Oregon's estuaries are important ecosystems for scientific study. Consequently, knowledge of what research has been conducted helps us identify benchmarks and plan new projects. A comprehensive bibliography of published research, technical reports, local documents, and data sets is one means of recording this knowledge. For these reasons, the Guin Library...
Fires affect animals mainly through effects on their habitat. Fires often cause short-term increases in wildlife foods that contribute to increases in populations of some animals. These increases are moderated by the animals’ ability to thrive in the altered, often simplified, structure of the postfire environment. The extent of fire...
Wild life in Oregon : being a stirring recital of actual scenes of daring and peril among the gigantic forests and terrific rapids of the Columbia River (the Mississippi of the Pacific slope). And giving life-like pictures of terrific encounters with savages ... Including a full, fair and reliable history...
This document partially addresses the Wetlands component of San Juan County’s Critical Areas Ordinance (CAO). Drawing from a foundation in best available science, it describes important functions performed by the County's wetlands, effects of various activities on those functions, and strategies for protecting wetland functions from impacting activities, with an...
Report by Portland State University's Oregon Biodiversity Information Center (ORBIC), part of the Oregon University System's Institute for Natural Resources.
The Normalized Burn Ratio and Composite Burn Index were used to classify burn severity in three sites that experienced lightning-ignited wildfire in the year 2000. The effect of burn severity (unburned, low, moderate, and high severity classes) was investigated on vegetation and soil microbial community composition. Vegetation communities showed a...
The Eastern black rail (laterallus jamaicanesis) is the smallest of the rail species and facing catastrophic decline throughout its home range. According to the U.S. Fish and Wildlife Service, the black rail population has decreased as much as 90%, leading to its proposed Federal listing as threatened under the Endangered...
Lead is a ubiquitous environmental toxin known to cause neurological deficits in children. There is no biological need for lead and no safe level of lead in the body has ever been identified. Despite dramatic decline in mean blood lead levels nationwide since the U.S. EPA’s ban on lead-based paint...
This report provides a strategic approach developed by a Western Association of Fish and Wildlife Agencies interagency working group for conservation of sagebrush ecosystems, Greater sage-grouse, and Gunnison sage-grouse. It uses information on (1) factors that influence sagebrush ecosystem resilience to disturbance and resistance to nonnative invasive annual grasses and...
Lidar is currently the most accurate method for remote estimation of forest structure, but it has limited spatial and temporal coverage. Conversely, Landsat data are more widely available, but exhibit a weaker relationship with structure under medium to high leaf area conditions. One potentially valuable means of enhancing the relationship...