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ATLAS REPORT

Mangrove ecosystem report: Angola

Generated 15 October 2026, 14:46 from live Atlas data

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Executive summary

Atlas holds 1,485,178 mapped features and 350,076 observations in 99 datasets. The mapped mangrove canopy covers 29,225 ha in 2,498 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 95.4% 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

FormationPolygonsArea (ha)ShareMean patch (ha)
Mangrove2,49829,224.6100.0%11.70
Shannon evenness by area: 0.00

Fragmentation & landscape metrics

Patches
2,498
Mean / median / largest
11.70 / 0.178 / 7,898.8 ha
Effective mesh size
3,305.4 ha
Largest patch index
27.0%
Power-law exponent α
1.63

Spatial clustering

Global Moran’s I = 0.103 (z = 1.4, p = 0.151). Hot-spot cells (Gi*, ≥95%): 10; cold-spot cells: 0.

Top hot-spot cellPolygonsArea (ha)Gi* z
-6.05, 12.651941722.50
-6.2, 12.3154872.42
-6.05, 12.6518152.39
-6.1, 12.61961122.19
-6.1, 12.651886822.13
-9.3, 13.15311,7882.11

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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