Soil infiltration and wettability measurements during the first year following a broadcast burn in the Siskiyou Mountains of
southwest Oregon, have illustrated the magnitude of the effects of light-to-moderate intensity burning on hydrological soil
properties. A prescribed fire near White Creek in late spring significantly reduced soil infiltration for 4...
As remote sensing data continues to proliferate, development and assessment of methods that generate predictions of forest attributes is needed to inform operational use. For several decades, lidar data collected from aerial platforms has informed assessments of forest resources, but many opportunities remain for the technology. We examine and develop...
Management of deer populations is directed toward multiple
objectives. Deer populations on public and private lands belong to the
public and thus management is a political process. Four components
for an effective management system for deer populations are identified.
These are the set of objectives relating to the resource, the...
The global positioning system (GPS) has come into widespread use for many forestry applications. However, there is still some uncertainty as to how receivers perform in dense forest, where trees interfere with the GPS signal and increase error. These two manuscripts examine GPS accuracy and overall effectiveness within second growth...
This report is divided into several sections. The first provides information
on the current status of wetlands, the Corps' regulatory role, its statutory
enforcement authority, and its interpretation of that authority. The next
section describes the Portland District's enforcement structure and procedures.
A case study detailing the District's treatment of...
Effects of inbreeding coho salmon (Oncorhynchus kisutch) on
survival during early life history, growth, feed efficiency, and
resistance to gas bubble disease were studied. No effect of inbreeding
could be associated with either F=0.25 or F=0.125. Tetraploidy
may help explain the absence of inbreeding depression at these
levels.
The purpose of this study was to determine what effect, if any, subtitles would have on listeners’
perceptions of expressivity in an operatic performance. Specifically, this study addressed the
following research questions: (1) Will there be differences in perceived expressivity among three
listening conditions (audio only, audio + video, audio...
The behavior of all of the observed molecular band
emission as well as the prominent atomic line emission
from a pulsed microwave helium plasma is given. Extensive
efforts to purify the helium include the use of a
uranium getter, a quartz diffusion tube, and a cataphoretic
discharge. The plasma is...
