Document


Title

Response of understory plant community of boreal mixedwood stands to fire, logging, and spruce budworm outbreak
Document Type: Journal
Author(s): K. J. Kemball ; G. G. Wang ; Q. Dang
Publication Year: 2005

Cataloging Information

Keyword(s):
  • boreal forests
  • Canada
  • Choristoneura fumiferana
  • coniferous forests
  • Corylus cornuta
  • crown fires
  • disturbance
  • disturbance
  • diversity
  • fire management
  • fire size
  • forest management
  • logging
  • management
  • Manitoba
  • mixedwood
  • plant communities
  • plant diseases
  • population density
  • Populus tremuloides
  • quaking aspen
  • shrubs
  • shrubs
  • species diversity (plants)
  • spruce budworm
  • statistical analysis
  • succession
  • succession
  • understory vegetation
  • wildfires
Region(s):
  • International
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 52257
Tall Timbers Record Number: 29329
TTRS Location Status: Not in file
TTRS Call Number: Available
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

The understory plant community of 63 boreal mixedwood stands in southeastern Manitoba, Canada, that were disturbed in the 1980s (21 by crown fire, 20 by logging, and 22 by severe spruce budworm (Choristoneura fumiferana) outbreak) were investigated. Understory plant communities that developed after fire, logging, and spruce budworm outbreak shared a large number of species (47 out of 81 identified). However, compared with fire and spruce budworm outbreak, logging promoted the rapid expansion of tall shrubs (52.7% vs. 17.2% and 29.75% coverage, respectively), particularly Corylus cornuta. Significant differences were also found between disturbance types when species coverage was compared on the basis of shade tolerance and regeneration strategy. Lower shrub coverage following fire is attributed to greater disturbance severity on the forest floor, affecting in situ propagules and competition from dense trembling aspen (Populus tremuloides Michx.) regeneration. Lower shrub coverage following spruce budworm outbreak is attributed to slow opening of the canopy coupled with retention of a residual canopy of nonhost trees. Uniformly high shrub coverage following logging resulted in less heterogeneity and lower species diversity at both the stand and the disturbance level compared with natural disturbances. High shrub coverage may negatively impact conifer recruitment and have significant implications for future stand composition and productivity. Consideration of a natural insect outbreak model, rather than fire, for management of boreal mixedwood stands is recommended, particularly if stands are to be left to regenerate naturally. © 2006 NRC Canada.

Citation:
Kemball, K. J., G. G. Wang, and Q.-L. Dang. 2005. Response of understory plant community of boreal mixedwood stands to fire, logging, and spruce budworm outbreak. Canadian Journal of Botany, v. 83, no. 12, p. 1550-1560. 10.1139/b05-134.