Rwanda is pioneering the use of environmental DNA (eDNA) to modernize biodiversity monitoring, bringing high-precision genetic science into one of Africa’s most challenging conservation landscapes. In Volcanoes National Park, researchers are using eDNA technology to detect the presence of iconic wildlife, including mountain gorillas, golden monkeys, amphibians, birds and other mammals, without relying solely on direct sightings or physical tracking
Environmental DNA works by analysing genetic material that animals naturally leave behind in their surroundings. Tiny traces of DNA from fur, skin cells, saliva, urine and faeces accumulate in soil, rivers, streams and wetlands. Scientists collect environmental samples and analyse them in laboratories to determine which species have recently occupied an area, offering a powerful new tool for biodiversity assessment
The initiative is being implemented by the African Wildlife Foundation in partnership with the Government of Rwanda and conservation organisations, with the goal of creating a more comprehensive inventory of the country’s wildlife. The project aims to improve ecological monitoring while supporting long-term conservation planning and sustainable management of protected ecosystems
The technology is particularly valuable in Volcanoes National Park, where dense forests, steep volcanic terrain and difficult weather conditions make conventional wildlife surveys time-consuming and often incomplete. Although ranger patrols, field observations and camera traps remain essential components of wildlife monitoring, eDNA significantly expands survey coverage by detecting species that are elusive, nocturnal or rarely encountered during field observations
According to Patrick Nsabimana, Rwanda Country Manager for the African Wildlife Foundation, ecological monitoring forms the foundation of effective habitat conservation. He explained that eDNA was introduced not to replace existing monitoring methods but to strengthen them by providing an additional layer of scientific evidence for conservation decision-making
One of the technology’s greatest advantages is its efficiency and scalability. Researchers note that a single water or soil sample collected from rivers, ponds or wetlands can reveal the presence of multiple species simultaneously. Deogratias Tuyisingize of the Dian Fossey Gorilla Fund explained that one sampling kit can assess amphibians, mammals and birds in a single analysis, dramatically reducing the time and re
This capability is particularly significant for Rwanda and other African countries, where collecting ecological data across remote and mountainous habitats is both expensive and labour-intensive. By lowering the cost of large-scale biodiversity monitoring, eDNA has the potential to make conservation programmes more efficient and accessible
Beyond wildlife conservation, the project also highlights growing opportunities for investment in biodiversity science and environmental technology. Development partners increasingly view eDNA as a catalyst for building scientific infrastructure, including laboratory capacity, genetic reference databases, digital biodiversity platforms and regional research partnerships that could eventually support conservation efforts across East Africa
Improved biodiversity data can also strengthen protected area management by helping governments respond more effectively to habitat loss, climate change and increasing human pressures on ecosystems. Better information allows conservation managers to make more informed decisions about species protection, habitat restoration and ecosystem resilience
Despite its promise, researchers caution that eDNA has important limitations. James Munyawera of the Dian Fossey Gorilla Fund notes that while eDNA can confirm whether a species is present in an ecosystem, it cannot accurately estimate population size or determine the precise location of individual animals. Genetic material can be transported by flowing water or remain in the environment after animals have moved elsewhere, making interpretation more complex
For this reason, scientists emphasise that eDNA should be viewed as a complementary tool rather than a replacement for traditional monitoring methods such as field surveys, ranger observations and camera trapping. Combining multiple approaches provides the most reliable understanding of biodiversity and ecosystem health
The initiative also exposes a broader structural challenge facing biodiversity research across Africa: the limited availability of comprehensive genetic reference databases. Without extensive DNA libraries for African species, accurately identifying organisms from environmental samples becomes more difficult. To address this gap, research teams in Rwanda are developing regional genetic databases while training park rangers, scientists and local communities in eDNA sample collection and biodiversity monitoring techniques.
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As Rwanda’s pilot programme progresses, it is creating a compelling case for increased investment in low-impact conservation technologies, laboratory services and biodiversity data infrastructure. Conservation organisations, governments and international donors will be closely watching whether eDNA can evolve from a successful pilot project in Volcanoes National Park into a regional standard for biodiversity monitoring, ecosystem management and conservation finance across East Africa
