. Draft environmental impact statement for the interagency bison management plan for the state of Montana and Yellowstone National Park. American bison; American bison; American bison; Brucellosis in animals; Brucellosis in animals. PURPOSE OF AND NEED FOR ACTION given preference over livestock on grazing lands adjacent to Yellowstone National Park. Livestock grazing is a legally authorized activity on many public lands, and these issues are beyond the scope of this environmental impact statement, although modifications in public allotments on the Gallatin National Forest are part of alternati


. Draft environmental impact statement for the interagency bison management plan for the state of Montana and Yellowstone National Park. American bison; American bison; American bison; Brucellosis in animals; Brucellosis in animals. PURPOSE OF AND NEED FOR ACTION given preference over livestock on grazing lands adjacent to Yellowstone National Park. Livestock grazing is a legally authorized activity on many public lands, and these issues are beyond the scope of this environmental impact statement, although modifications in public allotments on the Gallatin National Forest are part of alternatives 2 and 3. Bison should be listed as a threatened or endangered species. The agencies do not believe that bison as a species meet the criteria for listing under the Endangered Species Act. Vegetation and vegetative communities. The bison diet consists of sedges and grasses, and these plant communities may experience small changes if population numbers in any one area were to increase or decrease dramatically for a long period of time, , if bison density were to change. Bison would also exert a more intense impact on vegetation in capture facilities and quarantine areas through trampling. Building facilities and associated structures would also result in the removal of some vegetation as land is cleared for construction. Surveys would be conducted before these facilities are built to ensure no threatened, endangered, or sensitive plant species are present. Otherwise, impacts on vegetative communities to build capture and quarantine facilities proposed in the alternatives are negligible compared to total similar vegetation in the study area. On the Gallatin National Forest, standards for range condition will be met in accordance with the Gallatin National Forest Plan (p. G-14). This issue will not be evaluated further. Overpopulation of humans. Concern exists that wildlife and wildland are primarily threatened by "encroaching civilization" and increasingly intensi


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