Ecology of meadow communities in southeastern British Columbia
Date
1985
Authors
Fraser, David Frank
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Abstract
Using a Braun Blanquet Table Sort Method, 14 meadow communities are described based on 8 differential species groups derived from 180 species found in 178 releves completed on Harmer and Natal Ridges in the Front Range of the southern British Columbia Rockies. Parent material and moisture regime appear to be important correlates with community type.
Grazing by elk (Cervus elaphus) has altered species composition in several communities. Exclosed areas relieved of grazing pressure showed significant increases in fruit production of Amelanchier alnifolia, conifer seedling establishment, total woody biomass, and litter accumulation. Three herbaceous species, Gentiana amarella, Medicago lupulina, and Chrysanthemum leucanthemum showed higher cover, and surface soil pH was higher in grazed areas. Results indicate that forest succession is slowed or reversed in some low elevation winter range areas by ungulate grazing.
Implication for management of wildlife, reclamation of mine spoils, and species rare to British Columbia are considered.