Forest and Rangeland Ecosystem Science Center (FRESC)

News

Filter Total Items: 113
Date published: September 28, 2018

Sagebrush Steppe Resilience and the Interaction of Climate and Management

Invasive grass species are a threat to many ecosystems around the world and in sagebrush habitats of the western United States, presence of non-native grasses may give rise to fire cycles that lead to a loss of sagebrush and a dominance of invasive cheatgrass.

Date published: September 14, 2018

Monitoring Coho Salmon in Oregon and Washington

USGS researchers are assessing habitat condition, watershed processes, and coho salmon populations in the context of land management and restoration activities.

Date published: September 14, 2018

Assessing Oregon Spotted Frog Predation by Non-native Species Using DNA Analyses

The Oregon spotted frog (OSF) is listed as federally threatened and predation by non-native species is thought to be one of the main conservation threats to this species.

Date published: September 14, 2018

Identifying Potential Contaminant Exposure to California Condors in the Pacific Northwest

Potential reintroduction of the endangered California Condor to parts of its historic range in the Pacific Northwest would benefit from information on possible threats that could challenge recovery efforts. Exposure to environmental contaminants is a key limiting factor for condor recovery in its southern range.

Date published: September 7, 2018

Science Summary to Inform Global Policy on Mercury Reductions

Mercury is a widespread pollutant that poses health risks to humans and wildlife at a global scale. Addressing these risks requires science-based integrated policy approaches.

Date published: August 24, 2018

Understanding the Ecological Importance of Biocrusts and Grazing Prescriptions that Minimize their Disturbance

Biocrusts develop on the surface of soils, comprised of a community of cyanobacteria, mosses, and lichens, and they are commonly found across natural areas in the arid and semi-arid Western U.S.

Date published: August 24, 2018

Establishing Bat Monitoring in the North Coast and Cascades Network of National Parks

Due to a recent detection in Washington state of white-nose syndrome, a deadly bat fungal disease, the National Park Service is interested in the status and distribution of bats within the North Coast and Cascades Network of parks.

Date published: August 17, 2018

Developing a Model to Estimate Golden Eagle Take at Wind-Power Facilities

Simple counts of carcasses found at wind farms do not reflect actual fatalities because some are removed by scavengers, or are overlooked by or fall within areas inaccessible to searchers. Because the density of carcasses generally declines with distance from the turbine, the location and configuration of inaccessible areas can greatly affect the proportion of carcasses that might be missed....

Date published: August 17, 2018

Pre-publication Communication of Research Results

Until publication in a peer-reviewed journal, communication of provisional scientific findings beyond participants in the study is typically limited. This practice helps ensure scientific integrity. However, a dilemma arises when a delay in communication of provisional findings has urgent societal repercussions, particularly for conservation, public health, or domestic animal health...

Date published: August 10, 2018

Using Historical Vegetation Monitoring Data to Infer Trends on Public Land

The BLM’s Soil-Vegetation Inventory Method (SVIM) program was implemented between 1977 and 1983 across 14 western states to provide data on vegetation communities and range conditions. USGS and BLM researchers partnered to revive and analyze historic vegetation cover data from the SVIM program to demonstrate its utility for understanding trends in vegetation through time by comparing...

Date published: August 10, 2018

Alpine Plant Community Composition, Phenology, and Physiology in Relation to Snow Melt Timing

Earlier snowmelt affects many ecosystems worldwide, especially in montane settings. USGS and other federal and university scientists determined how alpine plant species respond to snow melt gradients in a high-alpine area of the Rocky Mountains in Colorado.

Date published: August 10, 2018

Drivers of connectivity for two frog species from the U.S. Pacific Northwest

Landscape genetics illustrate how landscape features influence species connectivity and can provide insights for species conservation efforts;however, factors that influence connectivity vary considerably, even among species occupying similar landscapes.