- Client
- Nature+ and Rougier
- Sector
- Forestry & biodiversity credits
- Location
- TRIDOM landscape, Ogooué-Ivindo, Gabon
- Year
- 2025
An MRV-ready biodiversity baseline for a biodiversity credit project in Gabon
We gave Nature+ and Rougier a rigorous, repeatable baseline to underpin biodiversity credits, built on population estimates rather than simple species lists.
Rainforest in the wider TRIDOM landscape. © iStock
851 km²
forest concession surveyed
233
species identified across nine animal classes
5,055
camera-trap days
The challenge
Nature+ and Rougier are setting up wildlife management and monitoring across 851 km² of forest concession in the TRIDOM landscape. To access biodiversity credits and green finance, they needed a rigorous, repeatable baseline with numbers that can be verified, not simply a list of species present.
What we did
We stratified sampling across reforested areas, mature forest and natural regeneration. Between June and September 2025 we ran 56 camera traps (5,055 camera-trap days) and seven acoustic stations, and collected 23 terrestrial and aquatic eDNA samples, analysed with ETH Zurich. We then modelled density and abundance, with uncertainty, for priority species.
The outcome
The baseline identified 233 species, including 62 mammals, 102 birds and 52 fish. Nature+ and Rougier now have the first concession-scale, MRV-ready reference point for the project. It includes modelled population estimates, with uncertainty, for priority species. This gives a defensible benchmark for measuring future gains and supports access to biodiversity credits and green finance. All records are held in NatureCube, giving the project a single, traceable evidence base for verification.
