Land Management

Through a collaborative effort with multiple state and federal agencies, university researchers, and individual stakeholders, we are producing a set of predictive seasonal habitat maps for greater sage-grouse ( Centrocercus urophasianus) spanning the entirety of the species’ U.S. distribution. This is the largest habitat modeling effort of its kind for the species and uses a large, compiled...

FORT aquatic scientists analyze rings of riparian trees relating tree growth and establishment to historical flow. They then use the tree rings to reconstruct the flow in past centuries. Flow reconstructions discover the frequency and magnitude of past droughts and floods—information that is essential for management of rivers and water supplies. They have pioneered the use of cottonwood, a...

FORT scientists study interactions among river flow, riparian vegetation and channel change at low elevations across the western United States. Cooperators include the National Park Service, Bureau of Land Management, U.S. Fish and Wildlife Service and Bureau of Reclamation. Research areas include reservoir management, control of invasive species, drought response and flood erosion after fires...

FORT scientists established a Common Garden at the Colorado State Forest Service Nursery in Fort Collins, Colorado in 2005 to study the phenology of riparian cottonwood in relation to annual variation in temperature. Phenology is the seasonal timing of life history events including leaf opening, flowering, seed release, bud formation and leaf senescence.

Agricultural land use accounts for over 50 percent of the surface area of the contiguous United States. How these lands are managed has direct and indirect implications for wildlife, water quality, and air quality in terrestrial, aquatic, and marine ecosystems locally and far beyond their extent. This project is focused on ways to greater maximize the potential of the US Department of Agriculture...

The Southwest Montana Sagebrush Partnership (SMSP) team, including land managers, landowners, and scientists, is implementing conifer removal projects encompassing over 55,000 acres of private, state, and federal lands throughout the region. To date, little place-based information exists regarding likely vegetation and bird responses to such treatments in Southwestern Montana. To address this...

Invasive annual grasses are spreading across the sagebrush ecosystem, threatening the survival of native plant species and the wildlife habitats they support. Researchers from the U.S. Geological Survey, Colorado State University, University of Wyoming, the Bureau of Land Management, National Park Service, and the U.S. Fish and Wildlife Service are collaboratively investigating the factors that...

Researchers at USGS are using historical wild horse survey and monitoring records to conduct a study of horse density across sagebrush ecosystems of the western United States. Researchers will develop generalized density maps for the species that will enhance concurrent evaluations into the ecological effects of wild horse populations.

Invasive annual grasses, facilitated by a range of disturbances, are invading many areas within the sagebrush biome. Researchers from the U.S. Geological Survey, Colorado State University, U.S. Fish and Wildlife Service and the Bureau of Land Management are investigating which non-fire disturbances are most associated with the spread of invasive grasses. The findings from this study could guide...

Invasive annual grasses can replace native vegetation and alter fire behavior, impacting a range of habitats and species. A team of researchers from the U.S. Geological Survey, Colorado State University, the Bureau of Land Management, and the U.S. Fish and Wildlife Service are working to identify factors that influence changes in the distribution and abundance of invasive annual grasses (IAGs)...

The National Environmental Policy Act (NEPA) requires federal agencies to assess potential impacts of proposed actions as part of their decision-making processes. Assessing potential cumulative effects is a challenging component of NEPA analyses. The USGS is working with the Bureau of Land Management to develop a process that public land managers can use to strengthen cumulative effects analyses.

Atmospheric nitrogen deposition, changing environmental patterns, and recreation are rapidly altering high elevation ecosystems. This project will evaluate long-term biogeochemical, hydrological, and ecological trends in Rocky Mountain National Park to understand the causes and rates of change in alpine and subalpine waters, soils, and vegetation. Resource managers of high-elevation, protected...