Data

These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program. This dataset consist of observations of sea otter (Enhydra lutris) fecal samples (spraint). Observers examined fresh spraint piles to identify major prey classes in the samples and to determine sea otter diets in the Gulf of Alaska region.

These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program and describe mussel sampling and observations conducted in the northern Gulf of Alaska. This dataset consists of six comma separated files (.csv): 1) mussel sampling site layout information, 2) mussel counts for mussels greater than 20 millimeters in a quadrat, 3) mussel size measurements for mussels greater...

These data include results from screening tissues of marine organisms for the presence of harmful algal bloom (HAB) toxins: saxitoxin and its related congeners (STX) and domoic acid (DA). Samples collected by USGS or submitted to our laboratory by partners or other stakeholders are screened using commercially available enzyme linked immunosorbent assays (ELISA). A subset of samples...

This data release provides the source data and results of a flood frequency analysis for a streamgage in the Hulahula River Basin, Alaska. Data are provided for one streamgage that had at least 10 years of peak-flow record. The data include streamgage information, PeakFQ input (.txt and .PSF files) PeakFQ output (.PRT, .EXP, and .JPEG files), flood frequency parameters, flood frequency...

This data release contains whole rock major and trace element data for 69 igneous rock samples collected from the Western Alaska Range between 2011 and 2012. The Series field relates to chronological units discussed in Jones et al. (2021). Descriptions are from original collector notebooks and are provided here for informational purposes.

This data release is comprised of three tables containing cosmogenic beryllium-10 and aluminum-26 concentrations and related data from samples collected at four sites along the Charley River in central Alaska in 2019, prepared in 2020 at the University of Vermont (UVM), and measured at the Purdue Rare Isotope Measurement lab (PRIME) in 2021. The file "burialDating_cosmogenic...

This dataset contains analyses of samples representing the Triassic Shublik and Otuk Formations in Alaska. The samples were collected from the Brontosaurus 1 well and measured stratigraphic sections at Surprise Creek and Cape Lisburne. The dataset includes total organic carbon (TOC), Rock-Eval (Tmax) data, geochemical data from inductively coupled plasma-optical emission spectroscopy...

This data release includes 4 child items with geospatial datasets that characterize the distribution of eelgrass (Zostera marina) and seaweeds in waters of southwestern Alaska and Baja California, Mexico. Child Item 1: "Mapping Data of Eelgrass (Zostera marina) Distribution, Alaska Peninsula and Nunivak Island" Child Item 2: "Mapping Data of Eelgrass (Zostera marina) Distribution, Togiak...

This data release includes 2 child items with tracking data for Pacific walrus, a marine mammal that ranges between the Alaska Peninsula, up through the Bering and Chukchi seas, and over to Russia. Child Item 1: "Argos Satellite Tracking Data for Pacific Walrus (Odobenus rosmarus divergens) - Processed Data" -- Quality-controlled data collected from Argos satellite transmitters. Child...

The imagery and annotations presented here were generated while testing an aerial photographic survey design to improve repeatability, transparency, and estimation of variance for annual population estimates of geese staging at Izembek Lagoon, Alaska. This dataset includes 1) 131,031 .JPG images captured from a small fixed-wing occupied aircraft, usually at an altitude of about 457 m...

This data set provides sample information, microsatellite genotype, and NCBI accession numbers for mitochondrial DNA sequences of peregrine falcons (Falco peregrinus) from North America and Russia.

This data release is composed of seven datasets regarding colonial seabirds and forage fish at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. These data were collected to detect changes in the breeding population of Black-legged Kittiwakes and Common Murres on two nesting colonies in lower Cook Inlet and to compare those counts to baseline counts...