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Project ID: 01B-3-3-16

Year: 2002

Date Started: 05/16/2002

Date Completed: 03/22/2006

Title: Effects of Season and Interval of Prescribed Burns in a Ponderosa Pine Ecosystem

Project Proposal Abstract: Prescribed burning is currently being used as a restoration and management tool to reduce large fuel loads and restore ecosystem function in western interior forests. Yet, effects of seasonality and burn interval on stand structure and endemic flora remain poorly understood and are a local knowledge gap significant to fire management plan development and implementation. We propose to superimpose two burn intervals on an existing season of burn study and monitor first order fire effects, insect and disease caused tree mortality, effects on understory vegetation, and fuel consumption. The existing seasonality of prescribed burn study was established in ponderosa pine type in the south end of the Blue Mountains in southeastern Oregon. Three treatments (no burn, fall 1997 burn, and spring 1998 burn) were assigned randomly to three 30- 60 acre experimental units in each of six replicates (stands). The study was initially installed to determine the attraction of potential insect vectors of the fungus that causes black stain root disease and the subsequent incidence of that disease following prescribed burning, but now also examines response of other elements such as understory vegetation, soil nutrients, bark beetle caused tree mortality and an evaluation of first order fire effects. The experimental design, established burn units and range of factors already being monitored, provide a unique opportunity to also examine burn interval. We propose to bisect each experimental unit and randomly select one subunit of each pair to be burned 5 years following the initial burn while the second subunit would be used to test a longer interval of burn. The season of burn for each subunit would remain the same as in the established study. This would result in two additional treatments (burn fall 1997 and 2002, and burn spring 1998 and 2003) on each of the six replicates. Results from this study would provide managers knowledge to evaluate two of the most basic variables of wildland fuel management, season and interval of burn.

Principal Investigator: Walter G. Thies

Agency/Organization: Forest Service

Branch or Dept: PNW-Forestry Sciences Lab-Corvallis


Other Project Collaborators

Type

Name

Agency/Organization

Branch or Dept

Co-Principal Investigator

Christine G. Niwa

Forest Service

PNW-Forestry Sciences Lab-Corvallis

Federal Cooperator

Becky K. Kerns

Forest Service

PNW-Forestry Sciences Lab-Corvallis

Manager/Coordinator

Mark Loewen

Forest Service

Malheur NF-Emigrant Creek Ranger District

Technical Contact

Robert E. Buckman

Forest Service

PSW-Pacific Southwest Research Station

Technical Contact

Nicholas L. Crookston

Forest Service

RMRS-Forestry Sciences Lab-Moscow

Technical Contact

Gene Mackey

Forest Service

Malheur NF-Emigrant Creek Ranger District

Technical Contact

Roger D. Ottmar

Forest Service

PNW-Seattle-Managing Natural Disturbances

Technical Contact

Elizabeth D. Reinhardt

Forest Service

RMRS-Fire Sciences Lab-Missoula

Technical Contact

Craig L. Schmitt

Forest Service

PNW-Forestry & Range Sciences Lab-LaGrande

Technical Contact

Russell H. Truman

Forest Service

Malheur NF-Emigrant Creek Ranger District


Project Locations

Consortium

Northern Rockies

Northwest

Northwest


There are no project locations identified for this project.

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
    54 Ph.D. Dissertation Prescribed Fire in a Ponderosa Pine Stand in the Blue Mountain, Oregon (M. Kangas)
view or print   1510 Government Publication A Field Guide to Predict Delayed Mortality of Fire Damaged Pondeosa Pine: Application and Validation of the Malheur Model
view or print   3074 Journal Article International Journal of Wildland Fire
view or print   2406 Journal Article Prescribed Fires are Not Created Equal: Fire Season and Severity Effects in Ponderosa Pine Forests of the Southern Blue Mountains
    2448 Journal Article Burn Management Guidelines for Bole Infesting Beetles and Root Diseases in Ponderosa Pine Stands
    2449 Journal Article Season and Severity of Prescribed Burn in Ponderosa Pine Forests: Implications for Understory Native and Exotic Plants
view or print   2452 Journal Article International Journal of Wildland Fire
    2453 Journal Article Short-Term Effects of Seasonal Prescribed Burning on the Ectomycorrhizal Fungal Community and Fine Root Biomass in Ponderosa Pine Stands in the Blue Mountains of Oregon
view or print   2860 Journal Article Ecoscience
    742 Poster Ponderosa Pine Understory Plant Community Patterns: Interactions of Prescribed Fire Severity and Season of Burn
    744 Dataset (including spatial) First Order Fire Effects From the First Burns (SOB Study 1997/98)
    745 Poster Effect of Season and Interval of Prescribed Burns in a Ponderosa Pine Ecosystem
    752 Dataset (including spatial) Woody Fuel Loading and Consumption
    823 Conference/Symposia/Workshop North American Forest Ecology Workshop

Supporting Documents

There are no supporting documents available for this project.

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