Stable Isotope Data from Diets and Tissues of Captive Bears Fed Experimental Diets

This dataset contains stable isotope incorporation and discrimination results for several sets of feeding experiments with captive brown and polar bears. Experiments were designed to determine the effects of dietary lipid content and fasting behavior on discrimination in blood, hair, and fat. Data are divided into three components of the study: one to estimate isotopic discrimination with varying dietary lipid content, one to estimate the potential effects of fasting on tissue isotope values, and one to determine incorporation rates of isotopes in various tissues. The experiments were conducted between 2009 and 2013 with captive grizzly bears at Washington State University and captive polar bears at the Oregon and Alaska zoos.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20220725164314
identifier USGS:ASC50
metadata_type geospatial
modified 20201125
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 1f67ea9d769e3929a8d6ebb857a0f06a8fe310b0
source_schema_version 1.1
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • biota
  • carbon-isotopes-carbon-13
  • carbon-isotopes-isotopes
  • ckan
  • diet-composition
  • diet-estimation
  • diets-animal-nutrition
  • diets-nutrition
  • geo
  • geoss
  • national
  • north-america
  • predator-prey
  • united-states
  • usgs-asc50
isopen False
license_id notspecified
license_title License not specified
maintainer U.S. Geological Survey, Alaska Science Center
maintainer_email ascweb@usgs.gov
metadata_created 2025-11-20T12:38:50.915471
metadata_modified 2025-11-20T12:38:50.915476
notes This dataset contains stable isotope incorporation and discrimination results for several sets of feeding experiments with captive brown and polar bears. Experiments were designed to determine the effects of dietary lipid content and fasting behavior on discrimination in blood, hair, and fat. Data are divided into three components of the study: one to estimate isotopic discrimination with varying dietary lipid content, one to estimate the potential effects of fasting on tissue isotope values, and one to determine incorporation rates of isotopes in various tissues. The experiments were conducted between 2009 and 2013 with captive grizzly bears at Washington State University and captive polar bears at the Oregon and Alaska zoos.
num_resources 2
num_tags 17
title Stable Isotope Data from Diets and Tissues of Captive Bears Fed Experimental Diets