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Three satellite fire detection models (threshold, contextual, and fuel mask) were compared and evaluated using National Oceanographic and Atmospheric Administration (NOAA)-11, NOAA-12, and NOAA-14 Advanced Very High Resolution Radiometer sensor data from interior Alaska. The fixed threshold model compared the radiant temperature of each pixel to predetermined threshold values. The contextual model compared the radiant temperature of each pixel to its surrounding (background) pixels. The fuel mask model is similar to the contextual model, but pixels were tested for fuel availability according to pre-fire vegetation index values. Fire location data from the Alaska Fire Service was used to assess the accuracy of the...
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This dataset includes volumetric soil-water content profiles with depth at selected sites in interior Alaska.
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This dataset includes physical and hydraulic properties at selected sites in interior Alaska. Physical properties include dry bulk density, loss on ignition, saturated soil water content, and particle size distribution. Hydraulic properties include field-saturated hydraulic conductivity.
Climate change coupled with an intensifying wildfire regime is becoming an important driver of permafrost loss and ecosystem change in the northern boreal forest. There is a growing need to understand the effects of fire on the spatial distribution of permafrost and its associated ecological consequences. We focus on the effects of fire a decade after disturbance in a rocky upland landscape in the interior Alaskan boreal forest. Our main objectives were to (1) map near-surface permafrost distribution and drainage classes and (2) analyze the controls over landscape-scale patterns of post-fire permafrost degradation. Relationships among remote sensing variables and field-based data on soil properties (temperature,...
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We studied nutrient reserve dynamics of female Lesser Scaup (Aythya affinis) to identify sources of intraspecific variation in strategies of nutrient acquisition for meeting the high nutritional and energetic costs of egg formation. We collected data from interior Alaska and combined these with data for Lesser Scaup from midcontinent breeding areas, allowing a range wide analysis for the species. We found little evidence that nutrient reserve use differed between Alaskan and midcontinent Lesser Scaup, except that subarctic birds used a small amount of protein reserves when forming eggs, whereas midcontinent birds did not. Mineral reserves contributed relatively little to the clutch, but endogenous lipid accounted...
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This data release presents measurements and derived parameters for attributes of bulk density, loss on ignition, soil-water retention, and hydraulic conductivity for a site (Richardson) near Hess Creek in interior Alaska, USA. These measurements are useful for hydrologic modeling and predictions of water availability in this region.
Yellow-cheeked voles occupy early successional habitats in boreal regions, but specific factors influencing the species' distribution and population dynamics are not well known. Yellow-cheeked voles were studied in three early post-fire habitats in interior Alaska to relate population parameters to habitat characteristics. Voles were live-trapped during June, July, and August of 1997 and 1998, and habitat components were measured withing trapping grids. Capture data were analyzed using the robust design to estimate vole abundance, density, survival, and recruitment. Yellow-cheeked voles were most abundant in the floodplain white spruce, where survival was stable and recruitment was high. The white spruce habitat...
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This dataset includes physical and hydraulic properties at selected sites in interior Alaska. These properties include soil-water retention data, and parameters used in a common soil-water retention model (van Genuchten model).
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Boreal wetland birds are among the continent’s most rapidly declining avifauna. However, many of these declining species still breed commonly on military lands in Alaska. We propose to survey these species, as well as, additional boreal wetland obligates at breeding sites on Eielson Air Force Base (AFB) and then track migratory movements throughout the annual cycle. Our surveys aim to identify important wetland features for conservation and levels of fragmentation that may reduce bird breeding numbers. Our tracking of birds during migration will identify habitats for conservation at key stopover and wintering areas, and therefore allow conservation on military lands in Alaska to be directly linked to conservation...
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This product consists of multiple tabular datasets and associated metadata of water quality information related to rivers, streams, and lakes in the Yukon River watershed between 2014 and 2018. This data release is apart of the National Aeronautics and Space Administration (NASA) funded Arctic-Boreal Vulnerability Experiment (ABoVE) and is an assessment of water quality and greenhouse gas fluxes within the interior of Alaska. Sampling frequency varied across locations, with some sites sampled twice a year or more. Data consist of: organic and inorganic carbon related species, carbon dioxide and methane gas fluxes calculated from manual chamber measurements, nitrogen species, carbon isotopes, oxygen and deuterium...
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This report presents the results of a harvest survey and ethnographic research project that investigated the subsistence uses of large land mammals and furbearers in Game Management Unit 25 in the Yukon Flats region of Interior Alaska. Large land mammal species harvested and used by Yukon Flats residents include moose Alces alces, caribou Rangifer tarandus, black bear Ursus americanus, and brown bear Ursus arctos. Furbearing species included in this study are marten Martes americana, lynx Lynx canadensis, and wolf Canis lupus. For the 2008–2009 study year a total of 284 of 467 households (approximately 61%) were surveyed in the 7 Yukon Flats communities of Beaver, Birch Creek, Chalkyitsik, Circle, Fort Yukon, Stevens...
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Contents: Overview: Executive summary -- Community Indicators: summary-- Characteristics of the population -- Households, families and housing -- Income, poverty and hunger -- Public assistance -- Industry -- Employment -- Education -- Vital statistics -- Substance abuse and mental health -- Health facilities and providers -- Law enforcement -- Crime rates and correctional facilities -- Family violence -- Child care -- Recreation and organizations -- Transportation -- Key Informant Survey: summary -- Survey data report -- Survey instrument -- Household Survey: summary.
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This data release presents measurements and derived parameters for attributes of bulk density, loss on ignition, soil-water retention, and hydraulic conductivity for a site (Richardson) near Hess Creek in interior Alaska, USA. These measurements are useful for hydrologic modeling and predictions of water availability in this region.
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This data release presents measurements and derived parameters for attributes of bulk density, loss on ignition, soil-water retention, and hydraulic conductivity for a site (Richardson) near Hess Creek in interior Alaska, USA. These measurements are useful for hydrologic modeling and predictions of water availability in this region.
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This data release presents measurements and derived parameters for attributes of bulk density, loss on ignition, soil-water retention, and hydraulic conductivity for a site (Richardson) near Hess Creek in interior Alaska, USA. These measurements are useful for hydrologic modeling and predictions of water availability in this region.
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This data release presents measurements and derived parameters for attributes of bulk density, loss on ignition, soil-water retention, and hydraulic conductivity for a site (adjacent to Richardson Creek) near Hess Creek in interior Alaska, USA. These measurements are useful for hydrologic modeling and predictions of water availability in this region. All methods for sample collection, sample processing, data file column headings, and data annotations are explained in the metadata files.
map background search result map search result map Intraspecific variation in nutrient reserve use during clutch formation by lesser scaup Community needs assessment 2002: Compass, charting a new direction for our community's future Subsistence Land Mammal Harvests and Uses, Yukon Flats, Alaska: 2008-2010 Harvest Report and Ethnographic Update Soil-water content Soil-water retention Physical and hydraulic properties Water quality and gas fluxes of Interior Alaska (2014-2018) Soil-water retention, hydraulic conductivity, bulk density, and loss on ignition near Hess Creek in interior Alaska Bulk density near Hess Creek in interior Alaska Loss on ignition near Hess Creek in interior Alaska Field-saturated hydraulic conductivity near Hess Creek in interior Alaska Soil-water retention near Hess Creek in interior Alaska Alaska Eielson Air Force Base Avian Study 2019-Present Alaska Eielson Reports 2019-Present Alaska Eielson Avian Nest Data, 2021-Present Alaska Eielson Avian Resight Data 2022-Present Alaska Eielson Protocol 2019-Present Bulk density near Hess Creek in interior Alaska Loss on ignition near Hess Creek in interior Alaska Field-saturated hydraulic conductivity near Hess Creek in interior Alaska Soil-water retention near Hess Creek in interior Alaska Alaska Eielson Air Force Base Avian Study 2019-Present Alaska Eielson Reports 2019-Present Alaska Eielson Avian Nest Data, 2021-Present Alaska Eielson Avian Resight Data 2022-Present Alaska Eielson Protocol 2019-Present Soil-water retention, hydraulic conductivity, bulk density, and loss on ignition near Hess Creek in interior Alaska Community needs assessment 2002: Compass, charting a new direction for our community's future Soil-water retention Physical and hydraulic properties Soil-water content Water quality and gas fluxes of Interior Alaska (2014-2018) Intraspecific variation in nutrient reserve use during clutch formation by lesser scaup Subsistence Land Mammal Harvests and Uses, Yukon Flats, Alaska: 2008-2010 Harvest Report and Ethnographic Update