Greater Voyageurs Ecosystem Wolf Pack and Population Size Report
November 30, 2022
During 2021-2022, we estimated the area of 9 wolf pack home ranges/territories and estimated the size of 14 wolf packs based on an average of 7.3 independent observations of each pack at the estimated size (i.e., the number of wolves we determined were in a given pack.)
Prior to 2019, the estimated size of many packs were based on 1 or 2 independent observations per pack. The lack of repeated observations likely introduced error because 1 or 2 observations might not be representative of actual pack size (Barber-Meyer 2022). Beginning in 2019, we deployed a large remote camera array across the study area to increase the number of independent observations of each pack. This approach has been highly effective and we have averaged 7.4, 9.8, and 7.3 independent observations of each pack at the estimated size in 2019-2020, 2020-2021, and 2021-2022, respectively. For comparison, the average annual number of independent observations per pack at their estimated size during 2012-2018 was 2.5 with a maximum of 3.7 observations per pack in 2013.
DOWNLOAD THE PDF TO READ THE FULL REPORT
Author(s): Thomas Gable, Austin Homkes, Joseph Bump