State of the Science

Project Overview The sandbar willow of the Klamath River is used within the Karuk Tribe’s ongoing cultural practices of basketweaving. The willow has been threatened by intensifying fire and dams, but restoration and the recent historical dam removals provide an opportunity to increase the quantity, quality, and access to this important resource. Researchers supported by this Southwest...

The Hemlock Woolly Adelgid (HWA) is an insect causing extensive hemlock tree die-offs in the northeast, and a lack of information on climate adaptation practices is hindering effective forest management. With the overall goal of fostering resilient forests that support northeastern hemlock ecosystems and wildlife, researchers supported by this Northeast-CASC project will work with land...

Project Overview Infectious disease poses a growing threat to wildlife and human health, and managing disease threats is complicated by climatic changes that can change levels of disease risk. Researchers supported by this North Central CASC project will co-develop a method to rank wildlife disease threats under climate change, providing critical useable information to Montana’s wildlife...

Feral horse populations in the southwestern United States, including on tribal lands, are far above sustainable levels. This overpopulation poses threats to rangeland ecosystems as the feral horses compete with native species and livestock for limited resources – which likely will become even more limited with climate change. Researchers supported by this Southwest CASC project will...

Current stormwater management infrastructure and strategies in the northeastern US are built around historical weather data and not the weather that is expected with climate change, like more frequent extreme rainfall. This matters because stormwater can introduce pollution to streams and can cause flooding. Researchers supported by this Northeast CASC project will combine climate data...

Infrastructure development and climate change pose significant threats to migratory bird populations by altering their distributions and habitat. This Northeast CASC-supported research team will use citizen-science and structured monitoring data to identify current and future areas that are important for migratory bird species across the Northeastern US. Researchers will produce high...

Project Overview The iconic grizzly bear of the Greater Yellowstone Ecosystem has exhibited a remarkable recovery in response to concerted conservation actions implemented since its listing as threatened under the Endangered Species Act in 1975. However, information regarding the potential effects and timing of climate change in conjunction with increasing human recreation and...

Project Overview: Extreme weather conditions may disrupt key life cycle events for pygmy rabbits, a species that relies on snow and underground burrows for protection from predators and extreme cold. Researchers supported by this Northwest CASC project will use models to understand how different snow patterns and subsurface temperatures will impact pygmy rabbit habitats. Project outcomes...

Project Overview Collaboration among scientists, managers, and members of the public is critical for developing effective science products that respond to society’s most pressing challenges. To continue these collaborative efforts, USGS recognizes that participatory sciences can be a powerful tool in engaging diverse groups in the process of collecting and interpreting scientific...

As part of the State Wildlife Grant Fund, states are required to submit State Wildlife Action Plans (SWAPs) every 10 years detailing habitats, species, and conservation plans. However, incorporating climate change in SWAPs isn’t required and capacity to do so is limited at most state agencies, resulting in varied consideration of climate change impacts. In support of the revisions to...

Virtually all species are experiencing the effects of modern climate change. Climate-induced extinction rates are accelerating, and up to one-sixth of species are predicted to go extinct by the end of this century. Given the unprecedented rate of modern climate change, species will be increasingly unable to shift in lockstep with emerging climate spaces, and as a result, phenotypic...

Project Overview Sea-level rise, stronger storms, and coral reef bleaching events occurring with climate change threaten infrastructure, livelihoods, and cultural practices in Hawai'i. Researchers supported by this Pacific Islands CASC project will integrate Indigenous Knowledge and scientific research to co-produce climate adaptation strategies and conservation guidance for the...