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A distinct population segment is the smallest division of a taxonomic species permitted to be protected under the U.S. Endangered Species Act. ''Species'', as defined in the Act for listing purposes, is a taxonomic species or subspecies of plant or animal, or in the case of vertebrate species, a distinct population segment (DPS). ==Criteria for Designation== The criteria for designation of a population or group of populations as a DPS was most recently articulated in a 1996 joint USFWS-NMFS policy (61 FR 4722: February 7, 1996): Three elements are considered in a decision regarding the status of a possible DPS as endangered or threatened under the Act. These are applied similarly for addition to the lists of endangered and threatened wildlife and plants, reclassification, and removal from the lists: 1. ''Discreteness'' of the population segment in relation to the remainder of the species to which it belongs; 2. The ''significance'' of the population segment to the species to which it belongs; and 3. The population segment’s conservation ''status'' in relation to the Act’s standards for listing (i.e., is the population segment, when treated as if it were a species, endangered or threatened?). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「distinct population segment」の詳細全文を読む スポンサード リンク
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