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USGS | 2019
To evaluate the health and status of wolf populations in east-central Superior National Forest (SNF) of northeastern Minnesota, the USGS Northern Prairie Wildlife Research Center monitors their…
USGS | 2019
Migratory species depend on a chain of habitats for survival, including breeding habitats, overwintering sites, and migratory stopover locations. Barrier islands in the northern Gulf of Mexico…
USGS | 2019
When nightly migration starts or ends, birds transition vertically through the airspace where there is the potential for collision with anthropogenic structures. Factors that increase collision risks…
USGS | 2019
Data suggest that long-tailed duck populations are in decline. As a result, efforts have been made to better understand their population distributions through satellite telemetry studies. In previous…
USGS | 2019
The Central Valley of California is one of the most productive agricultural regions of the United States and irrigated agriculture is one of the heaviest consumers of water resources, so…
USGS | 2019
The rich archive of Landsat imagery combined with the Operational Simplified Surface Energy Balance (SSEBop) model can be used to estimate and map actual evapotranspiration (ET) across large basins…
USGS | 2019
Carbonate precipitation can occur where groundwater enters lakes and supplies chemicals missing from the lake, creating carbonate mounds called tufa mounds or microbialites. These precipitates can…
USGS | 2019
The USGS is developing innovative technologies and approaches for measuring river discharge using remotely sensed data. Given the expense associated with remote sensing from conventional aerial…
USGS | 2019
Cyanobacterial blooms in eutrophic inland waters are a worldwide concern and are exacerbated by high nutrient inputs and warm waters. Blooms are appearing with increasing frequency in water bodies…
USGS | 2019
Wetlands and surface waters are critically important for both natural and anthropogenic processes including climate regulation, the maintenance of biodiversity, and the provision of ecosystem…
USGS | 2019
Obtaining timely, accurate information on streamflow in Alaska’s rivers is difficult because gaging stations are sparse, with many located in remote inaccessible areas. Even for established gages,…
USGS | 2019
Satellite images and streamgages are the two most common measurement tools used to assemble a record of historical water inundation dynamics, but access to necessary tools and analysis software is…