Occupied Range of the Yellowstone Grizzly Bear 2006-2020

The grizzly bear distribution boundary represents the estimated geographic extent of occupied range of the Yellowstone grizzly bear population for the period 2006-2020. The distribution boundary was delineated to provide reliable estimations of grizzly bear occupancy throughout time and for use as a monitoring tool in grizzly bear management and conservation.The boundary was delineated by the Interagency Grizzly Bear Study Team (IGBST) using an interpolation method based on grizzly bear VHF telemetry and GPS locations as well as verified observations and signs of grizzly bears inside the Greater Yellowstone Ecosystem during 2006 to 2020.

本灰熊分布边界代表了2006至2020年期间黄石灰熊种群的实际栖息地理范围估算值。划定该分布边界的目的，在于长期可靠地估算灰熊的栖息范围，并将其作为灰熊管理与保护工作中的监测工具。该边界由机构间灰熊研究小组（Interagency Grizzly Bear Study Team, IGBST）基于插值方法完成划定，其数据来源涵盖2006至2020年期间大黄石生态系统（Greater Yellowstone Ecosystem）内的灰熊甚高频遥测（VHF telemetry）与GPS定位数据，以及经核实的灰熊观测记录与活动痕迹。