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Browsing by Author "Christy, John A."

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Browsing by Author "Christy, John A."

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  • Classification of native vegetation of Oregon 
    Kagan, James S.; Christy, John A.; Murray, Michael P.; Titus, Jonathan A.; Oregon Natural Heritage Information Center; Institute for Natural Resources (Oregon Natural Heritage Information CenterInstitute for Natural Resources, 2004-01)
    This classification lists the native plant associations known to occur in Oregon, and includes both successional and climax vegetation types that were an important part of the presettlement landscape of Oregon. It serves ...
  • Field guide to riparian plant communities in northwestern Oregon 
    USDA Forest Service Pacific Northwest Region; McCain, Cindy; Christy, John A.; Oregon Natural Heritage Information Center; Institute for Natural Resources (USDA Forest Service Pacific Northwest RegionOregon Natural Heritage Information CenterInstitute for Natural Resources, 2005-01)
    This field guide combines classifications of common streamside plant communities and native freshwater wetland communities in Northwest Oregon. It is a condensed version of two separate works which are both available on ...
  • Historical vegetation of central southwest Oregon, based on GLO survey notes : final report to USDI Bureau of Land Management, Medford District 
    Hickman, O. Eugene; Christy, John A.; The Institute for Natural Resources (Oregon Biodiversity Information Center, 2011-10-31)
    Historical vegetation at the time of European settlement is of great interest to both the public and land managers, but is poorly documented. One source of data are the earliest land survey records of the General Land ...
  • Native freshwater wetland plant associations of northwestern Oregon 
    Christy, John A.; Oregon Natural Heritage Information Center; Institute for Natural Resources (Oregon Natural Heritage Information Center, Oregon State UniversityInstitute for Natural Resources, 2004)
    This guide provides keys, descriptions, and stand tables for 122 native freshwater plant associations (14 forest and woodland, 28 shrub, 78 herbaceous, 2 nonvascular) in northwestern Oregon, based on analysis of data fro ...
  • Native wetland, riparian, and upland plant communities and their biota in the Willamette Valley, Oregon 
    Titus, John H.; Christy, John A.; VanderSchaaf, Dick; Kagan, James S.; Alverson, Edward R. (2006-01-03)
    As part of the Willamette Basin Geographic Initiative Program, the Environmental Protection Agency (EPA) funded The Nature Conservancy of Oregon to inventory, classify, and map native wetland and riparian plant communiti ...
  • New Tools for Tidal Wetland Restoration: Development of a Reference Conditions Database and a Temperature Sensor Method for Detecting Tidal Inundation in Least-disturbed Tidal Wetlands of Oregon, USA. Amended Final Report. 
    Brophy, Laura; Cornu, Craig; Adamus, Paul R.; Christy, John A.; Gray, Ayesha; Huang, Lijuan; MacClellan, Megan; Doumbia, Julie; Tully, Rebecca (Prepared for the Cooperative Institute for Coastal and Estuarine Environmental Technology (CICEET), 2011-08)
    Between 2007 and 2009, researchers from Green Point Consulting, Oregon State University, and the South Slough National Estuarine Research Reserve collected data on ecological and physical characteristics at five high-qua ...
  • Oregon Tidal Wetland Reference Sites Pilot Project : Soils Data 
    Brophy, Laura; Tully, Rebecca; Christy, John A.; Cornu, Craig (2009-02-09)
    This file includes tidal wetland soils data for 14 sampling areas at 5 sites on the Oregon coast. The sites are Blind Slough (tidal swamp) in the lower Columbia River estuary , Coal Creek (tidal swamp) in the Nehalem es ...
  • Pacific Northwest Coast ecoregional assessment 
    Vander Schaaf, Dick; Wilhere, George; Ferdana, Zack; Popper, Ken; Schindel, Michael; Skidmore, Peter; Rolph, Dave; Lachetti, Pierre; Kittel, Gwen; Crawford, Rex; Pickering, Debbie; Christy, John A. (The Nature Conservancy, Portland, Oregon, 2006-08-21)
    This is an integrated assessment across terrestrial, freshwater, and coastal marine realms. It includes the coast range of Oregon and Washington as well as Vancouver Island in British Columbia. The marine portion only in ...
  • Plant associations of the Oregon Dunes National Recreation Area : Siuslaw National Forest, Oregon 
    Christy, John A.; Kagan, James S.; Wiedemann, Alfred M. (United States Department of Agriculture, Forest Service, Pacific Northwest Region, 1998)
  • Rare Plant Associations, Oregon Dunes National Recreation Area, Sutton Recreation Area, and Heceta Sand Dunes ACEC/ONA 
    Christy, John A. (2013-04-29)
    Nine of the ten rare plant associations identified in the dunes in 1993 are recommended for continued inclusion in conservation planning. Large-patch associations are currently in good condition, but small-patch associ ...
  • Urbanizing Flora of Portland, Oregon, 1806-2008. 
    Christy, John A.; Kimpo, Angela; Marttala, Vernon; Gaddis, Philip K.; Christy, Nancy L. (Native Plant Society of Oregon, 2009)
    This is an annotated catalog of the vascular flora of Portland and vicinity. It contains 1,553 taxa in 126 families, and compares the historical flora with changes that have occurred since 1925. Sources included addition ...
  • Wet Meadow Plant Associations, Malheur National Wildlife Refuge, Harney County, Oregon 
    Christy, John A. (Oregon Biodiversity Information Center, Institute for Natural Resources, 2013-01)
    In July 2012, we sampled 131 plots in wet meadow habitat at the southern end of the Malheur National Wildlife Refuge. Analysis of the data identified eleven different plant associations: Alopecurus pratensis, Carex aquat ...

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