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Filter Total Items: 151
Thomas Creek in Ruby Mountains.
Date Published: April 11, 2016

Design, Analysis, Monitoring, and Conservation of Ecological Dynamics at Broad Scales

There is increasing recognition that the spatial context in which any ecological process or phenomenon occurs has great bearing on the outcome of that process.  Since 1994, we have been working on numerous field investigations and conceptual developments to inform how ecological resources can be managed and conserved across jurisdictional boundaries and broad spatial extents.  Because such...

Cattle grazing in the mountain sunset.
Date Published: April 11, 2016

Grazing, Ungulate, and Disturbance Ecology

We work with a diverse collection of other researchers and resource managers, at local to national and international levels, to address ways in which herbivory and grazing systems interact with the broader ecosystems in which they occur.  We investigate whether long-term weather patterns may interact synergistically to affect how soils, vegetation, and other animals respond to grazing or...

American pika eating plants.
Date Published: April 11, 2016
Status: Active

Species and Ecosystem Responses to Global Change

We work with a diverse collection of researchers, resource managers, and conservation practitioners to address the “how” and “why” questions that underlie species-and ecosystem-level responses to long-term weather patterns.  Although it is more challenging, this level of more-mechanistic understanding is critical for informing climate-adaptation actions and strategies.  We use a diversity of...

Bighorn sheep in Glacier NP.
Date Published: April 10, 2016

Bighorn Sheep in and near Glacier National Park

USGS collected GPS data as well as genetic and other samples on over 100 bighorn sheep east of the Continental Divide in Glacier National Park, Waterton National Park, and the Blackfeet Reservation. Bighorn sheep across the west are vulnerable to disease such as pneumonia. We are therefore working to improve our understanding of bighorn sheep movements, approaches for monitoring bighorns, and...

Contacts: Tabitha Graves
Wide eyed elk in a feedgrounds.
Date Published: April 9, 2016
Status: Active

Ecology of Elk on Department of Interior Lands in Southwest Wyoming

Between 2005 and 2010, we radio- collared 61 female elk (Cervus elaphus) on Fossil Butte National Monument and 12 female elk near Cokeville, Wyoming, slightly northwest of the Monument, all from the West Green River herd. We are using the 209,250 locations from these elk to identify seasonal distribution patterns, evaluate habitat use, and assess factors influencing the timing of migration.  ...

Getting the shot of Blackfoot Glacier, GNP.
Date Published: April 6, 2016
Status: Active

Repeat Photography Project

Climate change research in Glacier National Park, Montana entails many methods of documenting the landscape change, including the decline of the parks namesake glaciers. While less quantitative than other high-tech methods of recording glacial mass, depth, and rate of retreat, repeat photography has become a valuable tool for communicating effects of global warming. With evidence of worldwide...

Contacts: Lisa McKeon
It requires heavy machinery to remove snow and debris along the road. In this image, crews are removing 20+ feet of snow from th
Date Published: April 6, 2016

Going-to-the-Sun Road Avalanche Forecasting Program

The Going-to-the-Sun Road (GTTSR) is one of the premier attractions in Glacier National Park (GNP), Montana. It opened in 1933 after 12 years of construction and is one of GNP’s most heavily used facilities. The two-lane, 80-kilometer road traverses the park from west to east, crossing the Continental Divide at Logan Pass at 2026m elevation. The Park closes a 56km section of the road each...

A USGS scientist skis in to Dead Horse Point on Going-to-the-Sun Road in Glacier NP.
Date Published: April 6, 2016

Natural Hazards of Spring Opening of Going to the Sun Road

The Going-to-the-Sun (GTTS) Road in Glacier National Park, Montana is one of the park's premier attractions and the most heavily used facility. The road traverses Glacier, from the west entrance in West Glacier to the east entrance in St. Mary. The narrow, 52-mile road crosses the Continental Divide at Logan Pass, at an elevation of 6880 feet. The Logan Pass section of the GTTS Road is...

Image: Shepard Glacier, Glacier National Park, Montana - 1913
Date Published: April 6, 2016

History of Glaciers in Glacier National Park

The history of glaciation within current Glacier National Park boundaries spans centuries of glacial growth and recession, carving the features we see today. Glaciers were present within current Glacier National Park boundaries as early as 7,000 years ago but may have survived an early Holocene warm period (Carrara, 1989), making them much older. These modest glaciers varied in size, tracking...

Image: Shepard Glacier, Glacier National Park, Montana - 2005
Date Published: April 6, 2016
Status: Active

Retreat of Glaciers in Glacier National Park

Worldwide glacier recession is well documented (1,2) and varied model projections suggest that certain studied GNP glaciers will disappear in the next few decades, between 2030 (3) to 2080 (4).  USGS scientists in Glacier National Park are collaborating with glaciologist from Alaska and Washington and using emerging technologies to understand glacier-climate interactions to advance the...

Setting up a weather station in Glacier National Park
Date Published: April 6, 2016

Alpine Climatology of Glacier National Park

Glacier National Park is a topographically diverse region, making localized effects of elevation, aspect, and cold air drainage several of many important factors that necessitate a diversity of long-term climate monitoring sites. Additionally, many studies have shown more rapid warming at higher elevations across the Intermountain West, but with relatively few high-elevation stations available...

Image: Getting the Shot, Grinnell Glacier, Glacier National Park.
Date Published: April 6, 2016
Status: Active

Landscape Change Photography

Repeat photography is being used by the CCME program to document landscape change. Glaciers have been the primary focus of this park-wide survey and this collection of repeat photographs, available for download on the CCME website, have been used to illustrate the effects of climate change in venues across the globe. These powerful images, with their inherent ease of interpretation, have...

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Year Published: 2017

FEQinput—An editor for the full equations (FEQ) hydraulic modeling system

IntroductionThe Full Equations Model (FEQ) is a computer program that solves the full, dynamic equations of motion for one-dimensional unsteady hydraulic flow in open channels and through control structures. As a result, hydrologists have used FEQ to design and operate flood-control structures, delineate inundation maps, and analyze peak-flow...

Ancalle, David S.; Ancalle, Pablo J.; Domanski, Marian M.
Ancalle, D.S., Ancalle, P.J., and Domanski, M.M., 2017, FEQinput—An editor for the full equations (FEQ) hydraulic modeling system: U.S. Geological Survey Fact Sheet 2017–3072, 4 p., https://doi.org/10.3133/fs20173072.

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Year Published: 2017

Hydrogeology and water quality of sand and gravel aquifers in McHenry County, Illinois, 2009-14, and comparison to conditions in 1979

Baseline conditions for the sand and gravel aquifers (groundwater) in McHenry County, Illinois, were assessed using data from a countywide network of 44 monitoring wells collecting continuous water-level data from 2009–14. In 2010, water-quality data were collected from 41 of the monitoring wells, along with five additional monitoring wells...

Gahala, Amy M.
Gahala, A.M., 2017, Hydrogeology and water quality of sand and gravel aquifers in McHenry County, Illinois, 2009-14, and comparison to conditions in 1979: U.S. Geological Survey Scientific Investigations Report 2017-5112, 91 p., https://doi.org/10.3133/sir20175112.

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Year Published: 2017

Climate change and alpine stream biology: progress, challenges, and opportunities for the future

In alpine regions worldwide, climate change is dramatically altering ecosystems and affecting biodiversity in many ways. For streams, receding alpine glaciers and snowfields, paired with altered precipitation regimes, are driving shifts in hydrology, species distributions, basal resources, and threatening the very existence of some habitats and...

Hotaling, Scott; Finn, Debra S.; Giersch, J. Joseph; Weisrock, David W.; Jacobsen, Dean
Hotaling, Scott & Finn, Deb & Giersch, Joe & Weisrock, David & Jacobsen, Dean. (2017). Climate change and alpine stream biology: progress, challenges, and opportunities for the future. Biological reviews of the Cambridge Philosophical Society. 92. . 10.1111/brv.12319

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Year Published: 2017

Guest editorial: Aquatic science in the Northwest

In recent years, Northwest Science has seen a significant increase in the number of submissions representing aquatic science. Our region is punctuated by aquatic systems. The current issue in particular, presents a number of new aquatic science contributions. Accordingly, Northwest Science invited the authors of this guest editorial to...

Sepulveda, Adam J.; Ray, Andrew M.
Adam J. Sepulveda and Andrew M. Ray. 2017. Guest Editorial: Aquatic Science in the Northwest. 2017. Northwest Science 91(3):230-233.

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Year Published: 2017

Potential paths for male-mediated gene flow to and from an isolated grizzly bear population

For several decades, grizzly bear populations in the Greater Yellowstone Ecosystem (GYE) and the Northern Continental Divide Ecosystem (NCDE) have increased in numbers and range extent. The GYE population remains isolated and although effective population size has increased since the early 1980s, genetic connectivity between these populations...

Peck, Christopher P.; van Manen, Frank T.; Costello, Cecily M.; Haroldson, Mark A.; Landenburger, Lisa; Roberts, Lori L.; Bjornlie, Daniel D.; Mace, Richard D.
Peck, C. P., F. T. van Manen, C. M. Costello, M. A. Haroldson, L. A. Landenburger, L. L. Roberts, D. D. Bjornlie, and R. D. Mace. 2017. Potential paths for male-mediated gene flow to and from an isolated grizzly bear population. Ecosphere 8(10):e01969. 10.1002/ecs2.1969 

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Year Published: 2017

Projected warming portends seasonal shifts of stream temperatures in the Crown of the Continent Ecosystem, USA and Canada

Climate warming is expected to increase stream temperatures in mountainous regions of western North America, yet the degree to which future climate change may influence seasonal patterns of stream temperature is uncertain. In this study, a spatially explicit statistical model framework was integrated with empirical stream temperature data (...

Jones, Leslie A.; Muhlfeld, Clint C.; Marshall, Lucy A.
Jones, Leslie A., Muhlfeld, Clint C., Marshall, Lucy A. 2017. Projected warming portends seasonal shifts of stream temperatures in the Crown of the Continent Ecosystem, USA and Canada. Climatic Change 144(4):641-655

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Year Published: 2017

Spatially explicit population estimates for black bears based on cluster sampling

We estimated abundance and density of the 5 major black bear (Ursus americanus) subpopulations (i.e., Eglin, Apalachicola, Osceola, Ocala-St. Johns, Big Cypress) in Florida, USA with spatially explicit capture-mark-recapture (SCR) by extracting DNA from hair samples collected at barbed-wire hair sampling sites. We employed a clustered sampling...

Humm, J.; McCown, J. Walter; Scheick, B.K.; Clark, Joseph D.
Humm, J., J. W. McCown, B. K. Scheick, and J. D. Clark. 2017. Spatially explicit population estimates for black bears based on cluster sampling. Journal of Wildlife Management 81:1187-1201.

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Year Published: 2017

Statistical design and analysis for plant cover studies with multiple sources of observation errors

Effective wildlife habitat management and conservation requires understanding the factors influencing distribution and abundance of plant species. Field studies, however, have documented observation errors in visually estimated plant cover including measurements which differ from the true value (measurement error) and not observing a species that...

Wright, Wilson J.; Irvine, Kathryn M.; Warren, Jeffrey M .; Barnett, Jenny K.
Wright WJ, Irvine KM, Warren JM, Barnett JK. Statistical design and analysis for plant cover studies with multiple sources of observation errors. Methods Ecol Evol. 2017;00:1–10. https://doi.org/10.1111/2041-210X.12825

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Year Published: 2017

Simulation of daily streamflow for 12 river basins in western Iowa using the Precipitation-Runoff Modeling System

The U.S. Geological Survey, in cooperation with the Iowa Department of Natural Resources, constructed Precipitation-Runoff Modeling System models to estimate daily streamflow for 12 river basins in western Iowa that drain into the Missouri River. The Precipitation-Runoff Modeling System is a deterministic, distributed-parameter, physical-process-...

Christiansen, Daniel E.; Haj, Adel E.; Risley, John C.
Christiansen, D.E., Haj, A.E., and Risely, J.C., 2017, Simulation of daily streamflow for 12 river basins in western Iowa using the Precipitation-Runoff Modeling System: U.S. Geological Survey Scientific Investigations Report 2017–5091, 27 p., https://doi.org/10.3133/sir20175091.

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Year Published: 2017

Assessment of an in-channel redistribution technique for large woody debris management in Locust Creek, Linn County, Missouri

The U.S. Geological Survey, in cooperation with the Missouri Department of Conservation and Missouri Department of Natural Resources, completed a study to assess a mechanical redistribution technique used for the management of large woody debris (LWD) jams in Locust Creek within Pershing State Park and Fountain Grove Conservation Area, Linn County...

Heimann, David C.
Heimann, D.C., 2017, Assessment of an in-channel redistribution technique for large woody debris management in Locust Creek, Linn County, Missouri: U.S. Geological Survey Scientific Investigations Report 2017–5120, 25 p., https://doi.org/10.3133/sir20175120.

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Year Published: 2017

Declines revisited: Long-term recovery and spatial population dynamics oftailed frog larvae after wildfire

Drought has fueled an increased frequency and severity of large wildfires in many ecosystems. Despite an increase in research on wildfire effects on vertebrates, the vast majority of it has focused on short-term (< 5 years) effects and there is still little information on the time scale of population recovery for species that decline in...

Hossack, Blake R.; Honeycutt, R. Ken
Hossack, B. R., and R. K. Honeycutt. 2017. Declines revisited : Long-term recovery and spatial population dynamics of tailed frog larvae after wildfire. Biological Conservation 212:274–278.

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Year Published: 2017

Methods for computing water-quality loads at sites in the U.S. Geological Survey National Water Quality Network

The U.S. Geological Survey publishes information on concentrations and loads of water-quality constituents at 111 sites across the United States as part of the U.S. Geological Survey National Water Quality Network (NWQN). This report details historical and updated methods for computing water-quality loads at NWQN sites. The primary updates to...

Lee, Casey J.; Murphy, Jennifer C.; Crawford, Charles G.; Deacon, Jeffrey R.
Lee, C.J., Murphy, J.C., Crawford, C.G., and Deacon, J.R, 2017, Methods for computing water-quality loads at sites in the U.S. Geological Survey National Water Quality Network: U.S. Geological Survey Open-File Report 2017–1120, 20 p., https://doi.org/10.3133/ofr20171120.

Filter Total Items: 180
January 29, 2016

Precipitation Runoff Modeling System (PRMS) Soil Zone Modules

Presents descriptions of the USGS Precipitation Runoff Modeling System (PRMS) Soilzone module.
 

A mother grizzly bear and her cub in Yellowstone National Park.
December 31, 2015

A mother grizzly bear and her cub in Yellowstone National Park.

A USGS grizzly bear researcher snapped this picture of a mother grizzly bear and her cub in Yellowstone National Park. Recent research shows that fffspring of grizzly bear mothers with a history of human-bear conflicts are more likely to be involved in human-bear conflicts than offspring of mothers without a history of human-bear conflicts. 

Filtering water for eDNA sample collection in Yellowstone National Park between Lewis and Shoshone Lakes.
December 31, 2015

Filtering water for eDNA sample collection.

Filtering water for eDNA sample collection in Yellowstone National Park between Lewis and Shoshone Lakes.

Resolve low-level flight system
October 31, 2015

Resolve low-level flight system

In this image, a helicopter towing a large, cylindrical sensor makes low-level flights as part of a USGS remote geophysical survey, which collects data about underground geology. The scientific system, called Resolve, is operated by CGG Canada Services, Ltd. 

October 21, 2015

What's the Big Idea? — Creating Cleaner Energy from Coal

Elliott Barnhart, a hydrologist with the USGS Wyoming-Montana Water Science Center, describes his work developing what could be a cleaner way to develop coal.

Remote geophysical sensor
October 6, 2015

Remote geophysical sensor

This sensor, called a bird, is tethered to a helicopter during USGS geophysical surveys. As the helicopter flies low over specific areas, the bird transmits electromagnetic waves deep into the ground to measure the below-surface physical properties. This scientific system is called Resolve and is operated by CGG Canada Servives, Ltd. The bird pictured here was used for a

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View of a reservoir looking from the shore line.
June 22, 2015

John Redmond Reservoir

John Redmond Reservoir Outlet, June 22, 2015. Ten thousand cubic feet per second being released.

Scientist Leanne Hanson releasing an unmanned aircraft for a study. USGS photo.
December 31, 2014

Scientist Leanne Hanson launching an unmanned aircraft in 2014

Scientist Leanne Hanson launching an unmanned aircraft in 2014 to help with a study.

Red spotted toad.
December 31, 2014

Red spotted toad.

Red spotted toad.

Little Plover River Wells
December 31, 2014

Little Plover River Wells

Both irrigation wells and municipal wells affect water levels in the Little Plover River, Wisconsin. 

Sampling for aquatic invasive species in the Greater Yellowstone Area.
December 31, 2014

Sampling for aquatic invasive species in the Greater Yellowstone Area.

Sampling for aquatic invasive species in the Greater Yellowstone Area.

December 31, 2014

Bat Thermal Video

Imagery from temperature-sensing cameras showing bats in hibernation. This new footage suggests that bats who warm up from hibernation together throughout the winter may be better at surviving white nose syndrome, a disease caused by a cold-loving fungus ravaging insect-eating bat populations in the United States and Canada. Locations: Gap Cave,125 Cumberland Gap National

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Filter Total Items: 119