01896nam 2200457 450 991071399290332120200924133447.0(CKB)5470000002505729(OCoLC)1197636637(EXLCZ)99547000000250572920200924d2014 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierThresholds for protecting Pacific Northwest ecosystems from atmospheric deposition of nitrogen state of knowledge report /Tonnie Cummings [and seven others]Fort Collins, Colorado :U.S. Department of the Interior, National Park Service, Natural Resource Stewardship and Science,2014.1 online resource (vii, 45 pages) color illustrations, color mapsNatural resource report ;NPS/PWRO/NRR--2014/823"NPS 963/125045, July 2014"--Page ii."Experience your America"--Page 4 of cover.Includes bibliographical references (pages 34-41).Thresholds for protecting Pacific Northwest ecosystems from atmospheric deposition of nitrogen National parks and reservesNorthwest, PacificAtmospheric depositionNorthwest, PacificAcidificationAtmosphericsNorthwest, PacificNational parks and reservesAtmospheric depositionAcidification.Atmospherics.Cummings Tonnie1390650United States.National Park Service.Natural Resource Stewardship and Science,GPOGPOBOOK9910713992903321Thresholds for protecting Pacific Northwest ecosystems from atmospheric deposition of nitrogen3493934UNINA