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

@article{Thaxton2006SmallscaleFV,
  title={Small-scale fuel variation alters fire intensity and shrub abundance in a pine savanna.},
  author={Jarrod M. Thaxton and William J. Platt},
  journal={Ecology},
  year={2006},
  volume={87 5},
  pages={
          1331-7
        }
}
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… 

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References

SHOWING 1-10 OF 24 REFERENCES

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.

FIRE EFFECTS ON RESPROUTING OF SHRUBS IN HEADWATERS OF SOUTHEASTERN LONGLEAF PINE SAVANNAS

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 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

High temperature of forest fires under pines as a selective advantage over oaks

In many temperate ecosystems succession from pine forest to hardwoods is interrupted by fire, resulting in a fire climax dominated by pines1–3. As natural selection operates through both processes of