Landscape heterogeneity following large fires: Insights from Yellowstone National Park, USA

Tania Schoennagel, Erica A.H. Smithwick, Monica G. Turner

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

We characterised the remarkable heterogeneity following the large, severe fires of 1988 in Yellowstone National Park (YNP), in the northern Rocky Mountains, Wyoming, USA, by focussing on spatial variation in post-fire structure, composition and ecosystem function at broad, meso, and fine scales. Ecological heterogeneity at multiple scales may enhance resilience to large, severe disturbances by providing structural, biological and functional redundancy. Post-fire heterogeneity in stand age, coarse wood abundance, microbial and understorey communities reflected interactions between existing pre-fire patterns and fire severity at different scales, suggesting that environmental context plays an important role in successional responses to large fires. In response to these post-fire patterns, heterogeneity in carbon (C) and nitrogen (N) storage, N mineralisation, decomposition, and productivity was also evident at multiple scales and may confer resiliency to large fires. For example, at broad scales, C storage in YNP appears resistant to changes in age-class structure associated with large stand-replacing fires. In summary, the YNP landscape is recovering rapidly from the 1988 fires through natural mechanisms, owing to the abundance and spatial heterogeneity of post-fire residuals, but other systems with fewer biotic legacies may be less resilient to such large, severe fires.

Original languageEnglish (US)
Pages (from-to)742-753
Number of pages12
JournalInternational Journal of Wildland Fire
Volume17
Issue number6
DOIs
StatePublished - Dec 26 2008

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national parks
national park
structure fires
fire severity
Rocky Mountain region
understory
age structure
spatial variation
ecosystem function
age class
mineralization
degradation
decomposition
ecosystems
carbon
disturbance
nitrogen
productivity
mountain

All Science Journal Classification (ASJC) codes

  • Forestry
  • Ecology

Cite this

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Landscape heterogeneity following large fires : Insights from Yellowstone National Park, USA. / Schoennagel, Tania; Smithwick, Erica A.H.; Turner, Monica G.

In: International Journal of Wildland Fire, Vol. 17, No. 6, 26.12.2008, p. 742-753.

Research output: Contribution to journalArticle

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