Nature and climate intelligence, from the data to the decision
319,264 mapped features and 38,648 observations from 44 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 Madagascar.
The seascape at a glance
Live from Atlas’ own databaseMangrove formations map
Pan and zoom; click a polygon for its area and source
Area by formation
Share of mapped hectares
Landscape science
Computed, reproducible measures (see Methodologies)Fragmentation
How broken up is the canopy?
- Patches
- 26,508
- Median / mean patch
- 0.172 / 9.87 ha
- Effective mesh size
- 956.6 ha
- Largest patch index
- 1.9% of area
- Patch-size exponent α
- 1.54
Spatial clustering
Moran’s I and Getis-Ord Gi* on a 5 km grid
Mangrove area is significantly clustered. 78 hot-spot and 31 cold-spot cells.
Spatial analysisThemes
Where Atlas has data, and where it is still emptyWhat the analysis says
Top recommendations from the intelligence engineAsk the analyst
Plain-English questions, answered with real calculations
Datasets in Atlas
44 datasets from 6 sources — grouped by where they come fromGlobal Mangrove Watch v3.0
Global Mangrove Watch (Aberystwyth University, soloEO, Wetlands International, UNEP-WCMC, JAXA) · 5 datasets · 74,709 features
| Global Mangrove Watch: mangrove extent 2020, Madagascar Mangroves · v1 |
13,819 features | |
| Global Mangrove Watch: mangrove extent 1996, Madagascar Mangroves · v1 |
19,011 features | |
| Global Mangrove Watch: mangrove extent 2007, Madagascar Mangroves · v1 |
15,178 features | |
| Global Mangrove Watch: mangrove extent 2010, Madagascar Mangroves · v1 |
13,081 features | |
| Global Mangrove Watch: mangrove extent 2015, Madagascar Mangroves · v1 |
13,620 features |
Global Mangrove Watch v4.1
Global Mangrove Watch (Aberystwyth University, soloEO, Wetlands International, UNEP-WCMC, JAXA) · 7 datasets · 146,724 features
| Global Mangrove Watch v4.1: mangrove extent 2025, Madagascar Mangroves · v1 |
31,144 features | |
| Global Mangrove Watch v4.1: mangrove extent 2020, Madagascar Mangroves · v1 |
26,508 features | |
| Global Mangrove Watch v4.1: mangrove extent 2015, Madagascar Mangroves · v1 |
21,587 features | |
| Global Mangrove Watch v4.1: mangrove extent 2010, Madagascar Mangroves · v1 |
17,782 features | |
| Global Mangrove Watch v4.1: mangrove extent 2005, Madagascar Mangroves · v1 |
17,600 features | |
| Global Mangrove Watch v4.1: mangrove extent 2000, Madagascar Mangroves · v1 |
16,784 features | |
| Global Mangrove Watch v4.1: mangrove extent 1996, Madagascar Mangroves · v1 |
15,319 features |
WWF Kenya Sources: GIS Centre of Excellence
WWF Kenya · 28 datasets · 97,781 features
| Mahafaly Roads, Rail & Infrastructure · v1 |
1 features | |
| Madagascar Protected Areas & Landscapes · v1 |
1 features | |
| Africa_Water_Towers Water & Catchments · v1 |
7 features | |
| EAC_MZQ_ForestProgramme_Countries Protected Areas & Landscapes · v1 |
8 features | |
| flr_9 Protected Areas & Landscapes · v1 |
9 features | |
| polygons Protected Areas & Landscapes · v1 |
11 features | |
| Biodiversity Hotspots Biodiversity · v1 |
12 features | |
| FLRi Countries Protected Areas & Landscapes · v1 |
13 features |
Berkeley Voluntary Registry Offsets Database (v2026-08)
Berkeley Carbon Trading Project, University of California, Berkeley · 1 datasets · 8 features
| Carbon projects: Madagascar Carbon Projects · v1 |
8 features |
UNEP-WCMC global seagrass and saltmarsh layers
UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC) and Short FT · 2 datasets · 29 features
| Seagrass (UNEP-WCMC): Madagascar Seagrass · v1 |
25 features | |
| Salt marsh (UNEP-WCMC): Madagascar Salt Marsh · v1 |
4 features |
UNDP project data (IATI Registry)
United Nations Development Programme (UNDP) · 1 datasets · 13 features
| Community and nature projects (UNDP): Madagascar Community Projects · v1 |
13 features |
Data health
The ten lowest-scoring datasets and the local archiveQuality scorecard
Geometry, provenance, flags, duplicates, verification and licence
| Carbon projects: Madagascar | 90 | |
| Seagrass (UNEP-WCMC): Madagascar | 90 | |
| Salt marsh (UNEP-WCMC): Madagascar | 90 | |
| Community and nature projects (UNDP): Madagascar | 90 | |
| Mahafaly | 95 | |
| Madagascar | 95 | |
| Africa_Water_Towers | 95 | |
| EAC_MZQ_ForestProgramme_Countries | 95 | |
| flr_9 | 95 | |
| polygons | 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.