Atlas · The Gambia / Intelligence Centre
INTELLIGENCE CENTRE · THE GAMBIA

Nature and climate intelligence, from the data to the decision

84,775 mapped features and 37,971 observations from 21 datasets, harmonised to one set of units, with every number traceable to its source.

Explore Atlas by theme

Mangroves are where Atlas starts. The same platform holds the pressures, places and projects around them for The Gambia.

All themes
Mapped mangrove
70,792 ha
3,090 polygons · 2020
Change since 1996
+8,459 ha
+13.5% net, 1996–2025
Datasets
21
84,775 features
Data quality score
97 / 100
55,235 geometries repaired
Provenance coverage
84,775
Records traceable to source

The seascape at a glance

Live from Atlas’ own database

Mangrove formations map

Pan and zoom; click a polygon for its area and source

Area by formation

Share of mapped hectares

Mangrove · 100.0%

Landscape science

Computed, reproducible measures (see Methodologies)

Fragmentation

How broken up is the canopy?

Patches
3,090
Median / mean patch
0.174 / 22.91 ha
Effective mesh size
2,866.7 ha
Largest patch index
14.5% of area
Patch-size exponent α
1.49
Species & formations

Spatial clustering

Moran’s I and Getis-Ord Gi* on a 5 km grid

Moran’s I
0.011
z-score
0.4

Mangrove area is not significantly clustered. 13 hot-spot and 6 cold-spot cells.

Spatial analysis

Mangrove area by year

Global Mangrove Watch, hectares

Themes

Where Atlas has data, and where it is still empty

What the analysis says

Top recommendations from the intelligence engine
HighData_gap
13 of 9 themes have no data yet
Atlas holds no records for: Seagrass, Coastal Forests, Blue Carbon, Restoration Sites, Carbon Projects, Protected Areas & Landscapes, Land Use & Land Cover, People & Sett...
HighGovernance
Licence terms to be confirmed for 7 datasets
Licence terms are being confirmed with the publisher. Atlas holds the data for scientific and internal use and shows the original attribution, but cannot grant bulk redis...
MediumFragmentation
Most polygons are very small, but most area sits in large stands
39.8% of the 3,090 mapped polygons are under 0.1 ha, yet patches of 10 ha or more hold 97.6% of all mangrove area. Management and monitoring effort should focus on the la...
LowChange
Net gain of mangrove since 1996
Global Mangrove Watch maps 62,776 ha of mangrove in The Gambia in 1996 and 71,236 ha in 2025: a net gain of 8,459 ha (13.5%), about 292 ha per year. This is the net balan...
All recommendations

Ask the analyst

Plain-English questions, answered with real calculations

See how it works
Latest brief: 4 computed insights: 2 need attention, 1 are worth acting on. Read “The Gambia mangrove intelligence brief — 14 October 2026”

Datasets in Atlas

21 datasets from 5 sources — grouped by where they come from

Global Mangrove Watch v3.0

Global Mangrove Watch (Aberystwyth University, soloEO, Wetlands International, UNEP-WCMC, JAXA) · 5 datasets · 12,654 features

Global Mangrove Watch v4.1

Global Mangrove Watch (Aberystwyth University, soloEO, Wetlands International, UNEP-WCMC, JAXA) · 7 datasets · 22,362 features

WWF Kenya Sources: GIS Centre of Excellence

WWF Kenya · 7 datasets · 49,745 features

Fibre Cable Landing Stations
Roads, Rail & Infrastructure · v1
126
features
Power Plants (Power output MW)
Roads, Rail & Infrastructure · v1
642
features
Dams
Roads, Rail & Infrastructure · v1
2,586
features
Districts
Boundaries & Reference · v1
6,099
features
World Database on Protected Areas
Biodiversity · v1
7,438
features
Electricity Transmission Network
Roads, Rail & Infrastructure · v1
9,759
features
Irrigated Areas
Water & Catchments · v1
23,095
features

UNEP-WCMC global seagrass and saltmarsh layers

UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC) and Short FT · 1 datasets · 2 features

Salt marsh (UNEP-WCMC): The Gambia
Salt Marsh · v1
2
features

UNDP project data (IATI Registry)

United Nations Development Programme (UNDP) · 1 datasets · 12 features

Community and nature projects (UNDP): The Gambia
Community Projects · v1
12
features

Data health

The ten lowest-scoring datasets and the local archive

Quality scorecard

Geometry, provenance, flags, duplicates, verification and licence

Salt marsh (UNEP-WCMC): The Gambia
90
Community and nature projects (UNDP): The Gambia
90
Fibre Cable Landing Stations
95
Power Plants (Power output MW)
95
Dams
95
Districts
95
World Database on Protected Areas
95
Electricity Transmission Network
95
Irrigated Areas
95
Global Mangrove Watch: mangrove extent 2020, The Gambia
100

Local archive

Atlas runs from its own copy

Last import
14 Oct 2026, 15:38
Snapshots kept
1
Units
ha · m · % · UTC · WGS 84
Sources online?
Not needed. Atlas serves everything from its own database.
Full data-quality report
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