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Geophysical measurements and related field data were collected by the U.S. Geological Survey (USGS) at the Alaska Peatland Experiment (APEX) site in Interior Alaska from 2018 to 2020 to characterize subsurface thermal and hydrologic conditions along a permafrost thaw gradient. The APEX site is managed by the Bonanza Creek LTER (Long Term Ecological Research). In April 2018, seven boreholes were emplaced to depths of 2.3-2.5 meters (m) to allow for repeat logging with downhole nuclear magnetic resonance (NMR) to quantify the spatial and temporal variations in unfrozen water content within active-layer and permafrost soils. NMR data were collected on ten separate occasions between April 2018 and October 2020. In June...
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Sage-grouse continue to use habitat following wildfire, so prioritizing high selection, low survival areas can help ameliorate potential post-wildfire ecological traps. This shapefile represents areas within the burn scars at the Virginia Mountains field site which are high selection and high or low survival which have been deemed to be 'priority' targets for post-fire restoration efforts. The 'burn scar' used in this project is an amalgamation of multiple fires which occurred within the field site during the summers of 2016 and 2017.
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Salt marshes of the Northeastern United States (Maine to Virginia) are vulnerable to loss given their history of intensive human alteration. One direct human modification – ditching – was common across the Northeast for salt hay farming since European Colonization and for mosquito control in the first half of the 20th century. We hand-digitized linear ditches across Northeastern intertidal emergent wetlands from contemporary aerial imagery within the bounds of the National Wetland Inventory's Estuarine Intertidal Emergent Wetland areas.
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Data are included from three parts of the research in the Delaware River focusing on three sites known to support populations of Alasmidonta heterodon (dwarf wedgemussel). Site Rating Curve Data was data used to create unique river stage to river discharge models for each of three sites used to model how site conditions varied compared to USGS River Gage conditions. Site Bathymetry and Water Depth data were used to create river bottom topography and water depth maps for the three sites. A compilation of 6pm river temperature data were used to create temperature prediction models for each of the three sites.
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These data are a habitat restoration index based on the intersection of loss of habitat selected by sage-grouse and loss of habitat contributions to nest survival following wildfire.
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This raster dataset represents spatially explicit predictions of fire frequency in the Mojave Desert based on models developed from data on perimeters of fires greater than 405 hectares that burned between 1972 through 2010. Raster resolution equals 30 meters, projection equals UTM Zone 11N.
Geophysical measurements and related field data were collected by the U.S. Geological Survey (USGS) at the Alaska Peatland Experiment (APEX) site in Interior Alaska from 2018 to 2020 to characterize subsurface thermal and hydrologic conditions along a permafrost thaw gradient. The APEX site is managed by the Bonanza Creek LTER (Long Term Ecological Research). Nine instrument monitoring sites (APEX1-APEX9) were established in April 2018. To quantify permafrost and thaw zone characteristics along the instrumented gradient, electrical resistivity tomography (ERT) data were collected in August 2018 along four 82 meter (m)-long transects between select sites: APEX1-3, APEX5-3, APEX5-7, and APEX6-8. Data were collected...
map background search result map search result map Site bathymetry, water temperature, and site rating curves data for three sites in the Delaware River (2005) Permafrost characterization at the Alaska Peatland Experiment (APEX): Geophysical and related field data collected from 2018-2020 APEX Electrical Resistivity Tomography (ERT) Data and Models from 2018 Predictive Model of Fire Frequency in the Mojave Desert Priority Areas for Habitat Restoration Post-Fire in the Virginia Mountains, Nevada (2018) Habitat Restoration Index for Greater Sage-Grouse in the Virginia Mountains, Nevada (2018) Mojave Desert Ecoregion Linear Ditches of Northeastern U.S. Coastal Marshes from Maine to Virginia Derived from 2023 2D Aerial Imagery Basemap Permafrost characterization at the Alaska Peatland Experiment (APEX): Geophysical and related field data collected from 2018-2020 APEX Electrical Resistivity Tomography (ERT) Data and Models from 2018 Site bathymetry, water temperature, and site rating curves data for three sites in the Delaware River (2005) Priority Areas for Habitat Restoration Post-Fire in the Virginia Mountains, Nevada (2018) Habitat Restoration Index for Greater Sage-Grouse in the Virginia Mountains, Nevada (2018) Mojave Desert Ecoregion Predictive Model of Fire Frequency in the Mojave Desert Linear Ditches of Northeastern U.S. Coastal Marshes from Maine to Virginia Derived from 2023 2D Aerial Imagery Basemap