Document


Title

The effects of fire in black spruce ecosystems of Alaska and northern Canada
Document Type: Conference Paper
Author(s): L. A. Viereck
Editor(s): R. W. Wein; D. A. MacLean
Publication Year: 1983

Cataloging Information

Keyword(s):
  • adaptation
  • bogs
  • boreal forests
  • Canada
  • climax vegetation
  • coniferous forests
  • cover
  • fire adaptations (plants)
  • lichens
  • nutrients
  • Picea mariana
  • post fire recovery
  • soil temperature
  • succession
  • temperature
  • trees
  • tundra
Region(s):
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 28056
Tall Timbers Record Number: 1898
TTRS Location Status: Not in file
TTRS Call Number: QH 84.1 R64 1983
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.

Description

Fire in the black spruce ecosystem of northern Canada and Alaska is characterized by large and frequent fires that usually kill the overstorey trees and most, if not all, of the vegetation aboveground. Most species within the black spruce ecosystem show adaptations to fire, and black spruce stands are usually perpetuated by fire. Depending on the site, revegetation follows one of two primary patterns, although under some conditions there may be intervening stages of birch, aspen, or lodgepole pine. In general, the succession on dry sites develops as open lichen woodland with a nearly continuous cover of fruticose lichens. On moist sites, the development is that of a closed forest with a forest floor dominated by dense feathermosses and with a buijldup of an organic mat. The final or climax vegetation that develops depends on site and climate and may vary from treeless bogs through feathermoss types to open lichen woodlands. In some areas, balsam fir replaces the black spruce. Fire reduces the organic layer on the forest floor and causes higher soil temperatures, an increase in available nutrients, and an increase in productivity for period following the fire.

Citation:
Viereck, L. A. 1983. The effects of fire in black spruce ecosystems of Alaska and northern Canada, in RW Wein and DA MacLean eds., The role of fire in northern circumpolar ecosystems. New York, J. Wiley, SCOPE 18, p. 201-220.