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"Idaho and Southwestern Montana Greater Sage-Grouse Land Use Plan Amendment and Environmental Impact Statement"


Records from "Idaho and Southwestern Montana Greater Sage-Grouse Land Use Plan Amendment and Environmental Impact Statement":

Page 1  [Records 1 through 5 of 5]
Biologically Significant Units for Calculating Anthropogenic Disturbance and Adaptive Management Habitat Trigger for the Idaho and Southwestern Montana Greater-Sagegrouse FEIS
U.S. Department of the Interior (DOI), Bureau of Land Management (BLM), Idaho State Office

The biologically significant unit (BSU) is a geographical/spatial area within greater sage-grouse habitat that contains relevant and important habitats which is used as the basis for comparative calculations to support evaluation of changes to habitat. This BSU unit, or subset of this unit is used in the calculation of the anthropogenic disturbance threshold and in the adaptive management habitat trigger. While the BSU defines the geographic extent and scale of these two measures, how they are calculated differs based on the specific measures to reflect appropriate assessment and evaluation as supported by scientific literature.

Biologically Significant Unit (BSU)

There are 10 BSUs for the Idaho and Southwestern Montana GRSG EIS sub-region. For the Idaho and Southwestern Montana Greater Sage-Grouse Plan Amendment FEIS the biologically significant unit is defined as: a geographical/spatial area within greater sage-grouse habitat that contains relevant and important habitats which is used as the basis for comparative calculations to support evaluation of changes to habitat.

Idaho: BSUs include all of the Idaho Fish and Game modeled nesting and delineated winter habitat, based on 2011 inventories within Priority and/or Important Habitat Management Area of the Administrative Draft Proposed Plan (ADPP)) within a Conservation Area. There are eight BSUs for Idaho identified by Conservation Area and Habitat Management Area: Idaho Desert Conservation Area - Priority; Idaho Desert Conservation Area - Important; Idaho Mountain Valleys Conservation Area - Priority; Idaho Mountain Valleys Conservation Area - Important; Idaho Southern Conservation Area - Priority; Idaho Southern Conservation Area - Important; Idaho West Owyhee Conservation Area - Priority; and Idaho West Owyhee Conservation Area - Important.

Raft River : Utah portion of the Sawtooth National Forest, 1 BSU. All of this areas was defined as Priority habitat in the ADPP. Raft River - Priority

Montana: All of the Priority Habitat Management Area. 1 BSU. SW Montana Conservation Area - Priority

Habitat Management Area

The Habitat Management Area is a coordinated delineation of sage-grouse Management Areas between Idaho BLM, U.S. Forest Service, State of Idaho and the U.S. Fish and Wildlife Service, based on considerations of sage-grouse occupancy, landscape, habitat and land use/adaptive management opportunities. Priority Areas have the highest conservation value based on various sage-grouse population and habitat considerations and reflect the most restrictive management designed to promote sage-grouse conservation. Important zones are closely aligned with Priority, but management is somewhat less restrictive, providing additional management flexibility. The General management zone designation is the least restrictive due to generally lower occupancy of sage-grouse and more marginal habitat conditions.

Conservation Areas

Idaho-Montana Greater Sage-Grouse Conservation Areas for the Idaho and Southwestern Greater Sage-Grouse (GRSG) Final Environmental Impact Statement (FEIS). The Conservation Areas are seamless and cover the extent of the Idaho-SW Montana GRSG EIS. They include non-habitat as well as habitat identified in ADPP alternatives and in Alternatives A-F. The Sage-grouse Conservation Areas are intended to be used for summarizing sage-grouse habitat and form the geographic basis for evaluating disturbance density and adaptive management strategies. The Idaho Governor's Conservation Areas were used as the foundation for this layer.

There are five Greater Sage-Grouse Conservation Areas in the EIS boundary. They include non-habitat as well as habitat: Idaho Mountain Valleys Conservation Area, Idaho Desert Conservation Area, Idaho Southern Conservation Area, Idaho West Owyhee Conservation Area, and the Southwestern Montana Conservation Area. The Raft River Unit in Utah managed by the Sawtooth National Forest was grouped with the Idaho Southern Conservation Area. The areas in Southwestern Montana were grouped as the Southwestern Montana Conservation Area. Metadata for the Conservation Areas can be found in the description of Conservation Areas used in the FEIS.

Anthropogenic Disturbances include :

  • Oil and Gas Well and Development Facilities

  • Coal Mines

  • Wind Towers

  • Solar fields

  • Geothermal Development Facilities

  • Active Locatable, Leasable and Saleable Developments

  • Roads

  • Railroads

  • Powerlines

  • Communication Towers

  • Other Vertical Structures

  • Other Developed Righs-of-Ways

  • Undergound Pipelines

  • Coal Bed Methance Ponds

  • Meteorological Towers

  • Nuclear Energy Facilities

  • Airports

  • MilitaryRanges

  • Hydropower plans

  • Reacreation Areas

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Greater Sage- Grouse (Centrocercus urophasianus) Winter Habitat for the Idaho and Southwestern Montana Greater Sage-Grouse Final Environmental Impact Statement
U.S. Department of the Interior (DOI), Bureau of Land Management (BLM), Idaho State Office

Greater Sage-Grouse (Centrocercus urophasianus) Winter Habitat as mapped by the Idaho Department of Fish and Game (IDFG) for the Idaho and Southwestern Montana Greater Sage-Grouse Final Environmental Impact Statement (FEIS). Data is limited to Idaho. Winter was defined as December 1 - February 28. This layer includes IDFG Nesting habitat that overlaps winter habitat. See processing steps for how IDFG developed spatial data for GRSG winter habitat.

In Montana (Dillon Field Office) winter habitat use by Greater Sage-Grouse (GRSG) is highly variable due to snow pack and can change year to year. Spatial data depicting GRSG winter for the Dillon Field Office is not available. It is primarily encompasses within the Priority Habitat Management Areas. Elevation in the Raft River Unit of the Sawtooth National Forest in Utah precludes GRSG winter habitat.

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Greater Sage-Grouse (Centrocercus urophasianus) Nesting and Late Brood Rearing Habitat for the Idaho and Southwestern Montana GReater Sage-Grouse Final Environmental Impact Statement
U.S. Department of the Interior (DOI), Bureau of Land Management (BLM), Idaho State Office

Greater Sage-Grouse (Centrocercus urophasianus) nesting and late brood rearing habitat for the Idaho and Southwestern Montana Greater Sage-Grouse Final Environmental Impact Statement (FEIS). For purposes of the analysis, it is defined as the extent of mapped nesting habitat derived by the use of a 10 km (6.2 mile) buffer around active leks to capture approximately 80% of nests (Connelly et. al 2013; Idaho Department of Fish and Game (IDFG) 2012 unpublished data, Montana BLM Dillon Field Office 2014 unpublished data; and U.S. Forest Service 2014 unpublished data). Breeding habitat is inclusive of lek, nesting, and early brood-rearing habitat (Connelly et. al 2000). Late brood-rearing (i.e. summer) habitat has not been mapped in detail for the Idaho and Southwestern Montana Subregion (IDMT), but it is assumed for purposes of the analysis, that these areas are largely encompassed by and embedded within the mapped or estimated nesting habitat areas. Buffered Lek data for Idaho, Montana (Dillon Field Office), and the Raft River Unit of the Sawtooth National Forest in Utah were combined to create this layer. For Idaho, the portion of winter habitat that overlaps nesting habitat is included in this data.See procesing steps.

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Idaho and South Western Montana Greater Sage Grouse Conservation Areas
U.S. Department of the Interior (DOI), Bureau of Land Management (BLM), Idaho State Office

Idaho-Montana Greater Sage-Grouse Conservation Areas for the Idaho and Southwestern Greater Sage-Grouse (GRSG) Environmental Impact Statement (EIS). The Conservation Areas are seamless and cover the extent of the Idaho-SW Montana GRSG EIS. They include non-habitat as well as habitat/Sage-Grouse Management areas identified in all alternatives. The Sage-grouse Conservation Areas are intended to be used for summarizing sage-grouse habitat and form the geographic basis for evaluating disturbance density and adaptive management strategies. The Idaho Governor's Conservation Areas were used as the foundation for this layer.

The initial boundaries delineated in the Idaho Governor's Conservation areas were expanded to include all lands within the Idaho-SW Montana GRSG EIS boundary, as well as the area in Utah managed by the Sawtooth National Forest, and the area within the Dillon and Butte BLM Field Offices in SW Montana. The area in Utah was merged with the Idaho Southern Conservation Area. The area in SW Montana was grouped as the Southwestern Montana Conservation Area. The Idaho Governor's Conservation Areas were based on Alternative E Habitat. These areas were expanded to include all Greater Sage-Grouse habitat / Greater sage-grouse management areas identified in any of the alternatives, as well remaining areas outside those areas within the Idaho-SW Montana GRSG EIS. Features such as rivers and roads were used to split those areas so that they could be merged with the Conservation Area

There are five Greater Sage-Grouse Conservation Areas in the EIS boundary: Idaho Mountain Valleys Conservation Area, Idaho Desert Conservation Area, Idaho Southern Conservation Area, Idaho West Owyhee Conservation Area, and the Southwestern Montana Conservation Area. The area in Utah managed by the Sawtooth National Forest was grouped with the Idaho Southern Conservation Area. The areas in Southwestern Montana were grouped as the Southwestern Montana Conservation Area.

The Mountain Valleys Conservation Area is located north of the Snake River, and includes the Sage-grouse West-Central population area. It extends west from Rexburg, north and west of Highway 33 to Howe, north and west of Highway 33/22 to Arco, north and west of Highway 26/20/93 to Carey, north and west of Highway 20 to Hill City, north and west of Highway 20 to the Dylan Karaus Road, west to Canyon Creek. Canyon Creek to the confluence with the Snake River form the western boundary of the Mountain Valleys Conservation Area.

The Desert Conservation area is located north of the Snake River and south of the Mountain Valleys Conservation Area. It extends from the confluence of the Canyon Creek and Snake RIvers, eastward to Idaho Falls. The Snake River and Henry's Fork form the eastern boundary of the Desert Conservation Area.

The West Owyhee Conservation Area is located south of the Snake River and west of the Bruneau River.

The Southern Conservation Area is located south of the Snake River and east of the Bruneau River, including East Idaho Uplands and Bear Lake Plateau, and the area in Utah managed by the Sawtooth National Forest.

Southwestern Montana Conservation Area is located in southwestern Montana, encompassing the BLM Dillon and Butte Field Offices.

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Sagebrush Focal Areas 20150501
U.S. Department of the Interior (DOI), Bureau of Land Management (BLM), Idaho State Office

Sagebrush Focal Areas (SFAs) are a refinement of Greater Sage Grouse habitat delineating the most valuable habitat to the Greater Sage Grouse (Centrocercus urophasianus). They are a subset of the "Highly Important Landscapes" identified by the US Fish and Wildlife Service October, 2014. This dataset is a further refinement of the data layer, "SFA_Draft_January_2015_DIS" released by the Bureau of Land Management (BLM) National Operations Center (NOC) in January, 2015. The SFAs were identified to further protect highly valuable sage grouse habitat and develop conservation strategies as described in the Administrative Draft Proposed Plan (ADPP) for the Idaho and Southwestern Montana Greater Sage Grouse Environmental Impact Statement. Areas within SFAs will be managed as Priority Habitat Management Areas (PHMA) and may include areas of non-habitat. The lineage section describes the processing that was done to the, "SFA_Draft_January_2015_DIS" layer. No SFA was delineated in the SW Montana or USFS Raft River Unit in Utah for the Idaho and SW Montana GRSG Sub-region.

Three areas of Non-Habitat managed by the BLM or USFS are included at the direction of the Washington Office. These include an area in and adjacent to the BLM Donkey Hills ACEC, approximately 12,400 acres; 4,900 acres manged by the USFS in the Lost River Range decribed as Borah Peak, and 6,800 acres of USFS manged lands described as Big Flat Top Mountain/ Copper Basin Knob. It does not include all PHMA identified by the Idaho and Southwestern Montana sub-region. It is limited to BLM and USFS managed lands.

Within Idaho, areas removed from the original layer provided by the NOC, 842,900 acres

75,800 acres BLM Non-Habitat, 61,800 acres within Wilderness Study Areas

9,600 acres BLM IHMA (800 in Great Rift WSA, 8,800 east of Creaters NM adjacent to PHMA)

1,600 acres BLM GHMA, in the Great Rift and Cedar Butte WSAs

300 acres USFS Non-Habitat

460,700 acres National Park Service Non-Habitat in Craters of the Moon NM

200 acres DOE (INL) PHMA

26,200 acres Other Federal Lands PHMA (USDA Sheep Research Station)

12,400 acres US Fish and Wildlife Service managed lands Non-Habitat in the Minidoka National Wildlife Refuge

300 acres Military Non-Habitat

127,200 acres Idaho State lands PHMA

2,200 acres Idaho State lands Non-Habitat

121,100 acres Private lands in PHMA

100 acres in Private IHMA

5,100 acres in Private, non-habitat

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