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Landscape fragmentation and river basins. Landscape fragmentation of G. p. gambiensis habitat based on a tree cover threshold of 20% (year 2000) (44) and related linear fragmentation indices. (A) Patch area. (B) Patch density. (C) Maximum distance of unsuitable area (or maximum distance between patches). (D) Locations of the tsetse sampling sites grouped by river basin (45).
