Atlas · Nigeria / Reports
ATLAS REPORT

Mangrove ecosystem report: Nigeria

Generated 15 October 2026, 09:20 from live Atlas data

EditPrint / PDF

Executive summary

Atlas holds 638,249 mapped features and 38,022 observations in 29 datasets. The mapped mangrove canopy covers 822,120 ha in 46,453 polygons across 1 formation classes; Mangrove dominates with 100.0% of the area. The median patch is only 0.089 ha, while patches of 10 ha or more hold 97.7% 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)
Mangrove46,453822,120.2100.0%17.70
Shannon evenness by area: 0.00

Fragmentation & landscape metrics

Patches
46,453
Mean / median / largest
17.70 / 0.089 / 36,185.5 ha
Effective mesh size
8,706.2 ha
Largest patch index
4.4%
Power-law exponent α
1.52

Spatial clustering

Global Moran’s I = 0.224 (z = 11.1, p < 0.001). Hot-spot cells (Gi*, ≥95%): 98; cold-spot cells: 58.

Top hot-spot cellPolygonsArea (ha)Gi* z
4.45, 6.15761,0803.26
4.5, 6.2524,7123.21
4.45, 6.052934103.11
5.6, 5.451528893.09
4.45, 6.1492,0373.07
4.7, 6.851401,0283.07

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.
Guest preview · 131s left Explore until the timer ends. Then you’ll be asked to log in or create an account (about two minutes) to keep going.
Ask Atlas