摘要：Human activities have modified and altered the natural habitats in numerous ways. The most remarkable changes involve widespread degradation of entire areas, such as a shift from forest to agricultural use. However, a more pervasive influence is the construction of linear open areas like tracks, paths, and roads through previ- ously continuous habitat (Forman, 2000). Roads act as a part of development and this part, connectivity being a priority, large areas of pristine habitats have been sacri- ficed resulting in several direct and indirect negative impacts on ecosystems (Goosem, 2007). Also, roads act as large threat to some wildlife populations (Forman, et al., 2003) acting as complete or partial barriers for their movement (Brody and Pelton, 1989; Burnett, 1992; Mader, 1984; Oxley, et al., 1974; Rondinini and Don- caster, 2002; Shine, et al., 2004; Van Gelder, 1973).
