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ATLAS REPORT

Mangrove ecosystem report: Comoros

Generated 15 October 2026, 03:58 from live Atlas data

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Executive summary

Atlas holds 58,931 mapped features and 38,022 observations in 23 datasets. The mapped mangrove canopy covers 126 ha in 53 polygons across 1 formation classes; Mangrove dominates with 100.0% of the area. The median patch is only 0.961 ha, while patches of 10 ha or more hold 25.8% 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)
Mangrove53126.1100.0%2.38
Shannon evenness by area: 0.00

Fragmentation & landscape metrics

Patches
53
Mean / median / largest
2.38 / 0.961 / 21.5 ha
Effective mesh size
7.8 ha
Largest patch index
17.0%
Power-law exponent α
1.82

Spatial clustering

Global Moran’s I = 0.239 (z = 1.2, p = 0.242). Hot-spot cells (Gi*, ≥95%): 1; cold-spot cells: 0.

Top hot-spot cellPolygonsArea (ha)Gi* z
-12.4, 43.713492.37
-12.35, 43.654141.41
-12.4, 43.65261.41
-12.4, 43.75161.38
-12.2, 44.27210.88
-12.25, 44.25130.88

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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