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Drought and wildfire pose enormous threats to the integrity of natural resources that land managers are charged with protecting. Recent observations and modeling forecasts indicate that these stressors will likely produce catastrophic ecosystem transformations, or abrupt changes in the condition of plants, wildlife, and their habitats, in regions across the country in coming decades. In this project, researchers will bring together land managers who have experienced various degrees of ecosystem transformation (from not yet experiencing any changes to seeing large changes across the lands they manage) to share their perspectives on how to mitigate large-scale changes in land condition. The team will conduct surveys...
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Biogeochemical processes are key drivers of chemical solubility and mobilization. Understanding these processes will lead to improved predictive capabilities and may aid with watershed management decisions. This data release presents results from the Boulder Creek, Colorado watershed, including analyses of water and sediment. From April to August 2019, water samples were collected weekly at 2 sites along Boulder Creek and 4 tributary sites draining into Boulder Creek. In August 2022, water samples were collected every 2 hours for 34 hours at 2 sites on Boulder Creek (upstream and downstream of the city of Boulder). Samples for both studies were analyzed for major cations and anions, dissolved organic carbon, UV...
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Natural resource managers consistently identify invasive species as one of the biggest challenges for ecological adaptation to climate change. Yet climate change is often not considered during their management decision making. Given the many ways that invasive species and climate change will interact, such as changing fire regimes and facilitating the migration of high priority species, it is more critical than ever to integrate climate adaptation science and natural resource management. The coupling of climate adaptation and invasive species management remains limited by a lack of information, personnel, and funding. Those working on ecological adaptation to climate change have reported that information is not...
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Yosemite National Park, California. Hetch Hetchy Valley, viewed from the trail to Lake Eleanor near the proposed dam site. View is northeast. 1906.
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Airborne geophysical surveys were conducted in the eastern Adirondacks from Dec. 7, 2015 - Dec. 21, 2015, by Goldak Airborne Surveys. The area was flown along a draped surface with a nominal survey height above ground of 125 meters. The flight line spacing was 250 meters for traverse lines and 2500 meters for control lines. Here we present downloadable magnetic and radiometric (gamma spectrometry) data from those surveys as image (Geotiff) and flight line data (csv format). Background The Eastern Adirondacks region was known for iron mining in the 1800's and 1900's but it also contains deposits of rare earth minerals. Rare earth minerals are used in advanced technology such as in cell phones, rechargeable batteries...
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Album caption: Downstream face of Brush Dam across Pecos River above Grandfalls. Ward Co., Texas. No index card.
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Panorama of images 1211 and 1212 as seen in W.C. Alden's photo album. View of Shoshone Reservoir west of Cody. At left, canyon in which is Shoshone Dam. Shows Paleozoic and Mesozoic limestones and shales overlying granite on Rattlesnake anticline in Cedar Mountain, cut through by the canyon. Reservoir in broad valley to west (right). Park County, Wyoming. June 15, 1922.
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St. Francis Dam Flood March 12-13, 1928. Thirty automobiles are all that remain of the California Edison Construction Camp near Piru, California. Eighty nine perished here. March 18, 1928.
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Insect pollinators-particularly native bees-are critically important in the maintenance of terrestrial plant and animal communities, yet our understanding of how contemporary threats influence this group and the pollination services they provide is virtually unstudied with the sagebrush biome. Our investigation will quantify how bee communities respond to widespread threats to sagebrush-wildfire and invasive annual grasses-and provide foundational knowledge needed for undertaking informed management decisions to improve the resilience of the biome.
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St. Francis Dam Flood March 12-13, 1928, Los Angeles County, California. Final resting place of several huge concrete blocks from the west abutment of the dam, about one-third of a mile downstream from the dam. The tractor in the foreground marks the flood water line. March 17, 1928.
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The National Park Service (NPS) requests burn severity assessments through an agreement with the U.S. Geological Survey (USGS) to be completed by analysts with the Monitoring Trends in Burn Severity (MTBS) Program. The MTBS Program assesses the frequency, extent, and magnitude (size and severity) of all large wildland fires (wildfires and prescribed fires) in the conterminous United States (CONUS), Alaska, Hawaii, and Puerto Rico for the period 1984 and beyond. All fires reported as greater than 1,000 acres in the western U.S. and greater than 500 acres in the eastern U.S. are mapped across all ownerships. MTBS produces a series of geospatial and tabular data for analysis at a range of spatial, temporal, and thematic...
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The National Park Service (NPS) requests burn severity assessments through an agreement with the U.S. Geological Survey (USGS) to be completed by analysts with the Monitoring Trends in Burn Severity (MTBS) Program. The MTBS Program assesses the frequency, extent, and magnitude (size and severity) of all large wildland fires (wildfires and prescribed fires) in the conterminous United States (CONUS), Alaska, Hawaii, and Puerto Rico for the period 1984 and beyond. All fires reported as greater than 1,000 acres in the western U.S. and greater than 500 acres in the eastern U.S. are mapped across all ownerships. MTBS produces a series of geospatial and tabular data for analysis at a range of spatial, temporal, and thematic...
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The National Park Service (NPS) requests burn severity assessments through an agreement with the U.S. Geological Survey (USGS) to be completed by analysts with the Monitoring Trends in Burn Severity (MTBS) Program. The MTBS Program assesses the frequency, extent, and magnitude (size and severity) of all large wildland fires (wildfires and prescribed fires) in the conterminous United States (CONUS), Alaska, Hawaii, and Puerto Rico for the period 1984 and beyond. All fires reported as greater than 1,000 acres in the western U.S. and greater than 500 acres in the eastern U.S. are mapped across all ownerships. MTBS produces a series of geospatial and tabular data for analysis at a range of spatial, temporal, and thematic...
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The National Park Service (NPS) requests burn severity assessments through an agreement with the U.S. Geological Survey (USGS) to be completed by analysts with the Monitoring Trends in Burn Severity (MTBS) Program. The MTBS Program assesses the frequency, extent, and magnitude (size and severity) of all large wildland fires (wildfires and prescribed fires) in the conterminous United States (CONUS), Alaska, Hawaii, and Puerto Rico for the period 1984 and beyond. All fires reported as greater than 1,000 acres in the western U.S. and greater than 500 acres in the eastern U.S. are mapped across all ownerships. MTBS produces a series of geospatial and tabular data for analysis at a range of spatial, temporal, and thematic...
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The National Park Service (NPS) requests burn severity assessments through an agreement with the U.S. Geological Survey (USGS) to be completed by analysts with the Monitoring Trends in Burn Severity (MTBS) Program. The MTBS Program assesses the frequency, extent, and magnitude (size and severity) of all large wildland fires (wildfires and prescribed fires) in the conterminous United States (CONUS), Alaska, Hawaii, and Puerto Rico for the period 1984 and beyond. All fires reported as greater than 1,000 acres in the western U.S. and greater than 500 acres in the eastern U.S. are mapped across all ownerships. MTBS produces a series of geospatial and tabular data for analysis at a range of spatial, temporal, and thematic...
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These data products are preliminary burn severity assessments derived from data obtained from suitable imagery (including Landsat TM, Landsat ETM+, Landsat OLI, Sentinel 2A, and Sentinel 2B). The pre-fire and post-fire subsets included were used to create a differenced Normalized Burn Ratio (dNBR) image. The dNBR image attempts to portray the variation of burn severity within a fire. The severity ratings are influenced by the effects to the canopy. The severity rating is based upon a composite of the severity to the understory (grass, shrub layers), midstory trees and overstory trees. Because there is often a strong correlation between canopy consumption and soil effects, this algorithm works in many cases for Burned...
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Desert holly (Atriplex hymenelytra),the most drought resistant shrub in Death Valley. The ash of the leaves contains 30 to 35 percent of sodium chloride. Death Valley National Park. Inyo County, California. ca. 1960. (Photo by J. R. Stacy)
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Landscape-scale conservation of threatened and endangered species is often challenged by multiple, sometimes conflicting, land uses. In HawaiĘ»i, efforts to conserve native forests have come into conflict with objectives to sustain non-native game mammals, such as feral pigs, goats, and deer, for subsistence and sport hunting. Maintaining stable or increasing game populations represents one of the greatest obstacles to the recovery of Hawaii’s 425 threatened and endangered plant species. Many endemic Hawaiian species have declined and become endangered as a result of herbivorous non-native game mammals. Meanwhile, other environmental changes, including the spread of invasive grasses and changing precipitation patterns...


map background search result map search result map View of Shoshone Reservoir west of Cody. Park County, Wyoming. 1922. Desert holly (Atriplex hymenelytra),the most drought resistant shrub in Death Valley National Park. Inyo County, California. circa 1960. Landslide(?) damage to lower Van Norman Dam. San Fernando, California, Earthquake February 1971. Landslide and other damage at lower Van Norman Dam. San Fernando, California, Earthquake February 1971. 1971. Downstream face of Brush Dam across Pecos River above Grandfalls. Ward County, Texas. No date. Final resting place of several huge concrete blocks from the west abutment of the dam. St. Francis Dam Flood March 12-13, 1928 Los Angeles County, California. 1928. St. Francis Dam Flood at the California Edison Construction Camp near Piru, California. 1982. Hetch Hetchy Valley, viewed from the trail to Lake Eleanor near the proposed dam site. Yosemite National Park, California. 1906. Airborne Geophysical Surveys over the Eastern Adirondacks, New York State Managing Non-native Game Mammals to Reduce Future Conflicts with Native Plant Conservation in Hawai‘i Creating a North Central Regional Invasive Species and Climate Change (NC RISCC) Management Network Learning From the Past and Planning for the Future: Experience-Driven Insight Into Managing for Ecosystem Transformations Induced by Drought and Wildfire National Park Service Thematic Burn Severity Mosaic in 2018 (ver. 8.0, August 2024) National Park Service Thematic Burn Severity Mosaic in 2013 (ver. 8.0, August 2024) National Park Service Thematic Burn Severity Mosaic in 2006 (ver. 8.0, August 2024) National Park Service Thematic Burn Severity Mosaic in 1996 (ver. 8.0, August 2024) National Park Service Thematic Burn Severity Mosaic in 1995 (ver. 8.0, August 2024) Biogeochemical Data from Field Samples and Laboratory Experiments, Boulder Creek Watershed, Colorado (2019-2023) Burned Area Reflectance Classification (BARC) Thematic Burn Severity Mosaic for 2023 (ver. 6.0, January 2024) Assessing the impact of invasive annual grasses and wildfire on native pollinators within the sagebrush-steppe biome Landslide(?) damage to lower Van Norman Dam. San Fernando, California, Earthquake February 1971. Landslide and other damage at lower Van Norman Dam. San Fernando, California, Earthquake February 1971. 1971. St. Francis Dam Flood at the California Edison Construction Camp near Piru, California. 1982. Biogeochemical Data from Field Samples and Laboratory Experiments, Boulder Creek Watershed, Colorado (2019-2023) Hetch Hetchy Valley, viewed from the trail to Lake Eleanor near the proposed dam site. Yosemite National Park, California. 1906. Downstream face of Brush Dam across Pecos River above Grandfalls. Ward County, Texas. No date. Airborne Geophysical Surveys over the Eastern Adirondacks, New York State Managing Non-native Game Mammals to Reduce Future Conflicts with Native Plant Conservation in Hawai‘i Final resting place of several huge concrete blocks from the west abutment of the dam. St. Francis Dam Flood March 12-13, 1928 Los Angeles County, California. 1928. Desert holly (Atriplex hymenelytra),the most drought resistant shrub in Death Valley National Park. Inyo County, California. circa 1960. View of Shoshone Reservoir west of Cody. Park County, Wyoming. 1922. Assessing the impact of invasive annual grasses and wildfire on native pollinators within the sagebrush-steppe biome Learning From the Past and Planning for the Future: Experience-Driven Insight Into Managing for Ecosystem Transformations Induced by Drought and Wildfire Creating a North Central Regional Invasive Species and Climate Change (NC RISCC) Management Network Burned Area Reflectance Classification (BARC) Thematic Burn Severity Mosaic for 2023 (ver. 6.0, January 2024) National Park Service Thematic Burn Severity Mosaic in 1995 (ver. 8.0, August 2024) National Park Service Thematic Burn Severity Mosaic in 2013 (ver. 8.0, August 2024) National Park Service Thematic Burn Severity Mosaic in 1996 (ver. 8.0, August 2024) National Park Service Thematic Burn Severity Mosaic in 2018 (ver. 8.0, August 2024) National Park Service Thematic Burn Severity Mosaic in 2006 (ver. 8.0, August 2024)