Forest and Rangeland Ecosystem Science Center (FRESC)


Filter Total Items: 150
woman leaning on soil auger
December 31, 2016

Collecting soil cores for a SageSTEP carbon budget study

This auger is used to collect 1 meter deep soil cores for a carbon budget study associated with the SageSTEP project. SageSTEP is a long-term, multi-disciplinary experiment evaluating sagebrush restoration methods in the Great Basin. SageSTEP team members include scientists from the USGS, USFS, USDA-ARS, Oregon State, Utah State, Brigham Young, and the Univeristies of

two scientists setting up an experiment in an area dominated by cheatgrass
September 23, 2016

Setting up a bacterial control experiment on cheatgrass

Scientists are studying several weed suppressive bacteria to see if they can be used as a biological control on invasive exotic grasses, such as cheatgrass.

Wind turbines at the Altamont Pass Wind Farm
September 8, 2016

Wind turbines at the Altamont Pass Wind Farm

The Altamont Pass Wind Far is located in northern California.

August 23, 2016

Golden Eagle Flight

Golden eagles can be killed by colliding with a number of human-made objects, including wind turbines. USGS research wildlife biologist Todd Katzner describes his studies of golden eagle flight. This research is being done to model flight behavior which might help managers understand how placement of wind turbines might pose significant risks to golden eagles.


three scientists preparing to conduct an underwater biological survey
August 2, 2016

Preparing for underwater biological surveys of the Bogachiel River

Three USGS scientists prepare to conduct underwater biological surveys of the Bogachiel River, Washington

Sampling for Bsal
August 1, 2016

Sampling for Bsal

Scientists sample a rough-skinned newt for the fungal pathogen Batrachochytrium salamandrivorans, or Bsal, at a pond near Portland, Oregon. Bsal is decimating wild salamander populations in Europe and could emerge in the U.S. through the captive amphibian trade.

Bumble bee on Scarlet Globemallow
July 3, 2016

Bumble bee on Scarlet Globemallow

To investigate whether insects could be used as bioindicators of climate change, USGS researchers studied insect community composition along an elevation gradient in semi-arid shrublands of eastern Oregon. Overall, their analyses showed that insect communities respond to weather and local vegetation more than to long-term climate, suggesting that interannual variation in

NPS/USGS remote den camera. Fisher family denning in a mountain beaver burrow.
May 6, 2016

NPS/USGS remote den camera. Fisher family denning in a mountain beaver burrow.

NPS/USGS remote den camera. Fisher family denning in a mountain beaver burrow. Look carefully! Two fisher kits in front of their den site in a mountain beaver burrow (foreground) with mom (background left) watching on. The kits are about 4-5 months old.

pen tip next to lichen
April 27, 2016

Close-up of biocrust - lichen

Biological soil crusts, or biocrusts, are lichens, mosses, and cyanobacteria that grow on the soil surface and are common in the spaces between native plants in arid and semi-arid systems. Biocrusts reduce soil erosion, contribute to nutrient and water cycling, and reduce evaporation and invasion by exotic plants. The green-red plants with flower bud stalks are likely

selfie of USGS scientists
April 27, 2016

FRESC 2016 SageSTEP field crew selfie

The 2016 SageSTEP field crew.  They are collecting vegetation monitoring data at SageSTEP's (Sagebrush Steppe Treatment Evaluation Project) Moses Coulee site.  SageSTEP is a regional experiment evaluating methods of sagebrush steppe restoration in the Great Basin. Sagebrush communities have been identified as one of the most threatened land types in North America, and as

Image: Measuring a Frog in the Cascades
March 15, 2016

Measuring a Frog in the Cascades

USGS researchers Brome McCreary (orange vest) and Chris Pearl take measurements on Cascades frog at a mountain lake in Oregon.

February 8, 2016

Evidence of Absence

This is a recorded presentation describing a statistical software package called "Evidence of Absence" that can be used to provide evidence of compliance with incidental take permits. It will be useful to wildlife managers and wind energy operators to estimate, with reasonable certainty, that a certain number of birds or bats have been killed at wind energy facilities,