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Centaurea diffusa is one of the most destructive invasive weeds in the western USA and allelopathy appears to contribute to its invasiveness (Callaway & Aschehoug 2000). Here we identify a chemical from the root exudates of C. diffusa, 8-hydroxyquinoline, not previously reported as a natural product, and find that it varies biogeographically in its natural concentration and its effect as an allelochemical. 8-Hydroxyquinoline is at least three times more concentrated in C. diffusa-invaded North American soils than in this weed's native Eurasian soils and has stronger phytotoxic effects on grass species from North America than on grass species from Eurasia. Furthermore, experimental communities built from North American...
Bouteloua gracilis (Kunth) Lag. ex Griffiths (blue grama), Bouteloua eriopoda (Torr.) Torr. (black grama), and Larrea tridentata Coville (creosotebush) are dominant plants on the McKenzie Flats portion of the Llano de Manzano landform within Sevilleta National Wildlife Refuge in central New Mexico, part of the biome ecotone from the Colorado Shortgrass Steppe to the Chihuahuan Desert. In this study, we examine the hypothesis that soil heterogeneity, determined by variation in surface soil depth, carbonate accumulation, and fine-textured fraction, controls relative dominance of the three species. The area is flat, generally <1% slope; however, abrupt soil differences exist even within the flattest parts of the landscape...
This study evaluates biomarkers of mercury exposure among residents of Horlivka, a city in eastern Ukraine located in an area with geologic and industrial sources of environmental mercury, and residents of Artemivsk, a nearby comparison city outside the mercury-enriched area. Samples of urine, blood, hair, and nails were collected from study participants, and a questionnaire was administered to obtain data on age, gender, occupational history, smoking, alcohol consumption, fish consumption, tattoos, dental amalgams, home heating system, education, source of drinking water, and family employment in mines. Median biomarker mercury concentrations in Artemivsk were 0.26 μg/g-Cr (urine), 0.92 μg/L (blood), 0.42 μg/g...
The cold deserts of the Colorado Plateau contain numerous geologically and geochemically distinct sedimentary bedrock types. In the area near Canyonlands National Park in Southeastern Utah, geochemical variation in geologic substrates is related to the depositional environment with higher concentrations of Fe, Al, P, K, and Mg in sediments deposited in alluvial or marine environments and lower concentrations in bedrock derived from eolian sand dunes. Availability of soil nutrients to vegetation is also controlled by the formation of secondary minerals, particularly for P and Ca availability, which, in some geologic settings, appears closely related to variation of CaCO3 and Ca-phosphates in soils. However, the results...
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Soil Data Access is the name of a suite of web services and applications whose purpose is to meet requirements for requesting and delivering soil survey spatial and tabular data, that are not being met by the current Web Soil Survey and Geospatial Data Gateway websites.
The geochemical data included here were generated as part of a Technical Assistance Agreement between the U.S. Geological Survey (USGS) and Rio Tinto Exploration based in Salt Lake City, Utah. Beginning in November of 2015, we began a project to reanalyze up to 60,000 archived sample splits originally collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) project from selected areas in Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah. A small amount (approximately 0.25 g) of sieved <75 micron sample material was retrieved from the USGS National Geochemical Sample Archive for geochemical analysis. These samples were analyzed...
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This data release includes geochemical, x-ray diffraction mineralogical, and electron probe microanalysis (EPMA) data on rocks, soils, and sediments collected near the Orange Hill and Bond Creek porphyry copper deposits, Nabesna quadrangle, Alaska. Geochemical analyses were completed by a laboratory under contract with the U.S. Geological Survey (USGS). Electron microprobe and x-ray diffraction mineralogical analyses were completed by personnel of the Central Region Minerals Program in Denver, Colorado. The samples were collected and analyzed during 2014 to 2016, selected to help characterize the distribution and composition of mineralized and unmineralized geologic materials in this remote part of the eastern Alaska...
Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, Alaska Range, Alder Gulch, Bond Creek, Chathenda Creek, All tags...
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This map shows the current distribution of species assemblages for the ecoregion, typified by the type of environment each species assemblage is usually found (soil, tree type, or specific place). The input datasets used in the associated geospatial modeling are also included. These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate....
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This map shows the current distribution of species assemblages for the ecoregion, typified by the type of environment each species assemblage is usually found (soil, tree type, or specific place). The input datasets used in the associated geospatial modeling are also included. These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate....
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The storage and persistence of soil organic matter (SOM) is of critical importance to soil health, and to the terrestrial carbon cycle with implications for long-term climate change. To better understand the spatio-temporal controls on SOM, we have developed a new dataset spanning two previously described marine terrace soil chronosequences from northern, CA, USA: the Santa Cruz and the Mattole River chronosequences. Each of these sites, is comprised of several terraces surfaces that span at least 200 ka of soil development. The sites differ with regard to local precipitation, with the Mattole site receiving nearly double the mean annual precipitation of the Santa Cruz site. During the period from 2011 through 2016,...
The U.S. Geological Survey (USGS) has developed the PRObability of Streamflow PERmanence (PROSPER) model, a GIS raster-based empirical model that provides streamflow permanence probabilities (probabilistic predictions) of a stream channel having year-round flow for any unregulated and minimally-impaired stream channel in the Pacific Northwest region, U.S. The model provides annual predictions for 2004-2016 at a 30-m spatial resolution based on monthly or annually updated values of climatic conditions and static physiographic variables associated with the upstream basin. These values and variables, known as Continuous Parameter Grids, or CPGs, were used as the predictor variables in the model. The CPGs referenced...
Core Research Center, core C644, from well operated by FOREST OIL CORPRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "C644", "API Num": "4904120585", "Operator": "FOREST OIL CORP", "Well Name": "8 HENRY UNIT", "Field": "WEST LONE TREE", "State": "WY", "County": "UINTA", "Type": "SLABBED", "Photos": "T", "Thin Sec": "T", "Analysis": "T", "Latitude": "41.14776", "Longitude": "-110.14595", "coordinates_geohash": "9x3djddpj66v", "Source": "FROM STATE RECORDS", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "DAKOTA", "Age": "CRET", "Min Depth": "13804", "Max Depth": "13817"}, {"Formation":...
Core Research Center, core E270, from well operated by SHELL OIL COMPANYRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "E270", "API Num": "4904105216", "Operator": "SHELL OIL COMPANY", "Well Name": "2 LEROY", "Field": "WILDCAT", "State": "WY", "County": "UINTA", "Type": "SLABBED", "Photos": "T", "Thin Sec": "F", "Analysis": "F", "Latitude": "41.31854", "Longitude": "-110.61883", "coordinates_geohash": "9x374cccfqn5", "Source": "FROM STATE RECORDS", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "WEBER", "Age": "PENN", "Min Depth": "4622", "Max Depth": "5752"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/12316",...
Core Research Center, cutting DZ15616, from well operated by ANSCHUTZ CORPRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "DZ15616", "API Num": "4301930169", "Operator": "ANSCHUTZ CORP", "Well Name": "1 STATE (428)", "Field": null, "State": "UT", "County": "GRAND", "Thin Sec": "T", "Analysis": "T", "Latitude": "39.43986", "Longitude": "-109.51169", "coordinates_geohash": "9x40k5b1bdv2", "Source": "FROM STATE RECORDS", "Min": "0", "Max": "9865", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/37305",...
Core Research Center, cutting CZ06278, from well operated by EVERGREEN RESOURCESRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "CZ06278", "API Num": "4901121425", "Operator": "EVERGREEN RESOURCES", "Well Name": "17-1 HUNDAHL", "Field": "WC", "State": "WY", "County": "CROOK", "Thin Sec": "F", "Analysis": "F", "Latitude": "44.58264", "Longitude": "-104.93477", "coordinates_geohash": "9xvmshhbdwkq", "Source": "FROM STATE RECORDS", "Min": "140", "Max": "6120", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/19719",...
Core Research Center, cutting DZ01323, from well operated by SUN OIL CORaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "DZ01323", "API Num": "4304720394", "Operator": "SUN OIL CO", "Well Name": "1 NEIL-GOVERNMENT", "Field": "WILDCAT", "State": "UT", "County": "UINTAH", "Thin Sec": "F", "Analysis": "T", "Latitude": "40.43766", "Longitude": "-109.40943", "coordinates_geohash": "9x4nn36qrw0j", "Source": "FROM STATE RECORDS", "Min": "370", "Max": "4290", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/31554",...
Core Research Center, cutting DD19616, from well operated by LARIO OIL & GASRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "DD19616", "API Num": "4901121354", "Operator": "LARIO OIL & GAS", "Well Name": "1 UNIVERSAL FEDERAL", "Field": "MOORCROFT", "State": "WY", "County": "CROOK", "Thin Sec": "F", "Analysis": "F", "Latitude": "44.43468", "Longitude": "-104.94937", "coordinates_geohash": "9xvkgc44y2ty", "Source": "FROM STATE RECORDS", "Min": "483", "Max": "5800", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/48348",...
Core Research Center, cutting CZ14697, from well operated by GEODYNE RESOURCESRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "CZ14697", "API Num": "4901120774", "Operator": "GEODYNE RESOURCES", "Well Name": "1-8 BERGER", "Field": "WC", "State": "WY", "County": "CROOK", "Thin Sec": "F", "Analysis": "F", "Latitude": "44.59104", "Longitude": "-104.93503", "coordinates_geohash": "9xvmsjs9ss66", "Source": "FROM STATE RECORDS", "Min": "330", "Max": "6200", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/27335",...
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Nitrogen deposition is altering forest dynamics, terrestrial carbon storage, and biodiversity. However, our ability to forecast how different tree species will respond to N deposition, especially key response thresholds, is limited by a lack of synthesis across spatial scales and research approaches. To develop our best understanding of N deposition impact on tree growth and survival, we will integrate plot-­‐ level studies describing plant growth and survival responses to N inputs and plant-­‐ available soil nutrients with a continental scale analysis across a N deposition gradient. Our primary outcome will be estimates of tree response to N deposition with explicit representation of uncertainty and the identification...
map background search result map search result map Alaska Land Carbon Assessment Whole rock, soil, sediment, x-ray diffraction, and electron microprobe analyses of samples from the Orange Hill-Bond Creek area, Nabesna Quadrangle, Alaska Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah Soil Survey Geographic (STATSGO2) Database. BLM REA CBR 2010 Terrestrial Group Species Assemblage Status -Azonal Carbonate Rock Crevices BLM REA CBR 2010 Terrestrial Group Species Assemblage Status - Carbonate Limestone Dolomite Alpine Core Research Center Core C644 Core Research Center Core E270 Core Research Center Cutting CZ06278 Core Research Center Cutting CZ14697 Core Research Center Cutting DD19616 Core Research Center Cutting DZ01323 Core Research Center Cutting DZ15616 Soil Biogeochemical Data from a Marine Terrace Soil Climo-Chronosequence Comparison Whole rock, soil, sediment, x-ray diffraction, and electron microprobe analyses of samples from the Orange Hill-Bond Creek area, Nabesna Quadrangle, Alaska Soil Biogeochemical Data from a Marine Terrace Soil Climo-Chronosequence Comparison Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah BLM REA CBR 2010 Terrestrial Group Species Assemblage Status -Azonal Carbonate Rock Crevices BLM REA CBR 2010 Terrestrial Group Species Assemblage Status - Carbonate Limestone Dolomite Alpine Alaska Land Carbon Assessment Soil Survey Geographic (STATSGO2) Database.