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Accelerating disturbance activity under a warming climate increases the potential for multiple disturbances to overlap and produce compound effects that erode ecosystem resilience — the capacity to experience disturbance without transitioning to an alternative state. A key concern is the potential for amplifying or attenuating feedbacks via interactions among successive, linked disturbance events. Following severe wildfires, fuel limitation is a negative feedback that may reduce the likelihood of subsequent fire. However, the duration of, and pre-fire vegetation effects on fuel limitation remain uncertain. To address this knowledge gap, we characterized fuel profiles over a 35-year post-fire chronosequence in California...
The combination of continuing anthropogenic impact on ecosystems across the globe and the observation of catastrophic shifts in some systems has generated substantial interest in understanding and predicting ecological tipping points. The recent establishment and full operation of NEON has created an opportunity for researchers to access extensive datasets monitoring the composition and functioning of a wide range of ecosystems. These data may be uniquely effective for studying regime shifts and tipping points in ecological systems because of their long time horizon, spatial extent, and most importantly the coordinated monitoring of many biotic and abiotic components of focal ecosystems. The variety of these data...
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Forests west of the Cascade Crest in Oregon and Washington have been shaped by infrequent but severe wildfires that historically occurred at intervals spanning several centuries. Since the mid-1900s, relatively few fires have occurred in the region, resulting in a general lack of understanding of the drivers of these fires, the impacts on ecosystems, and possible management responses. Most of the current regional understanding of fire regimes and impacts instead comes from the drier, interior forests. However, recent fire events between 2014 and 2018 (e.g., the Norse Peak Fire in Washington) have raised concern among land managers in the Pacific Northwest about fire risk in a warming climate. This project will...
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As the dominant force that sets the structure and function of most Pacific Northwest forests, fire is likely to be the major catalyst of forest change in a warming climate. Rising temperatures, decreased snowpack, and earlier snowmelt are expected to lead to longer fire seasons, drier fuel, and an increase in the area burned by wildfires in the future. Forest managers therefore need information on how wildfire patterns and forests will change as the climate warms, in order to guide management activities that can sustain the important ecosystem services that forests provide – including timber production, carbon storage, improved water quality, and recreational opportunities. To address this need, researchers developed...
    map background search result map search result map Changing Fires, Changing Forests: The Effects of Climate Change on Wildfire Patterns and Forests in the Pacific Northwest Forest Fires in Western Cascadia: Evaluating Drivers and Impacts to Inform Climate-Adaptive Management Responses Forest Fires in Western Cascadia: Evaluating Drivers and Impacts to Inform Climate-Adaptive Management Responses Changing Fires, Changing Forests: The Effects of Climate Change on Wildfire Patterns and Forests in the Pacific Northwest