Atlas · São Tomé and Principe / Recommendations
INTELLIGENCE

Recommendations

Insights computed from Atlas’ own data by a transparent rules engine. Each one shows its evidence, the calculation behind it and how confident Atlas is.

Needs attention
2
High priority
Worth acting on
2
Medium priority
For awareness
0
Low priority
Last computed 9 hours ago
HighData_gapEVIDENCEConfidence 100%

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 & Settlements, Wildlife & Habitats, Fire & Climate, Farming & Livelihoods, Mining, Oil & Licences, Surveys & Field Data. Seagrass and salt marsh would come from UNEP-WCMC global datasets; carbon projects from the Verra and Gold Standard registries; community projects from partner programmes.

Suggested action: Ingest the planned sources listed in the Source Catalogue, starting with Global Mangrove Watch, UNEP-WCMC seagrass and salt marsh, and the carbon registries.
Evidence and method
Calculation
Modules with zero mapped features.
Sources
HighGovernanceEVIDENCEConfidence 100%

Licence terms to be confirmed for 6 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 redistribution rights.

Suggested action: Request written permission from WWF Kenya, KMFRI and KFS for redistribution and derivative products.
Evidence and method
datasets without licence
6.00
Calculation
Datasets whose licence status is "unspecified by publisher".
Sources
MediumFragmentationCALCULATEDConfidence 90%

Most polygons are very small, but most area sits in large stands

35.7% of the 14 mapped polygons are under 0.1 ha, yet patches of 10 ha or more hold 76.0% of all mangrove area. Management and monitoring effort should focus on the large stands, while the small-patch tail needs checking against satellite imagery.

Suggested action: Prioritise field verification of large stands; review the sub-0.1 ha tail for mapping artefacts.
Evidence and method
polygons
14.00
tiny pct
35.70
area in ge10ha pct
76.00
Calculation
Counts and sums of geodesic polygon areas grouped by size class.
Sources
lamu-mangroves-species-formation-2019
MediumChangeCALCULATEDConfidence 80%

Net loss of mangrove since 1996

Global Mangrove Watch maps 65 ha of mangrove in São Tomé and Principe in 1996 and 65 ha in 2025: a net loss of 1 ha (-1.4%), about 0 ha per year. This is the net balance of total mapped area; gains and losses inside the country can cancel out, so real loss may be larger.

Suggested action: Overlay consecutive epochs to locate where the losses occurred and check them against pressures such as clearing, ports and aquaculture.
Evidence and method
last ha
65.00
net pct
-1.40
first ha
65.00
last year
2,025.00
first year
1,996.00
Calculation
Sum of geodesic polygon areas per epoch, compared across years (Global Mangrove Watch v3.0, CC BY 4.0).
Sources
gmw-v4-1996-st
Guest preview · 175s left Explore until the timer ends. Then you’ll be asked to log in or create an account (about two minutes) to keep going.
Ask Atlas