At 475,440 km2 (183,570 sq mi), Cameroon is the world's 53rd largest country. It is slightly larger than the nation of Sweden and the US state of California. It is comparable in size to Papua New Guinea. Cameroon's landmass is 472,710 km2 (182,510 sq mi), with 2,730 km2 (1,050 sq mi) of water.
The Cross River gorilla is a critically endangered subspecies of the western gorilla. It was named a new species in 1904 by Paul Matschie, a mammalian taxonomist working at the Humboldt University Zoological Museum in Berlin, but its populations were not systematically surveyed until 1987.
The Mandara Mountains are a volcanic range extending about 190 km along the northern part of the Cameroon–Nigeria border, from the Benue River in the south to the north-west of Maroua in the north. The highest elevation is the summit of Mount Oupay, at 1,494 m (4,900 ft) above sea level.
The Cross–Sanaga–Bioko coastal forests are a tropical moist broadleaf forest ecoregion of west-central Africa. This is a lush forest, rich in flora and birdlife.
The Guinean forest-savanna , also known as the Guinean forest-savanna transition, is a distinctive ecological region located in West Africa. It stretches across several countries including Guinea, Sierra Leone, Liberia, Ivory Coast, Ghana, Togo, Benin, Nigeria, and Cameroon. This region is characterized by a unique blend of forested areas and savannas, creating a diverse and dynamic landscape.
The western gorilla is a great ape found in Africa, one of two species of the hominid genus Gorilla. Large and robust with males weighing around 168 kilograms (370 lb), the species is found in a region of midwest Africa, geographically isolated from the eastern gorilla. The hair of the western species is significantly lighter in color.
The Cameroon line is a 1,600 km (1,000 mi) long chain of volcanoes that includes islands in the Gulf of Guinea and mountains on the African mainland, from Mount Cameroon on the coast towards Lake Chad on the northeast. They form a natural border between eastern Nigeria and the West Region of Cameroon. The islands, which span the equator, have tropical climates and are home to many unique plant and bird species. The mainland mountain regions are much cooler than the surrounding lowlands, and also contain unique and ecologically important environments.
Esperance mallee is an ecoregion on the south coast of Western Australia, a coastal strip where the predominant vegetation consists of short eucalyptus trees and shrubs.
The wildlife of Cameroon is composed of its flora and fauna. Bordering Nigeria, it is considered one of the wettest parts of Africa and records Africa's second highest concentration of biodiversity. To preserve its wildlife, Cameroon has more than 20 protected reserves comprising national parks, zoos, forest reserves and sanctuaries. The protected areas were first created in the northern region under the colonial administration in 1932; the first two reserves established were Mozogo Gokoro Reserve and the Bénoué Reserve, which was followed by the Waza Reserve on 24 March 1934. The coverage of reserves was initially about 4 percent of the country's area, rising to 12 percent; the administration proposes to cover 30 percent of the land area.
Preuss's red colobus is a red colobus primate species endemic to the Cross-Sanaga Rivers ecoregion. An important population occurs in Korup National Park, Southwest Province, Cameroon, but the species' distribution is localized. The species is considered present in adjacent Cross River National Park - Oban Division in Nigeria and hunter reports suggest that few groups remain in Nkwende Hills and Nta Ali Forest Reserve in the broader Korup region. A population is also present in Ebo forest, Littoral Province of Cameroon.
Nki National Park is a national park in southeastern Cameroon, located in its East Province. The closest towns to Nki are Yokadouma, Moloundou and Lomie, beyond which are rural lands. Due to its remoteness, Nki has been described as "the last true wilderness." It has a large and varied ecosystem, and it is home to over 265 species of birds, and the forests of Cameroon contain some of the highest population density of forest elephants of any nation with an elephant density of roughly 2.5 per square kilometer for Nki and neighboring Boumba Bek National Park combined. These animals are victims of poaching, which has been a major problem since an economic depression in the 1980s. The indigenous people follow in the footsteps of the poachers, attracted by the financial opportunities. The removal of logging industries from the park, on the other hand, has been a success; it is no longer considered a major threat to Nki's wilderness.
Lobéké National Park is a national park of southeastern Cameroon within the Moloundou Arrondissement of East Province. Located in the Congo Basin, it is bounded on the east by the Sangha River which serves as Cameroon's international border with Central African Republic and the Republic of the Congo. It is adjacent to two other reserves in the CAR and Congo. To the northwest is Boumba Bek National Park, another national park in Cameroon's East Province.
The Cross River National Park is a national park of Nigeria, located in Cross River State, Nigeria. There are two separate sections, Okwangwo and Oban . The park has a total area of about 4,000 km2, most of which consists of primary moist tropical rainforests in the North and Central parts, with mangrove swamps on the coastal zones. Parts of the park belong to the Guinea-Congolian region, with a closed canopy and scattered emergent trees reaching 40 or 50 meters in height.
The Mbe Mountains Community Forest is situated in southern Nigeria, and covers 86 km2.
The Afi Mountain Wildlife Sanctuary in Cross River State in southern Nigeria covers 104 km2 (40 sq mi). The wildlife sanctuary was founded in 2000 to provide refuge for endangered animal species, including the Cross River gorilla, the Nigeria-Cameroon chimpanzee, the drill and the gray-necked rockfowl.
The Dzanga-Ndoki National Park is located in the southwestern extremity of the Central African Republic. Established in 1990, the national park is 1,143.26 square kilometres (441.42 sq mi). The national park is split into two non-continuous sectors, the northern Dzanga sector 49,500 ha and the southern Ndoki sector 72,500 ha. Notable in the Dzanga sector is a gorilla density of 1.6/km2 (4.1/sq mi), one of the highest densities ever reported for the western lowland gorilla.
The Manyu River rises near Wabane
Cross River is the main river in southeastern Nigeria and gives its name to Cross River State. It originates in Cameroon, where it takes the name of the Manyu River. Although not long by African standards its catchment has high rainfall and it becomes very wide. Over its last 80 kilometres (50 mi) to the sea it flows through swampy rainforest with numerous creeks and forms an inland delta near its confluence with the Calabar River, about 20 kilometres (12 mi) wide and 50 kilometres (31 mi) long between the cities of Oron on the west bank and Calabar, on the east bank, more than 30 kilometres (19 mi) from the open sea. The delta empties into a broad estuary which it shares with a few smaller rivers. At its mouth in the Atlantic Ocean, the estuary is 24 kilometres (15 mi) wide. The eastern side of the estuary is in the neighboring country of Cameroon.
The Mandara Plateau mosaic, also known as the Mandara Plateau woodlands, is a tropical grasslands, savannas, and shrublands ecoregion located in the Mandara Mountains of northern Nigeria and Cameroon.
