. The Canadian field-naturalist. K. ^* /f-^>-*t:4Sil§J •' ^ Figure 2. Bob Hill Prairie, a typical area of fescue grassland at Riding The Study Area Riding Mountain National Park, an area of 1,148 square miles, occupies a plateau reaching 2400 feet in elevation, averaging about 2000 feet, located about 140 airline miles of Winnipeg. The northern and eastern slopes rise abruptly from the Manitoba plains, the southern slope rising more gradually. To the west the plateau merges almost imperceptibly with the general level of the Saskatchewan plain. The plateau itself varies from
. The Canadian field-naturalist. K. ^* /f-^>-*t:4Sil§J •' ^ Figure 2. Bob Hill Prairie, a typical area of fescue grassland at Riding The Study Area Riding Mountain National Park, an area of 1,148 square miles, occupies a plateau reaching 2400 feet in elevation, averaging about 2000 feet, located about 140 airline miles of Winnipeg. The northern and eastern slopes rise abruptly from the Manitoba plains, the southern slope rising more gradually. To the west the plateau merges almost imperceptibly with the general level of the Saskatchewan plain. The plateau itself varies from gently undulating to distinctly rugged with many hills and ridges. The northern and eastern parts of the Park are heavily forested with both mixed and pure stands of white spruce {Ficea glauca), jackpine {Finns bank- siana), aspen (Fopiilus tremiilaides), and balsam poplar {Fopiiliis balsamifera) — essentially a boreal association on grey-wooded soils. Black spruce {Ficea mariana) and tamarack {Larix laricina) are common in areas of poor drainage, often in association with dwarf birch {Betiila glandiilosa) and Labrador tea {Ledum groenlandicum). The southwestern portion of the Park supports a parkland type of cover developed on black soils, the characteristic tree being aspen. All of the fescue prairie is located in this area. Shrub growth throughout the Park is both dense and diverse. Willows {Salix spp.) form dense stands in wet open areas, while hazel {Corylus corniita) is the dominant shrub of the aspen understory. Other abundant shrubs on upland sites are rose {Rosa acicidaris), pincherry {Frumis pensylvanica), choke- cherry (P. virginiana), serviceberry {Amelanchier alnijolia), red-osier dogwood {Cornus stoloiiifera) and snowberry {Symphoricarpos albiis).. 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
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