United States Geological Survey Nonindigenous Aquatic Species Database
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资源简介：
The Nonindigenous Aquatic Species Database (NAS) information resource is an established central repository for spatially referenced biogeographic accounts of introduced aquatic species. The NAS website provides scientific reports, online/real-time queries, spatial data sets, distribution maps, fact sheets, and general information.
创建时间：
2025-09-16
