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The fauna of Lake Sonfon, Sierra Leone
Author(s) -
GREEN J.
Publication year - 1979
Publication title -
journal of zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0952-8369
DOI - 10.1111/j.1469-7998.1979.tb07717.x
Subject(s) - fauna , biology , ecology , biological dispersal , sierra leone , genus , taxon , brachionus , habitat , crater lake , rotifer , impact crater , population , demography , sociology , astrobiology , development economics , economics
Lake Sonfon lies in an isolated basin in the Sula Mountains of Sierra Leone. One hundred and two animal taxa were collected from this lake in April 1976: 78 of these have been identified to species, and all but four as far as the genus. The fauna consists mainly of animals with extensive geographical distributions, indicating that they have wide dispersal capacities. Three of the rotifers have not previously been recorded in Africa, and are known only from the Americas. The lake is characterized by a low conductivity and low pH. These two factors influence the fauna. Snails are absent, rhizopods are abundant, and so are rotifers of the genus Lecane , while the genus Brachionus is poorly represented. When compared with Debundsha Lake, a low conductivity crater lake in Cameroon, which has been studied to a similar extent , Lake Sonfon has twice as many species; this can be related to the greater diversity of habitats in Lake Sonfon.