INDICATOR MEASURE DATA SOURCES

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1 UNTRAMMELED QUALITY Wilderness is essentially unhindered and free from modern human control or manipulation actions that control or manipulate the earth and its community of life Actions authorized by the Federal land manager that manipulate the biophysical environment Actions not authorized by the Federal land manager that manipulate the biophysical environment Number of actions to manage plants, animals, pathogens, soil, water, or fire Percent of natural fire starts that received a suppression response Number of lakes and other water bodies stocked with fish Number of unauthorized actions by agencies, citizen groups, or individuals that manipulate plants, animals, pathogens, soil, water, or fire Minimum Requirements analyses Agency data systems National fire data systems State agencies Law enforcement data systems (if available) Other federal and state agency data systems Record cards from other staff and

2 NATURAL QUALITY Wilderness ecological systems are substantially free from the effects of modern civilization terrestrial, aquatic, and atmospheric natural Plant and animal species and communities Physical Abundance, distribution, or number of indigenous species that are listed as threatened and endangered, sensitive, or of concern Number of extirpated indigenous species Number of nonindigenous species Abundance, distribution, or number of invasive non-indigenous species Number of acres of authorized active grazing allotments and number of animal unit months (AUMs) of actual use Change in demography or composition of communities Visibility based on average deciview and sum of anthropogenic fine nitrate and sulfate Ozone air pollution based on concentration of N100 episodic and W126 chronic ozone exposure affecting sensitive plants Acid deposition based on concentration of sulfur and nitrogen in wet deposition change in water quality human-caused stream bank erosion Remote sensing (satellite imagery, aerial photography) (for particular places of concern) National IMPROVE data National EPA AIRS data National CASTNET data National NADP/NTN data Water quality monitoring stations

3 NATURAL QUALITY Wilderness ecological systems are substantially free from the effects of modern civilization terrestrial, aquatic, and atmospheric natural processes Biophysical processes disturbance or loss of soil or soil crusts Departure from natural fire regimes averaged over the global climate change Area and magnitude for pathways for movement of non-indigenous species into the Area and magnitude of loss of connectivity with the surrounding landscape National LANDFIRE modeling program National RAWS data stations National MODIS satellite imagery National SNOTEL data stations Historical/recent photo pairs State agencies and other partners State agencies and other partners

4 UNDEVELOPED QUALITY Wilderness retains its primeval character and influence, and is essentially without permanent improvement or modern human occupation nonrecreational development mechanization cultural Non-recreational structures, installations, and developments Inholdings Use of motor vehicles, motorized mechanical transport Loss of statutorily protected cultural Index of authorized physical development Index of unauthorized (user-created) physical development Area and existing or potential impact of inholdings administrative and nonemergency use of motor vehicles, motorized mechanical transport emergency use of motor vehicles, motorized mechanical transport motor vehicle, motorized mechanical transport use not authorized by the Federal land manager Number and severity of disturbances to cultural for unauthorized structures and developments Record cards and photopoints

5 SOLITUDE OR PRIMITIVE AND UNCONFINED RECREATION QUALITY Wilderness provides outstanding opportunities for solitude or primitive and unconfined recreation outstanding opportunities for solitude outstanding opportunities for primitive and unconfined recreation Remoteness from sights and sounds of people the Remoteness from occupied and modified areas outside the Facilities that decrease selfreliant recreation Management restrictions on visitor behavior Amount of visitor use Number of trail contacts Number and condition of campsites Area of affected by access or travel routes that are the Area of affected by access or travel routes that are adjacent to the Night sky visibility averaged over the Extent and magnitude of intrusions on the natural soundscape Type and number of agency-provided recreation facilities Type and number of user-created recreation facilities Type and extent of management restrictions Agency GIS data systems, aerial photography Agency GIS data systems, aerial photography National night sky visibility maps