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Type: Journal Article
Author(s): Roseann V. Densmore; Glenn P. Juday; John C. Zasada
Publication Date: 1999

Site-preparation and regeneration methods for white spruce (Picea glauca) were investigated within the Bonanza Creek Experimental Forest near Fairbanks, Alaska, on 2 upland sites which had been burned in a wildfire (1983) and salvage logged (1985). One site supported white spruce, and a mixed stand of paper birch [Betula papyrifera] and P. glauca was present prior to the fire on the second site, but all trees were subsequently killed at both sites. Five site-preparation treatments were investigated (single disc trench, double disc trench, patch, blade and unscarified) conducted in August-September 1985, and 5 regeneration methods were also investigated (container-grown seedlings, unsheltered seed spots, scarified seed pots with cone or funnel shelters, broadcast sowing or natural seedfall). After 5 and 10 years, P. glauca regeneration did not differ between the 4 scarification methods but tended to be lower without scarification. The survival of container-grown planted seedlings stabilized after 3 years at 93% with scarification and at 76% without scarification. Broadcast sowing was also successful, with one or more seedlings on 80% of the scarified 6 m square subplots and on 60% of the unscarified subplots after 12 years. Natural regeneration after 12 years exceeded expectations, with seedlings on 50% of the 6 m square subplots 150 m from a seed source and on 28% of the subplots 230 m from a seed source. After 5 years, 37% of the scarified unsheltered seed spots and 52% of the scarified seed spots with cone shelters had one or more seedlings, but only 16% of the unscarified seed spots had seedlings, with and without funnel shelters. Growth rates for all seedlings were higher than on similar unburned sites. It is concluded that burning in interior Alaska had positive effects and it is suggested that planting seedlings, broadcast sowing and natural seedfall, alone or in combination, may be viable options for similar sites.

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Citation: Densmore, Roseann V.; Juday, Glenn P.; Zasada, John C. 1999. Regeneration alternatives for upland white spruce after burning and logging in interior Alaska. Canadian Journal of Forest Research 29(4):413-423.

Cataloging Information

Regions:
Keywords:
  • birch
  • fire
  • mechanical treatment
  • regeneration
  • salvage logging
  • seeding
  • seedling survival
  • succession
  • white spruce
Record Last Modified:
Record Maintained By: FRAMES Staff (https://www.frames.gov/contact)
FRAMES Record Number: 3901