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We evaluate mortalities for population segments within the DMA by deriving estimates of total mortality for independent-age (≥2 years old) females and independent-age males, including estimates of unknown/unreported mortalities based on Cherry et al. (2002). We then determine the total annual mortality rate for these segments as a percent of their respective population estimates. For dependent-age bears (<2 years old), we determine the percent of human-caused mortality relative to size of the population segment but do not include estimates of unknown/unreported mortality. Mortality data in this data release represent the individual records documented by the Interagency Grizzly Bear Study Team on an annual basis....
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These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data. The Interagency Grizzly Bear Study Team (IGBST) evaluates mortalities for population segments within the DMA by deriving estimates of total mortality for independent-age (2 years or older) females and independent-age males, including estimates of unknown/unreported mortalities based on Cherry et al. (2002). We then determine...


    map background search result map search result map Documented known and probable grizzly bear mortalities in the Greater Yellowstone Ecosystem, 2015-2022 (ver. 2.0, April 2023) Provisional documented known and probable grizzly bear mortalities in the Greater Yellowstone Ecosystem, 2023 (Provisional Release, updated 2023-11-13) Documented known and probable grizzly bear mortalities in the Greater Yellowstone Ecosystem, 2015-2022 (ver. 2.0, April 2023) Provisional documented known and probable grizzly bear mortalities in the Greater Yellowstone Ecosystem, 2023 (Provisional Release, updated 2023-11-13)