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Lake Barombi Koto, also known as Lake Barombi Kotto or Lake Barombi-ba-Kotto, is a small lake in the volcanic chain in the Southwest Region of Cameroon. It is a volcanic lake with a diameter of about .〔 There is a small island in the middle, which is densely inhabited by the Barombi, a tribe of fishers.〔 The Tung Nsuia and Tung Nsuria streams, each about wide and deep near their mouth, are the only inflows into the lake,〔 and they dry out in dry season.〔 Lake Barombi Koto often appears green-brown because it is rich in phytoplankton.〔 Invertebrates, turtles and the aquatic frog ''Xenopus tropicalis'' are common in the lake,〔〔 which is also an important sanctuary for birds.〔Hughes, R.H., and J.S. Hughes (1992). ''A Directory of African Wetlands.'' Pp. 474-475. ISBN 2-88032-949-3〕 Seven fish species are known from the lake, including ''Barbus callipterus'' and a ''Clarias'' catfish, while the remaining all are cichlids: ''Coptodon kottae'', ''Chromidotilapia guentheri'', ''Hemichromis fasciatus'', ''Pelmatolapia mariae'' and ''Sarotherodon galilaeus''.〔 Of these, ''C. guentheri'' is represented by the endemic subspecies ''loennbergi'', while ''C. kottae'' is entirely endemic to this lake and the smaller Lake Mboandong. Both endemics are threatened by pollution and sedimentation from human activities, and "turning" of the lake's water because of deforestation of the surroundings (this may allow more wind, and the lake is stratified with oxygen-poor lower levels). They are potentially also threatened by large emissions of carbon dioxide from the lake's bottom (compare Lake Nyos).〔〔 The nothobranchiids ''Aphyosemion bivittatum'', ''Epiplatys sexfasciatus'' and ''Fundulopanchax oeseri'', the poeciliid ''Procatopus similis'', and ''Barbus callipterus'' are found in the Tung Nsuia and Tung Nsuria streams.〔 ''Bulinus'' snails (including the near-endemic ''B. camerunensis'') infested with ''Schistosoma'', which causes the disease bilharzia in humans, are present in the lake.〔Atemnkeng, A. F., K. J. N. Ndamukong, N. N. Ntonifor, and J. Mbuh (2006). ''(Life cycle, population dynamics and schistosome infection in Bulinus spp. from a crater lake in the South West Province of Cameroon. )'' Journal of the Cameroon Academy of Science 6(2): 99-105〕 ==Lake Mboandong== About south of Lake Barombi Koto is the even smaller Lake Mboandong, another shallow crater lake with a diameter of about .〔 There is no inflow and the only outflow is a small stream during the wet season.〔 Lake Mboandong is less rich in phytoplankton and has less fish species, but all are species shared with Lake Barombi Koto and its inflowing streams: ''Aphyosemion bivittatum'', ''Fundulopanchax oeseri'', ''Coptodon kottae'', ''Hemichromis fasciatus'' and ''Sarotherodon galilaeus''.〔 Members of the Barombi tribe that live at Lake Barombi Koto sometimes visit Lake Mboandong to fish.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lake Barombi Koto」の詳細全文を読む スポンサード リンク
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