Nature and climate intelligence, from the data to the decision
4,378,279 mapped features and 77,355 observations from 225 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 Tanzania.
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
- 7,458
- Median / mean patch
- 0.178 / 14.95 ha
- Effective mesh size
- 941.2 ha
- Largest patch index
- 4.0% of area
- Patch-size exponent α
- 1.46
Spatial clustering
Moran’s I and Getis-Ord Gi* on a 5 km grid
Mangrove area is significantly clustered. 30 hot-spot and 8 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
225 datasets from 7 sources — grouped by where they come fromGlobal Mangrove Watch v3.0
Global Mangrove Watch (Aberystwyth University, soloEO, Wetlands International, UNEP-WCMC, JAXA) · 5 datasets · 39,682 features
| Global Mangrove Watch: mangrove extent 2020, Tanzania Mangroves · v1 |
7,879 features | |
| Global Mangrove Watch: mangrove extent 1996, Tanzania Mangroves · v1 |
8,046 features | |
| Global Mangrove Watch: mangrove extent 2007, Tanzania Mangroves · v1 |
8,419 features | |
| Global Mangrove Watch: mangrove extent 2010, Tanzania Mangroves · v1 |
7,750 features | |
| Global Mangrove Watch: mangrove extent 2015, Tanzania Mangroves · v1 |
7,588 features |
Global Mangrove Watch v4.1
Global Mangrove Watch (Aberystwyth University, soloEO, Wetlands International, UNEP-WCMC, JAXA) · 7 datasets · 51,118 features
| Global Mangrove Watch v4.1: mangrove extent 2025, Tanzania Mangroves · v1 |
10,455 features | |
| Global Mangrove Watch v4.1: mangrove extent 2020, Tanzania Mangroves · v1 |
7,458 features | |
| Global Mangrove Watch v4.1: mangrove extent 2015, Tanzania Mangroves · v1 |
6,895 features | |
| Global Mangrove Watch v4.1: mangrove extent 2010, Tanzania Mangroves · v1 |
6,377 features | |
| Global Mangrove Watch v4.1: mangrove extent 2005, Tanzania Mangroves · v1 |
6,602 features | |
| Global Mangrove Watch v4.1: mangrove extent 2000, Tanzania Mangroves · v1 |
6,784 features | |
| Global Mangrove Watch v4.1: mangrove extent 1996, Tanzania Mangroves · v1 |
6,547 features |
WWF Kenya Sources: GIS Centre of Excellence
WWF Kenya · 200 datasets · 441,016 features
| Ruvuma Landscape Protected Areas & Landscapes · v1 |
1 features | |
| Tanzania +EEZ Water & Catchments · v1 |
1 features | |
| Selous WHS Protected Areas & Landscapes · v1 |
1 features | |
| Wetlands (River) Water & Catchments · v1 |
1 features | |
| Lindi-Mtwara-Ruvuma Roads, Rail & Infrastructure · v1 |
1 features | |
| SAGCOT Region Boundaries & Reference · v1 |
1 features | |
| Ruaha Sub-Basin Water & Catchments · v1 |
1 features | |
| Mbarali Catchment Water & Catchments · v1 |
1 features |
Berkeley Voluntary Registry Offsets Database (v2026-08)
Berkeley Carbon Trading Project, University of California, Berkeley · 1 datasets · 15 features
| Carbon projects: Tanzania Carbon Projects · v1 |
15 features |
UNEP-WCMC global seagrass and saltmarsh layers
UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC) and Short FT · 2 datasets · 154 features
| Seagrass (UNEP-WCMC): Tanzania Seagrass · v1 |
153 features | |
| Salt marsh (UNEP-WCMC): Tanzania Salt Marsh · v1 |
1 features |
UNDP project data (IATI Registry)
United Nations Development Programme (UNDP) · 1 datasets · 19 features
| Community and nature projects (UNDP): Tanzania Community Projects · v1 |
19 features |
WWF Kenya GIS Centre of Excellence — full server mirror
WWF Kenya · 9 datasets · 3,846,275 features
| Fences Reference & context · v1 |
148,597 features | |
| LULC 2025 BAU Min. Scenario Reference & context · v1 |
181,238 features | |
| Elephant Track Biodiversity · v1 |
276,722 features | |
| LULC 2025 GE Scenario Reference & context · v1 |
329,368 features | |
| LULC 2025-GE Scenario Reference & context · v1 |
336,993 features | |
| LULC 2025-BAU Min. Scenario Reference & context · v1 |
342,044 features | |
| LULC 2025 BAU Max. Scenario Reference & context · v1 |
525,756 features | |
| LULC 2025-BAU Max. Scenario Reference & context · v1 |
736,076 features |
Data health
The ten lowest-scoring datasets and the local archiveQuality scorecard
Geometry, provenance, flags, duplicates, verification and licence
| Carbon projects: Tanzania | 90 | |
| Seagrass (UNEP-WCMC): Tanzania | 90 | |
| Salt marsh (UNEP-WCMC): Tanzania | 90 | |
| Community and nature projects (UNDP): Tanzania | 90 | |
| Ruvuma Landscape | 95 | |
| Tanzania +EEZ | 95 | |
| Selous WHS | 95 | |
| Wetlands (River) | 95 | |
| Lindi-Mtwara-Ruvuma | 95 | |
| SAGCOT Region | 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.