. The Canadian field-naturalist. . t ,M3J (0 O (0 (0 O) (0 TO-DO (0 ^ b « S 0 E 3 D) 0) (0 O (0 (0 O) (0 ro "o o 0) E 3 o (0 O ^ (0 X) 0) -' O) o re 5- c ra "D — ?*• o £ (0 0) ^ (0 ^ 0(^g o E 3 D) 0) Summer Early-Winter Mid-Winter Late-Winter Figure 2. Summer, early-, mid-, and late-winter diets of Arctic Hares on Banks Island determined from analyses of plant fragments found in stomach contents and faecal pellets. In 1994, numbers of Peary Caribou appeared to have stabilized at ca. 800 while Muskoxen numbers had increased to ca. 65 000 non-calves (Larter and Nagy 1997; Nagy et al. 1
. The Canadian field-naturalist. . t ,M3J (0 O (0 (0 O) (0 TO-DO (0 ^ b « S 0 E 3 D) 0) (0 O (0 (0 O) (0 ro "o o 0) E 3 o (0 O ^ (0 X) 0) -' O) o re 5- c ra "D — ?*• o £ (0 0) ^ (0 ^ 0(^g o E 3 D) 0) Summer Early-Winter Mid-Winter Late-Winter Figure 2. Summer, early-, mid-, and late-winter diets of Arctic Hares on Banks Island determined from analyses of plant fragments found in stomach contents and faecal pellets. In 1994, numbers of Peary Caribou appeared to have stabilized at ca. 800 while Muskoxen numbers had increased to ca. 65 000 non-calves (Larter and Nagy 1997; Nagy et al. 1996). Local and scientific knowledge indicate that numbers of Arctic Hares show periodic noncyclical highs. Based upon the Inuvialuit Harvest Study Program Arctic Hares are currently high (1996-1998) and were high from 1986-1988 and from 1992-1994. Lemming numbers have shown a four-year cyclical pattern with high densities during the summers of 1993 and 1997 (Larter 1998*). Methods During field work conducted periodically on south central Banks Island (72° 12' N, 123° 30' W) from July 1993 through April 1997, 17 Arctic Hares were shot: 3 during summer (July and August), 3 during early winter (November), 8 during mid-winter (February), and 3 during late winter (April). Whole stomachs and faecal pellets, collected from rectal/colon area, were collected from each animal and kept frozen until transported to the laboratory in Inuvik. Stomach contents were removed. Stomach contents and faecal pellets were air dried for 48 h to remove excess water, oven dried at 60°C for 48 h and then ground ( mm screen). A mixed <2 g subsample was analysed micro-histologically (Sparkes and Malechek 1968), following the method outlined in Hansen et al. (1976*) at the Composition Analysis Laboratory, Ft. Collins, Colorado. Microscope slides prepared from each sample were examined within 100 fields of view to differentiate plant tissues. Data are presented as mean percent rel- ative densi
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