Index Catalog // ScholarsArchive@OSU

Daily and alternate day supplementation of urea or soybean meal to ruminants consuming low-quality cool-season forage: II. Effects on ruminal fermentation

Creator:: Cappellozza, B. I., Bohnert, David W., Schauer, C. S., Falck, S. J., Vanzant, E. S., Harmon, D. L., and Cooke, Reinaldo Fernandes
Abstract:: Five ruminally cannulated steers (initial BW=464 ± 26 kg) consuming low-quality forage (5% CP; 78% NDF; DM basis) were used in an incomplete 5 x 4 Latin square with four 18-d periods to determine the influence of supplemental N source and supplementation frequency (SF) on ruminal fermentation dynamics. Treatments, arranged...
Resource Type:: Article
Full Text:: $,$$,% B.I. Cappellozza a, D.W. Bohnert a,n, C.S. Schauer b, S.J. Falck c, E.S. Vanzant d, D.L. Harmon d, R.F

Within-stem variation of respiration in Pseudotsuga menziesii (Douglas-fir) trees

Creator:: Pruyn, Michele L., Gartner, Barbara L., and Harmon, Mark E.
Abstract:: • A technique for measuring in vitro respiration was investigated to understand why rates were higher than those reported in vivo and to elucidate trends within mature Pseudotsuga menziesii (Douglas‐fir) trees. • Extracted increment cores were divided into 3–4 radial depths and a gas chromatograph was used to compare respiration...
Resource Type:: Article
Full Text:: Pseudotsuga menziesii (Douglas-fir) trees Michele L. Pruyn 1 , Barbara L. Gartner 1

Decomposition and nitrogen dynamics of ¹⁵N‑labeled leaf, root, and twig litter in temperate coniferous forests

Creator:: van Huysen, Tiff L., Harmon, Mark E., Perakis, Steven S., and Chen, Hua
Abstract:: Litter nutrient dynamics contribute significantly to biogeochemical cycling in forest ecosystems. We examined how site environment and initial substrate quality influence decomposition and nitrogen (N) dynamics of multiple litter types. A 2.5-year decomposition study was installed in the Oregon Coast Range and West Cascades using ¹⁵N-labeled litter from Acer macrophyllum,...
Resource Type:: Article
Full Text:: temperate coniferous forests Tiff L. van Huysen · Mark E. Harmon · Steven S. Perakis · Hua Chen received

The Rapid Morning Boundary-Layer Transition

Creator:: Lenschow, D. H., Stankov, B. B., and Mahrt, L.
Abstract:: Even slight terrain inhomogeneities can cause large horizontal variations in the clear, stably stratified, nocturnal boundary layer largely through cold air drainage. By early morning the valleys and depressions can be several degrees cooler than the adjacent slopes and plateaus. As surface heating begins in the morning, these horizontal variations...
Resource Type:: Article

Eddy–Mean Flow Interaction in Zonal Oceanic Jet Flow along Zonal Ridge Topography

Creator:: Witter, Donna L. and Chelton, Dudley B.
Abstract:: Motivated by satellite altimeter observations of enhanced sea level variability near steep topographic slopes in the Southern Ocean, effects of topography on the spatial distribution of mesoscale eddies and on eddy–mean flow interaction are investigated using a two-layer, wind-forced, quasigeostrophic channel model. The principal topography, a zonal ridge with a...
Resource Type:: Article
Full Text:: Zonal Ridge Topography DONNA L. WITTER* AND DUDLEY B. CHELTON College of Oceanic and Atmospheric

Large-scale sea surface temperature variability from satellite and shipboard measurements

Creator:: Berstein, R. L. and Chelton, Dudley B.
Abstract:: A series of satellite sea surface temperature (SST) intercomparison workshops were conducted under NASA sponsorship at the Jet Propulsion Laboratory. Three different satellite data sets were compared with each other, with routinely collected ship data, and with climatology for the months of November 1979, December 1981, March 1982, and July...
Resource Type:: Article

Implications of a long-lived basal magma ocean in generating Earth’s ancient magnetic field

Creator:: Ziegler, L. B. and Stegman, D. R.
Abstract:: Observations of Earth’s magnetic field extending back to 3.45 billion years ago indicate that generation by a core dynamo must be sustained over most of Earth’s history. However, recent estimates of thermal and electrical conductivity of liquid iron at core conditions from mineral physics experiments indicate that adiabatic heat flux...
Resource Type:: Article
Full Text:: Earth’s ancient magnetic field L. B. Ziegler College of Earth, Ocean, and Atmospheric Sciences, Oregon

Experimental evidence of fatty acid limited growth and survival in Pacific cod larvae

Creator:: Copeman, L. A. and Laurel, B. J.
Abstract:: Changing environmental conditions in the North Pacific are altering the lipid/fatty acid (FA) composition of zooplankton assemblages, but the consequences to resident fish larvae are unknown. In the laboratory, we reared Pacific cod Gadus macrocephalus larvae over 4 wk on prey enriched with varying levels of 2 essential FAs (docosahexaenoic...
Resource Type:: Article
Full Text:: : lcopeman@mun.ca Experimental evidence of fatty acid limited growth and survival in Pacific cod larvae L

Meta-analysis of avian and small-mammal response to fire severity and fire surrogate treatments in U.S. fire-prone forests

Creator:: Fontaine, Joseph B. and Kennedy, Patricia L.
Abstract:: Management in fire-prone ecosystems relies widely upon application of prescribed fire and/or fire surrogate (e.g., forest thinning) treatments to maintain biodiversity and ecosystem function. Recently, published literature examining wildlife response to fire and fire management has increased rapidly. However, none of this literature has been synthesized quantitatively, precluding assessment of...
Resource Type:: Article
Full Text:: -severity pre- JOSEPH B. FONTAINE AND PATRICIA L. KENNEDY1550 Ecological Applications Vol. 22, No. 5

Feeding Behavior, Prey Consumption, and Growth of Juvenile Red Hake

Creator:: Luczkovich, J. J. and Olla, B. L.
Abstract:: Juvenile red hake Urophycis chuss were collected while they were inhabiting sea scallops Placopecten magellanicus , and the effects of appetite and food availability on prey consumption and growth were examined under laboratory conditions. Fish took increasing amounts of live amphipods Gammarus annulatus with increasing periods of food deprivation up...
Resource Type:: Article
Full Text:: & B. L. Olla a a National Marine Fisheries Service, Northeast Fisheries Center, Sandy Hook Laboratory

ScholarsArchive@OSU

Daily and alternate day supplementation of urea or soybean meal to ruminants consuming low-quality cool-season forage: II. Effects on ruminal fermentation

Within-stem variation of respiration in Pseudotsuga menziesii (Douglas-fir) trees

Decomposition and nitrogen dynamics of ¹⁵N‑labeled leaf, root, and twig litter in temperate coniferous forests

The Rapid Morning Boundary-Layer Transition

Eddy–Mean Flow Interaction in Zonal Oceanic Jet Flow along Zonal Ridge Topography

Large-scale sea surface temperature variability from satellite and shipboard measurements

Implications of a long-lived basal magma ocean in generating Earth’s ancient magnetic field

Experimental evidence of fatty acid limited growth and survival in Pacific cod larvae

Meta-analysis of avian and small-mammal response to fire severity and fire surrogate treatments in U.S. fire-prone forests

Feeding Behavior, Prey Consumption, and Growth of Juvenile Red Hake

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