A moose population survey was conducted on the Yukon Flats in November/December 2018. This was the first fall survey since 2015. Moose were counted in 97 of 421-5.3mi2 units, of which 63 were stratified high moose density and 34 low moose density. The estimate for the 2,269 mi2 survey area in the western Yukon Flats (Alaska Game Management Unit [GMU] 25D) was 1123 total observable moose (95% CI; 895-1351). Density of moose was 0.49/mi2 or 0.19/km2. The population was comprised of an estimated 908 adults (95% CI; 698-1118) and 199 calves (148-251). Search time averaged 6.0 minutes/mi2. The estimate of total observable moose increased from the lows of 2004-2010. Improved calf survival may have contributed to the population increase in some years. It is unlikely that public harvest of wolves and bears contributed, as harvest intensity is light. Thus, moose density increased in the presence of lightly harvested wolf and bear populations, suggesting that the dynamics of this low density population may sometimes be more complex than previously thought. Moose numbers can fluctuate naturally within a low density equilibrium over a period of approximately a decade, and this fluctuation can be detected with the current survey method.

There are two types of Caribou that inhabit Yukon, Woodland Caribou and Migratory Caribou. Woodland Caribou reside in small herds across Yukon and Northwest Territories where as Migratory Caribou occupy larger herds and migrate south during the winter. This Experience Builder incorporates two embedded ArcGIS Dashboards, which enables mobile use. The Dashboards explore the many Caribou herds in Yukon and monitors their population density and trends. Through visualizing the data with ArcGIS Dashboards, we are able to draw conclusions about population health for both Migratory and Woodland Caribou as well as evaluate risk within the individual herds. InstructionsHere are some ways to interact with this Dashboard.Navigate through the tabs, at the bottom of the page, to discover the different Caribou herds found in Yukon as well as their population density and population trends.Isolate the type of Caribou you wish to explore by selecting either Woodland or Migratory in the upper right corner.Select a Caribou herd from the list on the far right and see how the data changes (web only). Sources Woodland CaribouBarren-ground Caribou Data Yukon Caribou Herds 2018Roads - 1MAccessible Basemap

The population estimate for the western Yukon Flats in Game Management Unit (GMU) 25D (2,269 square miles) was 528 moose with a certainty of +1- 25% at the 90% confidence level. Estimated population density in the high and low density areas was 0.63 and 0.09 moose per square mile, respectively, with an average density estimate of 0.23 moose per square mile. Calves comprised 16% of observed calves and 13% of estimated calves in the total population. Search times averaged 6.2 minutes per square mile.

A moose population survey was conducted on the Yukon Flats in November 2015. This was the first fall survey since 2010 due to a lack of sufficient snow in early winter that caused surveys in 2012-2014 to be cancelled. Moose were counted in 100 of 421-5.3mi2 units, of which 59 were stratified high moose density and 41 low moose density. The estimate for the 2,269 mi2 survey area in the western Yukon Flats (Alaska Game Management Unit [GMU] 25D) was 790 total observable moose (95% CI; 600-980). Density of moose was 0.35/mi2 or 0.13/km2. The population was comprised of an estimated 609 adults (95% CI; 460-759) and 191 calves (126256. Search time averaged 6.7 minutes/mi2. The estimate of total observable moose increased from 2010 to 2015. Improved calf survival may have contributed to the population increase in some recent years. It was unlikely that public harvest of wolves and bears contributed, as harvest intensity was light. Thus, moose density increased in the presence of lightly harvested wolf and bear populations, suggesting that the dynamics of this low density population may sometimes be more complex than previously thought.

Estimated number of persons by quarter of a year and by year, Canada, provinces and territories.

A moose population survey was conducted on the Yukon Flats National Wildlife Refuge in March 2023. Moose were counted in 102 of 421-5.3 mi2 units, of which 67 were stratified high moose density and 35 low density. The estimate for the 2,269 mi2 survey area in the western Yukon Flats (Alaska Game Management Unit [GMU] 25D) was 675 total observable moose (95% CI; 509-841). Density of moose was 0.30/mi2 or 0.11/km2. The population was comprised of an estimated 589 adults (95% CI; 441-736) and 88 calves (49-128). Search time averaged 5.8 minutes/mi2. Spring moose numbers were above the long-term average (average 554, range 300735). The proportion of calves was intermediate relative to past spring surveys. Moose on the western Yukon Flats continue to persist at low densities, which has been documented for >60 years.

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.

This table contains 13 series, with data for years 1926 - 1960 (not all combinations necessarily have data for all years), and was last released on 2000-02-18. This table contains data described by the following dimensions (Not all combinations are available): Geography (13 items: Canada; Newfoundland and Labrador; Prince Edward Island; Nova Scotia ...).

We conducted moose surveys in the western Yukon Flats in March and November 2006. The surveys were initiated to estimate early winter moose abundance in the traditional2,269 mi2 moose survey area and to estimate early and late winter moose densities in lands proposed for exchange between the Yukon Flats National Wildlife Refuge (Refuge) and Doyon, Limited (Doyon). The November 2006 population estimate for the traditional 2269 mi2 western Yukon Flats survey area was 418 moose +1- 21% at the 0.90 confidence level; the mean density estimate was 0.18 moose per mi2 +1- 21%, 0.90 confidence leveL We estimated 40% fewer total moose in 2006 compared to 2001 which is a statistically significant decline (P<0.02). The annual rate of decline from 2001 to 2006 is about 8%. Estimated numbers of bulls, cows and calves all follow this declining trend with decreases in 2001, 2005, and 2004 of 18%, 7% and 40%, respectively. The decrease in moose density is likely due to high mortality rates of cow and calf moose as indicated by reported harvest and low numbers of observed calves in moose surveys. Cows comprise a significant portion of moose harvested throughout the Yukon Flats and account for up to 26% of total harvest in the western Yukon Flats. Although bear harvest has significantly increased in the eastern Yukon Flats it has decreased in the western Yukon Flats. Wolf harvest has increased in the western Yukon Flats since 2002. Decreased bear harvest in the western Yukon Flats may be contributing to decreased calf survival. We infer that the moose population in the western Yukon Flats has the capacity to grow quickly based on previous work that documented a high incidence of twinning and good condition of both cow and calf moose. Protection of breeding age cow moose should be the focus for moose management in the Yukon Flats. This objective can be achieved by increased education, outreach and enforcement efforts in partnership with local tribal governments and local residents.

There were over one million registered Indians in Canada as of December 2020. The region with the largest Indian population was Ontario, with 222 thousand, followed by Manitoba, which counted 164 thousand Indians. The regions with the smallest Indian populations were Yukon, and Northwest Territories.

Unbiased population density estimates are critical for ecological research and wildlife management but are often difficult to obtain. Researchers use a variety of sampling and statistical methods to generate estimates of density, but few studies have compared estimates across methods. During 2016-17, we surveyed Canada lynx (Lynx canadensis) in southwestern Yukon Territory, Canada using track transect counts, hair snares, camera traps, live traps, and Global Positioning System (GPS) collars. From these data, we estimated lynx density with 2 linearly-scaled count methods, 1 spatial mark-recapture method, 3 spatial mark-resight methods, and 1 cumulative-time method. We found up to 5-fold variation in point density estimates despite adhering to method requirements and assumptions in a manner consistent with other studies. Our results highlight the dependency of density estimates on sampling process and model assumptions and demonstrate the value of careful and unbiased sampling design. Further research is needed to fully assess the accuracy and limitations of the many wildlife density estimation methods that are currently in use so that techniques can be appropriately applied to typical study systems and species.

The plate contains four maps of 60 minute rainfalls (in millimetres) for a 2 year return period, a 5 year return period, a 10 year return period and a 25 year return period. Each map has a detailed inset of the Vancouver area. These four maps were not analyzed for the mountainous parts of Canada in British Columbia and the Yukon because of the limited number of stations, the non-representative nature of the valley stations and the variability of precipitation owing to the orographic effects. From the incomplete data, it is impossible to draw accurate isolines of short duration rainfall amounts on maps of national scale. Point values for all stations west of the Rocky Mountain range and in the Yukon have been plotted for durations of less than 24 hours. For the Vancouver metropolitan area, recording rain gauges have been in operation for several years. For some of these stations point rainfall data have been plotted on inset maps. The density of climatological stations varies widely as does population density. In general, the accuracy of the analysis increases with station density. North of latitude 55 degrees North, there are only five stations. Therefore, the isoline analyses represent extrapolations beyond the station values. Whenever sufficient data were available for interpretation, isolines were drawn as solid lines. The scale of the map used for Canada dictates the use of an isoline interval of 8 millimetres.

The Yukon-Kuskokwim Delta (YKD) is the most southerly (60° to 62°N) and the only sub-Arctic breeding area of Pacific brant (Branta bemicla nigricans) supporting an estimated 80% of the Pacific Flyway (PF) population. The remainder breed in Arctic habitats of Alaska, Canada, and Russia to 78°N. Nesting failures due to late springs have been observed at Arctic breeding areas but not on the YKD. Nesting habitat on the YKD is available 2 to 4 weeks earlier than in the Arctic and YKD brant also benefited from shorter migration from staging areas. Dates of ice break-up of the Kuskokwim River at Bethel and 50 percent snow-melt along the lower Kashunuk River from 1969 to 1979 were positively correlated with timing of arrival and nesting (P<0.01) and nest density (P>0.05) but density declined during the study(P<0.01). Clutch size was not affected by timing of break-up or snow-melt (P>O.l) but decreased slightly in late years. Nest success averaged 0.765 throughout the study, and increased (0.850) when , impacts of tidal flooding, predation and subsistence harvest were low. The lack of large scale reproductive failures on the YKD contributes stability to the PF brant population; however, nesting declines at the Kashunuk River and possibly other YKD colonies have reduced this stabilizing effect.