Since the early 1990s, declines in northern spotted owl (Strix occidentalis caurina) populations have been documented through extensive field surveys and range-wide demographic analyses. Although loss of late-successional forest has been credited as the primary cause for spotted owl population declines, environmental variation has also been shown to influence vital...
Photoneutron contamination produced during high-energy, external beam radiotherapy can contribute to total patient dose. This aspect of unwanted dose is not currently evaluated for patients undergoing radiation therapy. While multiple studies have examined the neutron dose from beams with energies above 10 MeV, research assessing neutron dose from a 10...
Establishment of a non-native plant species in new habitats beyond their native range is associated with inherent changes in ecosystem properties. These changes may be dramatic or subdued, and consequences may be positive or negative depending on characteristics and response of the resident ecosystem. Non-native aquatic plant species in the...
Racehorses are elite athletes that undergo repetitive stresses from jogging, cantering, and galloping exercises, and there is significant evidence that the majority of racehorse musculoskeletal injuries are due to repetitive stress or overuse. Musculoskeletal injuries have negative consequences on the racing industry through the loss of use or death of...
The Mien are recent United States immigrants from Laos. They left
Southeast Asia at a time of great political upheaval. Because of their
close ties with United States governmental operations during the Southeast
Asian war, conditions for Mien in Laos made flight imperative as
Pathet Lao forces now control the...
This exploratory study examined whether temperament, home environment, and family stress impact the amount of prosocial behavior displayed by pre-school age low-income children and examined how much of an impact each factor has. Each factor was explored in depth along sub-scale dimensions including, (1) self-regulatory temperament, negative reactive temperament, and...
Natural populations of phytoplankton from Yaquina Bay, Oregon,
were incubated in large polyethelene bags in- situ, with and without
the natural assemblage of zooplankton. Samples were taken daily for
two weeks in April, 1974. The biomass of phytoplankton in the bag
without grazers reached values two to three times the...
The effects of climate change on coastal communities along the United States Atlantic coast are becoming an increasing threat. The effectiveness and sustainability of traditional built protections that have been used to armor coasts against these threats has come into question as they require costly replacement and maintenance and are...