Virunga National Park

 

Established in 1925 as Albert National Park (809,000ha); revised by Decree No. 69-041 of 22 August 1969 as Virunga National Park. Designated as a World Heritage site in 1979.

 

The park lies in the north-east of the Democratic Republic of the Congo, on the border with Uganda and Rwanda, and includes part of Lake Edward (Idi Amin), the Semliki River valley, parts of the Rwindi, Ishasha and Rutshuru valleys south of the lake, the Virunga area within the Democratic Republic of the Congo, and part of the Rwenzori range. Lake Edward belongs to the Nile river system and Lake Kivu to the Congo Basin river system.

Features include hot springs in the Rwindi plains and the Virunga Massif volcanoes, such as Nyamulagira (3,068 m) and Nyiragongo (3,470 m), are still active. The areas of lowest and highest rainfall in the Democratic Republic of the Congo are in Virunga National Park.

The considerable altitudinal range results in marked climatic variations which affect the overall biological and geographical diversity of habitats. Habitat types include lakes at various altitudes, marshy deltas and peat bogs, savannahs and lava plains, low altitude equatorial forest, high-altitude glaciers, and snowfields (the Rwenzori peaks have permanent snow cover).

Located at the border between several biogeographic zones, the park protects both tropical rainforest and eastern steppe species, and its range of altitudes adds to the habitat variety. The diversity includes: bamboo and Hagenia forest on the mountains; equatorial forest along the Semiliki; wooded savannah of the Rwindi; steppes; various low savannahs; swamps and transitional habitats; dry thick forest; Neoboutonia macrocalyx forest on the lava plains; wet thick forest; alpine forests; and sparse vegetation above 4,300 m comprising mainly lichens and spermatophyta, although Graminae have been found growing at over 5,000 m.

Some of the largest wild animal concentrations in Africa occur along the rivers of the park. Mammals in the savannah of the Rwindi area include: elephant, hippopotamus, buffalo, numerous antelope including kob, defassa waterbuck and topi, warthog, lion and various monkeys. Large numbers of pelicans occur on the lower Rutshuru. In the Semiliki Valley and on the slopes of the Virunga mountains are gorilla, chimpanzee and okapi. In the extreme north are forest hog and bongo. Birds include Nahan’s francolin, forest ground thrush, shoebill and probably papyrus yellow warbler.

 

The World of the Mountain Gorilla

The mountain gorilla (Gorilla beringei beringei) is the largest of all the gorillas and is the most endangered. The world’s remaining 820 mountain gorillas live in three different countries in Central Africa: Democratic Republic of Congo, Rwanda, and Uganda. Although this makes their range seem large, the mountain gorillas actually inhabit a small geographic area where the borders of these three countries meet. Over half of the world’s mountain gorillas can be found amidst the Virunga chain of volcanoes and the remaining populations live in Uganda’s Bwindi Impenetrable Forest some 75 km to the north.

Unlike their lowland counterparts, the mountain gorillas have long hair, which helps them handle the temperature extremes found at altitude. Mountain gorillas live in large family units led by a single dominant adult male, known as the “Silverback” — a name derived from the grey hair that develops on male’s back as it reaches adulthood. The Silverback is responsible for protecting the family from predators or other threats, including solitary Silverbacks intent on claiming females as their own. The dominant Silverback also takes on the role of mediator when disputes arise in the family. Some families contain more than one Silverback, but only one is dominant and that male alone is responsible for mating with the adult females of the group.

The sub-adult males of the family are known as “Blackbacks”. Adult females are generally half the size of the males and it is their responsibility to initiate mating with the dominant male, as well as care for the infants.

Despite all the lore about the ferocity of the mountain gorilla, in general they are very peaceful creatures. Most days are spent foraging for food, playing, and grooming. Aside from mock fighting amongst juveniles, displays of aggression are reserved for challenges to the Silverback’s dominance or direct threats to the family’s well being.

The mountain gorilla’s fierceness has been seen protecting its young from illegal animal traffickers intent on capturing baby gorillas. For every mountain gorilla baby that is found in the marketplace, an entire family of gorillas has died trying to protect it.

In addition to the threat posed by the illegal animal trade, the major threats to the mountain gorilla’s continued existence are habitat destruction, poaching, human diseases and war and civil unrest. Although Virunga National Park is a UNESCO World Heritage site and the mountain gorilla its “flagship” species, the war raging in eastern Congo since 1994 has rendered this distinction moot. Over 300,000 refugees now inhabit the area just below the park’s southern border. Due to the shattered infrastructure of eastern Congo, these refugees have had no choice but to enter mountain gorilla habitat for fuel and food.

Disease is arguably one of the gravest threats to the mountain gorilla. With people encroaching more and more into gorilla habitat, one of the few remaining ways to protect mountain gorillas is tourism. Unfortunately, tourism brings with it one of the biggest potential threats — disease. Because mountain gorillas share approximately 97% of our DNA, they are susceptible to the same diseases as humans. Unlike humans, however, their resistance is much lower. Sicknesses that the average human can beat with bed rest and antibiotics can prove fatal to the mountain gorilla. More serious outbreaks, such as Ebola or virulent strains of influenza could take the few remaining mountain gorilla populations beyond the point of return. Because of this vulnerability, it is imperative that tourists only visit gorillas when healthy and keep a minimum distance of 25 feet (7 meters) away. In the bigger scheme, the mountain gorilla’s range needs to be expanded to provide discrete populations with the geographic isolation needed to prevent the widespread transmission of disease.

Understanding the nature of mountain gorillas, and the threats they face, is the first step in assuring their preservation.