Fish and Wildlife

The distribution of species across the landscape is of great interest to biologists, owing to a critical need to understand the connectivity of disparate habitats for species that undertake broadscale movements. Indeed, habitat quality and quantity are thought to be important drivers of occurrence and distribution, and numerous studies have demonstrated fitness-related consequences as evidenced in...

The North American Waterfowl Management Plan (NAWMP) represents the foundational and successful effort to manage waterfowl and migratory bird in North America. Continued success of NAWMP depends on maintaining relevance to partners and society over time. Social science research supports NAWMP by providing a better understanding of what people value regarding waterfowl and their habitats.

Environmental stressors that impact habitat and wildlife species include: abiotic factors (for example, land use, temperature); soil, air, and water quality (for example, eutrophication, contaminants); and disturbance (for example, fire, drought, hurricanes, species invasions). Understanding how these stressors impact ecosystems is critical to conservation and management.

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...

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.

Diseases are challenging to manage in wild ungulate populations, particularly when there are many ways the disease can spread. Wildlife management agencies often need to take action to control disease spread, but it is unclear which actions are most effective in constraining disease because the importance of different spread mechanisms is not fully understood. This project will aid state wildlife...

The National Park Service (NPS), U.S. Geological Survey (USGS), U.S. Fish and Wildlife Service (USFWS), and community Citizen Scientists are working together to remove brown treesnakes at War in the Pacific National Historical Park - Asan Beach Unit to aid restoration of native avian and reptile species.

In partnership with the United States Fish and Wildlife Service, and other partners, scientists from USGS Fort Collins Science Center are working to create a suite of prioritization scenarios that will inform adaptive management for Gunnison sage-grouse.

Within areas of overlapping sagebrush and pinyon-juniper ecosystems, wildlife populations are declining due to habitat fragmentation and degradation, changing environments, and human development. However, management to bolster species associated with one ecosystem may result in negative consequences for species associated with the other. Thus, land managers are challenged with balancing which...

USGS researchers will track juvenile Burmese python within Big Cypress National Preserve (BICY) and collect data on snake growth, habitat use, and causes of mortality. Known-fate models will be used to estimate survival and better understand factors that influence survival.

Climate change will expose many species to novel extreme environmental conditions, that may test organisms’ ability to respond to environmental change. Local adaptation, when a species evolves to be more suited for its local environment, can be an indicator of whether a species is likely to persist in the rapidly changing environment. Habitat specialists, like the greater sage-grouse, have evolved...

Widespread anthropogenic development in the sagebrush steppe and shifting drought and wildfire patterns have contributed to the observed dramatic declines of the greater sage-grouse since the 1960s. Alteration of the sagebrush habitat can affect many aspects of the species life history, including survival and local resource use. Over many years, the combined effects of landscape composition on...