Data

Many non-native invasive grass species increase wildfire activity and recover more quickly than native species. This invasive grass-fire cycle has severe negative consequences for ecosystems, creating a need to understand how different invasive grass species alter fuel characteristics and fire behavior, as well as effective treatments to reduce their spread. We reviewed and compiled...

The yǻyaguak (Mariana swiftlet; Aerodramus bartschi) is an endangered cave-nesting species historically found on Guam and the southern Mariana Islands, Micronesia. The population on Guam has been severely impacted by the introduction of the brown treesnake (Boiga irregularis). We analyzed nest attendance behavior derived from near-infrared videography at the colonies at Mahlac and...

This data release contains model input and postprocessed model output from a set of numerical simulations of hypothetical lahars initiated on Mount Baker, Washington. We constructed a set of landslide sources near the western summit of Mount Baker and simulated their initiation and downslope evolution into long-runout lahars in the Middle Fork of the Nooksack River. These simulations...

Nutrient and soil runoff from agricultural fields in the Upper East River basin contribute to eutrophication in downstream waters like Lake Michigan. Phosphorus is often the limiting nutrient in freshwater ecosystems and the binding of dissolved phosphorus to suspended sediment can reduce its bioavailability. These data provide information about what size particles are binding phosphorus...

Co-developed surface and subsurface hydrologic models for the Upper Colorado River Basin and the Colorado Plateaus principal aquifer system were used to investigate the drivers of change in hydrologic water budget components during contrasting recent wet (1982–1999) and drought (2000–2022) time periods in select headwater subregions of the Upper Colorado River Basin. The hydrologic...

We determined the effects of hypoxia exposure on grass carp larvae survival within certain developmental periods. Our goal was to establish a baseline lethal DO concentration based on both time of exposure and water temperature. In 2023 we used 6 different low dissolved oxygen concentrations (0.2, 0.4, 0.6, 0.8, 1.0 and 1.2 mg/L plus a control of 7.0 mg/L) to test survival during short...

This digital GIS dataset and accompanying nonspatial files synthesize model outputs from a regional-scale volumetric 3D geologic model that portrays the generalized subsurface geology of the Michigan Basin region of Michigan, Wisconsin, Illinois, Indiana, and Ohio. The intent of this product is to rapidly and efficiently synthesize large quantities of geologic data from a wide variety of...

The data represent sediment depth profiles of gamma-emitting radionuclides and major, minor, and trace elements in native soil locations around four mineralized sites in Mohave County, Arizona. The four sites represent breccia pipe uranium deposits in the Grand Canyon Region in various lifecycle stages of mining: EZ2 complex (exploration), Arizona 1 mine (standby), Pinenut mine (closed...

The Chesapeake Bay Land Use/Land Cover (LULC) Database facilitates the characterization of the landscape over time for three discrete time periods at 1-meter spatial resolution. The database was developed by Chesapeake Conservancy (CC) in cooperation with the University of Vermont’s Spatial Analysis Laboratory and U.S. Geological Survey (USGS) as part of a 6-year Cooperative Agreement...

In February 2022, the U.S. Geological Survey (USGS) National Uncrewed Systems Office (NUSO) conducted uncrewed aircraft systems (UAS) remote sensing flights to support biological soil crust (biocrust) research at an experiment site located near Castle Valley, Utah. Researchers at the USGS Southwest Biological Science Center have managed this site for over 50 years to study the effects of

Concentrations of a group of per- and polyfluoroalkyl substances (PFAS) were measured in coastal waters around the island of Oahu, Hawai'i in 2019 and 2020 to provide a measure of exposure to resident fish species commonly harvested for human consumption. These contaminants were sampled using the polar organic chemical integrative sampler (POCIS) which allows for the determination of the...

This data set includes mortality data from acute toxicity tests with juveniles of the mussel, Lampsilis siliquoidea exposed to 6PPD and 6PPDQ. Concurrently collected analytical chemistry and general water quality measurements are included.