Lake Barombi Mbo | |
---|---|
Satellite photo from NASA. Barombi Mbo is the circular lake above the center. | |
Primary outflows | Mungo River |
Basin countries | Cameroon |
Surface area | 5 square kilometres (1.9 sq mi)[1] or 7 square kilometres (2.7 sq mi)[2][3] |
Average depth | 69 metres (226 ft)[1] |
Max. depth | 111 metres (364 ft)[1] |
Surface elevation | 300 metres (980 ft)[1] |
Lake Barombi Mbo or Barombi-Ma-Mbu is a lake in the Southwest Region of Cameroon. It is located in the Cameroon volcanic chain, and is the largest volcanic lake in this region.[1] It is one of the oldest radiocarbon-dated lakes in Africa.[4] On old colonial maps the area was known as Elefanten Sea (Elephant Lake), but the elephants living in the area went extinct due to ivory trading.[5]
Until now, 15 species of fishes have been recorded from the lake.[1] Among others, this includes a member of the Barbus aboinensis group, a member of the Fundulopanchax mirabilis group, and the endemic catfish Clarias maclareni. Perhaps most noteworthy are the 11 species of cichlids that are endemic to the lake (Konia spp., Stomatepia spp., Myaka myaka, Pungu maclareni, Sarotherodon caroli, S. linnellii, S. lohbergeri, and S. steinbachi), and likely the results of sympatric speciation.[6] All the endemics are seriously threatened by pollution and sedimentation from human activities, and potentially also by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos).[2][3][7] Commercial fishing is forbidden in the lake.[2][3][7] Additionally, the lake has an endemic species of sponge (Corvospongilla thysi), and an endemic species of shrimp (Caridina sp.).[1]