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Highlight IDTitleStrategic Program Area(s)YearStation
Photo of Computer screen capture from the frog model as applied to a 400-meter (about .25 mile) reach of the South Fork, Trinity River, northwestern California. USDA Forest Service
ID: 802
Balancing Potentially Conflicting Demands: Fish and Frogs in Regulated Rivers

Regulated rivers in California and beyond provide critical habitat for multiple threatened species, including various salmonid fishes and foothi ...

Principal Investigator : Bret C. Harvey

Wildlife and Fish2015PSW
Photo of On the leaf is a normal tree compared to a tree with a chromosomal break that leads to altered wood development and growth habit. On the right is a diagram showing the precise location of the chromosome break. The genes responsible for the wood and growth habit changes reside in this region, and can now be studied in detail. Andrew Groover, USDA Forest Service
ID: 689
Breakthroughs in Poplar Genomics Improve Bioenergy Feedstock Options

Developing fast growing poplar cultivars for biofuels production is a major step towards renewable, tree-based energy. Optimal properties of sho ...

Principal Investigator : Andrew T. Groover

Resource Management and Use2014PSW
Photo of
ID: 345
California golden trout and future climate warming

The California golden trout is imperiled due to exotic trout, genetic introgression, and degraded habitat, and faces further stress from climate ...

Principal Investigator : Kathleen R. Matthews

Wildlife and Fish2011PSW
Photo of Swabbing a Cascades frog to test disease status. USDA Forest Service
ID: 813
Disease Risk for Mountain Amphibians of California

Chytridiomycosis, an infectious disease caused by a fungus, has emerged as a catastrophic global pandemic in amphibians within the past several ...

Principal Investigator : Karen L. Pope

Wildlife and Fish2015PSW
Photo of
ID: 98
Do Insects Visit and Pollinate Tanoak Flowers

The knowledge is key for informed conservation of the species

Principal Investigator : Jessica W. Wright

Invasive Species
Inventory and Monitoring
2012PSW
Photo of Foothill yellow-legged frogs can be found in habitats located in the North Fork of the American River. Amy Lind, Forest Service
ID: 357
Dynamic flow modeling of riverine amphibian habitat with application to regulated flow management

A seasonal pulsed flows, such as those from hydropower plants, have potentially negative effects on the early life stages of amphibians, such as ...

Principal Investigator : Amy J. Lind

Wildlife and Fish2011PSW
Photo of Hoary bats (Lasiurus cinereus) are the most frequent fatalities at wind energy facilites. Forest Service
ID: 105
Echolocation Monitoring Models Bat Occupancy Near Wind Energy Facilities

Model could mitigate the effects of wind energy development on populations of migratory bats

Principal Investigator : Ted Weller

Wildlife and Fish
Resource Management and Use
Inventory and Monitoring
2012PSW
Photo of These images depict the habitat restoration site and demonstrate the assignment of habitat characteristics to individual habitat cells.
ID: 1345
Evaluating habitat restoration plans with a novel fish population model

The ability to forecast the consequences of alternative habitat restoration plans for highly valued resources is a critical need of the Forest S ...

Principal Investigator : Bret C. Harvey

Water, Air, and Soil
Wildlife and Fish
2017PSW
Photo of
ID: 356
Evaluating Management Risks Using Landscape Trajectory Analysis

Ecosystem management requires an understanding of how landscapes vary in space and time and how this variation can be affected by management dec ...

Principal Investigator : Craig M. Thompson

Wildlife and Fish2011PSW
Photo of Female Ensatina salamander being weighed to access condition. Garth Hodgson, USDA Forest Service
ID: 683
Friends in Low Places: How Salamanders Help Mitigate the Impacts of Climate Change

Woodland salamanders perform a vital ecological service in American forests by slowing the release of carbon in the form of leaf litter on the f ...

Principal Investigator : Hart Welsh

Wildlife and Fish
Water, Air, and Soil
2014PSW
Photo of Image shows how full genome sequencing from an individual tree was used to determine position of chromosomal dosage variation. Andrew Groover, U.S. Department of Agriculture Forest Service.
ID: 1115
Gene-sequenced Poplars Potential Research Boon for Bioenergy

A large population of poplar trees with altered gene dosage has been developed for bioenergy feedstock research. Each of the trees has been subj ...

Principal Investigator : Andrew T. Groover

Resource Management and Use2016PSW
Photo of
ID: 233
Historic Critchfield Memorial Herbarium Goes Digital: Believed to Be the Largest Collection of Pine Specimens in the World

The USDA Forest Service's Pacific SouthwestResearch Station, Institute of Forest Genetics, Placerville, CA, has released the online version of i ...

Principal Investigator : Jessica W. Wright

Resource Management and Use
Inventory and Monitoring
2010PSW
Photo of European Starlings are one of the world’s most successful invasive species. Known to compete with native bird species for nest sites, they may also compete with ground-foraging insectivores and other grassland species.
ID: 796
Impacts of European Starlings on Native Species: Looking Beyond Competition for Nest Sites

European starlings are a remarkably successful invasive species known to compete with native bird species for nest cavities. Starlings avoid ung ...

Principal Investigator : Kathryn L. Purcell

Invasive Species2015PSW
Photo of Northern flying squirrel. iStock.
ID: 1070
Landscape Variability Compensates for Fuel Reduction Treatments

While tree thinning had a negative effect on northern flying squirrel density within a thinning treatment unit, research results suggested that ...

Principal Investigator : Angela M. White

Wildlife and Fish2016PSW
Photo of A bat with an attached GPS tag. Ted Weller, USDA Forest Service
ID: 815
Long-term Attachment of Miniature Data-loggers Reveal Novel Aspects of Bat Ecology

Migratory routes used by bats and their behavior during migration have long been difficult to ascertain. Data logging tags were attached to hoar ...

Principal Investigator : Ted Weller

Inventory and Monitoring2015PSW
Photo of Hells Canyon Dam. Forest Service researchers and their colleagues have developed spatially explicit, individual-based models of salmonid fishes to address how dams affect them. NOAA.
ID: 944
Modeling Potential River Management Conflicts Between Frogs and Salmonids

The Forest Service participates in the management of many regulated rivers that, while providing clean water to people, also support populations ...

Principal Investigator : Bret C. Harvey

Water, Air, and Soil
Wildlife and Fish
2016PSW
Photo of
ID: 114
Monitoring Network Saves Wealth of Data on American Bird Populations

Network archives data sets to address future large-scale conservation issues

Principal Investigator : C. John Ralph

Resource Management and Use
Wildlife and Fish
Inventory and Monitoring
2012PSW
Photo of Juvenile foothill yellow-legged frog. Ryan Peek, Forest Service
ID: 363
Rangewide phylogeography of the western U.S. endemic frog Rana boylii (Ranidae): Implications for the conservation of frogs and rivers

Genetic data are increasingly being used in conservation planning for declining species. Both the ecological and distributional limits of the fo ...

Principal Investigator : Amy J. Lind

Wildlife and Fish2011PSW
Photo of Normally tree stems make a single layer of wood (blue cells, bottom of left panel). Changing expression of a single regulatory gene results in the formation of a second wood forming layer (right panel). Dr. Juan Du, Forest Service
ID: 365
Regulation of bark and wood growth in trees

The dividing cells of the cambium meristem provide cells that differentiate in either wood or bark. Although fundamental to how trees grow, regu ...

Principal Investigator : Andrew T. Groover

Resource Management and Use2011PSW
Photo of A western pond turtle at the San Joaquin Experimental Range in California. USDA Forest Service
ID: 794
Response of Western Pond Turtles to Drought

Western pond turtles (Actinemys marmorata) are declining throughout most of their range. The population studied at the San Joaquin Experimental ...

Principal Investigator : Kathryn L. Purcell

Invasive Species
Wildlife and Fish
2015PSW
Photo of
ID: 367
Sequencing the transcriptome of tanoak seedlings infected with Phytophthora ramorum

We have sequenced and assembled the transcriptome of Notholithocarpus densiflorus (tanoak) as well as the pathogen that causes Sudden Oak Death ...

Principal Investigator : Jessica W. Wright

Invasive Species2011PSW
Photo of The career and gender distribution of ecology authors used in the analysis, Angela White, USDA Forest Service
ID: 1022
Solving the Productivity and Impact Puzzle: Do Men Outperform Women? Or are Metrics Biased?

The disproportionate attrition of women from science suggests current retention strategies are unsuccessful. But are female scientists’ career ...

Principal Investigator : Angela M. White

Wildlife and Fish2016PSW
Photo of Following a sharp decline in abundance related to West Nile Virus, western scrub-jays in California are showing recovery. Gary Woods.
ID: 1117
Songbird Population Trends Have Their Ups and Downs

Population trends and information on whether species are increasing or decreasing are crucial to managing and conserving species. Using 27 years ...

Principal Investigator : Kathryn L. Purcell

Wildlife and Fish2016PSW
Photo of
ID: 99
Trout Populations Benefit From Novel Model That Examines Fragmented Habitat

Research helps set priorities for restoring connectivity of stream networks

Principal Investigator : Bret C. Harvey

Wildlife and Fish2012PSW
Photo of Foothill yellow-tailed tadpoles. Sarah Kupferberg, U.C. Berkeley
ID: 379
Water velocity tolerance in tadpoles of the foothill yellow-legged frog (Rana boylii):

The effects of large magnitude flow fluctuations in rivers with dams, commonly referred to as pulsed flows, on tadpoles of Foothill Yellow-legge ...

Principal Investigator : Amy J. Lind

Wildlife and Fish2011PSW
Photo of Image is a micrograph of tension wood, labelling the specialized cell wall responsible for force generation in red. This cell wall is composed almost entirely of cellulose, which is the starting material for bioenergy production. Andrew Groover, U.S. Department of Agriculture Forest Service.
ID: 1116
Wood Biology Breakthrough

Forest Service scientists determined how trees alter wood development to reorient stems in response to mechanical stress and gravity.

Principal Investigator : Andrew T. Groover

Resource Management and Use2016PSW
Photo of Woodland salamander. Garth Hodgson, USDA Forest Service
ID: 541
Woodland Salamanders are Indicators of Redwood Forest Recovery

Forest Service researchers have found that two common salamander species provide a way of measuring the recovery of previously harvested redwood ...

Principal Investigator : Hart Welsh

Wildlife and Fish2013PSW