Atlas · Djibouti
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ATLAS REPORT
Mangrove ecosystem report: Djibouti
Generated 15 October 2026, 08:22 from live Atlas data
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Executive summary
Atlas holds 66,847 mapped features and 38,022 observations in 25 datasets. The mapped mangrove canopy covers 555 ha in 82 polygons across 1 formation classes; Mangrove dominates with 100.0% of the area. The median patch is only 0.875 ha, while patches of 10 ha or more hold 78.7% 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
| Formation | Polygons | Area (ha) | Share | Mean patch (ha) |
|---|---|---|---|---|
| Mangrove | 82 | 554.5 | 100.0% | 6.76 |
Shannon evenness by area: 0.00
Fragmentation & landscape metrics
- Patches
- 82
- Mean / median / largest
- 6.76 / 0.875 / 205.2 ha
- Effective mesh size
- 105.1 ha
- Largest patch index
- 37.0%
- Power-law exponent α
- 1.63
Spatial clustering
Global Moran’s I = -0.337 (z = -1.0, p = 0.341). Hot-spot cells (Gi*, ≥95%): 0; cold-spot cells: 0.
| Top hot-spot cell | Polygons | Area (ha) | Gi* z |
|---|---|---|---|
| 12.15, 43.4 | 15 | 239 | 1.82 |
| 12.4, 43.3 | 9 | 27 | 0.31 |
| 12.45, 43.3 | 9 | 30 | 0.14 |
| 12.45, 43.25 | 2 | 12 | 0.14 |
| 11.5, 43.15 | 3 | 1 | -0.31 |
| 11.7, 43.2 | 7 | 34 | -0.33 |
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.