Changes in the vegetation and reptile populations on Round Island, Mauritius, following eradication of rabbits

Abstract

Changes in the vegetation and reptile populations on Round Island, Mauritius are described using the results of expeditions in 1982 (when rabbits Oryctolagus cuniculus were abundant) and 1989 (three years after their eradication). Changes in vegetation cover and composition are described, all directly or indirectly attributable to the eradication of rabbits. These changes include marked increases in the regeneration of three tree species (all endemic, or largely restricted, to Round Island) and plant species formerly grazed by rabbits. The increasing impact of plant species accidentally introduced to the island is documented. Recent increases in the populations of several endemic reptile species (five of which are threatened) are also described; these can be attributed to increases in habitat and food availability following the eradication of rabbits. In the light of these observations, projected changes are discussed and recommendations made for management.