Index Catalog // ScholarsArchive@OSU

Classification strategies for unbalanced binary maps : finding Ponderosa pine in the Willamette Valley

Creator:: Riddell, Audrey P.
Abstract:: Forest species classifications are becoming increasingly automated as advances are made in machine learning. The algorithms used to identify tree species range from simple decision trees to intricate neural networks, and often excel in accurately delineating tree species. However, complex algorithms can have high input costs, including the cost of...
Resource Type:: Masters Thesis
Full Text:: 25, 2018. Title: Classification strategies for unbalanced binary maps: finding Ponderosa Pine in

A taxonomic revision of Astragalus mokiacensis and allied taxa within the Astragalus lentiginosus complex of Section Diphysi

Creator:: Alexander, J. Andrew
Abstract:: North America, with over 400 species of Astragalus (Fabaceae), is one of three major centers of diversity, all of which comprise the majority of the nearly 1750 species of Astragalus worldwide. One of the most diverse species, Astragalus lentiginosus of Section Diphysi, is a polymorphic complex of over 40 varieties,...
Resource Type:: Dissertation
Full Text:: THESIS OF J. Andrew Alexander for the degree of Doctor of Philosophy in Botany and Plant Pathology

Taxomony and mycorrhizal ecology of the desert truffles in the genus Terfezia

Creator:: Alsheikh, Abdulmagid M.
Abstract:: Mycorrhizal fungi in arid and semiarid rangelands have received little study in southwest Asia and north Africa, although they are important in food production and rangeland productivity. The desert truffles of the genera Terfezia and Tirmania form fruiting-bodies and mycorrhizae with rangeland plants. This thesis treats the taxonomy and the...
Resource Type:: Dissertation
Full Text:: Philosophy in Botany and Plant Pathology presented on July 8. 1994. Title: Taxonomy and Mycorrhizal

Classification of native vegetation of Oregon

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:: Heritage Information Center This classification lists the native plant associations known to occur in

Systematic and reproductive studies of Mimulus (Scrophulariaceae) in the Pacific Northwest : implications for conservation biology

Creator:: Meinke, Robert James
Abstract:: The Mimulus washingtonensis complex is a group of morphologically similar species centered in the Pacific Northwest. All are rare, and most are under consideration for listing as endangered. Morphometric and pollination data were used in developing a revised taxonomy for the group. Five species and two varieties are recognized. Mimulus...
Resource Type:: Dissertation
Full Text:: Robert James Meinke for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on

Field guide to riparian plant communities in northwestern Oregon

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:: to the Streamside Plant Communities Purpose The classification is mainly floristic, that is, it

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:: Program 1996-1998 As of September 2017, most information about wetland plant associations in

Wetland plant associations of the Western Hemlock Zone in the Central Coastal and Cascade Mountains

Creator:: Murray, Michael
Abstract:: This report was derived from field data collected by personnel of the US Forest Service (USFS) and Oregon Natural Heritage Program (ONHP). The area examined encompasses four National Forests (Gifford Pinchot, Willamette, Mt. Hood, and Siuslaw) and two Bureau of Land Management Districts (Salem and Eugene). It does not include...
Resource Type:: Technical Report
Date Created:
Full Text:: classification data she and Jane Kertis had collected from the Willamette and Siuslaw National Forests, with

Non-forest Plant Communities of the Northern Oregon Coast Range and Vicinity Draft Report

Creator:: Glavich, Doug
Abstract:: DRAFT REPORT. In 2013 – 2015, reconnaissance observations were made across non-forest habitats on FS and BLM land in the Coast Range and Cascade foothills within the Salem and Eugene BLM district areas for plant communities that did not fit the USFS Northwest Oregon Non-forest Plant Community guide. Surveys were...
Resource Type:: Technical Report
Full Text:: Plant Community Classification Methods Field 1) In 2013 – 2014, reconnaissance observations

Vegetation and ecological characteristics of mixed-conifer and Red Fir forests at the Teakettle Experimental Forest

Creator:: North, Malcolm, Oakley, Brian, Chen, Jiquan, Erickson, Heather, Gray, Andrew, Izzo, Antonio, Johnson, Dale, Ma, Siyan, Marra, Jim, Meyer, Marc, Purcell, Kathryn, Rambo, Tom, Rizzo, Dave, Roath, Brent, and Schowalter, Tim
Abstract:: Detailed analysis of mixed-conifer and red fir forests were made from extensive, large vegetation sampling, systematically conducted throughout the Teakettle Experimental Forest. Mixed conifer is characterized by distinct patch conditions of closed-canopy tree clusters, persistent gaps and shrub thickets. This heterogeneous spatial structure provides contrasting microclimate, habitat and resource conditions...
Resource Type:: Technical Report
Full Text:: canopy cover, cooler, more consistent microclimate conditions and fewer plant species. In both forests

ScholarsArchive@OSU

Classification strategies for unbalanced binary maps : finding Ponderosa pine in the Willamette Valley

A taxonomic revision of Astragalus mokiacensis and allied taxa within the Astragalus lentiginosus complex of Section Diphysi

Taxomony and mycorrhizal ecology of the desert truffles in the genus Terfezia

Classification of native vegetation of Oregon

Systematic and reproductive studies of Mimulus (Scrophulariaceae) in the Pacific Northwest : implications for conservation biology

Field guide to riparian plant communities in northwestern Oregon

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

Wetland plant associations of the Western Hemlock Zone in the Central Coastal and Cascade Mountains

Non-forest Plant Communities of the Northern Oregon Coast Range and Vicinity Draft Report

Vegetation and ecological characteristics of mixed-conifer and Red Fir forests at the Teakettle Experimental Forest

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