Yukon bedrock geology 250k, Physiographic regions and Fault Lines:

Gordey, S.P. and Makepeace, A.J. (comp.) 1999: Yukon bedrock geology in Yukon digital geology, S.P. Gordey and A.J. Makepeace (comp.); Geological Survey of Canada Open File D3826 and Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1999-1(D) 

Source

Gordey, S.P. and Makepeace, A.J. (comp.) 1999: Yukon bedrock geology in Yukon digital geology, S.P. Gordey and A.J. Makepeace (comp.); Geological Survey of Canada Open File D3826 and Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Open File 1999-1(D)

Fire History to 1946 – 2011: Wildland Fire Management, Community Services, Yukon Government

Source:

Grods,J.,S.R.Francis,J.C.Meikle and S.Lapointe.2012. Regional Ecosystems of

West Central Yukon. Part 1: Ecosystem Descriptions. Prepared for Government of Yukon, Department of Environment by Makonis Consulting Ltd. and Associates, West Kelowna, British Columbia, Canada.

Ecological Stratification Working Group, 1996. A National Ecological Framework for Canada. Agriculture and Agri-Food Canada, Research Branch, Centre for Land and Biological Resources Research, and Environment Canada, State of the Environment Directorate, Ecozone Analysis Branch, Ottawa/ Hull. Report and national map at 1:7 500 000 

Note: Not all ecodistricts are named in this version of the classification (1995). Two ecodistricts are referenced by number only. Summary values in the Resource Assessment Report were generated from this layer.

A recent classification SLC (2010) is now available. This data was not used for analysis during production of this report. 

Rare and Ecologically Significant Ecosystems: 

Dolomite, Limestone and Unglaciated Areas:

Tracked plants; rare plant and animal species: 

Mineral Licks:

Wetlands:

Forest Older than 140 y:

Local Knowledge Environmentally Important Areas

Key Areas are based on observed locations of wildlife at key times of year, not on habitat assessment. With new information, boundaries and designations of Key Areas can change and additional Key Areas can be identified. Furthermore, Key Areas are not the only sites important for wildlife. Other information sources can identify sites important for wildlife for reasons outside the scope of the WKA Inventory Program. Updates to Key Areas occur only periodically. 

Wildlife Key Areas:

Government of Yukon. 2012. Yukon Wildlife Key Area Inventory. Fish and Wildlife Branch, Department of Environment. Whitehorse, Yukon, Canada 

The Yukon Archaeological Sites Data Base contains records for “known” or recorded archaeological sites. Since archaeologists have not yet systematically investigated many areas of the Yukon, it is possible that unrecorded archaeological sites exist within your area of interest. Archaeological impact assessments are frequently necessary for development projects in areas where there is little known about heritage resources. 

Rivers that were known to support peregrine were selected. Information used included the location of known nest sites and information collected at local knowledge workshops in Dawson City and Whitehorse. Waterbodies included: the Yukon River, a large portion of the Sixty Mile River, the White River, the Forty Mile River, the Indian River, and the portion of the Klondike River from Dawson to the Dempster cut-off.

Source:

Government of Yukon. 2012. Peregrine Habitat Suitability Model. Fish and Wildlife Branch, Department of Environment. Whitehorse, Yukon, Canada.

Porcupine Caribou Concentrated Use Areas:

Ryder, J. L., McNeil, P., Hamm, J., Nixon, W.A., Russell, D. & Francis, S.R. 2007 An integrated Assessment of Porcupine Caribou seasonal distribution, movements, and habitat preferences for regional land use planning in northern Yukon Territory, Canada, Rangifer Special Issue No. 17. 259-270

Fortymile Caribou Habitat Suitability:

Barker, O., and T. Hegel. 2011. Late Winter Habitat Selection by Forty Mile Caribou in the Dawson Region. Yukon Fish and Wildlife Branch Report TR-11- XX, Whitehorse, Yukon, Canada. 

Moose Habitat Suitability

Morrison, S., and M. Wong. 2012. Late winter habitat selection by moose in the Dawson land use planning region. Prepared by Dryas Research Ltd. and Mark Wong Consulting for Yukon Department of Environment. Yukon Fish and Wildlife Branch Report TRC-12-01, Whitehorse, Yukon, Canada. 

Moose Habitat Suitability

Morrison, S., and M. Wong. 2012. Late winter habitat selection by moose in the Dawson land use planning region. Prepared by Dryas Research Ltd. and Mark Wong Consulting for Yukon Department of Environment. Yukon Fish and Wildlife Branch Report TRC-12-01, Whitehorse, Yukon, Canada. 

Pond Dwelling Beaver suitability was classified in a GIS by:

• Selecting waterbodies greater than 10000m2 (assumed

  this is the minimum size at which ponds are deep

  enough to avoid complete freezing over winter).

• Selecting suitably-sized waterbodies with both an inflow

  and an outflow.

• Calculate the % cover of deciduous tree/shrub cover

  within a 100m buffer surrounding suitable waterbodies. Suitable waterbodies were ranked as follows (probability of beaver occurrence): <10% cover (none), 10-30% cover (low), 30-50% cover (moderate), >50% cover (high). 

Muskrat suitability was classified in a GIS by:

• Selecting waterbodies greater than 10000m2 (assumed

  this is the minimum size at which ponds are deep enough to avoid complete freezing over winter; also represents the minimum size of waterbodies selected by muskrats in previous YG muskrat habitat surveys).

• Calculating the % cover of herbaceous vegetation within a 50m buffer surrounding suitably-sized waterbodies (assumed the presence of herbaceous species surrounding the waterbodies was positively related to the presence of herbaceous species within the waterbody).

• Suitable waterbodies were ranked as follows (probability of muskrat occurrence): <10% cover (none), 10-30% cover (low), 30-50% cover (moderate), >50% cover (high). 

Late winter habitat selection by sheep in the Dawson region using resource selection functions (RSFs) built using sheep survey data collected 12-15 March 2009. These RSFs incorporated information on habitat types available to sheep, and those habitat types that sheep were observed using, and calculated relative probabilities of use by sheep for the entire study area. Of the candidate models, the bestsupported model showed that sheep selected for areas with high elevation, high convexity, high ruggedness and a southerly aspect, and selected against areas distant from escape terrain and with northerly aspects. Model validation using k-fold cross-validation showed that this RSF model accurately predicted late winter habitat selection by sheep in the Dawson region.

Government of Yukon 2009. Late Winter Habitat Selection by Sheep in the Dawson Region. Department of Environment. Whitehorse, Yukon, Canada.

Yukon Placer Watershed Atlas. 2012 .

http://mapservices.gov.yk.ca/PlacerAtlas

This online tool provides information available in a Geographic Information System for fish and fish habitat, geology and mining, hydrology, resources, mining and land uses activities, mineral claims, First Nation Traditional Territories and Settlement Land and the results of environmental monitoring. 

Commodity by Tract – Gold (C4Plus)

Kilby, W.E. 2013. Dawson Land Use Planning Mineral Potential Assessment. Yukon Geological Survey, Miscellaneous Report 8. Whitehorse, Yukon, Canada. 

Quartz Mining Activity (as at June 22, 2012) 

The placer potential mapping process consisted of applying a classification rating of 1 (lowest) to 5 (highest) for all the streams within the planning area (Table 1). Factors affecting a stream’s potential included development history and hard rock mineral potential (gold deposit potential). These are described in the following sections. Terrain attributes such as potential overburden thickness, water flow or local topography were not factored into the rating due to the lack of knowledge for most un-mined drainages.

Bond, J. 2013. Placer Potential Map, Dawson Land Use Plan. Yukon Geological Survey. Whitehorse, Yukon, Canada.