In recent years, several interrelated forces—prolonged drought, growing populations, height-ened environmental protections, sustained agricultural use, and hydrologic alterations due to climate change—have increased pressure on water users in the Western United States, where the agricultural sector accounts for up to 90% of total water withdrawals. Technology im-provements developed since the...
Spatially explicit maps of habitat relationships have proven to be valuable tools for conservation and management applications including evaluating how and which species may be impacted by large scale climate change, ongoing fragmentation of habitat, and local land-use practices. Studies have turned to remote sensing datasets as a way to...
Preliminary studies were run to determine the sensitivity and
reliability of enzyme-linked immunosorbent assay (ELISA) for the
detection of potato virus X (PVX). ELISA was found to be capable of
detecting PVX in tobacco at a 1:3333 sample dilution. The reliability
of ELISA for the detection of PVX in potato...
The lentil strain of pea seedborne mosaic virus, PSbMV-L, was
distinguished from the standard isolates of PSbMV by a natural inoculum
reservoir in lentil seed and by separate resistance genes in Pisum
and Lens. PSbMV-L was intermediate in symptom severity between the
standard and New Zealand isolates of PSbMV.
Seed...
Few parenting curricula exist that are culturally-appropriate to the Mexican-immigrant population served by many programs. The Even Start family literacy program has four integrated components, making it more difficult to find appropriate curricula for the families they serve. During Winter 2006, discussion groups were conducted with participants in two Even...
For over 100 years, National Parks have existed to preserve America’s natural and cultural heritage for current and future generations. As environmental pressures on wildlife and habitats have increased in recent decades, National Park lands have become important protected areas for many threatened and endangered species. Conservation and management of...
A sequence of three internal solitary waves of
elevation were observed propagating shoreward along a
near-bottom density interface over Oregon’s continental
shelf. These waves are highly turbulent and coincide with
enhanced optical backscatter, consistent with increased
suspended sediments in the bottom boundary layer. Nonlinear
solitary wave solutions are employed to...
Isopycnal slope spectra were computed from thermistor data obtained using a microstructure platform
towed through turbulence generated by internal tidal motions near the Hawaiian Ridge. The spectra were
compared with turbulence dissipation rates ε that are estimated using shear probes. The turbulence subrange
of isopycnal slope spectra extends to surprisingly...
Horizontal tow measurements of internal waves are rare and have been largely supplanted in recent
decades by vertical profile measurements. Here, estimates of isotherm displacements and turbulence dissipation
rate from a towed vehicle deployed near Hawaii are presented. The displacement data are interpreted
in terms of horizontal wavenumber spectra of...
In western conifer-dominated forests where the abundance of old-growth stands is decreasing, species
such as the Brown Creeper (Certhia americana) may be useful as indicator species for monitoring the health
of old-growth systems because they are strongly associated with habitat characteristics associated with old growth
and are especially sensitive to...