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NORTHERN ROCKY MOUNTAIN WOLF RECOVERY PLAN

机译:北部岩石山地恢复计划

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摘要

As enacted by Congress, the purposes of the Endangered Species Act are to provide a program for the conservation of such endangered and threatened species as well as a means whereby the ecosystems upon which such species depend may be conserved. The Act also mandates that the Secretary of the Interior shall develop and implement plans for the conservation and survival of endangered and threatened species. It is further declared to be the policy of Congress that all Federal departments and agencies shall seek to conserve endangered and threatened species and shall utilize their authorities in furtherance of the purposes of the Act. The Northern Rocky Mountain Wolf Recovery Plan outlines steps for recovery of gray wolf (Canis lupus) populations in portions of their former range in the Northern Rocky Mountains of the United States. Historical evidence documents the presence of gray wolves throughout the Northern Rocky Mountains of the contiguous United States. This subspecies (Canis lupus irremotus) was a predator on native ungulates under pristine conditions and later , as European Americans spread westward, on domestic livestock. Substantial declines in wolf numbers resulted from control efforts to reduce livestock and big game depredations. Currently, no viable populations of wolves occur in the Rocky Mountains south of Canada, however, at least one pack and several individual animals are known to be present. This plan emphasizes gray wolf recovery through natural processes (dispersal southward from western Canada) where possible. Where this is not possible because of distance from \u22seed\u22 populations, translocation is the only known way to establish a population. Either philosophy necessitates conservation of suitable habitat in appropriate recovery areas. Establishing and maintaining wolf populations in three separate areas is believed necessary for recovery at this time. The probability of recovery through natural recruitment is high in northwestern Montana, moderate in Idaho, and remote in Yellowstone National Park. Characteristically, the recovery areas that have been identified are large and remote, where the potential for conflict situations would generally be limited to their periphery. However, resolution of such conflicts is requisite to successful natural reestablishment and thus is an essential element for recovery.
机译:根据国会的规定,《濒危物种法》的目的是提供一个保护此类濒危和受威胁物种的计划,并提供一种保护此类物种所依赖的生态系统的手段。该法还规定,内政部长应制定和实施保护和濒危物种保护与生存的计划。进一步宣布为国会的政策,所有联邦部门和机构均应寻求保护濒临灭绝和受威胁的物种,并应利用其权力来促进该法案的目的。北部落基山狼恢复计划概述了在美国北部落基山中恢复其先前范围内的部分灰狼(犬天狼疮)种群的步骤。历史证据表明,在美国毗连的落基山脉各处都有灰狼的存在。该亚种(Canis lupus irremotus)在原始条件下是本地有蹄类动物的捕食者,后来,由于欧美人向西传播,他们以家畜为食。减少牲畜数量和减少大型猎物的控制努力,导致狼数量大幅下降。目前,在加拿大南部的落基山脉上没有活着的狼群,但是,已知存在至少一包和几只单独的动物。该计划强调在可能的情况下通过自然过程(从加拿大西部向南扩散)来恢复灰太狼。如果由于与种子种群之间的距离而无法做到这一点,易位是建立种群的唯一已知方法。两种哲学都需要在适当的恢复区保存适当的栖息地。人们认为,目前需要在三个不同的地区建立和维持狼群,以恢复它们。在蒙大拿州西北部,通过自然募集恢复的可能性很高,在爱达荷州则适中,在黄石国家公园则偏远。从特征上说,已经确定的恢复区很大且偏远,那里发生冲突局势的可能性通常仅限于其外围地区。但是,解决这些冲突是成功自然重建的必要条件,因此是恢复的基本要素。

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