The Congolian rainforests ( French: ''Forêts tropicales congolaises'') are a broad belt of lowland tropical moist broadleaf forests which extend across the basin of the

Congo River The Congo River, formerly also known as the Zaire River, is the second-longest river in Africa, shorter only than the Nile, as well as the third-largest river in the world list of rivers by discharge, by discharge volume, following the Amazon Ri ...

and its tributaries in

Central Africa Central Africa (French language, French: ''Afrique centrale''; Spanish language, Spanish: ''África central''; Portuguese language, Portuguese: ''África Central'') is a subregion of the African continent comprising various countries accordin ...

Description

The Congolian rainforest is the world's second-largest

tropical forest Tropical forests are forested ecoregions with tropical climates – that is, land areas approximately bounded by the Tropic of Cancer, tropics of Cancer and Tropic of Capricorn, Capricorn, but possibly affected by other factors such as prevailing ...

, after the

Amazon rainforest The Amazon rainforest, also called the Amazon jungle or Amazonia, is a Tropical and subtropical moist broadleaf forests, moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin ...

. It covers over across six countries and contains a quarter of the world's remaining tropical forest. The Congolian forests cover southeastern

Cameroon Cameroon, officially the Republic of Cameroon, is a country in Central Africa. It shares boundaries with Nigeria to the west and north, Chad to the northeast, the Central African Republic to the east, and Equatorial Guinea, Gabon, and the R ...

Gabon Gabon ( ; ), officially the Gabonese Republic (), is a country on the Atlantic coast of Central Africa, on the equator, bordered by Equatorial Guinea to the northwest, Cameroon to the north, the Republic of the Congo to the east and south, and ...

Republic of the Congo The Republic of the Congo, also known as Congo-Brazzaville, the Congo Republic or simply the Congo (the last ambiguously also referring to the neighbouring Democratic Republic of the Congo), is a country located on the western coast of Central ...

, the northern and central

Democratic Republic of the Congo The Democratic Republic of the Congo (DRC), also known as the DR Congo, Congo-Kinshasa, or simply the Congo (the last ambiguously also referring to the neighbouring Republic of the Congo), is a country in Central Africa. By land area, it is t ...

, and portions of southern and central Africa. The Congolian rainforest is home to a large number of flora and fauna, including more than 10,000 species of plants and over 10,000 species of animals. It is estimated that the region contains more than a quarter of the world’s plant species and is home to one of the world’s most threatened primate species, the

western lowland gorilla The western lowland gorilla (''Gorilla gorilla gorilla'') is one of two Critically Endangered subspecies of the western gorilla (''Gorilla gorilla'') that lives in Montane ecosystems#Montane forests, montane, Old-growth forest, primary and sec ...

. There are also a number of other species of primates, including the

chimpanzee The chimpanzee (; ''Pan troglodytes''), also simply known as the chimp, is a species of Hominidae, great ape native to the forests and savannahs of tropical Africa. It has four confirmed subspecies and a fifth proposed one. When its close rel ...

, black colobus monkey, red colobus monkey, and

olive baboon The olive baboon (''Papio anubis''), also called the Anubis baboon, is a member of the family Cercopithecidae Old World monkeys. The species is the most wide-ranging of all baboons, being native to 25 countries throughout Africa, extending from ...

. To the north, south, and southwest, the forests transition to drier forest-savanna mosaic, a mosaic of drier forests,

savanna A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) biome and ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach th ...

s, and

grassland A grassland is an area where the vegetation is dominance (ecology), dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes such as clover, and other Herbaceo ...

s. To the west, the Congolian forests transition to the coastal Lower Guinean forests, which extend from southwestern Cameroon into southern

Nigeria Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea in the Atlantic Ocean to the south. It covers an area of . With Demographics of Nigeria, ...

and

Benin Benin, officially the Republic of Benin, is a country in West Africa. It was formerly known as Dahomey. It is bordered by Togo to the west, Nigeria to the east, Burkina Faso to the north-west, and Niger to the north-east. The majority of its po ...

; these forest zones share many similarities and are sometimes known as the Lower Guinean-Congolian forests. To the east, the lowland Congolian forests transition to the highland Albertine Rift montane forests, which cover the mountains lining the Albertine Rift, a branch of the

East African Rift The East African Rift (EAR) or East African Rift System (EARS) is an active continental rift zone in East Africa. The EAR began developing around the onset of the Miocene, 22–25 million years ago. It was formerly considered to be part of a l ...

system.

Ecoregions

The

World Wide Fund for Nature The World Wide Fund for Nature (WWF) is a Swiss-based international non-governmental organization founded in 1961 that works in the field of wilderness preservation and the reduction of human impact on the environment. It was formerly named th ...

divides the Congolian forests into six distinct

ecoregion An ecoregion (ecological region) is an ecological and geographic area that exists on multiple different levels, defined by type, quality, and quantity of environmental resources. Ecoregions cover relatively large areas of land or water, and c ...

s: * Atlantic Equatorial coastal forests (Cameroon,

Equatorial Guinea Equatorial Guinea, officially the Republic of Equatorial Guinea, is a country on the west coast of Central Africa. It has an area of . Formerly the colony of Spanish Guinea, its post-independence name refers to its location both near the Equ ...

, Gabon, Republic of the Congo,

Angola Angola, officially the Republic of Angola, is a country on the west-Central Africa, central coast of Southern Africa. It is the second-largest Portuguese-speaking world, Portuguese-speaking (Lusophone) country in both total area and List of c ...

, Democratic Republic of the Congo) * Northwestern Congolian lowland forests (Cameroon,

Central African Republic The Central African Republic (CAR) is a landlocked country in Central Africa. It is bordered by Chad to Central African Republic–Chad border, the north, Sudan to Central African Republic–Sudan border, the northeast, South Sudan to Central ...

, Gabon, Republic of Congo) *

Western Congolian swamp forests The Western Congolian swamp forests ( French: ''Forêts marécageuses de l'ouest du Congo'') are an ecoregion of the Republic of the Congo, Democratic Republic of the Congo and adjoining Central African Republic. Together with the adjacent Easter ...

(Republic of the Congo, Democratic Republic of the Congo) * Eastern Congolian swamp forests (Democratic Republic of the Congo) * Central Congolian lowland forests (Democratic Republic of the Congo) * Northeastern Congolian lowland forests (Democratic Republic of the Congo, Central African Republic)

Flora and fauna

The Congolian rainforests are home to over 10,000 species of plants of which 30% are

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

. The Congolian rainforests are less biodiverse than the Amazon and

Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...

n rainforests. However, its plant and animal life is still more rich and varied than most other places on Earth. The Congolian Forests are a

global 200 The Global 200 is the list of ecoregions identified by the World Wide Fund for Nature ( WWF), the global conservation organization, as priorities for conservation. According to WWF, an ecoregion is defined as a "relatively large unit of land or w ...

. There are over 400 species of mammals in the rainforest, including

African forest elephant The African forest elephant (''Loxodonta cyclotis'') is one of the two living species of African elephant, along with the African bush elephant. It is native to humid tropical forests in West Africa and the Congo Basin. It is the smallest of the ...

African bush elephant The African bush elephant (''Loxodonta africana''), also known as the African savanna elephant, is a species of elephant native to sub-Saharan Africa. It is one of three extant elephant species and, along with the African forest elephant, one ...

leopard The leopard (''Panthera pardus'') is one of the five extant cat species in the genus ''Panthera''. It has a pale yellowish to dark golden fur with dark spots grouped in rosettes. Its body is slender and muscular reaching a length of with a ...

s, bongos, red river hogs,

bonobo The bonobo (; ''Pan paniscus''), also historically called the pygmy chimpanzee (less often the dwarf chimpanzee or gracile chimpanzee), is an endangered great ape and one of the two species making up the genus ''Pan (genus), Pan'' (the other bei ...

mountain gorilla The mountain gorilla (''Gorilla beringei beringei'') is one of the two subspecies of the eastern gorilla. It is listed as endangered by the IUCN . There are two populations: One is found in the Virunga Mountains, Virunga volcanic mountains of C ...

s, and lowland gorillas. The

okapi The okapi (; ''Okapia johnstoni''), also known as the forest giraffe, Congolese giraffe and zebra giraffe, is an artiodactyl mammal that is endemic to the northeast Democratic Republic of the Congo in central Africa. However, non-invasive gen ...

is endemic to the northeastern Congolian rainforests. The rainforests have 1,000 native species of birds like the grey parrot, brown nightjar and the bat hawk, and 700 species of fish like the

Nile tilapia The Nile tilapia (''Oreochromis niloticus'') is a species of tilapia, a cichlid occurring naturally in parts of Africa (such as its namesake Nile River) and the Levant, though numerous introduced populations exist outside its natural range. T ...

Nile perch The Nile perch (''Lates niloticus''), also known as the African snook, Goliath perch, African barramundi, Goliath barramundi, Giant lates or the Victoria perch, is a species of freshwater fish in family Latidae of order Perciformes. It is wides ...

and the giraffe catfish. Rainforest Gabon

Conservation

Threats to the rainforests include destruction and fragmentation of forests by commercial logging,

oil palm ''Elaeis'' () is a genus of palms, called oil palms, containing two species, native to Africa and the Americas. They are used in commercial agriculture in the production of palm oil. Description Mature palms are single-stemmed, and can gro ...

plantations, and mining. The

bushmeat Bushmeat is meat from wildlife species that are Hunting, hunted for human consumption. Bushmeat represents a primary source of animal protein and a cash-earning commodity in poor and rural communities of humid tropical forest regions of the worl ...

trade and poaching is depleting the rainforests of wildlife. With annual forest loss of 0.3% during the 2000s, the region had the lowest

deforestation Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. Ab ...

rate of any major tropical forest zone. From 2015 to 2019, the rate of

in the Democratic Republic of the Congo doubled. In 2021, deforestation of the Congolese rainforest increased by 5%. Over the past 20 years, 17.1 million hectares of forest have been cut down.

References

External links

* https://web.archive.org/web/20120308120322/http://www.whrc.org/mapping/pantropical/carbonmap2000.html
Congo Basin Ecoregions
Yale School of Forestry and Environmental Studies
The Congo Rainforest

Congo Rainforest and Basin (WWF)

{{Regions of Africa Afrotropical ecoregions Rainforests of Africa Congolian forests Ecoregions of Cameroon Ecoregions of Gabon Ecoregions of the Central African Republic Ecoregions of the Democratic Republic of the Congo Ecoregions of the Republic of the Congo * * * * * *