Small-scale fuel variation alters fire intensity and shrub abundance in a pine savanna.

  title={Small-scale fuel variation alters fire intensity and shrub abundance in a pine savanna.},
  author={Jarrod M. Thaxton and William J. Platt},
  volume={87 5},
Small-scale variation in fire intensity and effects may be an important source of environmental heterogeneity in frequently burned plant communities. We hypothesized that variation in fire intensity resulting from local differences in fuel loads produces heterogeneity in pine savanna ground cover by altering shrub abundance. To test this hypothesis, we experimentally manipulated prefire fuel loads to mimic naturally occurring fuel-load heterogeneity associated with branch falls, needle fall… 
Small-Scale Variation in Fuel Loads Differentially Affects Two Co-Dominant Bunchgrasses in a Species-Rich Pine Savanna
This work quantified how fire in locally varying fuel loads influenced dynamics of dominant C4 bunchgrasses in a species-rich pine savanna in southeastern Louisiana, USA and speculated that locally increased fuel loading may be important in pine savannas for creating colonization sites because where fuels are light or moderate, dominant bunchgrass persist through fires.
Overstory-derived surface fuels mediate plant species diversity in frequently burned longleaf pine forests
Frequently burned low-latitude coniferous forests maintain a high-diversity understory. Longleaf pine (Pinus palustris Mill.) forests and woodlands have exceptionally high diversity at fine scales
The wildland fuel cell concept: an approach to characterize fine-scale variation in fuels and fire in frequently burned longleaf pine forests
In ecosystems with frequent surface fire regimes, fire and fuel heterogeneity has been largely overlooked owing to the lack of unburned patches and the difficulty in measuring fire behavior at fine
Relating fuel loads to overstorey structure and composition in a fire-excluded Sierra Nevada mixed conifer forest.
Although knowledge of surface fuel loads is critical for evaluating potential fire behaviour and effects, their inherent variability makes these difficult to quantify. Several studies relate fuel
Decades-old silvicultural treatments influence surface wildfire severity and post-fire nitrogen availability in a ponderosa pine forest
Wildfire severity and subsequent ecological effects may be influenced by prior land management, via modification of forest structure and lingering changes in fuels. In 2002, the Hayman wildfire
Longleaf pine proximity effects on air temperatures and hardwood top-kill from prescribed fire
BackgroundRegulation of the dominance of resprouting understory hardwoods is a common objective for prescribed fire in open-canopy longleaf pine (Pinus palustris Mill.) woodland of the southeastern
Spatial variability of surface fuels in treated and untreated ponderosa pine forests of the southern Rocky Mountains
There is growing consensus that spatial variability in fuel loading at scales down to 0.5 m may govern fire behaviour and effects. However, there remains a lack of understanding of how fuels vary
Fuel composition influences fire characteristics and understorey hardwoods in pine savanna
Summary Fuels in the groundcover of frequently burned south-eastern pine savannas include shed leaves of trees. Flammable needles of longleaf pine (Pinus palustris) potentially increase maximum


Effects of fire intensity on groundcover shrubs in a frequently burned longleaf pine savanna
Variation in fire intensity may affect the structure and composition of frequently burned plant communities. I hypothesize that small-scale variation in fuel loads affects fire intensity within
Fire Frequency Effects on Longleaf Pine ( Pinus palustris P. Miller) Vegetation in South Carolina and Northeast Florida, USA
Results of two long-term prescribed fire studies support the hypothesis that burning as frequently as fuels permit is optimal for maintaining the largest number of native ground-layer plant species, however, frre frequency effects on species composition differed between the two studies.
Woody plants in fire-frequented ecosystems commonly resprout from underground organs after fires. Responses to variation in characteristics of fire regimes may be a function of plant physiological
Effects of Differences in Prescribed Fire Regimes on Patchiness and Intensity of Fires in Subtropical Savannas of Everglades National Park, Florida
Abstract We investigated effects of fire frequency, seasonal timing, and plant community on patchiness and intensity of prescribed fires in subtropical savannas in the Long Pine Key region of
Composition and species diversity of pine-wiregrass savannas of the Green Swamp, North Carolina
Fire-maintained, species-rich pine-wiregrass savannas in the Green Swamp, North Carolina were sampled over their natural range of environmental conditions and fire frequencies. Species composition,
Substrate heterogeneity and number of plant species in Everglades savannas (Florida, USA)
Substantial data indicate that substrate het-erogeneity, measured as variation in elevations, is not likely to be involved in the co-occurrence of many species within small areas of these savannas, but may influence numbers of species at larger scales of observation.
Pine savanna overstorey influences on ground-cover biodiversity
Abstract Question: Does the overstorey of pine savannas influence plant species biodiversity in the ground cover? Location: Camp Whispering Pines (30°41′ N; 90°29′ W), eastern Louisiana (USA).
Fire, microhabitat, and their interactions affect Florida scrub ecosystems and their plant species. Concepts of vegetation change in the Florida upland landscape have followed successional theory,
Fire temperature heterogeneity in contrasting fire prone habitats: Kansas tallgrass prairie and Florida sandhill
GIBSON, D. J. (Department of Biology, University of West Florida, Pensacola, FL 32514), D. C. HARTNETT AND G. L. S. MERRILL (Division of Biology, Ackert Hall, Kansas State University, Manhattan, KS
Fire research for conservation management in tropical savannas: Introducing the Kapalga fire experiment
Fire is a dominant feature of tropical savannas throughout the world, and provides a unique opportunity for habitat management at the landscape scale. We provide the background and methodology for a