Summary
An aerial survey was conducted from February 8 to 25, 2022, over an area of 33,203 km², covering the Detour woodland caribou population’s winter range as delineated by the Québec government. This population, whose range overlaps the provinces of Québec and Ontario, has sometimes been referred to as the La Sarre herd or the Quebec-Ontario Frontier herd in Québec. A total of 338 animals were enumerated during the survey, including 83 in Québec and 255 in Ontario. At the time of the survey, calves accounted for roughly 22.4% of the population, giving a recruitment figure of 39.9 calves/100 females. The sex ratio was 37.8 males per 100 females. Based on detection rates estimated during the survey, the total abundance of the Detour population in winter 2022 would be between 446 and 465 individuals. This survey achieved the first abundance estimate for the entire cross-border Detour population. Comparison of the present results with those from earlier work is limited, since the latter covered only certain portions of the population's range. Nevertheless, there are several indications that the Detour population has undergone a reduction in abundance since the 1980s.
File
Sector(s):
Wildlife
Categorie(s):
Report
Theme(s):
Wildlife
Author(s)
SZOR, Guillaume, Guillaume GINGRAS, Alan A. ARSENAULT
Year of publication :
2023
Format :
ISBN
978-2-550-95788-1
Keywords :
Woodland caribou, aerial survey, Quebec, Ontario, wildlife
This publication exists in other language: Inventaire aérien de la population de caribous forestiers (Rangifer tarandus caribou) Detour
