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View fact sheet.
In the future, areas where sagebrush will expand, the leading edge, are predicted to be on the northern edge of its current range—predominately northeast Montana. Conversely, areas where the current sagebrush distribution is predicted to contract, the trailing edge, reside at the southern edge of the current distribution, including the Great Basin. Both of these projected shifts are most likely in response to predicted increased minimum temperature and changes in precipitation amount and seasonality. Climate and hydrological factors have the potential to strongly affect sagebrush regeneration because sagebrush does not reproduce asexually and depends solely on germination rates and seedling survival. By exploring these relationships using an ecohydrologic simulation model, we found that sagebrush germination is not expected to be limiting at either the leading or trailing edge. However, seedling survival was expected to decrease at the trailing edge while increasing at the leading edge.
Discussion Recording.
An informal discussion on current fuel break knowledge from science and management. Brief presentations on the latest in fuel break science and practice, and discussions around your fuel break questions.
Presenters: Doug Shinneman, Research Fire Ecologist with USGS, and Lance Okeson, Fire Management Officer with Boise District BLM
This is the fifth of six webinars in our Fuel Breaks in Sagebrush Country: A Multidisciplinary Webinar Series and Discussion.
To learn about other webinars in the series, see the webinar series webpage.
This webinar features:
A fuels treatment success story in the Pine Nut Mountains of Nevada – Keith Barker, BLM
Successes and challenges with a suite of fuel break projects – Lance Okeson, BLM
View article.
Our study found that fire perimeter source and fireline buffer width had the largest impact on quantified fireline effectiveness metrics. Misclassification of firelines produced dramatic erroneous results which artificially increased the effectiveness and decreased suppression effort. High-severity fires were shown to be less effective across all fireline types and required higher suppression than most low- and moderate-severity fires.
View webinar recording.
This presentation will focus on findings from JFSP-supported graduate research on post-fire conifer establishment following recent wildfires in eastern Oregon’s Blue Mountains. Given shifting climate and wildfire regimes, managers and researchers seek information on forest resilience and recovery trajectories. Understanding establishment and growth rates post-fire is pertinent both to fuels management planning, in cases of overabundant regeneration, as well as to decisions surrounding replanting for sites with limited post-fire regeneration. The presentation will summarize current knowledge on the relative influence of site-level versus climatic factors affecting regeneration in western North America, and present data from the Blue Mountains ecoregion.
The webinar informs participants about the new LANDFIRE Remap products, what has changed from previous product offerings, and what remains the same or has been updated. It offers application examples taken from the SW region, and will save time to answer questions and listen to comments at the webinar’s conclusion. The presentation is directed those who are or might be considering using LANDFIRE products to inform fire and vegetation management decisions, e.g. researchers, land and project managers, fire and fuel professionals, GIS specialists, scientists, and students.
Kori Blankenship, Fire Ecologist and Jim Smith, Program Lead, of The Nature Conservancy’s LANDFIRE Team, present.
The fire spread rate within WUI communities is determined for nine wildfires that were ranked among the most destructive wildfires in North America. An improved quasi-empirical model that considers radiation and fire spotting as modes of fire spread inside a community is proposed. The new model is validated using the documented spread rates during the 2007 Witch and Guejito fires and the 2017 Tubbs fire. The proposed model is computationally efficient and can be used to quantify fire spread rate and the number of affected structures inside a community during a wildfire event.
View video.
It’s been a weird year so far. The west experienced an exceptionally cool and moist spring, especially in the southern extent of the region. Combined with above average snowpack, fuels stayed moist, and the fire season has had a very slow start. In fact, June saw the lowest area burned since 2000, but despite the slow start over 400 locations in the conterminous US have experienced record temperatures. Moreover, we have seen several weeks of anomalous heat waves, especially in the southwestern US. Yet still the fire season is slower than normal, but fuels are drying out fast.
In this 22-minute webcast, Research Ecologist Dr. Matt Reeves analyzes rangeland fuel conditions across the western US by evaluating the main factors of fuel amount and type, proximity to larger diameter fuel, drought conditions, and level of curing leading to senescent grasses in our simple but transparent hotspot algorithm. All 2022 recordings are located on the Reading the Tea Leaves page.
Webinar recording.
Introduction – Vicky Erickson
An updated approach to generalized seed transfer strategies – Elizabeth Milano
Managing for genetic resistance to white pine blister rust – Anna Schoettle
Restoring ash: Breeding for resistance to the emerald ash borer – Jennifer Koch
Facilitator: Cherie Fisher
View article.
This study approach revealed interactive, ecological relationships such as novel soil-surface effects on first year establishment of sagebrush across the burned landscape, and identified ‘‘hot spots’’ for recovery. The approach could be expanded across sites and years to provide the information needed to explain past seeding successes or failures, and in designing treatments at the landscape scale.