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Creator:: Kagan, James S., Christy, John A., Murray, Michael P., Titus, Jonathan A., Oregon Natural Heritage Information Center, and Institute for Natural Resources
Abstract:: 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 as an index to the diversity, distribution and relative rarity of the state's native plant associations, and...
Resource Type:: Technical Report
Full Text:: – January 2004 James S. Kagan, John A. Christy, Michael P. Murray, and Jonathan A. Titus: Oregon Natural

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:: , Institute for Natural Resources Portland State University January 2013 2 Summary In

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

Creator:: Christy, John A., Oregon Natural Heritage Information Center, and Institute for Natural Resources
Abstract:: 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 from 1,992 plots distributed throughout the study area. Descriptions are provided for eight other plant associations for which...
Resource Type:: Technical Report
Full Text:: ASSOCIATIONS OF NORTHWESTERN OREGON John A. Christy Oregon Natural Heritage

Creator:: USDA Forest Service Pacific Northwest Region, McCain, Cindy, Christy, John A., Oregon Natural Heritage Information Center, and Institute for Natural Resources
Abstract:: 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 the CD that accompanies this book. The information is also available for reference or to download as a...
Resource Type:: Technical Report
Full Text:: , Hunt Institute for Botanical Documentation, Carnegie Mellon University, Pittsburgh, PA. 1

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:: Center, Institute for Natural Resources, Portland State University and Philip K. Gaddis August

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:: Center, Institute for Natural Resources Portland State University July 2016 1

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:: Wetlands Conservancy and Oregon Biodiversity Information Center, Institute for Natural Resources

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:: Biodiversity Information Center, Institute for Natural Resources, Portland State University August 2015

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