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Aspen is a highly valued tree species in western forests, but it has been declining due to drought, herbivory, and fire suppression. Fire suppression has contributed to aspen’s decline because post-fire environments provide more opportunities for aspen to regenerate, both by resprouting and by seed. Regeneration from seed in these post-fire settings is particularly valuable because it increases aspen population genetic diversity and resilience. However, natural seeding events are not common, and mortality rates for seedlings are quite high. Nursery-grown seedlings provide a promising alternative and an opportunity for assisted migration, but planting protocols have not been well developed and mortality rates for...
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Fire size, frequency, overall area burned, and severity are increasing across many vegetation types in the southwestern U.S. In many cases, large contiguous areas are burning repeatedly at high severity, triggering vegetation type conversions (VTC), where once-dominant coniferous forests fail to return to their pre-fire state, often transitioning to shrub- or grass-dominated systems. Loss of these forests affects biodiversity, ecosystem services, and culturally-valued resources. The science and management communities, however, currently lack a comprehensive understanding of VTC in this region. This study will help identify and fill sizable research gaps by synthesizing manager observations and the current scientific...
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Despite the pandemic, Future of Fire postdoc Dr. Nina Fontana developed and contributed to a range of projects with cultural fire practitioners from 2021-2023. This funding will provide her an additional year to complete and grow projects started with partners as a Future of Fire fellow. Fontana’s work focuses on two broad areas: (1) improving best practices in teaching and learning about cultural fire, and (2) developing culturally relevant decision support tools to support cultural fire practitioners. Fontana will continue to develop and assess group experiential learning and practices that expand cultural fire education for different audiences. She will also continue her collaborations with tribal partners...
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In recent years, a number of catastrophic wildfires have fundamentally changed species composition and structure across a large area of the Sierra Nevada of California. These fires leave behind many large, severely burned patches of land where the majority of trees have died. To make informed management decisions, forest managers need to understand the long-term effects of these fires on vegetation recovery and fuel loading. Large patches without trees might not reforest on their own which can cause forest loss; and, high-severity fires may lead to other high-severity fires by increasing the amount of fuel available to burn. Such repeat fires could lower the odds of any postfire forest recovery. By including...
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Indigenous knowledge systems, such as traditional ecological knowledge, contain climate observations and adaptation strategies reaching back millennia. These include methods for caring for our natural resources and relations, such as through drought resilient agriculture, soil, and water management practices. Despite a growing global recognition among researchers and resource managers of the value of Indigenous knowledges and practices for enhancing human capacity to adapt to climate change impacts, we face historic inequities that hinder cross-cultural knowledge exchange and innovation. This includes a tendency towards extractive research, accessing Indigenous knowledges without regarding Indigenous decision-making...
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Recently intensifying drought conditions have caused increased stress to non-native tamarisk vegetation across riparian areas of the San Carlos Apache Tribe (hereafter Tribe) and the Upper Gila River watershed in Arizona and New Mexico. This also increases wildfire risk in the area, making the removal of tamarisk vegetation a primary restoration and climate adaptation objective for the Tribe. The research from this project can improve the Tribe’s capacity to map tamarisk and other riparian vegetation, in addition to monitoring the relative condition and water stress of the vegetation in a timely manner. Specifically, the project will help identify where tamarisk is on the reservation and inform restoration actions...
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Big sagebrush plant communities are important and widespread in western North America and are crucial for meeting long-term conservation goals for greater sage-grouse and other wildlife of conservation concern. Yet wildfire is increasing in the West, turning biodiverse, shrub-based ecosystems dominated by sagebrush into grasslands containing invasive species such as cheatgrass and less overall plant and animal diversity. These transformations negatively impact people and ecosystems by reducing habitat quality for wildlife and the aesthetic value of the landscape. Understanding how sagebrush communities are already responding and will continue to respond to changes in wildfire, invasive species, and climate is...
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Increasing wildfire activity in the western US poses profound risks for human communities and ecological systems. Recent fire years are characterized not only by expanding area burned but also explosive fire growth. In 2020, several fires grew by >100,000 acres within a 24-hour period. Extreme single-day fire spread events such as these are poorly understood but disproportionately responsible for wildfire impacts: just the top 1% of fire spread events account for 20% of annual area burned. Extreme events are linked to warmer and drier conditions, and we project that their frequency could double under future climate. Extreme fire spread events defy suppression and overcome traditional fuels reductions treatments,...
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The Southwest Fire Climate Adaptation Partnership (SW FireCAP) is working to advance fire and climate adaptation in the southwestern U.S. Focused on cross-organizational collaboration and leveraging resources, the partnership facilitates climate adaptation planning by “sharing Indigenous and Western knowledge perspectives, being inclusive, and building trust.” The Collaborative Conservation and Adaptation Strategies Toolbox (CCAST) is a similar effort, established to document effective conservation initiatives and develop decision-support tools. Both initiatives are focused on showcasing high quality science-to-policy research and innovative, on-the-ground conservation management practices and promoting peer-to-peer...
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Fires are becoming more extensive and severe in the West, and post-fire recovery is a challenge for communities as they adapt to a changing climate. Post-fire management can involve watershedrehabilitation, recovering valuable trees, and replanting to prevent forest loss and damage to watersheds. Land management agencies that make decisions may prioritize goals that differ from those of local populations--especially Native American Tribes, who may focus primarily on recovering non-timber values, such wetlands or species that provide food, fiber, or medicine, on their reservations and on their ancestral homelands. The goal of this research is to inform post-fire management and policy, so it is more responsive to...
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In ecosystems of the southwestern US intensifying wildfires and climatic shifts are causing widespread tree mortality and slowed recovery after fires. Ecological refugia are areas that retain intact biological features or ecological processes after disturbance. These refugia are essential for the survival of a wide array of species and communities and aid in ecosystem recovery by repopulating surrounding areas. Researchers supported by this Southwest CASC project are using complex ecological modeling to study the effects of changing climate and wildfire regimes on ecological refugia, to provide useful information for conservation planning. This study (a) identifies future refugia and the biological and physical...
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Wildfire is a natural and essential process in forest ecosystems, but characteristics of fire regimes that have shaped these landscapes over long time scales are changing with climate change and human activities. In some places, changes in fire size, frequency, and severity threaten to degrade essential ecosystem services that produce clean air and water, fertile soil for crop and wood production, and habitat for plant and animal species. Hence, it is urgent to understand how both our actions and inactions contribute to the vulnerability of forest ecosystems and to develop management practices that help sustain and conserve vegetation and wildlife communities in vulnerable forest systems. Our project will address...
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Indigenous peoples and nations are on the front lines of climate change impacts and are leading the way in innovative adaptation action, such as in the use of traditional burning. Traditional burning has been recognized as a robust adaptation strategy, increasing the resiliency of ecosystems and the local communities that depend on them for their economic and social well-being. Furthermore, implementing natural fire practices may help reduce the likelihood of catastrophic fires and increase ecosystem water holding capacity. Traditional burning may be applied singularly or as a complementary approach with other ecosystem restoration practices, such as thinning and prescribed burning. The overarching goal of this...
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The Colorado River provides water to 40 million people in the southwestern United States. Consistent water level declines in Colorado River Basin reservoirs have focused research attention on the long-term changes in winter precipitation and the timing of snowmelt and runoff. Research on how warming temperatures affect winter precipitation and spring snowmelt is ongoing, however, less attention has been given to changes in spring and summer precipitation which also affects water supply, plant growth, and competition between native and non-native plants, and, in turn affects wildfire dynamics and wildlife habitat. The amount and timing of summer precipitation is largely influenced by variation in the North American...
map background search result map search result map Big Sagebrush Response to Wildfire and Invasive Grasses in the 21st Century Understanding Fire-caused Vegetation Type Conversion in Southwestern Conifer Forests under Current and Future Climate Conditions Indigenous-Led Climate Adaptation Strategies: Integrating Landscape Condition, Monitoring, and Cultural Fire with the North Fork Mono Tribe Assessing Vulnerability of Vegetation and Wildlife Communities to Post-Fire Transformations to Guide Management of Southwestern Pine Forests and Woodlands Understanding Forest Recovery Priorities, Management Options, and Policy Needs for Tribes in Post-Fire Landscapes Understanding Extreme Wildfire Events to Manage for Fire-Resistant and Resilient Landscapes Shifting from Extractive to Self-determined: Enhancing Indigenous Research and Data Governance in Southwest Climate Adaptation Initiatives Promoting Peer-to-Peer Knowledge Exchange on Climate and Fire Adaptation in the Southwestern United States Understanding the Effects of Seasonal Precipitation Changes on Hydrology and Ecosystems in the Colorado River Basin The Effects of Catastrophic Wildfires on Vegetation and Fuel Loads in the Sierra Nevada of California Future of Fire Phase II: Learning by Doing with Cultural Fire Practitioners Mapping Riparian Vegetation Response to Climate Change on the San Carlos Apache Reservation and Upper Gila River Watershed to Inform Restoration Priorities: 1935 to Present (Phase 2) Assessing Post-Fire Aspen Seedling Success on the Colorado Plateau From Refugia to Resilience: Wildfires, Changing Climate, and Landscape Transformation in the Southwestern U.S. From Refugia to Resilience: Wildfires, Changing Climate, and Landscape Transformation in the Southwestern U.S. Mapping Riparian Vegetation Response to Climate Change on the San Carlos Apache Reservation and Upper Gila River Watershed to Inform Restoration Priorities: 1935 to Present (Phase 2) The Effects of Catastrophic Wildfires on Vegetation and Fuel Loads in the Sierra Nevada of California Indigenous-Led Climate Adaptation Strategies: Integrating Landscape Condition, Monitoring, and Cultural Fire with the North Fork Mono Tribe Future of Fire Phase II: Learning by Doing with Cultural Fire Practitioners Understanding the Effects of Seasonal Precipitation Changes on Hydrology and Ecosystems in the Colorado River Basin Assessing Post-Fire Aspen Seedling Success on the Colorado Plateau Understanding Extreme Wildfire Events to Manage for Fire-Resistant and Resilient Landscapes Shifting from Extractive to Self-determined: Enhancing Indigenous Research and Data Governance in Southwest Climate Adaptation Initiatives Assessing Vulnerability of Vegetation and Wildlife Communities to Post-Fire Transformations to Guide Management of Southwestern Pine Forests and Woodlands Understanding Fire-caused Vegetation Type Conversion in Southwestern Conifer Forests under Current and Future Climate Conditions Promoting Peer-to-Peer Knowledge Exchange on Climate and Fire Adaptation in the Southwestern United States Understanding Forest Recovery Priorities, Management Options, and Policy Needs for Tribes in Post-Fire Landscapes Big Sagebrush Response to Wildfire and Invasive Grasses in the 21st Century