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This dataset consists of one table with sample collection locations and results of screening resident wildlife for Cryptosporidium and Giardia in the Alaskan Arctic, 2012-2017. We analyzed feces collected from polar bear, Pacific walrus, Arctic fox, and caribou with MERIFLUOR direct immunofluorescence assay to determine the presence of Cryptosporidium oocysts and Giardia cysts.
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This data set describes nuclear microsatellite genotypes derived from six autosomal loci (AgCA222, Age7.1JT, BV13, BV20, NVH206, NVH195-2) in Cooper's Hawks. Samples originated from blood samples collected from live trapped birds. Version History: First release: December 2020 Revised: February 2022 (ver. 2.0)
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These data are in seven tables relating to surveys of eelgrass (Zostera marina) and widgeongrass (Ruppia maritima) beds in embayments of the north Pacific coast of Baja California, Mexico. The tables provide environmental conditions, eelgrass and widgeongrass abundance, and measurements used to estimate their aboveground biomass. These tables also provide information on percent cover, location, and tide height of eelgrass, widgeongrass and seaweeds, and water conditions during the survey. Version History: First release: March 2022 Revised: April 2023 (ver. 2.0)
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This dataset provides shapefiles and tabular data representing river channel geometries measured on photogrammetric imagery and extracted from a photogrammetric digital elevation model (acquired August 2021) along the Totatlanika River in central Alaska. This is a child item of the USGS Data Release: https://doi.org/10.5066/F7X63KF2
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This dataset provides cycle threshold (Ct) values achieved during qPCR for 6 sex-linked genes, and two autosomal genes, for individuals from 60 species and across 13 orders of birds.
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This dataset is one table with data collected and derived from polar bears sampled in Alaska's southern Beaufort Sea during 1983-2018. Collected data includes demographic and morphometric information. Derived data includes blood-based analyte values determined from whole blood and serum samples. Serum samples were analyzed on an Abaxis VS2 Biochemistry Analyzer and whole blood samples were analyzed on an Abaxis HM5 Diagnostic Analyzer. VS2 analysis quantified values of 13 biochemistry analytes for the period 1983-2016. Complete blood count (CBC) analyte values were quantified from the HM5 analysis for the period 2005-2018. These data were used to (i) generate reference ranges of serum biochemistry analyte values...
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This dataset provides shapefiles and tabular data representing boulders measured on photogrammetric imagery (acquired August 2021) along the Totatlanika River in central Alaska. This is a child item of the USGS Data Release: https://doi.org/10.5066/10.5066/F7X63KF2
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This dataset contains 99 electron microprobe analyses of cassiterite, chalcopyrite, galena, pyrite, sphalerite, and tetrahedrite from seven Sheep Creek drill core samples and one outcrop; and a table that describes the textures, mineralogy, and rock type of 15 thin sections of Sheep Creek drill core and observations from our study and from drill core logging by industry. These data were used to compare this prospect with others in the Bonnifield district. The dataset also contains tables of sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon dates, zircon characteristics (crystal shape, external morphology, internal features, color, aspect ratio, and cathodoluminescence zoning), and 139 U-Th-Pb analyses...
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This dataset provides scaled and geotagged digital photographs of river sediment acquired in August 2021 at 21 sites along the Totatlanika River in central Alaska, and tabular sediment grain size data derived from the photographs. This is a child item of the USGS Data Release: https://doi.org/10.5066/F7X63KF2
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This data package includes four child items with data about sediment size and transport on the Totatlanika River, northern Alaska Range. Child Item 1: "Grain Size Data Collected Along the Totatlanika River, Alaska, August 2021". Scaled and geotagged digital photographs of river sediment and tabular sediment grain size data derived from the photographs. Child Item 2: "Boulder Size Data Collected Along the Totatlanika River, Alaska, August 2021". Shapefiles and tabular data representing boulders measured on photogrammetric imagery. Child Item 3: "Channel Geometry Data Collected Along the Totatlanika River, Alaska, August 2021". Shapefiles and tabular data representing river channel geometries measured on photogrammetric...
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This data release contains three tables of U-Pb zircon isotopic data generated from analyses of 40 metaplutonic and metavolcanic rocks from the Yukon-Tanana Upland of western Yukon and east-central Alaska and one sample from southern Yukon. One of the tables also reports U-Pb data for two titanite analyses for one of the samples. U-Pb zircon ages from analyzed samples range from 363.5 ± 3.8 to 253.1 ± 0.7 Ma and were collected from parautochthonous North America and the allochthonous Yukon-Tanana terrane. U-Pb zircon data include 216 individual analyses by ID-TIMS and 35 individual analyses of two samples by LA-ICP-MS. ID-TIMS analyses of titanite give concordant 206Pb-238U ages of 333 and 338 Ma. Two U-Pb tables...
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This dataset includes tables related to macroinvertebrate collections in streams and springs of the 1002 region of the Arctic National Wildlife Refuge in northeastern Alaska. Macroinvertebrates were collected using kicknets and driftnets in April and August with the goal of comparing populations to those sampled from the same water bodies by the USGS in the 1970s.
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This dataset provides shapefiles and tables of water flow data (acquired in the field August 2021) and inputs for calculating annual exceedance probability discharges along the Totatlanika River in central Alaska. This is a child item of the USGS Data Release: https://doi.org/10.5066/F7X63KF2


    map background search result map search result map Genetic Data From Nesting Steller's Eiders (Polysticta stelleri), Near Utqiagvik, Alaska, 1995-2016 Genetic Data from Cooper's Hawks (Accipiter cooperii), North America Point Sampling Data for Eelgrass (Zostera marina) and Widgeongrass (Ruppia marina) Abundance in Embayments of the North Pacific Coast of Baja California, Mexico Southern Beaufort Sea Polar Bear Blood Based Analyte Data, 1983-2018 Macroinvertebrates From Streams and Springs in the 1002 Region of the Arctic National Wildlife Refuge, Alaska, 2021 New U-Pb Geochronology and Geochemistry of Paleozoic Metaigneous Rocks from Western Yukon and Eastern Alaska Sulfide Electron Microprobe Analyses and Petrography of Mineralized Samples from the Stratabound Sheep Creek Sediment-Hosted Zn-Pb-Ag-Sn Prospect, and SHRIMP U–Pb Zircon Data for Metaigneous Rocks in the Bonnifield Mining District, Healy Quadrangle, Alaska Cryptosporidium and Giardia Occurrence Data in Wildlife from Arctic Alaska, 2012-2017 Sediment Transport Data from the Totatlanika River, Alaska, August 2021 Grain Size Data Collected Along the Totatlanika River, Alaska, August 2021 Boulder Size Data Collected Along the Totatlanika River, Alaska, August 2021 Channel Geometry Data Collected Along the Totatlanika River, Alaska, August 2021 Water Discharge Data Collected and Modeled Along the Totatlanika River, Alaska, August 2021 Boulder Size Data Collected Along the Totatlanika River, Alaska, August 2021 Channel Geometry Data Collected Along the Totatlanika River, Alaska, August 2021 Genetic Data From Nesting Steller's Eiders (Polysticta stelleri), Near Utqiagvik, Alaska, 1995-2016 Grain Size Data Collected Along the Totatlanika River, Alaska, August 2021 Water Discharge Data Collected and Modeled Along the Totatlanika River, Alaska, August 2021 Sediment Transport Data from the Totatlanika River, Alaska, August 2021 Sulfide Electron Microprobe Analyses and Petrography of Mineralized Samples from the Stratabound Sheep Creek Sediment-Hosted Zn-Pb-Ag-Sn Prospect, and SHRIMP U–Pb Zircon Data for Metaigneous Rocks in the Bonnifield Mining District, Healy Quadrangle, Alaska Macroinvertebrates From Streams and Springs in the 1002 Region of the Arctic National Wildlife Refuge, Alaska, 2021 Point Sampling Data for Eelgrass (Zostera marina) and Widgeongrass (Ruppia marina) Abundance in Embayments of the North Pacific Coast of Baja California, Mexico New U-Pb Geochronology and Geochemistry of Paleozoic Metaigneous Rocks from Western Yukon and Eastern Alaska Southern Beaufort Sea Polar Bear Blood Based Analyte Data, 1983-2018 Cryptosporidium and Giardia Occurrence Data in Wildlife from Arctic Alaska, 2012-2017 Genetic Data from Cooper's Hawks (Accipiter cooperii), North America