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Filter Total Items: 13193

Summary of Stranded Southern Sea Otters, 1985-2018 (ver. 3.0, June 2021)

The southern sea otter (Enhydra lutris nereis), also known as California sea otter, was listed as threatened in 1977 under the Endangered Species Act. Since 1985, stranded otters from throughout their California coastal range have been collected and analyzed to inform resource management on recovery and conservation of the species. This data set is a complete 31 year compilation. Future annual str

Data release for Lake levels in a discontinuous permafrost landscape: Late Holocene variations inferred from sediment oxygen isotopes, Yukon Flats, Alaska

During recent decades, lake levels in the Yukon Flats region of interior Alaska have fluctuated dramatically. However, prior to recorded observations, no data are available to indicate if similar or more extreme variations occurred during past centuries and millennia. This study explores the history of Yukon Flats lake origins and lake levels for the past approximately 5,500 years from sediment an

Lung Bioassay of Ground Dwelling Mammals from the Grand Canyon Uranium Breccia Pipe Region Using Scanning Electron Microscopy

Small mammal lung tissue sections were examined to help assess the effects of weathering on bioavailability and toxicity from sites in different phases of the mine cycle within the Grand Canyon area. Hematoxylin and eosin slides of lung tissue from brush mouse, deer mice, and pocket gophers were examined by a veterinary pathologist who marked areas of the tissue that showed normal, inflammation, b

Near-real-time Herbaceous Annual Cover in the Sagebrush Ecosystem, USA, July 2018

This dataset provides a near-real-time estimate of 2018 herbaceous annual cover with an emphasis on annual grass (Boyte and Wylie. 2016. Near-real-time cheatgrass percent cover in the Northern Great Basin, USA, 2015. Rangelands 38:278-284.) This estimate was based on remotely sensed enhanced Moderate Resolution Imaging Spectroradiometer (eMODIS) Normalized Difference Vegetation Index (NDVI) data g

Arctic cisco stable isotope data, Prudhoe Bay August 2009

This data set documents the carbon and nitrogen stable isotope ratios of age-0 Arctic cisco (Coregonus autumnalis) captured in Prudhoe Bay, Alaska in August 2009. The analysis of this data was published in von Biela et al. 2013 (Polar Biology 36:137-146, doi:10.1007/s00300-012-1244-x). All stable isotope results were provided by the University of Alaska Anchorage Environmental and Natural Resour

Arctic cisco stomach content data, Prudhoe Bay, August 2009

This data set documents the stomach contents of age-0 Arctic cisco captured in Prudhoe Bay, Alaska in August 2009. This data was published in von Biela et al. 2013 (Polar Biology 36:137-146). The data consists of counts of specific zooplankton taxa from individual fish stomachs.

Kuskokwim Bay chum salmon (Oncorhynchus keta) energy density, distribution, and stomach data, 2004

This data set documents the dry mass energy density, distribution, and stomach contents of age-0 chum salmon (Oncorhynchus keta) captured in the Kuskokwim Bay estuary in May and June 2004. The analysis of this data was published in Burrill et al. 2018 (DOI :10.1007/s00300-018-2297-2.).

Data and equations used to reconstruct historical daily streamflows in northern New Jersey and southeastern New York, water years 1922-2010

This U.S. Geological Survey (USGS) data release provides daily reconstructed streamflows at 53 sites in selected subbasins in northern New Jersey and southeastern New York for water years 1922-2010; data and equations used to determine the reconstructed flows are included. These subbasins contain one or more surface-water diversions that are currently operated or have been operated in the past by

Pacific Northwest Avian Scavenger Lead and Mercury Dataset, 2012-2016

The dataset includes the bird species, region where sampled, sampling site, capture location, mercury concentration in whole blood, lead concentration in whole blood, sulfur stable isotope concentration in blood plasma, carbon isotope concentration in blood plasma, whole blood ALAD activity, and fecal corticosterone concentrations.

Habitat diversity and longitudinal connectivity limit the functional diversity and redundancy of fishes in a large river: Data

The csv file includes all individual non-young-of-year fishes collected in unstructured channel borders of the Upper Mississippi River using daytime electrofishing from 1993 through 2015, following LTRM protocols. Data was collected via the Long Term Resource Monitoring element of the U.S. Army Corps of Engineers Upper Mississippi River Restoration program and the Illinois Natural History Surveys

Plant production responses to precipitation differ along an elevation gradient and are enhanced under extremes (Northern Arizona, 1991-2016)

This dataset is from a precipitation manipulation experiment conducted at five grassland sites along an elevation gradient near Flagstaff, AZ. The data consist of pre- (1991 - 2010, 2015) and post-experimental (2016) treatment plant production and precipitation measurements. The plant production measurements were taken from satellite and hand-held spectroradiometer, in addition to plot-based harve

Groundwater-Surface Water Interactions in Ellerbe Creek in Durham, North Carolina, 2016-2018

A hydrologic study involving the investigation of groundwater-surface water interactions along Ellerbe Creek, a major tributary to upper Falls Lake, was conducted in order to determine if groundwater is a likely source of nitrate input to the stream. Groundwater-surface water interactions were characterized by synoptic streamflow measurements, groundwater-level monitoring, hydrograph-separation me