Forest and Rangeland Ecosystem Science Center (FRESC)

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Filter Total Items: 113
Date published: March 9, 2018

Modeling Potential Beaver Habitat for Restoring Riparian Ecosystems

Beaver have the potential to restore riparian ecosystems and offset potential effects of climate change by modulating streamflow through dam-building and subsequent water storage.

Date published: March 2, 2018

Greater Sage-Grouse Science (2015-2017): Synthesis and Potential Management Implications

At the request of the BLM, the USGS worked with federal and state agency partners to develop a report that synthesizes the scientific literature published since records of decision were completed for 2015 BLM/USDA Forest Service land use plan amendments for greater sage-grouse, and provides potential management implications of the science.

Date published: March 2, 2018

Estimating Aquatic Species Density From Environmental DNA

Environmental DNA – or eDNA - analytical methods are effective for estimating site occupancy and species distribution of aquatic organisms.

Date published: March 2, 2018

A Simplified Field Protocol for Genetic Sampling of Birds Using Buccal Swabs

Population genetic studies are driven by DNA sampling, and blood sampling has historically been the preferred method for obtaining DNA.

Date published: February 23, 2018

Annotated Bibliography: Research on Greater Sage-grouse since January 2015

The sheer number of scientific publications related to greater sage-grouse research can be a challenge for managers to navigate when updating plans for managing greater sage-grouse and sagebrush ecosystems. To assist in this process, the USGS reviewed and summarized scientific literature published since January 1, 2015.

Date published: February 23, 2018

Improving Estimation of Flight Altitude: A Commentary

Altitude measurements from wildlife tracking devices, combined with elevation data, commonly are used to estimate the flight altitude of birds. However, these data include measurement error and understanding that error may improve estimation of flight altitude and benefit applied ecology.

Date published: February 16, 2018

Modulators of Mercury Risk to Wildlife and Humans in the Context of Rapid Global Change

USGS author Collin Eagles-Smith led an invited synthesis paper as part of the plenary effort for the 13th International Conference on Mercury as a Global Contaminant.

Date published: February 16, 2018

Stream Mercury Export in Response to Contemporary Timber Harvesting Methods

Timber harvest is a significant driver of mercury releases in some parts of the world. Yet, the impact of forest harvest on mercury mobilization has not been directly studied in the Pacific Northwest despite being an important timber producing region that also receives high atmospheric mercury deposition.

Date published: February 12, 2018

Modulators of Mercury Risk to Wildlife and Humans in the Context of Rapid Global Change

USGS author Collin Eagles-Smith led an invited synthesis paper as part of the plenary effort for the 13th International Conference on Mercury as a Global Contaminant.

Date published: February 12, 2018

Stream Mercury Export in Response to Contemporary Timber Harvesting Methods

Timber harvest is a significant driver of mercury releases in some parts of the world.

Date published: February 9, 2018

Survival and Movement of Stream Amphibians in Response to Timber Harvest

USGS scientists Nathan Chelgren and Michael Adams analyzed demographic rates – such as survival, movement, and growth – of aquatic life stages of coastal tailed frogs and coastal giant salamanders in a before-after timber harvest study in the Coast Range of western Oregon.

Date published: February 5, 2018

Survival and Movement of Stream Amphibians in Response to Timber Harvest

The effects of timber harvest on headwater stream amphibians have been studied extensively, but with conflicting or ambiguous results.