Focus is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Despite evidence that juvenile Chinook salmon (Oncorhynchus tshawytscha) utilize North Pacific estuaries for growth and salinity acclimation, research in the Columbia River estuary has lead to opposing hypotheses about the estuary’s importance as a salmon rearing environment. Many contemporary tagging studies indicate that salmon residency within the estuary is short...
Refractory inclusions from Kaba (CV3) chondrite were studied by
instrumental neutron activation analysis (INAA) and electron probe
microanalysis (EPMA). The inclusions observed cover a wide range of
chemical patterns, mineral assemblages and textures, indicating the
complexity of early solar nebular conditions. The elemental
abundances normalized by Cl chondritic abundances vary...
Fish scales have long been used to reconstruct fine-scale habitat transitions such as the movement of juvenile fish from freshwater, estuary, and ocean environments. Despite the importance of life history information to fisheries management and conservation, few studies have validated that scale morphology accurately describes fish movement between these habitats....
Wheat (Triticum aestivum L.) is one of the major crops produced in the U.S. Pacific Northwest, a region known for its wheat production for international export. Wheat production in the region is threatened by diseases such as Cephalosporium stripe and stripe rust. Cephalosporium stripe is a vascular wilt disease of...
Research conducted on humpback whitefish Coregonus pidschian in the Copper River Delta, Alaska has revealed a complex life history involving seasonal migrations and the occupation of a variety of freshwater and marine habitats including lacustrine, riverine, estuarine, and marine. Forty-five whitefish were tagged with radio transmitters in 2006 and 2007,...
Published November 1936. 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
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...