Defining pyromes and global syndromes of fire regimes
Document Type: Journal Article
Author(s): Sally Archibald; Caroline E. R. Lehmann; Jose L. Gomez-Dans; Ross A. Bradstock
Publication Year: 2013

Cataloging Information

  • climate change
  • energy constraints
  • fire frequency
  • fire intensity
  • fire management
  • fire regimes
  • fire return interval
  • fire size
  • fire suppression
  • fire weather
  • fire-climate interactions
  • forest management
  • global fire activity
  • invasive species
  • vegetation
  • vegetation surveys
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 14860
Tall Timbers Record Number: 28304
TTRS Location Status: Not in file
TTRS Call Number: Available via ILL only
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.


Fire is a ubiquitous component of the Earth system that is poorly understood. To date, a global-scale understanding of fire is largely limited to the annual extent of burning as detected by satellites. This is problematic because fire is multidimensional, and focus on a single metric belies its complexity and importance within the Earth system. To address this, we identified five key characteristics of fire regimes-size, frequency, intensity, season, and extent-and combined new and existing global datasets to represent each. We assessed how these global fire regime characteristics are related to patterns of climate, vegetation (biomes), and human activity. Cross-correlations demonstrate that only certain combinations of fire characteristics are possible, reflecting fundamental constraints in the types of fire regimes that can exist. A Bayesian clustering algorithm identified five global syndromes of fire regimes, or pyromes. Four pyromes represent distinctions between crown, litter, and grass-fueled fires, and the relationship of these to biomes and climate are not deterministic. Pyromes were partially discriminated on the basis of available moisture and rainfall seasonality. Human impacts also affected pyromes and are globally apparent as the driver of a fifth and unique pyrome that represents human-engineered modifications to fire characteristics. Differing biomes and climates may be represented within the same pyrome, implying that pathways of change in future fire regimes in response to changes in climate and human activity may be difficult to predict.

Online Link(s):
Archibald, Sally; Gomez-Dans, Jose L.; Bradstock, Ross A. 2013. Defining pyromes and global syndromes of fire regimes. Proceedings of the National Academy of Science110(16):6442-6447.