76 datasets found
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Federal
Food Web Data, Colorado River Corridor, Grand Canyon, Arizona, 2006
Department of the Interior —
These data were compiled for a manuscript that examines the riverine food-web structure of the Colorado River below Glen Canyon dam to its confluence with Lake Mead.... -
Federal
Assessment of Mercury, Mercury Stable Isotopes, and Trace Metals in Waters, Sediments, and Biota from Great Salt Lake, Utah
Department of the Interior —
Great Salt Lake (GSL) is a designated Site of Hemispheric Importance for migratory birds by the Western Hemisphere Shorebird Reserve Network. Elevated mercury (Hg)... -
Federal
Total mercury, methylmercury, and isotopic composition in various life stages of boreal chorus frogs (Pseudacris maculata) at two subalpine ponds in the Rocky Mountains, CO, USA, 2015
Department of the Interior —
Mercury is an atmospherically transported contaminant found even in relatively pristine habitats. Once accumulated at the base of the food web, mercury can move... -
Federal
Data describing a predatory fish invasion on a riverine food web.
Department of the Interior —
Catfishes are opportunistic feeders that are among the world's worst invasive species. Flathead catfish Pylodictus olivaris -- a large predatory catfish -- were first... -
Federal
Western sandpiper diet composition in south San Francisco Bay, CA
Department of the Interior —
Diet composition can be influenced by age- and sex-related factors including an individual’s morphology, social status, and acquired skills; however, specialization... -
Federal
Bat echolocation data recorded using Song Meter SM4 acoustic recorder and Echo Meter Touch 2 bat detector paired with insect prey availability, Grand Canyon National Park, Arizona, 2022
Department of the Interior —
These data were compiled as part of an effort to compare the relative data quality and modeling performance of bat data recorded with two different acoustic... -
Federal
Properties that influence pond-breeding salamander density and predation in midwestern United States ephemeral wetlands
U.S. Environmental Protection Agency —
Ephemeral wetlands provide habitat for a variety of taxa and are often critical breeding locations for amphibians. Although the impacts of abiotic properties of... -
Federal
Sediment Biogeochemistry and Subsequent Mercury Biomagnification in Wetland Food Webs of the San Francisco Bay, CA (ver. 2.0, December 2023)
Department of the Interior —
Methylmercury (MeHg) is a globally pervasive contaminant that biomagnifies in food webs and can reach toxic concentrations in consumers at higher trophic levels,... -
Federal
Proximal and distal factors associated with the decline in secondary invertebrate prey production in the Colorado River, Glen Canyon, Arizona.
Department of the Interior —
Using a bioenergetic model, demographic data for the Rainbow Trout (Oncorhynchus mykiss) population were compiled and used to estimate total prey consumption in the... -
Federal
Pacific Sand Lance Energy Density, Length, and Age, Prince William Sound, Alaska, 2012-2016
Department of the Interior —
This data set documents the age, length, dry mass energy density, and dry mass of age-0 and age-1 Pacific sand lance captured in Prince William Sound Alaska each July... -
Federal
Great Lakes Research Vessel Operations 1958-2018: Reference. (ver. 3.0, April 2019)
Department of the Interior —
The RVCAT database contains data that have been collected on various vessel operations on the Great Lakes and select connecting waterways. This section of Reference... -
Federal
Macrozooplankton Hydroacoustic Index Data from Prince William Sound, Alaska
Department of the Interior —
These data are part of the Gulf Watch Alaska (GWA) long term monitoring program, pelagic monitoring component. This dataset consists of one table, providing... -
Federal
Food web fatty acids and stable isotopes in the Upper Mississippi River Basin 2013-2014: Data
Department of the Interior —
This dataset includes information from multiple taxa collected from four main reaches in the Upper Mississippi River Basin, including La Grange reach of Illinois... -
Federal
Mercury concentrations and stable isotope ratios for California black rails and their invertebrate prey from wetlands of the San Francisco Bay, CA
Department of the Interior —
Methylmercury concentrations and stable isotope ratios were measured from back feathers of California black rails (Laterallus jamaicensis coturniculus) and six taxa... -
Federal
Data from the Capture and Collection of Non-Die-Off Seabirds Across Alaska
Department of the Interior —
This data package contains one table with morphometric and diet information for "non-die-off" seabirds captured and collected in southcentral and southwest Alaska.... -
Federal
White sturgeon fine-scale habitat model archive, Kootenai River near Bonners Ferry, Idaho, 2017-2022
Department of the Interior —
The two-dimensional (2D) hydraulic flow model iRIC FaSTMECH (Nelson, 2003) was used to simulate hydraulic conditions in the Kootenai River near Bonners Ferry, ID... -
Federal
Data entry for PCB concentrations in riparian spiders (Tetragnathidae) consistently reflect concentrations in water and aquatic macroinvertebrates, but not sediment: Analysis of a seven-year field study
U.S. Environmental Protection Agency —
Five years of data over a seven-year investigation at a PCB contaminated-sediment site to investigate if concentrations in spiders were consistently correlated with... -
Federal
Mercury and Methylmercury Stable Isotope Measurements in Giant Petrels
Department of the Interior —
Methylmercury (MeHg) and total mercury (HgT) stable isotope measurements were made by the USGS Mercury Research Lab (MRL) in different organs on the Giant Petrels... -
Federal
Lake Erie Collaborative Science and Monitoring Initiative 2014
Department of the Interior —
In 2014, the USGS Lake Erie Biological Station participated in the Coordinated Science and Monitoring Initiative (CMSI) program, a program founded by the U.S.... -
Federal
Assessment of mercury sources in Alaskan lake food webs (ver 1.1, September 2023)
Department of the Interior —
This data release includes results of raw water, soil, seston, and fish tissue samples collected from 14 lakes within Lake Clark National Park and Katmai National...
76 datasets found