2020 ESA Annual Meeting (August 3 - 6)

OOS 41 - Post-Fire Management in Southwestern Conifer Forests

Tuesday, August 4, 2020: 3:30 PM-4:00 PM
Organizer:
Jens Stevens
Co-organizer:
Collin Haffey
Moderator:
Collin Haffey
Increasing incidence of large severe wildfires in conifer forests across the western United States, and particularly in the Southwest, is altering the landscape template for forest management. While management of extant forests continues to be a priority for land managers seeking to restore heterogeneous forest structure and reduce fuels, an increasing fraction of southwestern conifer forests is represented by severely-burned landscapes where most to all trees in a given area have been killed. These complex landscapes present unique social and ecological challenges: severely-burned landscapes represent hazards to water resources, often contain heavy fuels which can influence future fire dynamics, and contain a multitude of challenges for successful conifer regeneration. Conventional techniques for fuel management and tree planting in burned landscapes sometimes include salvage logging, competing vegetation removal, and high-density planting. These are all resource-intensive activities that are being made more difficult by the increasing scale of severely-burned landscapes, increasing frequency of re-burning, and a warming climate which may limit opportunities for successful tree establishment. In this session we will highlight recent and ongoing research to address management challenges in severely-burned areas within conifer forests of the southwest. We begin with a description of the social and ecological problems created by severely-burned landscapes. We then discuss how burned landscapes are likely to respond to subsequent fire, and how re-burning may impact both the fuel matrix and the successful regeneration of a new cohort of adult trees. Both reburn and regeneration dynamics are likely to interact with the distribution of live and dead trees and other fuels across the landscape, and so we consider how landscape context should inform management decisions regarding whether to plant or otherwise direct vegetation development in burned areas. Two subsequent talks will detail the tree planting process, first regarding new approaches to reforestation that include spatial distributions of planting and facilitation vs competition from competing vegetation, and second regarding the operational side of seedling production and outplanting and how various pinch points can impede managers’ ability to meet the increasing scale required for post-fire restoration. Finally, we synthesize the multiple facets of this session with a new burned area decision making framework that emphasizes a diverse portfolio of management options that strategically incorporates landscape variability and natural processes to maximize the potential for successful reforestation of at least a portion of southwestern conifer forests.
3:45 PM
Managing for subsequent fires: Considering how re-burns will impact forest regeneration
Andrea Thode, Northern Arizona University; Larissa Yocom, Utah State University; José M. Iniguez, USDA FS; Rachel Loehman, Alaska Science Center
4:00 PM
Reforestation or reorganization? How landscape context and climate can inform post-fire decision-making
Jonathan Coop, Western Colorado University; Collin Haffey, The Nature Conservancy; Jens Stevens, US Geological Survey; Kyle C. Rodman, University of Wisconsin
4:15 PM
Where and how we plant trees: Challenges to successful reforestation and emerging strategies on how to achieve it
Marin Chambers, Colorado State University; Kyle C. Rodman, University of Wisconsin; Teresa B. Chapman, University of Colorado-Boulder