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DEPARTMENTS jitters are natural and understandable Into
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activities aerial ash in Zion ash yellows ash yetows associated backcountry areas base map biological Biosphere Reserve Boquillas bulk density caves China CIR photos conifers CPSU developed dieback disturbance Ecology ecosys ecosystem effects Ehrenfeld evaluate exotic fire forest health Glacier NP goals goat density growth hantavirus hardwoods helium-3 herbivore Indigenous Seed insects issues karst leaf-off levels long-term Malpais ment methods MLOs mountain goats mylar National Park native Natural Resource noninfected trees normal color ofthe Olym Olympic NP Park Service percent photo interpretation photo mylar overlays plant community plant cover population problems rare plants region of interest relief distortion restoration reveg revegetation river segments Santa Elena scale Scarify Sinclair soil staff tion topsoil trail impacts trail maintenance types users vegetation overlays velvet ash visitor volcanic wallow WASO white ash workshop zebra mussel Zion Canyon Zion National Park Zuni-Bandera volcanic field