Data for Moose Population Survey on Western Yukon Flats NWR - Fall, November 2010

A moose population survey was conducted on the Yukon Flats National Wildlife Refuge in November 2010. The estimate for the 2,269mi2 survey area in the western Yukon Flats (Game Management Unit [GMU] 25D) was 440 moose (95% confidence interval; 294-587 moose). Density of moose was 0.19/mi2. The population was comprised of 265 cows (95% CI; 170-361), 85 calves (45-125), and 93 bulls (49-137). Search time averaged 6.5 minutes/mi2. The 2010 estimate of total moose was 10% less than the November 2008 estimate of 490 (412-569). Due to fog and winds in mountainous terrain, 7 units went unsampled, 3 of which had good numbers of moose in past surveys. Accounting for the 7 unsampled units increased the estimate of total moose to approximately 460, using averages of counts in those units since 2004.