I examined the abundance and habitat associations of terrestrial amphibian species and the species richness of terrestrial amphibian communities in riparian buffer strips, clearcuts, and unmanaged riparian forests. The study was conducted in the western hemlock (Tsuga heteropliylla) vegetation zone of the northern and central Oregon Coast Range. Data were...
Organic matter dynamics in riparian ecosystems are largely driven by interactions among hydrology, soil, and vegetation. In two riparian meadows, northeast Oregon, I examined the hypothesis that vegetation and soil characteristics in three plant communities - defined as wet, moist, and dry meadow - were strongly influenced by hydrological and...
In the late 1970s, approximately 400 miles of streams were inventoried by the
Prineville District of the Bureau of Land Management for in-stream and riparian condition.
During the summer of 1994, the riparian portion of the survey was repeated on 17 of the
original streams miles, contained within 11 stream...
Two trials were conducted to evaluate changes in the quantity, quality, and moisture of available forage in the pasture, and shrub utilization by cattle during a 30-d late summer grazing period (Trial 1) and the effect of cow age (experience) on grazing distribution and diet composition (Trial 2) in mountain...
In the fall and winter of 1999/2000, efforts by federal, state, and local agencies to restore salmon habitat by protecting land adjacent to rivers and streams drew intense responses citizens in the Pacific Northwest. Despite efforts to "involve" citizens in the development of riparian protection policies, many did not believe...
Streams make up only one percent of the watershed. Nonetheless, they are an essential component to watershed health. Streams are home to wildlife and fish. Well-functioning streams contribute to water quantity and quality. And streams play an important role in flood and erosion control.
This study investigates riparian cover change between 1939 and 1996 utilizing aerial
photography, bank conditions and stream gauge data. Three sites under 1.0 km2, along a 10-
km reach north of Harrisburg, Oregon, were evaluated. The cover classification scheme
included 18 classes composed of 3 canopy densities and 8 structural...
The Seventh Annual James A. Vomocil Water Quality Conference was planned after three topics had been selected as being of particular interest. Wetlands, Best Management Practices, and Riparian Zone Effectiveness were the topics. Speakers were invited who by virtue of their training, their experience, or their work assignment had insights...
Both policy makers and private landowners have come to recognize the importance of streamside areas in the maintenance of water quality and fish habitat. Because non-industrial landowners own 42% of the streamside area in the Coast Range, their management is a significant factor in the streamside health of Western Oregon....
The growing population of Oregon’s Willamette River Basin places an increasing demand on the basin’s surface waters. Watershed-scale research addressing spatial trends of dissolved nitrogen (DN) and its relationship with landuse and soil N dynamics, such as N mineralization, is sparse in the Willamette Basin. I measured DN along 124...