Forest and Rangeland Ecosystem Science Center (FRESC)

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Filter Total Items: 122
Date published: November 2, 2018

Vegetative Community Response to Landscape Scale Post-fire Herbicide (Imazapic) Application

The timing of herbicide application following wildfire can strongly influence its effectiveness. USGS researchers evaluated the effect of the commonly used herbicide imazapic on targeted exotic annual grasses and non-target plants, applied the first winter or second fall after the 2015 Soda wildfire. 

Date published: October 26, 2018

Protocol for Describing Indicators of Rangeland Health

Assessing rangeland health is useful from a land management perspective in providing a baseline or early indicator of degradation and for prioritizing habitat across a landscape for restoration.

Date published: October 26, 2018

A Unified Research Strategy for Disease Management

As wildlife diseases increase globally, an understanding of host-pathogen relationships can elucidate avenues for management and improve conservation efficacy. Amphibians are among the most threatened groups of wildlife, and disease is a major factor in global amphibian declines.

Date published: October 26, 2018

Effects of Nitrogen and Sulfur Deposition on Tree Growth, Survival, and Carbon Sequestration Across the U.S.

There is scientific controversy about whether nitrogen deposition increases forest carbon sequestration. All tree species do not exhibit the same response to nitrogen and responses may be complicated by interactions with biotic and other abiotic factors such as sulfur deposition. 

Date published: October 5, 2018

Autumn Movements of Oregon Spotted Frog and Winter Habitat Use in the Cascade Mountains of Oregon

The Oregon spotted frog is endemic to the Pacific Northwest where loss and alteration of wetland habitats have contributed to declines in the species. Like many amphibians, the Oregon spotted frog uses multiple habitats across seasons.

Date published: October 5, 2018

A Database Tool for Estimating Fuel Loadings Across a Range of Intact to Degraded Sagebrush Habitats in Southern Idaho

USGS researchers created an interactive Fuels Guide and Database, providing vegetation and fuel loading information and photographs for big sagebrush (Artemisia tridentata) ecological sites in the Morley Nelson Snake River Birds of Prey National Conservation Area (NCA) in southern Idaho.

Date published: September 28, 2018

Large-scale Review of Amphibian Species and Community Response to Climate Change

Amphibian species and community richness has been declining in North America and climate change may play a role in these declines. Global climate change has led to a range shift of many wildlife species and thus understanding how these changes in species distribution can be used to predict amphibian community responses that may improve conservation efforts.

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.