Tanzania National Parks Chief Conservation Commissioner, Musa Nasoro Kuji
At dawn in Tanzania’s smallest national park, the forested slopes above Lake Tanganyika come alive with the deep, resonant calls of chimpanzees.
In Gombe National Park, mist rises through ancient fig trees and tangled vines as pant-hoots echo across the hills, marking another day in one of Africa’s most closely studied wildlife sanctuaries.
These are the descendants of the chimpanzees made famous in the 1960s by primatologist Jane Goodall, whose pioneering work in Gombe reshaped global understanding of animal behavior and challenged long-held assumptions about the divide between humans and other primates.
Today, the same forest is home to a population that is fighting for survival under mounting ecological pressure.
Despite disease outbreaks, habitat constraints and human-induced stress, conservation authorities say the chimpanzees are showing signs of resilience.
Veterinary experts from Tanzania National Parks Authority report that the population, though small and vulnerable, continues to reproduce and adapt.
“Tangible evidence shows the population is still resilient,” said TANAPA veterinary expert Dr. Jane Mwandupe, noting continued births and ongoing health surveillance efforts inside the park.
Gombe’s global significance far outweighs its size. Covering just 33.6 square kilometres, it remains one of the smallest national parks in Africa, yet it holds an outsized place in science and conservation history.
It is also uniquely positioned along the shores of Lake Tanganyika, where steep escarpments and dense forest create a narrow and fragile habitat.
Recent monitoring indicates that about 77 chimpanzees now remain in the park, mainly within the Mitumba and Kasekela communities.
This marks a decline from around 90 individuals a decade ago, reflecting the ongoing fragility of an isolated population.
Population records show fluctuations in recent years, with numbers peaking at about 94 individuals in 2017 before gradually declining to the current level.
Conservationists say the trend underscores the vulnerability of a small population confined to a restricted ecological corridor.
Disease has been the most persistent threat. According to Dr. Mwandupe, viral and respiratory infections have had a severe impact on certain chimpanzee groups, including the near collapse of the Kalande community.
Some individuals from that group have since integrated into neighbouring communities, leaving behind what was once a stable social unit.
Between 2020 and 2024, researchers recorded around 20 chimpanzee deaths within and around the park, most linked to infectious disease, alongside cases of inter-group conflict and natural causes.
“Infectious disease remains the leading cause of mortality,” Dr. Mwandupe said, adding that continuous monitoring has helped improve early detection and response.
However, the population has also shown signs of recovery. Over the same period, researchers recorded 21 births. While the numbers may appear small, scientists say each birth carries significant weight in a species that reproduces slowly and invests heavily in offspring care.
“Every infant matters because each one contributes directly to the long-term survival of this population,” Dr. Mwandupe said.
Each newborn chimpanzee clinging to its mother represents not only continuity, but also a fragile link in a long evolutionary chain that has survived decades of ecological pressure.
Conservation efforts have intensified in response. TANAPA, working closely with the Jane Goodall Institute and other partners, has expanded disease surveillance, strengthened habitat monitoring and reinforced strict tourism protocols aimed at reducing human-wildlife disease transmission.
Rangers and researchers now conduct daily monitoring of chimpanzee health and behaviour. Fire prevention measures have also been improved, while ecological assessments continue across the park’s limited forest cover.
Beyond the park boundaries, attention has turned to the critical Gombe–Kagunga corridor, a narrow stretch of village forest that links fragmented habitats.
The corridor supports a small number of chimpanzees and is vital for genetic exchange between isolated groups.
Without it, conservationists warn, the population could face increased inbreeding and long-term decline.
TANAPA Chief Conservation Commissioner Juma Nasoro Kuji said protecting habitat connectivity is now a national priority.
“The Gombe–Kagunga corridor is essential for the future survival of chimpanzees in this landscape,” Kuji said. “Restoring connectivity between habitats is a key conservation objective.”
In May 2025, authorities carried out an operation targeting illegal encroachment in the corridor, removing dozens of structures and livestock enclosures in an effort to restore ecological integrity.
The operation also led to arrests, reflecting the government’s broader push to protect critical wildlife habitats.
At the same time, conservationists are increasingly relying on community engagement as a long-term strategy. Programs promoting sustainable livelihoods, including beekeeping and environmental education, are helping reduce dependence on forest resources.
Five local community groups now manage around 240 beehives in villages surrounding the park, providing alternative income while supporting conservation goals.
“Conservation cannot succeed without local communities,” Kuji said. “We are focusing on approaches that improve livelihoods while protecting natural resources.”
The importance of Gombe extends beyond conservation. It remains one of the most iconic field sites in the history of primatology.
It was here that Jane Goodall first documented chimpanzees using tools, a discovery that transformed scientific understanding of animal intelligence and culture.
Since then, decades of research have revealed complex social structures, emotional depth, cooperation, conflict and cultural variation among chimpanzee groups, placing them among the most closely studied non-human species in the world.
Today, Gombe continues to attract researchers and visitors from across the globe. Tourism in the park offers an intimate wildlife experience, where observers can witness grooming rituals, maternal care and social interactions in a dense forest setting unlike the open savannah landscapes found elsewhere in Tanzania.
For TANAPA and its partners, the chimpanzees are more than a tourist attraction. They are a symbol of conservation success and fragility at the same time, drawing attention to the challenges facing small, isolated populations in a rapidly changing world.
As climate change, habitat fragmentation and disease continue to reshape ecosystems, Gombe has become a living test case for whether endangered primate populations can survive in restricted environments.
For now, the answer remains cautiously hopeful. The population is small, the threats are real, and the margins for survival are narrow. Yet births continue, communities are adapting, and conservation efforts are intensifying.
On the forested edge of Lake Tanganyika, the morning calls of chimpanzees still rise above the canopy. In those calls, scientists and conservationists hear both warning and resilience — a reminder that survival in Gombe is not guaranteed, but still possible.
