Atlas · Guinea-Bissau / Intelligence Centre
INTELLIGENCE CENTRE · GUINEA-BISSAU

Nature and climate intelligence, from the data to the decision

231,506 mapped features and 37,971 observations from 23 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 Guinea-Bissau.

All themes
Mapped mangrove
297,120 ha
12,944 polygons · 2020
Change since 1996
+17,415 ha
+6.3% net, 1996–2025
Datasets
23
231,506 features
Data quality score
97 / 100
55,235 geometries repaired
Provenance coverage
231,506
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
12,944
Median / mean patch
0.175 / 22.95 ha
Effective mesh size
2,179.4 ha
Largest patch index
2.4% of area
Patch-size exponent α
1.46
Species & formations

Spatial clustering

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

Moran’s I
0.152
z-score
6.7

Mangrove area is significantly clustered. 67 hot-spot and 36 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: Salt Marsh, Coastal Forests, Blue Carbon, Restoration Sites, Carbon Projects, Protected Areas & Landscapes, Land Use & Land Cover, People & Se...
HighGovernance
Licence terms to be confirmed for 9 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
41.1% of the 12,944 mapped polygons are under 0.1 ha, yet patches of 10 ha or more hold 97.4% of all mangrove area. Management and monitoring effort should focus on the l...
LowChange
Net gain of mangrove since 1996
Global Mangrove Watch maps 277,700 ha of mangrove in Guinea-Bissau in 1996 and 295,115 ha in 2025: a net gain of 17,415 ha (6.3%), about 601 ha per year. This is the net...
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 “Guinea-Bissau mangrove intelligence brief — 14 October 2026”

Datasets in Atlas

23 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 · 62,673 features

Global Mangrove Watch v4.1

Global Mangrove Watch (Aberystwyth University, soloEO, Wetlands International, UNEP-WCMC, JAXA) · 7 datasets · 93,668 features

WWF Kenya Sources: GIS Centre of Excellence

WWF Kenya · 9 datasets · 75,157 features

Fibre Cable Landing Stations
Roads, Rail & Infrastructure · v1
126
features
Rivers
Water & Catchments · v1
228
features
Power Plants (Power output MW)
Roads, Rail & Infrastructure · v1
642
features
Small airport
Roads, Rail & Infrastructure · v1
1,979
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 · 1 features

Seagrass (UNEP-WCMC): Guinea-Bissau
Seagrass · v1
1
features

UNDP project data (IATI Registry)

United Nations Development Programme (UNDP) · 1 datasets · 7 features

Community and nature projects (UNDP): Guinea-Bissau
Community Projects · v1
7
features

Data health

The ten lowest-scoring datasets and the local archive

Quality scorecard

Geometry, provenance, flags, duplicates, verification and licence

Seagrass (UNEP-WCMC): Guinea-Bissau
90
Community and nature projects (UNDP): Guinea-Bissau
90
Fibre Cable Landing Stations
95
Rivers
95
Power Plants (Power output MW)
95
Small airport
95
Districts
95
World Database on Protected Areas
95
Electricity Transmission Network
95
Irrigated Areas
95

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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