Abstract
The Effect of Three Gorge Project on the Small Mammals in Yangtze River of China
Highlights
China has the richest hydro resources on the planet; the development of hydropower is of great importance to alleviate the energy crisis and environmental pollution resulting from this country’s rapid economic growth during the 21st century [1,2]
Studies from the Dongting Lake and Poyang Lake showed more species of the small mammal immigrated to the beaches of lakes during the dry season
When flooding would normally occur, small mammals occupying beach habitats would be forced to aggregate on the dikes and migrate to farmland areas [58], with high population numbers potentially causing severe damage/losses to crops, as well as presenting a health hazard to humans
Summary
China has the richest hydro resources on the planet; the development of hydropower is of great importance to alleviate the energy crisis and environmental pollution resulting from this country’s rapid economic growth during the 21st century [1,2]. It was predicted that the regulation of water flow by the TGR might reduce water levels in fall and increase the amount of time that M. fortis had access to its preferred beach habitats, which would, result in larger vole populations and greater damage to surrounding crops [51,52]. The percentage represented by the vole in species compositions has declined compared to that before dam operation, due to the immigration of other species, the striped field mouse (A. agrarius) and the Norway rat (R. norvegicus), to beaches that were previously uninhabitable because of seasonally high water levels in the Dongting Lake region [54]. Based on the similar structuring of the small mammal communities on the farmland and beach habitats of the Dongting Lake and Poyang Lake regions, the potential impact of the TGP on downstream lakes should be incorporated into future ecological impact assessments
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