Canadian Forest Service Publications

Vegetation establishment during 5 years following wildfire in northern British Columbia and southern Yukon Territory. 1990. Oswald, E.T.; Brown, B.N. Forestry Canada, Pacific Forestry Centre, Victoria, BC. Information Report BC-X-320. 52 p.

Year: 1990

Issued by: Pacific Forestry Centre

Catalog ID: 3054

Language: English

Series: Information Report (PFC - Victoria)

Availability: Order paper copy (free), PDF (download)

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Abstract

A study on revegetation following wildfires was conducted on four fires near the Yukon Territory - British Columbia border (60' N. Lat.). One wildfire occurred at Aishihik junction off the Alaska Highway in south-central Yukon in 1980; and three fires occurred near Watson Lake, Yukon Territory in 1982 - one in Yukon and two in British Columbia. This report covers the first 5 years of vegetation succession on 47 plots established in the areas burnt by these four fires. Coniferous tree seedlings or aspen juveniles appeared on all plots within 3 years, and varied in density from 700 to 80 100 juveniles/ha in the fifth year. Shrubs, mostly regenerating from root stalks and rhizomes, were frequently the tallest plants. Forbs did not appear to be major competitors as some populations would attain a peak coverage during the second or third year and then diminish, while others remained with low coverage. A moss, Ceratodon purpureus, provided the most coverage of all species on most sites. The stable communities on a site can apparently be predicted after about 5 years based on the species of trees, shrubs, and forbs present, but additional monitoring is required to confirm this and document the various seral stages.