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This purpose of this article is to outline how weather and climate information can be used to facilitate Ecologically-Based Invasive Plant Management (EBIPM) and adaptive management planning. The discussion follows the eight steps to adaptive management outlined in EBIPM planning guides.
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This study evaluated restoration efforts applied to grasslands dominated by an invasive plant, sulfur cinquefoil, 6 yr after treatments. Of the five herbicides evaluated, picloram continued to provide the best control of sulfur cinquefoil over 6 yr. Plots with picloram applied in the fall had greater native forb cover. Seeding resulted in a 20% decrease in exotic grass cover. Successful establishment of native perennial grasses was not apparent until 6 yr after seeding. Our study found integrating herbicide application and the addition of native grass seed to be an effective grassland restoration strategy, at least in the case where livestock are excluded.
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This Nature article discusses large, severe fires, climate change, insect outbreaks, and recovery of western forests with USGS scientist, Craig Allen and WERC scientist, Nate Stephenson. on the conversion of forest ecosystems due to climate change and altered fire regimes.
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In this study, seeds from 106 collection locations from the southwestern United States were established in common gardens and four phenological traits, six production traits, and eight morphology traits were measured in 2007 and 2008. Analyses of variance revealed that all basic garden traits differed among source locations (P < 0.01), indicating widespread genetic variation. Using regression models between traits and climate, a map with 12 seed zones was developed representing much of the southwestern United States. The seed zone map is recommended to guide and broaden germplasm collection and utilization for Indian ricegrass restoration.
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The results of this study suggest that mowing, as a standalone
treatment, does not restore the herbaceous understory in degraded Wyoming big sagebrush plant communities. Mowing should not be applied in Wyoming big sagebrush plant communities with degraded understories without additional treatments to limit exotic annuals and promote perennial herbaceous vegetation.
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This study sampled cheatgrass endophytes and found many fire-associated fungi, including Morchella in three western states (New Mexico, Idaho, and Washington). In greenhouse experiments, a New Mexico isolate of Morchella increased both the biomass and fecundity of its local cheatgrass population, thus simultaneously increasing both the probability of fire and survival of that event, via more fuel and a greater, belowground seed bank, respectively.
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This paper reviews the nature and characteristics of bark beetle-altered fuel complexes in the conifer forests of the Interior West and the challenges of understanding the effects on extreme fire behavior, including the initiation and spread of crown fires. We also discuss how emerging fire management plans in the U.S. have begun to integrate wildfire management and other forest health objectives with the specific goal of achieving biodiversity and ecosystem resiliency while simultaneously reducing the existence of hazardous fuel complexes.
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This review suggests that when applied, both prescribed fire and its mechanical surrogates are generally successful in meeting short-term
fuel-reduction objectives and in changing stand structure and fuel beds such that treated stands are more resistant and resilient to high-intensity wildfire.
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This study reviewed and synthesized the published literature on modifications to fuels and fire characteristics following beetle-caused tree mortality. The literature agreed about responses in many conditions, including fuels measurements and changes in stands with longer times since outbreak. Disagreement or gaps in knowledge existed in several conditions, particularly in early post outbreak phases and crown fire behavior responses.
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This paper reports the effects of the most common forest fuel reduction treatments on carbon pools composed of live and dead biomass as well as potential wildfire emissions from six different sites in four western U.S. states. Research suggests most of the benefits of increased fire resistance can be achieved with relatively small reductions in current carbon stocks. Retaining or growing larger trees also reduced the vulnerability of carbon loss from wildfire. In addition, modeled vulnerabilities to carbon losses and median forest product life spans varied considerably across our study sites, which could be used to help prioritize treatment implementation.