Filters: Tags: double-observer (X) > partyWithName: U.S. Geological Survey - ScienceBase (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Kathryn A Schoenecker U.S. Geological Survey Fort Collins Science Center Jacob (Contractor) D Hennig Ecosystems More... Categories Data (2) Tag Types Theme (2) Place (2) USGS Scientific Topic Keyword (2) Harvest Set (2) Tag Schemes None (2) Common geographic areas (2) USGS Thesaurus (2) ISO 19115 Topic Category (2) View Results as: JSON ATOM CSV

Detections of bison from helicopter and aerial thermal infrared imagery in Grand Canyon National Park, 2019-2021 These data are detections of bison in Grand Canyon National Park made during helicopter surveys between 2019 and 2021, and an aerial infrared imagery survey done in February 2020. Categories: Data; Tags: Arizona, Ecology, North Rim, Powell Plateau, USGS Science Data Catalog (SDC), All tags... USGS-EMA-LOW-PL Grand Canyon, Wildlife Biology, abundance estimation, aerial survey, biota, bison, detection probability, double-observer, helicopter, sightability, thermal infrared, Fewer tags Detections of burros from helicopter aerial surveys in the southwestern US, 2016-2018 Feral burros (Equus asinus) and horses (E. ferus caballus) inhabiting public land in the western United States are intended to be managed at population levels established to promote a thriving, natural ecological balance. Like many large ungulate populations, management agencies employ aerial surveys to obtain estimates of horse and burro population sizes. Double-observer sightability (MDS) models perform well for estimating feral horse abundances, yet the effectiveness of these models for use in burro populations is less understood and may be different due to the smaller size, stoic behavior, and cryptic pelage of burros. These models help minimize detection bias, yet bias can be further reduced with models that... Categories: Data; Tags: Arizona, California, Ecology, Fort Irwin National Training Center, Lake Pleasant Herd Management Area, All tags... Sinbad Herd Management Area, USGS Science Data Catalog (SDC), USGS-EMA-LOW-MR Rangeland, USGS-EMA-LOW-SB SMC: Wild horses, Utah, Wildlife Biology, abundance estimation, aerial survey, biota, burro, detection probability, double-observer, helicopter, residual heterogeneity, sightability, Fewer tags