. The Canadian field-naturalist. 60 The Canadian Field-Naturalist Vol. 86. Figure 9. The view above is that of a large, nearly flat area in the Curtis Lake vicinity (foreground) with slopes rising to rock fields (background). The dry slope might be considered a rock field variation in which gently sloping or nearly flat (Fig. 9) sand and gravel are admixed with a much lower frequency of boulders. These slopes and flats are dry on upper levels by Aug- ust (the camp was located at Curtis Lake dur- ing the period August 6-20 and at Repulse Bay for ten days thereafter). On the lower levels, Carex
. The Canadian field-naturalist. 60 The Canadian Field-Naturalist Vol. 86. Figure 9. The view above is that of a large, nearly flat area in the Curtis Lake vicinity (foreground) with slopes rising to rock fields (background). The dry slope might be considered a rock field variation in which gently sloping or nearly flat (Fig. 9) sand and gravel are admixed with a much lower frequency of boulders. These slopes and flats are dry on upper levels by Aug- ust (the camp was located at Curtis Lake dur- ing the period August 6-20 and at Repulse Bay for ten days thereafter). On the lower levels, Carex (principally C. Bigelowii) and Eriophor- um spp. are of high frequency. Salix reticulata was also found here, the only site that this species was seen to occupy in the Curtis Lake area. There appears to be a rather large variation in water retention on dry slopes due to drain- age patterns and topographic position. Tran- sect #9-57 is on dry sand, probably dry most of the time excepting in very early spring. Transect #9-58 is relatively dry by August, but would likely be subjected to sheet drainage during most of the early summer. The slope has a terraced appearance because of polygons which tend to have horizontal surfaces. A relatively large proportion (ca. 10-15%) of the terrain in the. Curtis Lake study area is given over to this topographic type, a propor- tion greater than in any other study area. In many respects this constitutes a unique land- form and presents a correspondingly unique plant community, although similar in many respects to dry slopes of other areas. A noted difference, however, was the absence of Empe- trum in the Curtis Lake area on this topogra- phic site. The Cetraria-Cladonia community is repre- sented at Curtis Lake, as at Snow Bunting: one small patch was found, not sufficiently large to furnish transect data. None were seen else- where over a relatively large Please note that these images are extracted from scanned page images that may have
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