Nonetheless, about 400 of the 958 species that are listed as threatened or endangered under the Endangered Species Alt are considered to be at risk primarily because of competition with and predation by non-native species.

• 濒危物种法中所列出958种濒危物种中，有约400种被认是主要由于非本土物种的竞争和捕食而处于濒危状态。