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In the northern Colorado Front Range, fire suppression during the 20th century is believed to have created a high hazard of catastrophic fire in ponderosa pine (Pinus ponderosa) forests. Since the early 1990s, resource managers have increased the use of prescribed fires to re-create fire regimes and forest structures similar to those of the pre-Euro-American settlement period in order both to reduce fire hazard and to improve forest health. To improve understanding of historical fire regimes, we conducted a study of fire history along an elevational gradient from \sim1830 to 2800 m in ponderosa pine forests in the northern Front Range. Fire-scar dates were determined from 525 partial cross sections from living and...
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All FRCC calculations were done in ArcGIS 9.3.1 with the FRCC Mapping Tool version 2.2.0, using Landfire Biophysical Settings (BpS) and Succession Class (S-Class) layers and the default Landfire Reference Condition table (LFnat_west). All calculations were performed at a 30-meter resolution. Input BpS and S-Class layers were downloaded using the Landfire Data Access Tool version 2.2 (configuration database version 1.27, feature database version 1.02). Three landscape levels were used in all calculations, the 4th, 5th and 6th field HUCs from the "Pacific NW Sixth Field Hucs" GIS layer from Bonneville Power Administration (Subbasins, Watersheds and Subwatersheds, resp.). FRCC Calculation Procedure For each of the...
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These data show the Fire History Indicator for the Pine Flatwoods and Dry Prairie Conservation Asset in Florida. Fire Regime is an ecological indicator for the Pine Flatwoods and Dry Prairie Conservation Asset of the Florida Landscape Conservation Project (LCP). The LCP entails a large-scale assessment of and planning for the health of important natural resources, known as Conservation Assets (CAs), in Florida. Conservation planning at the landscape scale provides a framework for safeguarding functional ecosystems, and their interconnected processes required for maintaining healthy resources. Spatially explicit data from the project informs coordination and prioritization for making conservation decisions. A suite...
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These data show the fire history indicator for Freshwater Non-Forested Wetlands (FNFW) through 2018. Fire Regime is an ecological indicator for the Landscape Conservation Project (LCP) for Florida. The LCP entails a large-scale assessment of and planning for the health of important natural resources, known as Conservation Assets (CAs), in Florida. Conservation planning at the landscape scale provides a framework for safeguarding functional ecosystems, and their interconnected processes required for maintaining healthy resources. Spatially explicit data from the project informs coordination and prioritization for making conservation decisions. Additionally, a suite of ecological indicators was carefully selected...
Content Changing aspen distribution in response to climate change and fire is a major focus of biodiversity conservation, yet little is known about the potential response of aspen to these two driving forces along topoclimatic gradients. Objective This study is set to evaluate how aspen distribution might shift in response to different climate-fire scenarios in a semi-arid montane landscape, and quantify the influence of fire regime along topoclimatic gradients. Methods We used a novel integration of a forest landscape succession and disturbance model (LANDIS-II) with a fine-scale climatic water deficit approach to simulate dynamics of aspen and associated conifer and shrub species over the next 150 years under...
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Fire history metrics enable rapidly increasing amounts of burned area data to be collapsed into a handful of data layers that can be used efficiently by diverse stakeholders. In this effort, the U.S. Geological Survey's Landsat Burned Area product was used to identify burned area across CONUS over a 40-year period (1984-2023). The Landsat BA product was consolidated into a suite of annual BA products, which in-turn were used to calculate a series of contemporary fire history metrics (30 m resolution). Fire history metrics included: (1) fire frequency (FRQ), (2) time since last burn (TSLB) and (3) year of last burn (YLB), (4) longest fire-free interval (LFFI), and (5) average fire interval length (FIL). All metrics...
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This data layer represents a potential Conservation Target for PFLCC's 'Hardwood Forested Uplands' Priority Resource (PR). The potential CT is Fire Regime. These layers were created for an initial investigation of potential CT's suggested at brainstorming workshops. The initial investigation entails locating available datasets to address the suggested CT as closely as possible and performing minimal analyses to determine their usefulness. The final set of CT's and their associated datasets will be chosen after targets (e.g., endpoints) are established as a threshold for achieving conservation success for that CT. Currently the USGS Landfire (also known as the Landscape Fire and Resource Management Planning Tools)...
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This data layer represents a potential Conservation Target for PFLCC's 'High Pine and Scrub' Priority Resource (PR). The potential CT is Fire Regime. The layer was created for an initial investigation of potential CT's suggested by PFLCC stakeholders at brainstorming workshops. The initial investigation entails locating available datasets to address the suggested CT as closely as possible and performing limited analyses to determine their usefulness. The final set of CT's and their associated datasets will be chosen after targets (e.g., endpoints) are established as a threshold for achieving conservation success for that CT. Currently the USGS Landfire (also known as the Landscape Fire and Resource Management...
On October 27, Paul Rogers of the Western Aspen Alliance discussed the impact of climate change on aspen ecosystems, with an emphasis on aspen fire types.The presentation covered the variability of aspen responses to fire and emphasized unique fire-related systems to wean practitioners from one-size-fits-all prescriptions for aspen forests. The Western Aspen Alliance is a partnership established to improve the management of aspen by linking ecological, social and economic sciences through collaboration and information sharing.
Quaking aspen (Populus tremuloides Michx.) is the most widespread tree species in North America, and it is found throughout much of the Mountain West (MW) across a broad range of bioclimatic regions. Aspen typically regenerates asexually and prolifically after fire, and due to its seral status in many western conifer forests, aspen is often considered dependent upon disturbance for persistence. In many landscapes, historical evidence for post-fire aspen establishment is clear, and following extended fire-free periods senescing or declining aspen overstories sometimes lack adequate regeneration and are succeeding to conifers. However, aspen also forms relatively stable stands that contain little or no evidence of...
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This database includes fire perimeter polygons for fires which reached a size >= 385 ha, and burned between the years of 1984-2011. Each fire has a unique numeric identifier of "PolyID". Additional attributes are as follows: FIRE_ID: For those fires with an ID, the ID assigned by the reporting agency of the MTBS project. FIRENAME: Names of those fires which are named. This is uncommon in Canada. YEAR: The year the fire burned. MONTH: The month the fire burned. If no month data is available the field includes a 0. DAY: The date the fire burned. Depending on the agency which provided the data, this may be the ignition date, the date of initial observation, the date of initial response, or the date the fire was extinguished....
Quaking aspen (Populus tremuloides) woodlands are expected to be sensitive to climate change, and have declined in parts of the West. Great Basin mountain ranges may be near the limits of aspen’s climatic threshold, in terms of temperature and aridity, and thus are particularly vulnerable to climate change. Birds associating with aspen are likely to undergo regional population fluctuations and changes in distribution as a result of changes in aspen availability or distribution. Thus, understanding the habitat relationships of avian communities in aspen and other montane cover types is important for tracking the impacts of future landscape change. The mountainous terrain of the Humboldt-Toiyabe National Forest in...
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These data represent a potential Conservation Target for Working Lands (WL) Priority Resource of the PFLCC. The potential Conservation Target is fire regime, an important factor for maintaining some types of forestry and agriculture. At this time, the USGS Landfire data set is the only available spatial data that indicate fire status of an area. Landfire data are intended for use in larger contexts that Florida working lands unless additional efforts are made to refine data for a smaller area. In our situation, landfire is an interim data set only because a refined fire database is currently in development for Florida. The refined database will be based on both burn permit records as well as remote sensing and...
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These data show the Fire History Indicator for the High Pine and Scrub Conservation Asset in Florida. Fire Regime is an ecological indicator for the High Pine and Scrub Conservation Asset of the Florida Landscape Conservation Project (LCP). The LCP entails a large-scale assessment of and planning for the health of important natural resources, known as Conservation Assets (CAs), in Florida. Conservation planning at the landscape scale provides a framework for safeguarding functional ecosystems, and their interconnected processes required for maintaining healthy resources. Spatially explicit data from the project informs coordination and prioritization for making conservation decisions. Additionally, a suite of ecological...
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This data layer represents a potential Conservation Target for PFLCC's 'Pine Flatwoods and Dry Prairie' Priority Resource (PR). The potential CT is Fire Regime. These layers were created for an initial investigation of potential CT's suggested at brainstorming workshops. The initial investigation entails locating available datasets to address the suggested CT as closely as possible and performing minimal analyses to determine their usefulness. The final set of CT's and their associated datasets will be chosen after targets (e.g., endpoints) are established as a threshold for achieving a conservation success for that CT. Currently the USGS Landfire -- Event Class vegetation structure core layer is the only available...
Quaking aspen is generally considered to be a fire-adapted species because it regenerates prolifically after fire, and it can be replaced by more shade-tolerant tree species in the absence of fire. As early-successional aspen stands transition to greater conifer-dominance, they become increasingly fire prone, until fire returns, and aspen again temporarily dominate. While this disturbance-succession cycle is critical to the persistence of aspen on many landscapes, some aspen stands persist on the landscape without fire. The complex role of fire is an important consideration for developing conservation and restoration strategies intended to sustain aspen.
    map background search result map search result map Fire Regime Condition Class (FRCC) for Pacific Northwest (Region 6) National Forests (2/10/2010) GNLCC Large Fire Database, 1984-2011 PFDP CT Landfire HFU Fire Regime HPS Fire Regime Working Lands Fire Regime Freshwater Non-Forested Wetlands - Fire Regime High Pine and Scrub - Fire Indicator Pine Flatwoods and Dry Prairie - Fire Regime Final Indicator Contemporary fire history metrics for the conterminous United States (1984-2023) (ver. 3.0, April 2024) High Pine and Scrub - Fire Indicator Freshwater Non-Forested Wetlands - Fire Regime Pine Flatwoods and Dry Prairie - Fire Regime Final Indicator HPS Fire Regime Working Lands Fire Regime PFDP CT Landfire HFU Fire Regime Fire Regime Condition Class (FRCC) for Pacific Northwest (Region 6) National Forests (2/10/2010) GNLCC Large Fire Database, 1984-2011 Contemporary fire history metrics for the conterminous United States (1984-2023) (ver. 3.0, April 2024)