Influence of fire regimes on lodgepole pine stand age and density across the Yellowstone National Park (USA) landscape
Document Type: Journal Article
Author(s): Tania L. Schoennagel; Monica G. Turner; Daniel M. Kashian; Andrew Fall
Publication Year: 2006

Cataloging Information

  • Abies lasiocarpa
  • age classes
  • catastrophic fires
  • coniferous forests
  • crown fires
  • Dendroctonus ponderosae
  • elevation
  • fire frequency
  • fire intensity
  • fire management
  • fire regimes
  • fire scar analysis
  • fire size
  • fire suppression
  • forest management
  • insects
  • landscape modeling
  • national parks
  • Picea engelmannii
  • pine
  • Pinus contorta
  • Pinus contorta var. latifolia
  • population density
  • post fire recovery
  • postfire regeneration
  • regeneration
  • seedlings
  • serotiny
  • stand density
  • statistical analysis
  • succession
  • succession
  • wildfires
  • Wyoming
  • Yellowstone National Park
  • Yellowstone National Park
Record Maintained By:
Record Last Modified: January 29, 2019
FRAMES Record Number: 48260
Tall Timbers Record Number: 24350
TTRS Location Status: In-file
TTRS Call Number: Fire File
TTRS Abstract Status: Fair use, Okay, 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.


A probabilistic spatial model was created based on empirical data to examine the influence of different fire regimes on stand structure of lodgepole pine (Pinus contorta var. latifolia) forests across a > 500,000-ha landscape in Yellowstone National Park, Wyoming, USA. We asked how variation in the frequency of large fire events affects (1) the mean and annual variability of age and tree density (defined by postfire sapling density and subsequent stand density) of lodgepole pine stands and (2) the spatial pattern of stand age and density across the landscape. The model incorporates spatial and temporal variation in fire and serotiny in predicting postfire sapling densities of lodgepole pine. Empirical self-thinning and in-filling curves alter initital postfire sapling densities over decades to centuries. In response to a six-fold increase in the probability of large fires (0.003 to 0.018 year-1), mean stand age declined from 291 to 121 years. Mean stand density did not increase appreciably at high elevations (1,029 to 1,249 stems ha-1) where serotiny was low and postfire sapling density was relatively low (1,252 to 2,203 stems ha-1). At low elevations, where prefire serotiny and postfire lodgepole pine density are high, mean stand densities increased from 2,807 to 7,664 stems ha-1. Spatially, the patterns of stand age became more simplified across the landscape, yet patterns of stand density became more complex. In response to more frequent stand replacing fires, very high annual variability in postfire sapling density is expected, with higher means and greater variation in stand density across lodgepole pine landscapes, especially in the few decades following large fires. © Springer Science+Business Media B.V. 2006. Abstract reproduced by permission.

Online Link(s):
Schoennagel, T., M. G. Turner, D. M. Kashian, and A. Fall. 2006. Influence of fire regimes on lodgepole pine stand age and density across the Yellowstone National Park (USA) landscape. Landscape Ecology, v. 21, no. 8, p. 1281-1296. 10.1007/s10980-006-0028-5.