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Comparing alternative management strategies of fire, grazing, and weed control using spatial modeling

Author

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  • Provencher, Louis
  • Forbis, Tara A.
  • Frid, Leonardo
  • Medlyn, Gary

Abstract

Modeling can be used to resolve controversies generated by differing opinions about the effects of livestock grazing, fire management, and herbicide application on western public lands. We used spatial simulations of 10 potential vegetation types to compare 6 management scenarios over 20 years in a 141,853ha landscape in eastern Nevada. Scenarios were compared by incrementally varying one factor at a time and were based on the Bureau of Land Management's (BLM's) potential restoration plans. The following factors were varied: managed fire, livestock grazing, mechanical and chemical treatment of vegetation, and restoration budgets. After 20 years the differences in vegetative composition between scenarios were small. BLM's level of funding was too low to improve ecological condition because the landscape was too degraded, however, current funding could maintain communities that retained native perennial understories. In general, the effects of livestock grazing were minor and undesirable compared to benefits gained from the use of mechanical and chemical methods followed by seeding. Mechanical methods and herbicide application in addition to current fire management had more desirable effects than without fire management.

Suggested Citation

  • Provencher, Louis & Forbis, Tara A. & Frid, Leonardo & Medlyn, Gary, 2007. "Comparing alternative management strategies of fire, grazing, and weed control using spatial modeling," Ecological Modelling, Elsevier, vol. 209(2), pages 249-263.
  • Handle: RePEc:eee:ecomod:v:209:y:2007:i:2:p:249-263
    DOI: 10.1016/j.ecolmodel.2007.06.030
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    Cited by:

    1. Price, Jessica & Silbernagel, Janet & Miller, Nicholas & Swaty, Randy & White, Mark & Nixon, Kristina, 2012. "Eliciting expert knowledge to inform landscape modeling of conservation scenarios," Ecological Modelling, Elsevier, vol. 229(C), pages 76-87.
    2. Costanza, Jennifer K. & Hulcr, Jiri & Koch, Frank H. & Earnhardt, Todd & McKerrow, Alexa J. & Dunn, Rob R. & Collazo, Jaime A., 2012. "Simulating the effects of the southern pine beetle on regional dynamics 60 years into the future," Ecological Modelling, Elsevier, vol. 244(C), pages 93-103.
    3. Bonneau, Mathieu & Johnson, Fred A. & Romagosa, Christina M., 2016. "Spatially explicit control of invasive species using a reaction–diffusion model," Ecological Modelling, Elsevier, vol. 337(C), pages 15-24.
    4. Bonneau, Mathieu & Martin, Julien & Peyrard, Nathalie & Rodgers, Leroy & Romagosa, Christina M. & Johnson, Fred A., 2019. "Optimal spatial allocation of control effort to manage invasives in the face of imperfect detection and misclassification," Ecological Modelling, Elsevier, vol. 392(C), pages 108-116.

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