I evaluated the response of the federally listed endangered plant species Bradshaw's desert parsley (Lomatium bradshawii) to livestock grazing and small mammal depredation at Oak Creek, Linn County, Oregon, 1997-1998. I established six study blocks (three each in wooded and herbaceous pastures) with plots in each block randomly assigned to...
In the highly competitive animal protein market, seafood faces increasing pressure to improve and standardize product quality. While there is general consensus that quality can be improved for many seafood products, there is little agreement on the types and levels of characteristics that should define "quality." This is a fundamental...
Coarse woody debris (CWD) decomposition in the Russian boreal forests of the southern taiga zone was studied at four sites located near St. Petersburg in Northwestern Russia, Krasnoyarsk in Eastern Siberia, lrkutsk in the Baikal region, and Khabarovsk in the Russian Far East. This study was part of a broader...
Geochemical characterization methods are commonly used in the reconstruction of prehistoric raw material use and procurement systems. Trace element studies of lithic source material and artifacts, specifically those made of obsidian, can reveal important information about the environmental and cultural factors which influence the prehistoric distribution of raw material. The...
A method is described for determining the partition coefficient, K, for radon gas
distributed between an aqueous phase and an organic solvent. The method uses
sequential extractions of radon into equal volume aliquots of organic solvent. The
radon-laden organic liquid is then counted on a liquid scintillation analyzer with alpha-beta...
The purpose of this research was to analyze the available pesticide poisoning data in Oregon from 1994 to 1998 in order to obtain a descriptive account of general incident information and of occupational exposures. These data were to be used by the Pesticide Analytical and Response Center for planning preventive...
Tillamook Bay is used for recreational activities such as swimming and diving, as well as recreational clam harvesting. The bay is also used for one of Tillamook's most prominent industries, oyster harvesting. Bacterial contamination of Tillamook Bay has been a recognized problem since 1962. There are a number of known...
The encroachment of western juniper into mountain big sagebrush plant communities and the subsequent development of juniper stands results in significant changes in vegetation structure and complexity. This study described and compared vegetative structure and bird community measures among four cover types representing a broad range of structural stages among...
Fishery dependent data--length distributions, sex ratios, maturity schedules, and species composition of landed catches--are necessary for stock assessments. These data are currently collected by state port biologists using a sampling design that randomly selects samples from a small percentage of a very large target population. Sampling programs may need to...
The Pacific Salmon Treaty was established by Canada and the United States
to secure sustainability of salmon harvests within the Pacific Northwest. Renewed
in June 1999, the treaty functions to legitimize and empower the Pacific Salmon
Commission as the agent of fishery sustainability. The Pacific Salmon
Commission serves as a...