. The Canadian field-naturalist. 420 The Canadian Field-Naturalist Vol. 95 100 -1. PICKLE NORTH CARIBOU L. WETIKO LAKE TO HILLS AREA LITTLE SACHIGO L. HUDSON BAY TYRRELL FOREST- LOWLANDS SEA TUNDRA BEACH TRANSITION Figure 2. Distribution of habitats in northwestern Ontario and northeastern Manitoba based on habitat sampling during transects. ratios of 30:70 to 70:30 deciduous to coniferous vege- tation in the canopy. In order to increase the sample size in individual habitats we combined closed and open canopy categories for each height and physiog- nomy grouping. Within any region, a given ha
. The Canadian field-naturalist. 420 The Canadian Field-Naturalist Vol. 95 100 -1. PICKLE NORTH CARIBOU L. WETIKO LAKE TO HILLS AREA LITTLE SACHIGO L. HUDSON BAY TYRRELL FOREST- LOWLANDS SEA TUNDRA BEACH TRANSITION Figure 2. Distribution of habitats in northwestern Ontario and northeastern Manitoba based on habitat sampling during transects. ratios of 30:70 to 70:30 deciduous to coniferous vege- tation in the canopy. In order to increase the sample size in individual habitats we combined closed and open canopy categories for each height and physiog- nomy grouping. Within any region, a given habitat was usually either closed or open, so this combination is not seen as contrary to the classification scheme. We identified 9 general habitats that comprised 99% of the area surveyed. Deciduous forest occurred in the southern three regions (Figure 2) and was char- acterized by Trembling Aspen {Populus tremuloides) with occasional White Birch {Betula papyrifera). Coniferous forests occurred in all six regions and were primarily Black Spruce (Picea mariana). Coniferous forests with understory averaged 45% understory cover and without understory averaged 15% cover. Understory, when present, was about equally divided between coniferous (young coniferous trees) and deciduous [Alder {Alnus spp.) and willow (Salix spp.)] vegetation. Coniferous forest with understory was generally an open canopy forest; all other forest habitats were closed canopy except for coniferous (lichen) forest on the Tyrrell Sea Beach. Coniferous scrub was composed primarily of Black Spruce and occasionally (north to the Wetiko Hills) Jack Pine (Pinus banksiana). Deciduous scrub was mainly alder and willow but occasionally Dwarf Birch {B. glandulosa). Both mixed forest and mixed scrub were composed of the same species as the respective pure deciduous or coniferous habitats. Typical plants in heath were Labrador Tea {Ledum groenlandicum). Ledum decumbens, Leatherleaf {Chamaedaphne calyculata), blueberry {Va
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