NDLI: Landscape heterogeneity and fire behavior: scale-dependent feedback between fire and grazing processes

Content Provider	Springer Nature Link
Author	Kerby, Jay D. Fuhlendorf, Samuel D. Engle, David M.
Copyright Year	2006
Abstract	Fire and grazing are ecological processes that frequently interact to modify landscape patterns of vegetation. There is empirical and theoretical evidence that response of herbivores to heterogeneity is scale-dependent however the relationship between fire and scale of heterogeneity is not well defined. We examined the relationship between fire behavior and spatial scale (i.e., patch grain) of fuel heterogeneity. We created four heterogeneous landscapes modeled after those created by a fire–grazing interaction that differed in grain size of fuel patches. Fire spread was simulated through each model landscape from 80 independent, randomly located ignition points. Burn area, burn shape complexity and the proportion of area burnt by different fire types (headfire, backfire and flankfire) were all affected by the grain of fuel patch. The area fires burned in heterogeneous landscapes interacted with the fuel load present in the patch where ignition occurred. Burn complexity was greater in landscapes with small patch grain than in landscapes with large patch grain. The proportion of each fire type (backfire, flankfire and headfire) was similar among all landscapes regardless of patch grain but the variance of burned area within each of the three fire types differed among treatments of patch grain. Our landscape fire simulation supports the supposition that feedbacks between landscape patterns and ecological processes are scale-dependent, in this case spatial scale of fuel loading altering fire spread through the landscape.
Starting Page	507
Ending Page	516
Page Count	10
File Format	PDF
ISSN	09212973
Journal	Landscape Ecology
Volume Number	22
Issue Number	4
e-ISSN	15729761
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-10-19
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Burning Herbivory Landscape pattern Modeling Shifting mosaics Simulation Vegetation biomass Plant Sciences Ecology Forestry Plant Ecology Landscape Ecology Forestry Management
Content Type	Text
Resource Type	Article
Subject	Geography, Planning and Development Ecology Nature and Landscape Conservation

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