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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 view or print

("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

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