. The Canadian field-naturalist. 1975 Fuller et al.: Natural History of High Arctic Lemmings 227. Figure 3. Location of lemming burrows on a beach ridge about 625 m long. Numbers indicate the number of burrows in each square 5 X 5 m. Note the concentration of burrows along frost cracks and in the foreslope transition zone. Table 2—Percentages of lemming burrows located in different microhabitats in 1971 Microhabitats Burrows (%) Under rocks In ice wedges Raised beaches Ridge tops 18 Foreslope 56 Backslope 96 Mesic Meadows 67 Polygons Exposure: North South East West Top 54 Other sites 29 44 4 3
. The Canadian field-naturalist. 1975 Fuller et al.: Natural History of High Arctic Lemmings 227. Figure 3. Location of lemming burrows on a beach ridge about 625 m long. Numbers indicate the number of burrows in each square 5 X 5 m. Note the concentration of burrows along frost cracks and in the foreslope transition zone. Table 2—Percentages of lemming burrows located in different microhabitats in 1971 Microhabitats Burrows (%) Under rocks In ice wedges Raised beaches Ridge tops 18 Foreslope 56 Backslope 96 Mesic Meadows 67 Polygons Exposure: North South East West Top 54 Other sites 29 44 4 33 14 36 12 13 25 presence values and either numbers or bio- mass. Caloric values for vascular plants were mostly in the range to Kcal/g, but values for lichens were considerably lower. Food Habits In June identifiable remains of Carex mi- sandra were found at entrances to ventilation shafts. This is the only direct evidence we have concerning probable winter foods. Availabil- ity of C. misandra in relation to other flower- ing plants stands out clearly (Table 3), but its caloric value is only moderately high (Table 4). Opportunity to study autumn food selection was provided by a light fall of snow (4 cm). 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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