Index Catalog // ScholarsArchive@OSU

Wet Meadow Plant Associations, Double O Unit, Malheur National Wildlife Refuge, Harney County, Oregon

Creator:: Christy, John A.
Abstract:: This report summarizes vegetation data collected in July 2015 in wet meadow and marshy habitats on the Double O Unit of Malheur National Wildlife Refuge (MNWR). Because vegetation sampled at the Double O was wetter and more alkaline than wet meadows sampled at the south end of the refuge in...
Resource Type:: Technical Report
Full Text:: , HARNEY COUNTY, OREGON John A. Christy Oregon Biodiversity Information

History, Current Conditions, and Wetland Restoration at Killin Wetlands Natural Area, Washington County, Oregon

Creator:: Christy, John A.
Abstract:: In September 2014, the Metro Natural Area Program engaged The Wetland Conservancy to develop a scientific assessment of Metro’s 590-acre Killin Wetlands Natural Area. Metro acquired the lands comprising the KWNA between 2000 and 2012 with funds from two voter approved open space bond measures. Since 2000, Metro has sought...
Resource Type:: Technical Report
Full Text:: AREA, WASHINGTON COUNTY, OREGON John A. Christy The Wetlands Conservancy and Oregon

Sphagnum fens on the Oregon coast: diminishing habitat and need for management

Creator:: Christy, John A.
Abstract:: Oregon Natural Heritage Information Center Report. Sphagnum fens on the coast of Oregon are unique globally and contain a variety of rare plants and animals found nowhere else in the landscape. Evidence indicates that in the absence of disturbance, many open fens have converted to tall shrub and forest stands...
Resource Type:: Technical Report
Full Text:: OREGON COAST: DIMINISHING HABITAT AND NEED FOR MANAGEMENT John A. Christy Oregon Natural

Rare Plant Associations, Oregon Dunes National Recreation Area, Sutton Recreation Area, and Heceta Sand Dunes ACEC/ONA

Creator:: Christy, John A.
Abstract:: In 2011, USFS requested the services of Portland State University's Oregon Biodiversity Information Center (ORBIC) to update its assessment of rare plant associations that occur on coastal sand dunes. The study area in this report includes dune habitats on the Siuslaw National Forest's Oregon Dunes National Recreation Area (NRA), the...
Resource Type:: Technical Report
Full Text:: Dunes ACEC/ONA John A. Christy Oregon Biodiversity Information Center, Institute for Natural

Wet Meadow Plant Associations, Malheur National Wildlife Refuge, Harney County, Oregon

Creator:: Christy, John A.
Abstract:: Report by Portland State University's Oregon Biodiversity Information Center (ORBIC), part of the Oregon University System's Institute for Natural Resources.
Resource Type:: Technical Report
Full Text:: , HARNEY COUNTY, OREGON John A. Christy Oregon Biodiversity Information Center

Unpublished wetland plot data recorded in southwestern Oregon. Interim report.

Creator:: Titus, Jonathan
Abstract:: As of September 2017, most information about wetland plant associations in southwestern Oregon can only be found in unpublished reports that are not available in libraries or on the Internet. Jon Titus's unpublished summaries of plot data from vernal pools, serpentine fens, and other wetlands that he sampled in the...
Resource Type:: Technical Report
Full Text:: Detrended Correspondence Analysis (DCA). Edits made by John Christy in 2017 are given in square brackets

Existing Vegetation and Site Observations at Killin Wetland, Washington County, Oregon

Creator:: Christy, John A. and Garvey, Megan
Abstract:: The history, current condition, and options for restoration at Metro's Killin Wetland were outlined recently by Christy (see citation information below). As part of the site evaluation, Metro requested an inventory of Killin Wetland, which is presented here with information on other miscellaneous features observed that may be of interest...
Resource Type:: Technical Report
Full Text:: OBSERVATIONS AT KILLIN WETLAND, WASHINGTON COUNTY, OREGON John A. Christy and Megan Garvey The

Historical and Existing Vascular and Bryophyte Flora, Former Blue Heron Paper Mill, Willamette Falls, Oregon City, Oregon: Technical Memo to Metro

Creator:: Christy, John A. and Gaddis, Philip K.
Abstract:: Willamette Falls has long been a focus of botanical interest, but industrial development at the site has limited public access for over a century. The closure of the Blue Heron paper mill on the south bank of the river, and proposed redevelopment of the site, has given planners an opportunity...
Resource Type:: Technical Report
Full Text:: MILL, WILLAMETTE FALLS, OREGON CITY, OREGON John A. Christy Oregon Biodiversity Information

Urbanizing Flora of Portland, Oregon, 1806-2008.

Creator:: Christy, John A., Kimpo, Angela, Marttala, Vernon, Gaddis, Philip K., and Christy, Nancy L.
Abstract:: Second printing with corrections and additions, December 2009.
Resource Type:: Technical Report
Full Text:: URBANIZING FLORA OF PORTLAND, OREGON, 1806-2008 John A. Christy, Angela

Classification of Native Vegetation of Oregon - 2019

Creator:: Kagan, James S., Brunner, Rachel L., and Christy, John A.
Abstract:: This classification is an update of the 2004 classification of native vegetation of Oregon by Kagan, Christy, Murray and Titus. As before, this classification lists the native plant associations known to occur in Oregon, and includes both successional and climax vegetation types that were part of the presettlement landscape of...
Resource Type:: Technical Report
Full Text:: VEGETATION OF OREGON – 2019 James S. Kagan, Rachel L. Brunner, and John A. Christy: Oregon Biodiversity

ScholarsArchive@OSU

Wet Meadow Plant Associations, Double O Unit, Malheur National Wildlife Refuge, Harney County, Oregon

History, Current Conditions, and Wetland Restoration at Killin Wetlands Natural Area, Washington County, Oregon

Sphagnum fens on the Oregon coast: diminishing habitat and need for management

Rare Plant Associations, Oregon Dunes National Recreation Area, Sutton Recreation Area, and Heceta Sand Dunes ACEC/ONA

Wet Meadow Plant Associations, Malheur National Wildlife Refuge, Harney County, Oregon

Unpublished wetland plot data recorded in southwestern Oregon. Interim report.

Existing Vegetation and Site Observations at Killin Wetland, Washington County, Oregon

Historical and Existing Vascular and Bryophyte Flora, Former Blue Heron Paper Mill, Willamette Falls, Oregon City, Oregon: Technical Memo to Metro

Urbanizing Flora of Portland, Oregon, 1806-2008.

Classification of Native Vegetation of Oregon - 2019

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