Document


Title

Fire recurrence and vegetation in the lichen woodlands of the Northwest Territories, Canada
Document Type: Conference Proceedings
Author(s): Edward A. Johnson
Editor(s): Marvin A. Stokes; John H. Dieterich
Publication Year: 1980

Cataloging Information

Keyword(s):
  • boreal forests
  • Canada
  • climate change
  • community ecology
  • disturbance
  • ecotones
  • fire adaptations
  • fire frequency
  • fire intensity
  • fire return interval
  • lichen woodlands
  • lichens
  • mosaic
  • Northwest Territories
  • pine forests
  • plant species diversity
  • population density
  • succession
Region(s):
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 2572
Tall Timbers Record Number: 1556
TTRS Location Status: In-file
TTRS Call Number: A13.88:RM-81
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

Evidence from 10 years of fire records and 300 years of tree ages and fire scars indicate that forest fires in a large area east of Great Slave Lake, N.W.T. are recurrent over a short time interval (<125 years) and related to large scale air mass climate patterns and terrain roughness. Reconstruction of fire recurrence for 3700 years from paleoecological evidence of treeline position suggests two levels of environmental dynamics. The shorter term change is related to periods of stationary fire frequency and the longer term change is related primarily to climatic change and site conversion. These two levels of dynamics are also observed in the gradient analysis of the contemporary vegetation. The gradients are fire frequency-intensity and topographic-nutrient-energy budget.

Online Link(s):
Link to this document (14.7 MB; pdf)
Citation:
Johnson, Edward A. 1980. Fire recurrence and vegetation in the lichen woodlands of the Northwest Territories, Canada. Pages 110-114. In: Stokes, Marvin A.; Dieterich, John H. (editors). Proceedings of the Fire History Workshop: October 20-24, 1980, Tucson, Arizona. General Technical Report RM-GTR-81. Ft. Collins, CO: US Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station.