The California vernal pool-endemic grasses Orcuttia tenuis and Tuctoria greenei, both listed under the U.S. Endangered Species Act, were recently found in Modoc County, California, a short distance south of the Oregon border. This prompted searches in suitable habitats in adjacent portions of the Klamath Basin in Oregon, in the...
This document is a summary of the analysis of the management situation (AMS) and the subbasin review (SBR) for the Lakeview Resource Management Plan. The AMS/SBR compiles in one place important information about existing resource conditions, uses, and demands, as well as existing management activities and opportunities to resolve issues...
A variety of approaches are used in sagebrush conservation. The Sagebrush/Sage Grouse Habitat Metric is one of several ecological measures that have been developed to help managers determine where to invest limited resources and how to calculate the ecological impact and improvement associated with the implementation of conservation actions.
ORNHIC maintains extensive databases of Oregon biodiversity, concentrating on rare and endangered plants, animals and ecosystems. The program is managed by OSU, but has been a
cooperative project, with significant support from The Department of State Lands, The Nature Conservancy in Oregon, USFWS, the Bureau of Land Management (BLM), the...
Once lost, a species can never be recovered, and there is no way of knowing how useful it may have been. We do know that human beings and many of their industries depend on plant and animal products. About 50% of all pharmaceuticals have a natural component as an active...
There are a variety of different approaches are used in the conservation of oak woodlands and savanna. The Oak Habitat Metric is one of several ecological measures that have been developed to help managers determine where to invest limited resources and how to calculate the ecological impact and improvement associated...
Published January 1987. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Western juniper (Juniperus occidentalis) has been actively invading the shrub steppe community for the past 120
years. Active fire suppression, overstocking of livestock in the late 1800's, along with a wetter than normal period in
the latter half of the 19th century, has allowed juniper to encroach into areas where...
The Guano and Thousand-Virgin Sub-basins occupy over 1.8 million acres in Harney and Lake Counties in Oregon. The portions of the sub-basins in Nevada are not assessed in this document. Harney County Watershed Council (HCWC) watershed assessments focus on summarizing data from existing research, resource inventories, and management plans. This...
Rare plant reintroductions are a critical conservation tool for the augmentation of diminishing populations, or re-establishment of extirpated populations. Analysis of reintroduction failures suggests that a sophisticated understanding of species biology, ecology, and habitat is essential for producing self-sustaining rare plant populations. This study sought to generate that background knowledge...
A biological inventory of the butterflies of the H. J. Andrews Experimental Forest [HJA] in Linn/Lane County, Oregon was conducted during 1994 and 1995. It was the first comprehensive survey of HJA butterflies for the site and serves as a baseline for future butterfly research. A detailed ecological account is...