Production, food consumption and food habits by groups of small, mixed and large sizes of cutthroat trout were studied in enriched and unenriched sections of the Berry Creek Experimental Stream, Oregon State University. Continuous introduction of sucrose and urea to portions of the stream resulted in heavy growth of Sphaerotilus...
The behavior of two species of stream salmonids, juvenile coho salmon, Oncorhynchus kisutch (Walbaurn) and cutthroat trout, Salmo clarki clarki Richardson, was studied in terms of the time spent by individual fish in carrying out various activities. Studies were conducted from June 1968, through May 1969, at Berry Creek, a...
The fungus Verticillium dahliae Kleb. causes a wilt disease of
peppermint, Mentha pipertita L. Propane flaming of peppermint
stubble is widely used to control Verticillium wilt in the Willamette
Valley of Oregon, but little is known about the temperature required
for effective control of the fungus.
The purposes of this...
Ecological restoration programs often attempt to maintain or enhance ecosystem services (ES), but fine-scale
maps of multiple ES are rarely available to support prioritization among potential projects. Here we use agency
reports, citizen science, and social media as data sources to quantify the spatial distribution of five recreational
elements of...
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Society of America
n WebReferences
Allan JD, McIntyre PB, Smith SDP, et al. 2013. Joint analysis of
Ecological restoration programs often attempt to maintain or enhance ecosystem services (ES), but fine-scale
maps of multiple ES are rarely available to support prioritization among potential projects. Here we use agency
reports, citizen science, and social media as data sources to quantify the spatial distribution of five recreational
elements of...
Full Text:
in the
Laurentian Great Lakes
Allan, J. D., Smith, S. D., McIntyre, P. B., Joseph, C. A., Dickinson
Double excitonic absorption peaks are observed in textured BaCuSF and BaCuSeF thin films. The excitonic doublet separation increases with increasing fraction of heavy chalcogen in the thin-film solid solutions, in good agreement with the spin-orbit splitting of the valence bands calculated by density-functional theory. In BaCuSF and BaCuSeF, the excitons...
We report measurements of the structural, optical, transport, and magnetic properties of single crystals of the
anisotropic p-type transparent semiconductor CuAlO₂. The indirect and direct band gaps are 2.97 and 3.47 eV,
respectively. Temperature-dependent Hall measurements yield a positive Hall coefficient in the measured range
and an activated carrier temperature...
This analysis concerns the life and scientific work of Henry
Augustus Rowland (1848-1901), organizer and the first chairman of
the physics department at The Johns Hopkins University in 1876.
Special materials used in this research included three pieces of
Rowland's experimental apparatus which are extant in the Smithsonian
Institution Division...
The Nearctic species of the genus Sympherobius
Banks are revised. Seventeen species are recorded from
the region. Two new species, S. constrictus and S.
quadricuspis are described from California and Arizona
respectively. Four new specific synonyms are proposed
(junior synonym(s) first): S. brunneus Nakahara and S.
stangei Nakahara = S....
Currently little is known about the mechanisms and locations of
lymphocyte development in teleosts. In this study several aspects of the
underlying factors which govern B lymphocyte development in trout
were investigated which included: the isolation and characterization of
immunoglobulin heavy chain (IgH) genes, the recombination activating
genes 1 and...