. The Canadian field-naturalist. Natural history; Sciences naturelles. 2007 , \\\(j[ \ \, Hi Kki Ro. SiiAki'i, aricl Wathrs: Telkwa Caribou 159 2000 n 1 1 I O" 1800 1600 1400 1 i_ â «ii^4 + III! -L _L _L _L_ -.â _J 1â O^r 1200 0=0 z o 1â HI -1 UJ a UJ > 1000 800 600 111 â¢WO 001 071 272 283 291 177 610 801 CARIBOU COWS Figure 2. Barren cows" use of elevation all-vear. 1999. Telkwa Mountains. British Columbia. 2200. 001 071 272 283 291 610 801 CARIBOU COWS Figure 3. Barren cows" use of ele\ation at cal\ inn time. 1999. Telkwa Mountains. British Columbia. em ecotype (i
. The Canadian field-naturalist. Natural history; Sciences naturelles. 2007 , \\\(j[ \ \, Hi Kki Ro. SiiAki'i, aricl Wathrs: Telkwa Caribou 159 2000 n 1 1 I O" 1800 1600 1400 1 i_ â «ii^4 + III! -L _L _L _L_ -.â _J 1â O^r 1200 0=0 z o 1â HI -1 UJ a UJ > 1000 800 600 111 â¢WO 001 071 272 283 291 177 610 801 CARIBOU COWS Figure 2. Barren cows" use of elevation all-vear. 1999. Telkwa Mountains. British Columbia. 2200. 001 071 272 283 291 610 801 CARIBOU COWS Figure 3. Barren cows" use of ele\ation at cal\ inn time. 1999. Telkwa Mountains. British Columbia. em ecotype (including the Telkwa Caribou Herd) depends primarily on tenestrial lichens during winter and the mountain ecotype depends more on arboreal lichens. Arboreal lichens are most abundant in old for- est (Apps and Kinley 2000*), often on trees > 120 years old (Stevenson and Hatler 1985: Wood and Terr>' 1999). We found the Telkwa Caiibou Herd in forested habitat only one-third of the time. However. di\ isions betw een arboreal- and teirestrial lichen-dependent groups are not absolute. The temporal impacts of icing, deep snow, and other en\ ironmental conditions ma\' at times pre- vent Caiibou from obtaining terrestrial lichens, making areas of arboreal lichens provisionally more impor- tant (van Drimmelen 1986*: Edmonds 1988: Cichow- ski 1993). Forests 141-250 years old received the high- est use but the low est rank. This is the most abundant forest age class (Table 3). Wliereas the siriall number of Caribou during this studv did not use this age class. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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