13 datasets found
-
Federal
Behavioral trade-offs and multitasking by elk in relation to predation risk from Mexican gray wolves in Arizona and New Mexico
Department of the Interior —
Predator non-consumptive effects (NCE) can alter prey foraging time and habitat use, potentially reducing fitness. Prey can mitigate NCEs by increasing vigilance,... -
Federal
Pacific Walrus Blubber Lipid Content and Fatty Acid Composition, St. Lawrence Island, 2007-2010
Department of the Interior —
This dataset contains lab-measured percent lipid and fatty acid composition data from Pacific walruses harvested in waters near Saint Lawrence Island. Each row... -
Federal
Median estimates of raven density in California, Nevada, and Idaho (2012 - 2019)
Department of the Interior —
Rasters representing median raven density estimates, calculated from approximately 28,000 raven point count surveys conducted between 2009 and 2019. Estimates were... -
Federal
Estimates of raven impacts on greater sage-grouse nest survival delineated by field site in California, Nevada, and Idaho (2009 - 2019)
Department of the Interior —
These rasters are the result of calculating the difference in Greater Sage-grouse nest survival after a simulated reduction of raven density to 0.1 ravens per square... -
Federal
QFASA Robustness to Assumption Violations: Computer Code
Department of the Interior —
Quantitative fatty acid signature analysis (QFASA; Iverson et al. 2004. Ecological Monographs 74:211-235) has become a common method of estimating diet composition,... -
Federal
Assessing the Robustness of Quantitative Fatty Acid Signature Analysis to Assumption Violations (Supplementary Data)
Department of the Interior —
This dataset contains fatty acid (FA) data expressed as mass percent of total FA for bearded seals, ringed seals and walrus. This is one of many datasets used in... -
Federal
Raven occurrence and density in the Great Basin region of the western United States (2007-2019)
Department of the Interior —
We generated a spatially explicit map of categories of expected occurrence and density associated with predicted concentrations of resident and transient common... -
Federal
qfasar: Quantitative Fatty Acid Signature Analysis in R
Department of the Interior —
An implementation of Quantitative Fatty Acid Signature Analysis (QFASA) in R. QFASA is a method of estimating the diet composition of predators. The fundamental unit... -
Federal
Data to support hierarchical models and decision support maps to guide management of subsidized avian predator densities
Department of the Interior —
We combined approximately 28,000 raven point count surveys with data from more than 900 sage-grouse nests between 2009 and 2019 within the Great Basin, USA. We... -
Federal
Raven observations near Greater Sage-grouse nests in the Great Basin and bi-state regions of the western United States (2009 - 2019)
Department of the Interior —
These tables serve as input data for hierarchical models investigating interactions between raven density and Greater Sage-grouse nest success. Observations were... -
Federal
Fatty acid signature data of potential yellow-billed loon prey in the Arctic coastal plain of Alaska, 2009-2011.
Department of the Interior —
This dataset contains fatty acid data expressed as mass percent of total fatty acids for several species potentially preyed upon by yellow-billed loons. These data... -
Federal
Stable Isotope Data from Diets and Tissues of Captive Bears Fed Experimental Diets
Department of the Interior —
This dataset contains stable isotope incorporation and discrimination results for several sets of feeding experiments with captive brown and polar bears. Experiments... -
Federal
Guam, USGS Closed Population (NWFN) data relating to brown treesnake and prey interactions processed into monthly intervals from 10/2016 - 2/2023
Department of the Interior —
These data represent brown treesnake (Boiga irregularis) captures from a population in a 5 ha natural snake enclosure on Guam from 2016 - 2023. During the period of...
13 datasets found