Gorillas

Gorillas exhibit a range of behaviors and emotions that are reminiscent of human traits, including expressions of joy and sorrow. Gorillas possess 98.6% of their genetic code in common with humans, establishing them as our closest relatives following chimpanzees and bonobos. Gorillas, the largest of the great apes, are gigantic creatures characterized by their broad chests and shoulders, large hands resembling those of humans, and small eyes positioned within their hairless faces. The eastern and western gorilla species inhabit equatorial Africa, divided by approximately 560 miles of Congo Basin forest.

Each has a subspecies for the lowlands and the uplands. Gorillas usually stay in family groups ranging from five to ten individuals, though these groups can expand to include two or even over fifty members. Leadership is often provided by a dominant adult male, known as a silverback, who may maintain his role for many years, potentially even decades. The relationship between the silverback and his females constitutes the foundation of gorilla social behavior. Females reach sexual maturity at approximately seven or eight years of age; however, they typically do not start breeding until a few years thereafter. Male individuals reach maturity at a later age.

Upon reaching maturity, a female typically produces a single offspring every four to six years, resulting in a total of three to four throughout her lifespan. The limited reproductive rate poses significant challenges for gorillas in their efforts to rebound from population declines. Both gorilla species have experienced a decline in population for decades, and a 2010 United Nations report indicates that they may vanish from significant areas of the Congo Basin by the mid-2020s.

Mountain Gorillas

Eastern Lowland Gorillas

Mountain gorillas, a subspecies of the eastern gorilla, stand out as an exception, having experienced growth over the past few decades, exemplifying a notable conservation success story. This achievement can be attributed to the continuous efforts and collaboration of the International Gorilla Conservation Programme (IGCP), a distinctive coalition of three international conservation organizations: WWF, Conservation International, and Fauna & Flora, which remains committed to ensuring the long-term survival of mountain gorillas.

Conservation initiatives undertaken by WWF, various organizations, and governmental bodies are positively impacting gorilla populations. The population of mountain gorillas has seen a steady increase in recent years, resulting in its downlisting from Critically Endangered to Endangered in November 2018.

Why gorillas matter?

Our closest cousins

Gorillas possess 98.3% of their DNA in common with humans, establishing them as our closest relatives following chimpanzees and bonobos. These remarkable and perceptive creatures frequently astonish us with behaviors and emotions that closely resemble our own human experiences.

Gorillas play a crucial role in the preservation of forest ecosystems.

Gorillas primarily follow a vegetarian diet, dedicating nearly half of their day to foraging for stems, bamboo shoots, and various fruits, along with bark and invertebrates as supplementary sources of nutrition.

Gorillas significantly contribute to the preservation of biodiversity within their forest ecosystems by dispersing the seeds of the trees they consume and creating openings in the canopy as they navigate their environment, thereby allowing sunlight to reach and support the growth of light-dependent plant species.

Humans benefit when gorilla habitat is protected.

In Central Africa, humans rely on the same environment as gorillas for essential resources such as food, water, medicine, and various forest products. Safeguarding the tropical forests of the Congo Basin, home to the gorillas, also ensures the preservation of these forests and the resources vital for the local and indigenous communities in the region. The Congo Basin hosts the second largest tropical rainforest globally, functioning as the green heart of Africa. The moisture produced by this forest contributes to rainfall in the United States, indicating that the consequences of its loss will be experienced on a global scale.

Challenges facing gorillas in Africa

Similar to humans, gorillas have a slow reproductive rate, typically giving birth to a single offspring at a time and nurturing that young for several years before having another child. The slow reproduction rate renders gorillas particularly susceptible to population declines.
Habitat destruction poses a significant challenge throughout their central African range. Gorillas are often targeted in the bushmeat trade, and they may also suffer accidental injuries or fatalities due to iron snares intended for other bushmeat species, such as red river hogs, in their forest habitats. Efforts to safeguard gorillas frequently encounter challenges due to inadequate law enforcement, insufficient adherence to legal frameworks, and civil unrest in numerous regions inhabited by these animals.
Nonetheless, the most significant threat is probably the Ebola virus, which poses a lethal risk to both gorillas and humans. Other diseases, including anthrax, present further challenges to their survival.
Hunting and trading: The commercial trade in bushmeat, growing across west and central Africa, poses a considerable and ongoing threat to gorillas at present. Apes are being targeted mainly to meet the increasing demand for meat in urban areas. Due to their low rates of reproduction, gorillas are declining in population, and even at relatively modest hunting levels, this decrease may take several generations to reverse.
Loss of habitat: A mere 22% of western lowland gorillas exist within protected areas, leaving the majority of these gorillas unprotected and significantly susceptible to poaching activities. Large portions of gorilla forest have already been lost when forests are cleared to make way for subsistence farming or industrial agriculture, or fragmented as a result of selective commercial logging, road building, or urban growth.
Additionally, the bushmeat trade is strongly associated with the loss of habitat. As more and more forests are cleared for logging and other commercial purposes, commercial hunters are able to penetrate gorilla habitats. They then use logging vehicles to transport bushmeat to distant markets and even sell it to logging company employees.
Disease: Ebola hemorrhagic fever is a deadly, contagious disease that has destroyed large numbers of great apes in Africa. In 2003, scientists estimated that one-third of the wild gorilla population had succumbed to the Ebola virus, and the species continues to face significant risk. Furthermore, due to the numerous similarities between gorillas and humans, they are vulnerable to various human diseases. Gorilla populations that regularly interact with humans face heightened risks of severe respiratory infections. Gorillas in the mountain gorilla range are at risk of contracting scabies, tuberculosis, and a plethora of other diseases transmitted by people because of their frequent raids on farms and interactions with tourists.
Loss of habitat: The majority of western lowland gorillas are unprotected and extremely vulnerable to poaching, with only roughly 22% of them living inside protected areas. A lot of gorilla forest has already been lost because it is cut down to make room for subsistence farming or industrial farming, or it is broken up by selected commercial logging, building roads, or people moving into new areas. Additionally, there is a clear connection between the bushmeat trade and habitat destruction. With the opening of previously inaccessible forests by timber companies and others, commercial hunters are gaining access to regions inhabited by gorillas. They frequently utilize logging vehicles to transport bushmeat to distant markets and also sell meat to employees of the logging companies.
Inadequate law enforcement: Gorilla killing and gorilla product trading are prohibited across the gorillas’ territory, but poachers, merchants, and customers are rarely caught because of a lack of law enforcement resources and major governance problems in some of the gorillas’ home regions. Furthermore, the majority of gorillas reside in forests like logging concessions, where law enforcement is frequently nonexistent or even worse, rather than protected areas.

Measures Implemented to Safeguard Gorillas

Advancing tourism

Ecotourism offers valuable opportunities for the conservation of gorillas and their forest habitats, while also supporting the local communities. The WWF has trained gorilla groups to human presence in order to create opportunities for gorilla tourism. In the Dzanga-Sangha Protected Areas, situated in the southwestern Central African Republic, WWF has been co-managing these protected areas since their establishment in 1990. Additionally, since 1997, the organization has implemented a Primate Habituation Program aimed at habituating western lowland gorillas for the purposes of tourism and research. It serves an essential function in the park’s management strategy by generating substantial revenue and reinforcing the important connection with the community. The program presently employs 60 individuals, 45 of whom are indigenous Ba’Aka, making it the largest employer of Indigenous people in the area. With the goal of achieving at least 1,000 visitors a year, further investments are being made today to advance ecotourism in Dzanga-Sangha. The future of mountain gorillas is closely tied to the tourism industry. The annual revenue generated from gorilla tourism plays a crucial role in supporting the conservation and management of the parks, in addition to benefiting local and national economies. The growth of gorilla tourism has contributed to the resurgence of mountain gorillas while also providing advantages to other species and local communities. The notable achievements of mountain gorilla tourism have greatly enhanced the conservation initiatives in the Greater Virunga Landscape. Nonetheless, gorilla tourism can present potential risks to these primates, including the threat of anthropozoonoses, heightened stress levels, and adverse effects on their behavior.
Preventing poaching and illegal wildlife trade: Due to the ongoing issue of poaching in central Africa, WWF and its partners actively oversee the illegal trade involving gorillas and other great apes. The WWF promotes the effective enforcement of wildlife laws by nations and emphasizes the importance of raising awareness in local communities about the risks associated with consuming bushmeat. Furthermore, WWF has equipped local wildlife authorities with training in contemporary antipoaching techniques and gorilla tracking as well as supplied necessary equipment and resources for antipoaching teams across multiple countries.
For instance, since the protected area was established, the eco-guards in Dzanga-Sangha have seized more than 300 firearms and 30,000 rounds of ammunition, as well as more than 850,000 snares from the forest. The remarkable outcomes achieved by the dedicated efforts of the anti-poaching teams have greatly enhanced the safety of the gorilla population.
The antipoaching initiatives in Dzanga-Sangha Protected Areas (DSPA) in the Central African Republic (CAR) have led to thriving populations of gorillas and other species, such as forest elephants.
Observing populations: WWF engages in research focused on the ecology, distribution, and population biology of gorillas. They provide support for research focused on the transmission of diseases between humans and gorillas, as well as the natural dissemination of illnesses like Ebola, in addition to efforts in disease prevention. Park rangers frequently oversee the monitoring of gorillas, which has led WWF and our partners to implement a ranger-based monitoring program specifically for mountain gorillas. In partnership with IGCP and other collaborators, we contributed to the inaugural mountain gorilla census in the Virunga Massif in 2003, followed by efforts in Bwindi Impenetrable National Park in 2006, and a comprehensive assessment of their entire population in the Virunga landscape in 2016.
Conserving natural environments: Habitat destruction poses a significant concern for both eastern and western gorillas. WWF has actively engaged in the designation of new protected areas for gorillas in various locations, including Cameroon, where these areas serve as vital havens for the western lowland gorilla. WWF collaborates with local governments in the Congo Basin, logging companies, and international lending institutions to foster dialogue, advocate for optimal environmental practices, and support the adoption of forest certification standards, including the Forest Stewardship Council (FSC) certification.
A 2024 study published in the scientific journal Nature revealed that medium- to large-sized mammal populations are significantly higher in FSC-certified forests in Gabon and the Republic of the Congo when compared to non-certified forests. The findings demonstrate FSC’s effectiveness in conserving wildlife while also promoting environments conducive to economic development without compromising ecological integrity.
Measures Implemented to Safeguard Gorillas
Advancing tourism:Ecotourism offers valuable opportunities for the conservation of gorillas and their forest habitats, while also supporting the local communities. The WWF has trained gorilla groups to human presence in order to create opportunities for gorilla tourism. In the Dzanga-Sangha Protected Areas, situated in the southwestern Central African Republic, WWF has been co-managing these protected areas since their establishment in 1990. Additionally, since 1997, the organization has implemented a Primate Habituation Program aimed at habituating western lowland gorillas for the purposes of tourism and research. It serves an essential function in the park’s management strategy by generating substantial revenue and reinforcing the important connection with the community. The program presently employs 60 individuals, 45 of whom are indigenous Ba’Aka, making it the largest employer of Indigenous people in the area. With the goal of achieving at least 1,000 visitors a year, further investments are being made today to advance ecotourism in Dzanga-Sangha.
The future of mountain gorillas is closely tied to the tourism industry. The annual revenue generated from gorilla tourism plays a crucial role in supporting the conservation and management of the parks, in addition to benefiting local and national economies. The growth of gorilla tourism has contributed to the resurgence of mountain gorillas while also providing advantages to other species and local communities. The notable achievements of mountain gorilla tourism have greatly enhanced the conservation initiatives in the Greater Virunga Landscape. Nonetheless, gorilla tourism can present potential risks to these primates, including the threat of anthropozoonoses, heightened stress levels, and adverse effects on their behavior.
Preventing poaching and illegal wildlife trade: Due to the ongoing issue of poaching in central Africa, WWF and its partners actively oversee the illegal trade involving gorillas and other great apes. The WWF promotes the effective enforcement of wildlife laws by nations and emphasizes the importance of raising awareness in local communities about the risks associated with consuming bushmeat. Furthermore, WWF has equipped local wildlife authorities with training in contemporary antipoaching techniques and gorilla tracking as well as supplied necessary equipment and resources for antipoaching teams across multiple countries. For instance, since the protected area was established, the eco-guards in Dzanga-Sangha have seized more than 300 firearms and 30,000 rounds of ammunition, as well as more than 850,000 snares from the forest. The remarkable outcomes achieved by the dedicated efforts of the anti-poaching teams have greatly enhanced the safety of the gorilla population. The antipoaching initiatives in Dzanga-Sangha Protected Areas (DSPA) in the Central African Republic (CAR) have led to thriving populations of gorillas and other species, such as forest elephants.
Observing populations: WWF engages in research focused on the ecology, distribution, and population biology of gorillas. They provide support for research focused on the transmission of diseases between humans and gorillas, as well as the natural dissemination of illnesses like Ebola, in addition to efforts in disease prevention. Park rangers frequently oversee the monitoring of gorillas, which has led WWF and our partners to implement a ranger-based monitoring program specifically for mountain gorillas. In partnership with IGCP and other collaborators, we contributed to the inaugural mountain gorilla census in the Virunga Massif in 2003, followed by efforts in Bwindi Impenetrable National Park in 2006, and a comprehensive assessment of their entire population in the Virunga landscape in 2016.
Conserving natural environments: Habitat destruction poses a significant concern for both eastern and western gorillas. WWF has actively engaged in the designation of new protected areas for gorillas in various locations, including Cameroon, where these areas serve as vital havens for the western lowland gorilla. WWF collaborates with local governments in the Congo Basin, logging companies, and international lending institutions to foster dialogue, advocate for optimal environmental practices, and support the adoption of forest certification standards, including the Forest Stewardship Council (FSC) certification.
A 2024 study published in the scientific journal Nature revealed that medium- to large-sized mammal populations are significantly higher in FSC-certified forests in Gabon and the Republic of the Congo when compared to non-certified forests. The findings demonstrate FSC’s effectiveness in conserving wildlife while also promoting environments conducive to economic development without compromising ecological integrity.