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Project ID: 09-3-01-20

Year: 2009

Date Started: 07/01/2009

Date Completed: 07/19/2012

Title: Influences of Large Herbivore Grazing on Succession, Fuels, and Fire Dynamics in a Changing Climate

Project Proposal Abstract: Landscape Fire Succession Models (LFSMs) are not able to account for influences that large grazing herbivores have on succession and fuel dynamics. Grazing is nevertheless a highly variable disturbance agent that does influence the development of wild land fuels, and thus by extension landscape fire regimes albeit to variable extent from one setting to another. The current state-of-art compromises LFSM projections, particularly those that are intended to articulate disturbance-agent interactions under climate stress. We propose to enable a spatially explicit ecosystem process model, Fire-BGCv2, to simulate influences of grazing regimes in an interactive context with episodic disturbance (fire suppression, fuels management) under different scenarios for climate warming. Our results will articulate interactions between grazing regimes and the regimes of the other agents, and clarify the extent to which variance in grazing should modify strategic LFSM projections for stand-level fuel dynamics (Type I responses), landscape fire regimes (Type II responses), and landscape vegetation mosaics (Type III responses). We will synthesize our results statistically to provide insights to the functional and practical significance of grazing, and to provide guidance for incorporating its effects into process-based and management-support models.

Principal Investigator: Martin Vavra

Agency/Organization: Forest Service

Branch or Dept: PNW-Forestry & Range Sciences Lab-LaGrande

Other Project Collaborators

Type	Name	Agency/Organization	Branch or Dept
Co-Principal Investigator	Rachel C Cook	National Council for Air & Stream Improvement Inc.	Forestry Program
Co-Principal Investigator	Michael J. Wisdom	Forest Service	PNW-Forestry & Range Sciences Lab-LaGrande
Federal Cooperator	Martin Vavra	Forest Service	PNW-Forestry & Range Sciences Lab-LaGrande
Federal Fiscal Representative	Tamatha S. Verhunc	Forest Service	PNW-Pacific Northwest Research Station
Technical Contact	Laura L. Burris	Forest Service	PNW-Pacific Northwest Research Station

Project Locations

Consortium

Northern Rockies

Northwest

Level	State	Agency	Unit
STATE	NM	MULTIPLE

Project Deliverables

Final Report ("Results presented in JFSP Final Reports may not have been peer-reviewed and should be interpreted as tentative until published in a peer-reviewed source.")

	ID	Type	Title

Supporting Documents

There are no supporting documents available for this project.

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