Short-term climate change and the extinction of the snail Rhachistia aldabrae (Gastropoda: Pulmonata) |
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Authors: | Gerlach Justin |
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Affiliation: | Nature Protection Trust of Seychelles, 133 Cherry Hinton Road, Cambridge CB1 7BX, UK. jstgerlach@aol.com |
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Abstract: | The only known population of the Aldabra banded snail Rhachistia aldabrae declined through the late twentieth century, leading to its extinction in the late 1990s. This occurred within a stable habitat and its extinction is attributable to decreasing rainfall on Aldabra atoll, associated with regional changes in rainfall patterns in the late twentieth and early twenty-first century. It is proposed that the extinction of this species is a direct result of decreasing rainfall leading to increased mortality of juvenile snails. |
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Keywords: | Mollusca extinction Aldabra atoll rainfall |
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