Filters: Date Range: {"choice":"week"} (X)
Folders: ROOT > ScienceBase Catalog > Alaska Science Center (ASC) > _Ecosystems ( Show direct descendants )
7 results (17ms)
Location
Folder
ROOT _ScienceBase Catalog __Alaska Science Center (ASC) ____Ecosystems
Filters
Date Types (for Date Range)
Contacts Categories Tag Types Tag Schemes |
These data were part of a pilot tracking study of three adult female caribou from the Fortymile 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 hour for 6 months (October 1998 to April 1999), and 2) spatial, temporal, and biological attributes of three female caribou tracked during the study.
This dataset consists of the complete set of aerial imagery and data from walrus haulouts collected by unoccupied aerial system (UAS) surveys near Pt. Lay, Alaska, during the autumns of 2018 and 2019. The data include: 1) georeferenced digital aerial imagery and flight logs from UAS surveys, and 2) orthoimages derived from the aerial imagery and flight logs by standardized structure from motion algorithms.
Categories: Data;
Tags: Aerial photography,
Aerial surveys,
Alaska,
Animals/Vertebrates,
Aquatic ecosystems,
Available here are tracking data of Caribou, a terrestrial mammal that ranges between the Alaska and Canada. These data were collected from animals marked in interior and northern Alaska to understand seasonal movement patterns and the effects of fire regime on the movements. USGS Alaska Science Center scientists collect data from wildlife tracking devices to: determine locations of animals throughout their annual cycles, understand patterns of habitat use, quantify time spent on various behaviors, and identify geographic areas repeatedly used by wildlife that may indicate sites of importance to species and populations. Tracking data from other wildlife species can be found at: https://doi.org/10.5066/P9VYSWEH.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alaska,
Alaska Range,
Animal tracking,
Animals/Vertebrates,
Biota,
These data are in one table with age and sex composition counts of groups of walruses on ice floes in the northern Bering and Chukchi Seas. Counts were collected by visual observations from boats.
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 (HbA1c).
These data are three sets of aerial photos used to estimate the number of walruses at a haulout near Pt. Lay, Alaska in September 2014. They were collected during photographic aerial surveys of the only major haulout that occurred on the eastern shores of the Chukchi Sea after sea ice receded beyond the continental shelf on 25 and 27 September 2014.
Categories: Data;
Tags: Aerial photography,
Aerial photography,
Aerial surveys,
Alaska,
Animals/Vertebrates,
This dataset consists of the complete set of processed aerial imagery and survey data from walrus haulouts collected by unoccupied aerial system (UAS) surveys near Pt. Lay, Alaska, during the autumn of 2024. The data include orthoimages derived from georeferenced optical three band (red, green, blue) aerial images through the standardized structure from motion algorithms. These high-resolution images are considered sensitive and are not publicly accessible. Requests for access will be reviewed by the USGS Alaska Science Center and the Eskimo Walrus Commission (EWC).
|
![]() |