Data

This dataset consists of a complete set of audio recordings collected near a large walrus haulout at Point Lay, Alaska, during September of 2024. The recordings were collected using the Song Meter Mini 2 (Wildlife Acoustics, Inc., Maynard, MA) at two sites, one within 150 m of a large walrus herd resting on shore and one placed more than 4 km to the south of the herd directly under the...

These data consist of the behavioral responses of Pacific and Yellow-billed Loons to helicopter overflights and ground-based human activity in disturbed vs. undisturbed areas, as well as nest success in the summers of 2016 and 2017 at two field camps in the Fish Creek watershed, NPR-A.

This data release contains one table with heat shock protein 70 (HSP70) abundance measurements of Pacific salmon (Oncorhynchus spp.) muscle samples, collected from fish occupying freshwater in various Alaskan watersheds. Water temperatures associated with a sampled fish are also included in the dataset, when available.

Samples from the Alaska Placer Concentrate Collection (APCC) were retrieved from the USGS National Geochemical Sample Archives and submitted for mineralogical analysis at the Colorado School of Mines. The APPC contains samples from placer mining operations throughout Alaska. The original collection contained approximately 5,000 samples that were collected by U.S. Geological Survey...

This dataset contains measurements of in situ benthic biofilms from rivers of northwest Alaska during summer and fall 2016-2019. Measurements were made using a Benthotorch (bbe Moldaenke, Kiel, Germany) hand-held fluorometer, which distinguishes taxa (cyanobacteria, green algae, diatoms) and provides estimates of standing biomass.

These data are in three tables with age data for river terraces on the Marsh Creek anticline, from samples collected at sites along Marsh Creek and the Katakturuk River in Arctic Alaska. The tables include: (1) Carbon-14 ages, (2) Optically Stimulated Luminescence (OSL) age, and (3) Cosmogenic Beryllium-10 concentrations.

These data are in one table and contain information on the location, age, sex, and measurements (mass, ninth primary, culmen, and total tarsus) of Steller's Eiders during the flightless molt period. Captures took place at Izembek and Nelson Lagoons on the north side of the Alaska Peninsula.

These data were part of a tracking study of adult female caribou from the Nelchina Herd in Alaska. The dataset is comprised of two comma separated values (.csv) files. Data includes: 1) processed (i.e., erroneous locations removed) GPS locations for caribou, received once per 7 hours (October 1999 to October 2002), and 2) spatial, temporal, and biological attributes of the female caribou...

This dataset provides walrus haulout group outlines in a shapefile format. These data are based on visual interpretation of imagery from aerial surveys by a small uncrewed aerial system (sUAS) operated by the U.S. Geological Survey Alaska Science Center, over large groups of walruses resting onshore near Point Lay, Alaska during September of 2024.

This dataset describes the number and detection of Giardia cysts and Cryptosporidium oocysts in water samples collected from creeks and lakes in Anchorage, Alaska during 2021.

This data release contains information derived from fishing efforts and sampled fish from the nearshore Beaufort Sea, Alaska, 2021-2023, as part of a study investigating red-throated loon productivity and diet. The datasets include six tables comprising 1) catch per unit effort (CPUE) data, 2) field-measured lengths of fish (mm), 3) the energy density (kJ/g) and whole-body energy (kJ) of...

This dataset is one table with demographic, morphometric, and blood analyte measurements from whole blood and serum samples taken from a subset of polar bears sampled in Alaska's southern Beaufort Sea during 1989-2012. The measured blood analytes include: blood urea nitrogen, creatinine, glucose, total protein, hemoglobin, red blood cell count, packed cell volume, and hemoglobin A1c...