QGMI developed a road construction project in Ghana, supported by Ramboll and Kwame Nkrumah University of Science and Technology (KNUST). To meet local environmental requirements, the team used NatureMetrics’ eDNA technology to survey biodiversity along the Bolgatanga road. From just ten water samples, the survey detected 59 species, including the Vulnerable Senegal flapshell turtle. The data contributed to the project’s environmental and social impact assessment (ESIA) and its Biodiversity Action Plan (BAP). The project set a high standard for biodiversity reporting and sustainable construction in the region.

QGMI needed to comply with local ESIA regulations. Its goals were to reduce risks to local wildlife and to improve habitats to support species diversity. Gathering site-based biodiversity data was difficult, particularly during Ghana’s wet season, when accessing sites was a challenge. The project needed a practical way to collect reliable data whatever the conditions.

NatureMetrics worked with QGMI, Ramboll and KNUST to overcome these challenges:

• Training: NatureMetrics trained academics from KNUST to carry out eDNA fieldwork during the wet season.
• Sampling: The team collected ten water samples along the Bolgatanga road, alongside a fish netting survey.
• Services: NatureMetrics supplied field eDNA kits, swab kits, DNA barcoding services and full DNA analysis and reporting.

Just ten water samples detected 59 species: 35 fish, 11 birds, 7 amphibians, 5 mammals and 1 reptile. Among them was the Senegal flapshell turtle, which the IUCN lists as Vulnerable.

DNA analysis also corrected a field identification. The team initially believed they had found a Critically Endangered Nubian flapshell turtle, and DNA results confirmed it was the Senegal flapshell. Accurate, DNA-based monitoring like this is essential at sites with such a wide range of species.

The project shows how eDNA can change the way infrastructure projects report on wildlife:

• Year-round reporting: The fast, cost-effective method allowed reporting in both wet and dry seasons, helping to keep the construction timeline on track.
• Data for compliance: The survey produced data on 59 species with minimal training and technical supervision. That data was crucial for QGMI’s ESIA and its Biodiversity Action Plan.
• Ongoing monitoring: Monitoring now continues across the road project’s lifecycle to track impacts on local habitats and species. As part of its Biodiversity Action Plan, QGMI collected a further ten water eDNA samples during the dry season, among other biodiversity actions.

The project shows how innovation in construction can deliver lasting positive outcomes for both nature and infrastructure.