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This product contains the transcribed count data from the Alaska Izembek Winter Brant Survey. These data were produced from transcribed georeferenced voice recordings using customized software developed by John Hodges (Program Record, Program Transcribe).
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This data release contains the environmental geospatial raster data sets used to estimate summer roosting habitat for 4 species considered under the United States Forest Service proposed Bat Conservation Strategy (Myotis lucifugus, MYLU; Myotis septentrionalis, MYSE; Myotis sodalis, MYSO; and Perimyotis subflavus, PESU). This suite of environmental data was hypothesized to influence summer roost habitat suitability and were produced at a spatial resolution of 250 m per pixel.
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Between September and November each year, nearly the entire world population of Pacific black brant (Branta bernicla nigricans) stages at Izembek Lagoon and surrounding estuaries (hereafter: Izembek Complex). The Izembek Complex is a unique area of protected brackish waters, supporting one of the world’s largest eelgrass beds and a diverse array of wildlife. The Alaska Fall Brant Survey has been conducted annually since 1976 in late-September through October, to provide an index of abundance for the entire post-breeding Pacific black brant population (Branta bernicla nigricans), while secondarily, providing annual fall population indices for cackling geese (Branta hutchinsii), emperor geese (Anser canagicus), and...
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This dataset contains taxonomic information, counts, and lengths of macroinvertebrates collected from rivers in northwest Alaska using drift and kick nets during summer and fall 2015-2019.
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The U.S. Geological Survey (USGS), in partnership with several federal agencies, has now developed and released seven National Land Cover Database (NLCD) products: NLCD 1992, 2001, 2006, 2011, 2016, 2019, and 2021. Beginning with the 2016 release, land cover products were created for two-to-three-year intervals between 2001 and the most recent year. These products provide spatially explicit and reliable information on the Nation’s land cover and land cover change. NLCD continues to provide innovative, consistent, and robust methodologies for production of a multi-temporal land cover and land cover change database. The NLCD 2021 release is update based, so the Land Cover and Impervious Surface products released in...
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Tabular and raster data containing spatial capture recapture records for male and female bighorn sheep (Ovis canadensis nelsoni) in Grand Canyon National Park and surrounding landscape collected from 2010 to 2018 and associated tabular data files required for analysis of data with spatial capture connectivity models and raster data describing the ouput from SCR models. Associated tables and rasters include details for traps and genetic captures, and the state space for required modeling and associated spatial covariates in models, as well as rasters describing population density and habitat use.
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Data presented are results of surveys and monitoring for Southwestern Willow Flycatcher (Empidonax traillii extimus) in San Diego County, California. These data were collected to assess Southwestern Willow Flycatcher abundance and distribution in San Diego County. Surveys were conducted in various years at 33 locations along 10 drainages in San Diego County, including portions of Agua Hedionda Creek, Cottonwood Creek, Escondido Creek, Los Penasquitos Creek, Otay River, San Diego River, San Dieguito River, San Luis Rey River, Sweetwater River, and Tijuana River. From 2016-19, Southwestern Willow Flycatcher territories were monitored at three locations along the upper San Luis Rey River (Cleveland National Forest,...
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Comma-separated values (.csv) file containing data related to amphibian sampling across the United States between 2016 and 2021. Data files contain mercury concentrations in amphibian and dragonfly tissues, mercury concentrations in sediment, as well as amphibian morphometrics, and habitat and climate characteristics where the samples were collected.
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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 dataset consists of fossil diatom counts from sediment cores collected in coastal environments on Montague Island, Alaska, and analyzed at Virginia Tech University.
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This data release documents the steps performed to create classified cropland fallow maps for the Northern Great Plains region of the United States from the years 2010 to 2019. The data release consists of the following: (i) an XML metadata file, (ii) a table of reference data (iii) two decision tree models, and (iv) 10 single band GeoTIFFs. The XML file named ‘Metadata.xml’ describes steps that were used to create this dataset. The table of reference data named ‘RefrenceSamples.csv’ list the training and validation point values used to train the decision tree classifiers and preform accuracy assessments. The two decision trees named ‘decisionTree_0.005.txt’ and ‘decisionTree_0.007.txt’ were used to classify remote...
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These data contain the results from the North American Bat Monitoring Program's (NABat) species distribution model (SDM) for the northern long-eared bat (Myotis septentrionalis). The provided tabular data includes predictions (with upper and lower confidence intervals) for northern long-eared bat occupancy probabilities (which represent the probability of presence) based on data from the entire summer season (May 1-August 31), averaged from 2017-2022, in each NABat grid cell (5km x 5km scale) across the range of the species. Specifically, predictions represent occupancy probabilities in the pre-volancy season in the summer (May 1–July 15), i.e., the period of time before juveniles can fly and become detectable by...
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Risk assessments describe the risk of a species’ invasion in a location, and many risk assessments have been produced by different institutions for various reasons. However, information is sporadically located online, increasing the difficulty of developing comprehensive lists of species with risk assessments or comparing assessment results across species in locations of interest. Therefore, we aggregated species risk assessments by searching information systems and conducting a literature review. The methods for data aggregation are explained in the larger work citation (Dean et al. 2024). The present dataset documents risk assessments available at different spatial scales (e.g., territory, state, region, nation)...
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This dataset includes egg total mercury concentrations, egg total mercury burden, egg length, egg width, predicted egg volume, and predicted fresh wet weight according to egg position in the laying sequence for tree swallow and house wren eggs from the Cache Creek Settling Basin and Cosumnes River Preserve, in California's Central Valley during 2018. These data support the following publication: Hartman, C.A., Ackerman, J.T., Cooney, B., and Herzog, M.P., 2024. Egg mercury concentration and egg size varies with position in the laying sequence in two songbird species. Environmental Toxicology and Chemistry.
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The USDA Forest Service (USFS) builds two versions of percent tree canopy cover (TCC) data to serve needs of multiple user communities. These datasets encompass the conterminous United States (CONUS), Coastal Alaska, Hawaii, and Puerto Rico and U.S. Virgin Islands (PRUSVI). The two versions of data within the v2021-4 TCC product suite include: - The raw model outputs referred to as the annual Science data; and - A modified version built for the National Land Cover Database referred to as NLCD data. They are available at the following locations: Science: https://data.fs.usda.gov/geodata/rastergateway/treecanopycover/ https://apps.fs.usda.gov/fsgisx01/rest/services/RDW_LandscapeAndWildlife NLCD: https://www.mrlc.gov/data...
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This data package contains location data collected by the Argos System (CLS America, Inc.) from satellite transmitters attached to 116 Lesser Yellowlegs captured at multiple sites across their breeding and nonbreeding range in North America, 2018-2021. The raw data were processed to accomplish two goals: 1) flag implausible location and 2) remove locations within Joint Base Elmendorf-Richardson (JBER) and Eielson Air Force Base boundaries. Removal of locations in military land boundaries is required due to federal guidelines by Department of Defense (DoD) Public Affairs office and DoD Partners in Flight. Due to data sharing constraints of participating agencies, not all the locations (i.e., latitude and longitude)...
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This data set is comprised of results associated with a multi-stage experimental study to determine the effects of paralytic shellfish toxin ingestion by Common Murres (Uria aalge) conducted in 2021-2022. Data is comprised of eight spreadsheets covering each phase of the study including specific bird dosing data, behavioral observation data, foraging trial data, and tissue testing results for Saxitoxin (STX) and related congeners.
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The Central Valley, and particularly the San Joaquin Valley, has a long history of land subsidence caused by groundwater development. The extensive withdrawal of groundwater from the unconsolidated deposits of the San Joaquin Valley lowered groundwater levels and caused widespread land subsidence—reaching 9 meters by 1981. More than half of the thickness of the aquifer system is composed of fine-grained sediments, including clays, silts, and sandy or silty clays that are susceptible to compaction. In an effort to aid water managers in understanding how water moves through the aquifer system, predicting water-supply scenarios, and addressing issues related to water competition, the United States Geological Survey...
map background search result map search result map Interferometric Synthetic Aperture Radar Data Used as Subsidence Observations for Model Calibration, Central Valley, California Desert bighorn sheep (Ovis canadensis nelsoni) datasets from Grand Canyon National Park, 2010-2016 Southwestern Willow Flycatcher (Empidonax traillii extimus) Surveys and Nest Monitoring in San Diego County, California (ver. 3.0, January 2024) Mercury concentrations in amphibian tissues across the United States, 2016-2021 Data Supporting Automated Cropland Fallow Algorithm (ACFA) for the Northern Great Plains of USA National Land Cover Database (NLCD) 2021 Impervious Products National Land Cover Database (NLCD) 2021 USFS Tree Canopy Cover Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019 Alaska Izembek Brant Winter Aerial Survey Raw Observations 2012-Present Alaska Izembek Fall Brant Aerial Survey 1976-Present Diatom Data from Coastal Environments on Montague Island, Alaska Risk assessments of animal species, plant species, and disease in the United States available online between 1990 and 2023 U.S. Fish and Wildlife Service Argos GPS Satellite Tracking Data for Lesser Yellowlegs (Tringa flavipes) Environmental Covariates for Estimating Summer Roost Suitability of North American Bat Species in the Eastern United States North American Bat Monitoring Program (NABat) Predicted Northern Long-Eared Bat Occupancy Probabilities Egg Mercury Concentration and Egg Size in Two Songbird Species Data Associated with a Multi-Stage Captive Trial Assessing the Effects of Saxitoxin Ingestion by Common Murres (Uria aalge) Alaska Eielson Air Force Base Avian Study 2019-Present Alaska Eielson Avian Nest Data, 2021-Present Alaska Eielson Avian Resight Data 2022-Present Diatom Data from Coastal Environments on Montague Island, Alaska Data Associated with a Multi-Stage Captive Trial Assessing the Effects of Saxitoxin Ingestion by Common Murres (Uria aalge) Alaska Eielson Air Force Base Avian Study 2019-Present Alaska Eielson Avian Nest Data, 2021-Present Alaska Eielson Avian Resight Data 2022-Present Egg Mercury Concentration and Egg Size in Two Songbird Species Southwestern Willow Flycatcher (Empidonax traillii extimus) Surveys and Nest Monitoring in San Diego County, California (ver. 3.0, January 2024) Alaska Izembek Fall Brant Aerial Survey 1976-Present Alaska Izembek Brant Winter Aerial Survey Raw Observations 2012-Present Desert bighorn sheep (Ovis canadensis nelsoni) datasets from Grand Canyon National Park, 2010-2016 Interferometric Synthetic Aperture Radar Data Used as Subsidence Observations for Model Calibration, Central Valley, California Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019 Data Supporting Automated Cropland Fallow Algorithm (ACFA) for the Northern Great Plains of USA North American Bat Monitoring Program (NABat) Predicted Northern Long-Eared Bat Occupancy Probabilities Environmental Covariates for Estimating Summer Roost Suitability of North American Bat Species in the Eastern United States National Land Cover Database (NLCD) 2021 Impervious Products National Land Cover Database (NLCD) 2021 USFS Tree Canopy Cover Mercury concentrations in amphibian tissues across the United States, 2016-2021 Risk assessments of animal species, plant species, and disease in the United States available online between 1990 and 2023 U.S. Fish and Wildlife Service Argos GPS Satellite Tracking Data for Lesser Yellowlegs (Tringa flavipes)