Northeastern Congolian lowland forests

The Northeastern Congolian lowland forests lie in the northeastern basin of the Congo River. The ecoregion is mostly in the Democratic Republic of the Congo, with a portion extending into the southern Central African Republic. It is the easternmost portion of the Guineo-Congolian region, a belt of tropical rain forests that extends through western and central Africa.[3]

The Ituri Rainforest is in the ecoregion.

The ecoregion is lies north and east of Congo River, and other rainforest ecoregions bound it on the west and southwest. It is bounded on the north by the Northern Congolian forest-savanna mosaic, and on the southeast by the Southern Congolian forest-savanna mosaic. The Albertine Rift mountains bound the Congo Basin on the east, and are home to the neighboring Albertine Rift montane forests ecoregion above 1500 meters elevation.

The climate is humid and tropical. Average annual rainfall ranges from 1,500 mm to 2,000 mm, and is generally lower in the east. There is a distinct dry season from January to March.[3]

The predominant plant community is lowland moist forest. The forests are principally evergreen, with areas of semi-evergreen forest where some trees lose their leaves during the winter dry season. The forests are mostly a mix of species, although there are some single-species stands, notably Gilbertiodendron dewevrei.[3]

Transitional submontane forest is found at the eastern edge of the ecoregion on the lower slopes of the Albertine Rift mountains, and drier transitional forest is found along the ecoregion's northern edge.[3]

16 mammals are endemic to the ecoregion, including the okapi, giant genet, aquatic genet, mountain shrew, African foggy shrew, Congo shrew, fuscous shrew (Crocidura polia), owl-faced monkey, L'Hoest's monkey, pied bat, Allen's striped bat, Misonne's soft-furred mouse, and Verschuren's swamp rat. It is important habitat for the eastern lowland gorilla.[3]

Endemic birds include Neumann's coucal (Centropus neumanni) and golden-naped weaver (Ploceus aureonucha). Nahan's francolin, Ituri batis, Turner's eremomela, Congo peacock, Sassi's greenbul, Bedford's paradise-flycatcher, and Chapin's mountain-babbler are considered near-endemic.[3]

There are five endemic reptiles, including the Zaire dwarf gecko. There are seven endemic amphibians, including the olive shovelnose (Hemisus olivaceus), Kigulube reed frog (Hyperolius diaphanus), Kunungu reed frog (H. schoutendeni), Mertens' running frog (Kassina mertensi), Buta River frog (Phrynobatrachus gastoni), Christy's grassland frog (Ptychadena christyi), and Pangi Territory frog (Amietia chapini).[3]

The eastern edge of the ecoregion along the Albertine Rift is the most densely-populated. The central part of the ecoregion, including the Ituri Forest, is sparsely populated, and is home to the Mbuti people, an indigenous pygmy people who live by hunting and gathering in the forest.

A 2017 assessment found that 54,712 km², or 11%, of the ecoregion is in protected areas. 34% of the unprotected area is still forested.[4] Protected areas include Okapi Faunal Reserve, Kahuzi-Biega National Park, Maïko National Park, Yangambi Biosphere Reserve, Maika-Penge Hunting Reserve, Rubi Tele Hunting Reserve, and Bili-Uere Hunting Reserve.[3]

• "Northeastern Congolian lowland forests". Terrestrial Ecoregions. World Wildlife Fund.