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Mixed-severity fire fosters heterogeneous spatial patterns of conifer regeneration in a dry conifer forestAuthor(s): Sparkle L. Malone; Paula J. Fornwalt; Mike A. Battaglia; Marin E. Chambers; Jose M. Iniguez; Carolyn H. Sieg
Source: Forests. 9: 45.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
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DescriptionWe examined spatial patterns of post-fire regenerating conifers in a Colorado, USA, dry conifer forest 11-12 years following the reintroduction of mixed-severity fire. We mapped and measured all post-fire regenerating conifers, as well as all other post-fire regenerating trees and all residual (i.e., surviving) trees, in three 4-ha plots following the 2002 Hayman Fire. Residual tree density ranged from 167 to 197 trees ha-1 (TPH), and these trees were clustered at distances up to 30 m. Post-fire regenerating conifers, which ranged in density from 241 to 1036 TPH, were also clustered at distances up to at least 30 m. Moreover, residual tree locations drove post-fire regenerating conifer locations, with the two showing a pattern of repulsion. Topography and post-fire sprouting tree species locations further drove post-fire conifer regeneration locations. These results provide a foundation for anticipating how the reintroduction of mixed-severity fire may affect long-term forest structure, and also yield insights into how historical mixed-severity fire may have regulated the spatially heterogeneous conditions commonly described for pre-settlement dry conifer forests of Colorado and elsewhere.
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CitationMalone, Sparkle L.; Fornwalt, Paula J.; Battaglia, Mike A.; Chambers, Marin E.; Iniguez, Jose M.; Sieg, Carolyn H. 2018. Mixed-severity fire fosters heterogeneous spatial patterns of conifer regeneration in a dry conifer forest. Forests. 9: 45.
Keywordsforest recovery, wildfire effects, stem maps, resilient ecosystems, Pike National Forest, Hayman Fire
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