Willamette Valley wetland prairies are some of the most endangered ecosystems in the United States, and provide habitat for many federally listed species (Wilson et al. 1993, Noss et al. 1995, USFWS 2000, Schultz et al. 2003). A rigorous program of ecosystem restoration can protect and enhance wetland plants, animals,...
Cancellation of the registration of an effective bean mold fungicide, Ronilan, is slated to occur at the end of growing season in 2005. Finding equivalent alternatives by 2006 for use in snap bean is critical. The goal of the project is to continue evaluations of alternative fungicides for their effectiveness...
Most climate models predict a weakening of the North Atlantic thermohaline circulation for the 21st century when forced by increasing levels of greenhouse gas concentrations. The model spread, however, is rather large, even when the forcing scenario is identical, indicating a large uncertainty in the response to forcing. In order...
The mission of the Greater La Pine Community Wildfire Protection Plan is to protect against loss of life, property and natural resources as the result of wildland fire. This CWPP outlines priorities, strategies and action plans for fuels reduction treatments in the wildland urban interface. It also addresses special areas...
The rip current field resulting from the transformation of surface gravity waves over
offshore submarine canyons is studied. Employing a wave transformation model and a
wave-induced circulation model over observed bathymetry we find that wave height
variations associated with undulations in the canyon contours cause rip current circulation
cells with...
Sequence data from nrITS and cpDNA have failed to fully resolve phylogenetic relationships among Pinus species. Four low‐copy nuclear genes, developed from the screening of 73 mapped conifer anchor loci, were sequenced from 12 species representing all subsections. Individual loci do not uniformly support either the nrITS or cpDNA hypotheses...
Section I contains an introduction to the subject of Scientific Evidence Review. Section II reviews Oregon state mandates to use “best available science” in policymaking and summarizes ODF efforts to address these mandates. Section III provides an overview of Systematic Evidence Reviews and how they are conducted in the fields...
Oregon Natural Heritage Information Center Report.
Sphagnum fens on the coast of Oregon are unique globally and contain a variety of rare plants and animals found nowhere else in the landscape. Evidence indicates that in the absence of disturbance, many open fens have converted to tall shrub and forest stands...
We evaluated whether bacteria with higher cell-specific nucleic acid content (HNA) or an active electron transport system, i.e., positive for reduction of 5-cyano-2,3-ditolyl tetrazolium chloride (CTC), were responsible for the bulk of bacterioplankton metabolic activity. We also examined whether the phylogenetic diversity of HNA and CTC-positive cells differed from the...
During boreal summer and fall, there is a strong southerly boundary layer flow across the equator into the east Pacific intertropical convergence zone (ITCZ). The modulation of this flow on synoptic to seasonal time scales is studied using an index of meridional pressure difference between the equator and the ITCZ...
This document provides information on the palatability of plants on Mongolian rangelands including native and introduced vascular plants by major seasonal periods: winter (January - March), spring (April- June), summer (July - September), and autumn (October - December). In addition to this, some species of valuable lichen species are also...
Describes chipmunks and their habits. Explains what type of habitat they need and how you can provide habitat in your yard. Includes sources of additional information and “fun facts.”
Skunks, opossum, raccoons, coyotes, deer, and elk often are lumped into the unofficial taxonomic family “nuisance wildlife.” Actually, any kind of wildlife can fit this description, from rattlesnakes to woodpeckers, and even beavers. Most often, however, problems caused by nuisance wildlife can be managed or avoided altogether.
Did you know that the American kestrel is the smallest falcon in
North America and the second smallest falcon in the world? The average
length of the American kestrel is 9 to 12 inches, about the size of a robin.
Published December 2005. A more recent revision exists. 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
Published December 2005. A more recent revision exists. 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
The ponderosa pine ecosystem of the West have changed dramatically since Euro-American settlement 140 years ago due to past land uses and the curtailment of natural fire. Today, ponderosa pine forests contain over abundance of fuel, and stand densities have increased from a grange of 49-124 trees per ha (20-50...
This prioritization is designed to provide strategic focus for tidal wetland conservation and restoration actions undertaken in partnership with willing landowners. The study highlights land areas in the Nehalem River estuary where tidal wetland restoration or conservation action may offer the biggest ecological “bang for the buck” – that is,...
This prioritization is designed to provide strategic focus for tidal wetland conservation and restoration actions undertaken in partnership with willing landowners. The stufy highligts land areas in the Umpqua River Estuary where tidal wetland restoration or conservation action may offer the biggest ecological "bang for the buck" - that is,...
The purpose of this briefing document is twofold: (1) to provide a general overview of key environmental issues at the global, regional, and local levels; and (2) to provide examples of long-term environmental goals that have been adopted by businesses, governments, and other organizations. This document is not meant to...
We analyze the performance of a planar lens based on realistic negative index material in a generalized geometry. We demonstrate that the conventional superlens design (where the lens is centered between the object and the image) is not optimal from the resolution point of view, develop an analytical expression for...
We employ two different methods to generate controllable elliptical polarization of teraherz (THz) pulses. First, THz pulses are generated via optical rectification in nonlinear crystals using a pair of temporally separated and perpendicularly polarized optical pulses. The THz ellipticity is controlled by adjusting the relative time delay and polarization of...
Our project goal is to promote the abundance of the endangered Fender’s blue butterfly (Icaricia icarioides fenderi) by recreating upland prairie habitat in former agricultural land at Finley National Wildlife Refuge, Corvallis, Oregon. To achieve this goal we initiated the following three studies. Study One: Experimental Investigation on the Effectiveness...
Form skipping has been used to help injured athletes progress to running.
Because little research has been done on form-skipping mechanics, its justifi cation
as a progression to running exercises is unclear. Objective: To compare groundreaction
forces (GRF) during form skipping and running in healthy subjects at
clinically relevant speeds,...
In this report we explore alternative ways of defining “rural” by mapping and comparing four different classification systems: three created for nationwide use, and one created specifically for Oregon. Several of the most frequently noted differences between the ‘two Oregons’ are the lower educational attainment, lower employment rate, lower average...
Nutrition project for 4-H. Reprinted November 2005. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
In 2003 the US Census Bureau found that 11.2% of the United States population was food insecure at some time during the year. The curious nature of such statistics only increases when we shift our gaze to the state of Oregon. This state enjoys a temperate climate and good farmland,...
Reprinted November 2005. Reviewed 07/07/14. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This article presents a semianalytic method to investigate the properties of energy transmission across bottom topography by barotropic Rossby waves. The method is first used to revisit the analytical estimates derived from wave-matching techniques and Wentzel–Kramers–Brillouin (WKB) approximations. The comparison between the semianalytic method and WKB indicates that the results...
One of the most important tools we have been using at the Malheur Agricultural Experiment Station over the past two decades is the granular matrix sensor (GMS, Watermark Soil Moisture Sensor, Irrometer Co., Riverside, CA), which measures soil moisture. It is only about 3 inches long and normally is buried...
Weeds reduce the value of nursery crops. They compete with crops for nutrients, light, and water. Some vine weeds climb nursery crops, requiring excessive labor for hand removal. Most serious are perennial weeds, which can be harvested with nursery crops and infest the field or landscape where they are subsequently...
This prioritization is designed to provide strategic focus for tidal wetland conservation and a restoration actions undertaken in partnership with willing landowners. The study highlights locations in the Siuslaw River estuary where tidal wetland restoration or conservation action may offer the biggest ecological "bang for the buck" - this is,...
In March of 2005, Jefferson County decided to complete a Community Wildfire Protection Plan. The CWPP for Jefferson County covers the entire county except for the area covered by the Greater Sisters Country CWPP in the southwest corner of Jefferson County. It also includes that portion of Crooked River Ranch...
The dependence of the reflectance at the surface on the vertical structure of optical parameters is derived from first principles. It is shown that the depth dependence is a function of the derivative of the round trip attenuation of the downwelling and backscattered light. Previously the depth dependence was usually...
The dielectric spectra of CaCu₃Ti₄O₁₂ is characterized by a large permittivity (εᵣ>10 000) with only a weak dependence on temperature over the temperature range 200–400 K. In this work, doping with 0.1–1.0 wt % ZrO₂ has been shown to dramatically reduce the dielectric loss. At 0.5 wt % ZrO₂, tan...
Meteorological conditions during an intensive oceanographic observational program
in May through August 2001 along the central Oregon coast are described and related to
larger-scale and longer-term conditions. Southward wind stresses of 0.05-0.1 N m⁻²
occurred roughly 75% of the time, with a sustained period of dominantly southward stress
from mid-June...
Three-dimensional ecosystem response to wind forcing on the continental shelf off Oregon is studied using a five-component nitrogen-based ecosystem model coupled to a high-resolution circulation model. We investigate, in particular, the influence of timedependent winds and alongshore variations in shelf topography for summer 2001 during the time period of the...
Time‐dependent, three‐dimensional, upwelling circulation on the continental shelf off the Oregon coast is studied using a primitive equation numerical model. A limited area domain with a high‐resolution curvilinear grid is utilized. The response of the coastal ocean to forcing by observed wind stress and heat flux during the summer 2001...
We construct an extratropical reduced temperature–depth profile for land areas north
of 20°N latitude from the global borehole temperature database compiled for climate
reconstruction. The mean reduced temperature profile compares well with a time series
constructed from an initial baseline temperature (0.6° ± 0.1°C) and the last 140 years
of...