets. The mapped mangrove canopy covers 219 ha in 67 polygons across 1 formation classes; Mangrove dominates with 100.0% of the area. The median patch is only 0.430 ha, while patches of 10 ha or more hold 72.9% 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

FormationPolygonsArea (ha)ShareMean patch (ha)
Mangrove67218.7100.0%3.26
Shannon evenness by area: 0.00

Fragmentation & landscape metrics

Patches
67
Mean / median / largest
3.26 / 0.430 / 63.5 ha
Effective mesh size
34.9 ha
Largest patch index
29.0%
Power-law exponent α
1.67

Spatial clustering

Global Moran’s I = 0.106 (z = 0.9, p = 0.373). Hot-spot cells (Gi*, ≥95%): 0; cold-spot cells: 0.

Top hot-spot cellPolygonsArea (ha)Gi* z
16.1, -16.451641.94
16.05, -16.522531.76
16.1, -16.512491.16
16.05, -16.55100.95
16.3, -16.4513350.53
16.3, -16.5530.53

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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