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NPS | 2021
The Yukon River basin encompasses 832,000 square-kilometers and is one of Earth's largest boreal-Arctic rivers. Characterized by a long, frozen winter season, the river demonstrates an abrupt ice…
NPS | 2021
Twenty years ago, ecological studies were often limited by the number of times biologists could find (relocate) their study animals. With the advent and now widespread use of Global Positioning…
NPS | 2021
The snow season has become shorter and the growing season longer over the past 20 years in Alaska's Arctic National Parks. The NPS Arctic Inventory and Monitoring Network (ARCN) uses MODIS (Moderate…
FWS | 2021
The potential for large changes in the amount and distribution of surface water in arctic landscapes is high given climate-induced changes in permafrost. Because changes in surface water have…
FWS | 2021
Wetlands make up less than 1% of West Virginia’s land surface but are critical habitat for nearly one-fourth of its species, including 44% of its rare plant species. They also provide other benefits…
FWS | 2021
The New Mexico meadow jumping mouse (Zapus hudsonius luteus), which was listed as endangered in 2014, historically ranged throughout the Middle Rio Grande River Valley in New Mexico and along…
FWS | 2021
The FWS is using airborne remote sensing technologies to enhance migratory bird surveys to 1) enhance safety of aircrews conducting surveys by allowing flight at higher altitudes, 2) improve the…
FWS | 2021
Abandoned gas and oil wells are commonly a source of greenhouse gas (GHG) emissions and can leak hydrocarbon-related fluids such as oil or brine, particularly when unplugged wells go undetected over…
FWS | 2021
Mixed composition and bottomland hardwood forests are essential habitat for imperiled songbird populations on Texas and Oklahoma National Wildlife Refuges (NWR). Point-count data were collected for…
FWS | 2021
Sea level rise inundation on important Department of Interior (DOI) conservation lands was estimated using U.S. Geological Survey (USGS) 3D Elevation Program (3DEP) high-resolution light detection…
FWS | 2021
Accelerating declines and geographic shifts of salt marshes and species of conservation concern in the northeastern United States have prompted land managers to revise management objectives and…
FWS | 2021
Nearly 1 million Attwater’s greater prairie-chickens (Tympanuchus cupido attwateri) once occupied 6 million acres of coastal prairie grasslands in Texas and Louisiana. Loss and fragmentation of…