Filters: Tags: Soil Sciences (X) > partyWithName: U.S. Geological Survey - ScienceBase (X)

Filters Date Range Past year (74) Past month (19) Past week (4) Past day (0) Custom range... To   Search Extensions Shapefile (12) Raster (6) ArcGIS Service Definition (1) Types Map Service (70) OGC WFS Layer (63) OGC WMS Layer (63) OGC WMS Service (52) Downloadable (19) More... Contacts U.S. Geological Survey Ecosystems Water Resources Travis W Nauman Southwest Biological Science Center More... Categories Data (180) Data Release - Revised (6) pre-SM502.8 (2) Data Release - Provisional (1) Data Release - Under Revision (1) Tag Types Theme (289) Place (274) USGS Scientific Topic Keyword (263) Harvest Set (259) Label (7) CMS Topics (2) CMS Non-theme Topics (2) More... Tag Schemes None (153) USGS Thesaurus (230) Geographic Names Information System (GNIS) (109) Common geographic areas (72) ISO 19115 Topic Category (140) USGS Biocomplexity Thesaurus (32) ISO 19115 Topic Categories (65) More... View Results as: JSON ATOM CSV

The chemistry of eolian quartz dust and the origin of chert Temporal and spatial sources of silica for chert remain poorly constrained. Modern sources to the worlds oceans include silica in rivers > aeolian (dust) deposition > sea floor vents and submarine weathering. However, changes in aridity and dust flux during the Phanerozoic may explain variations in the ocean silica cycle and times and places of chert formation. The chemistry of fine quartz dust (FQD) provides a chemical mechanism for the transformation of FQD to polymorphs of silica in chert; FQD is readily dissolved, then reprecipitated as Opal-A by either biotic or abiotic processes. An unequivocal relation between increases in dust flux and biogenic opal-A in the western Pacific Ocean during the past 200 kyr... Tags: Africa, Energy Resources, Geochemistry, International, Soil Sciences, All tags... USGS Science Data Catalog (SDC), aridity, chalcedony, chemistry, chert, deposition, dust, eolian, flocculates, gypsum, loess, microcrystalline, opal, porcellanite, quartz, silica polymorphs, silt, wind, Fewer tags Broad-scale assessment of biophysical features in Colorado: Soil salinity using electrical conductance This dataset “Broad-scale assessment of biophysical features in Colorado: Soil salinity using electrical conductance” presents information extracted from the Natural Resources Conservation Service (NRCS) gridded surface soils geographic database (gSSURGO). Fields retained and presented here include map unit (MU) codes and component (COMP) codes that may be used to reference records in the original, NRCS, data. Soil salinity is typically measured and evaluated based on electrical conductance (EC), and values presented here include the representative value for the map unit component (ECR) and the highest estimated value (ECH). Soils with high salinity can affect the composition of vegetation and can limit production... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Colorado, geoscientificInformation, salinity, soil chemistry, soil sciences Fourmile Canyon Wildfire Longitudinal Profile Data This dataset represents 25 parallel longitudinal profiles that were extracted from terrestrial lidar point clouds taken during six survey periods. The six lidar surveys were conducted between 7 October 2010 and 8 October 2013. Over that time a colluvial hollow eroded into a fluvial channel. The longitudinal profiles show the topography of the colluvial hollow for each survey period. The width of the original colluvial hollow was approximately 1.25 m, and a longitudinal profile was extracted every 5 cm for the entire length of the hollow, resulting in 25 parallel longitudinal profiles. These data can be used to observe the transition of the colluvial hollow to a fluvial channel and furthermore they show the development... Types: Citation; Tags: Fourmile Canyon, Colorado, GHSC, Geologic Hazards Science Center, LHP, LIDAR, All tags... Landslide Hazards Program, Soil Sciences, USGS, USGS Science Data Catalog (SDC), burned watershed, colluvial hollow, earth science, fluvial channel, landslide hazard, soil erosion, wildfire, wildfire hazard, Fewer tags Concentrations of tetrachloroethylene in tree-core and passive soil-gas samples and interpolated tetrachloroethylene soil data at the Vienna Wells site, Maries County, Missouri, 2011-2016 This U.S. Geological Survey (USGS) Data Release contains tree-core, soil-gas, and soil data collected at the Vienna Wells Superfund site in Vienna, Missouri by the U.S. Geological Survey between 2011 and 2016. Concentrations of tetrachloroethylene (PCE) are reported for each sample in each medium. Tree-core sampling was conducted over two days (July 29, 2014 and May 21, 2015). Trees sampled on July 29, 2014 were used to calculate concentration centroids for each tree to compare with concentration centroids in soil samples. Tree 29 was sampled on May 21, 2015 to characterize and model tetrachloroethylene concentrations within a single tree. An interpolated soil surface was created from 1,016 soil samples (see doi:... Tags: Botany, Environmental Health, Hydrogeology, Soil Sciences, Superfund site, All tags... USGS Science Data Catalog (SDC), Water Quality, environment, phytoforensics, vegetation, Fewer tags RestoreNet: seedling treatment and site environmental characteristics data at restoration treatment plots in northern Arizona, USA This dataset is from a restoration field study conducted at seven sites distributed across the southern Colorado Plateau in northern Arizona as part of the RestoreNet dryland restoration field trial network. The data consist of post-experimental restoration treatment (2018-2019) plant density and height measurements along with site precipitation, temperature, and soils data. Plant data were collected through plot monitoring visits distributed throughout the first year following restoration treatments and seeding. Tags: Arizona, Botany, Colorado Plateau, Ecology, Flagstaff, All tags... Forestry, Geography, Information Sciences, Soil Sciences, USGS Science Data Catalog (SDC), air temperature, biogeography, biota, drylands, ecosystem restoration, environmental variation, field experiments, field inventory and monitoring, field methods, geoscientificInformation, measurement, northern Arizona, plant density, plant growth, plant recruitment, post-experimental, post-restoration, precipitation (atmospheric), restoration treatments, seed mixes, seed treatments, seeding, seedling emergence, seedling establishment, seedling recruitment, seedling survival, site environmental characteristics, site environmental data, soil resources, southwestern United States, Fewer tags 2D micromodel studies of pore-throat clogging by pure fine-grained sediments and natural sediments from NGHP-02, offshore India Fine-grained sediments, or “fines,” are nearly ubiquitous in natural sediments, even in the predominantly coarse-grained sediments that host gas hydrates. Fines within these sandy sediments can be mobilized and subsequently clog flow pathways while methane is being extracted from gas hydrate as an energy resource. Using two-dimensional (2D) micromodels to test the conditions in which clogging occurs provides insights for choosing production operation parameters that optimize methane recovery in the field. During methane extraction, several processes can alter the mobility and clogging potential of fines: (1) fluid flow as the formation is depressurized to release methane from gas hydrate, (2) shifting pore-fluid... Categories: Data; Tags: 2D micromodel, Bay of Bengal, Department of Civil and Environmental Engineering, Geophysics, Indian Ocean, All tags... Krishna-Godavari Basin, Laboratory, Louisiana State University, Louisiana State University, Department of Civil and Environmental Engineering, Marine Geology, NGHP-02, NGHP-02-09, NGHP-02-16, Woods Hole Coastal and Marine Science Center, U.S. Geological Survey, bentonite, brine, calcium carbonate, clogging, deionized water, diatoms, earth material properties, fine-grained sediment, gas hydrate resources, geoscientificInformation, illite, image analysis, kaolin, laboratory experiments, mica, natural resource extraction, optical microscopy, permeability, silica silt, soil sciences, Fewer tags Dataset used for estimating catchment-level nitrogen and phosphorus fertilizer use from commercial fertilizer sales data for the Conterminous U.S., 2012 This dataset includes all of the variables that were used in predictive models to estimate nitrogen and phosphorus fertilizer use from commercial fertilizer sales data at the catchment/county level for the Conterminous U.S. for the year 2012. The dataset includes model input at the catchment/county level. A companion USGS Scientific Investigations Report describes the methods and subsequent results of two models developed for estimating elemental nitrogen and phosphorus commercial fertilizer use on agricultural lands for the conterminous US at the catchment/county scale for the year 2012. A companion data release provides catchment-level estimates of nitrogen and phosphorus fertilizer use, for agricultural lands,... Tags: N fertilizers, NPK fertilizers, National Water Quality Program, Phosphorus fertilizers, Soil Sciences, All tags... USGS Science Data Catalog (SDC), Water Quality, conterminous United States, modeling (mathematical), nitrogen, phosphorus, surface water quality, Fewer tags Carbon and Strontium Isotopic Data for Rock, Soil, and Soil Gas from the Big Chino Sub-Basin, Arizona, 2017 and 2018 Dataset includes rock and soil gas carbon and strontium values. Rock samples were collected from outcrop locations as well as from drill cuttings. Rock type associations were made based on the DeWitt and others (2008) geology map. Soil gas samples were collected from 4 inch augered soil core holes completed to different depths at three separate sampling locations. Material at the bottom of the soil core hole was collected and analyzed in addition to soil gas for some samples. The augered soil cores were backfilled with two trowel scoops of material removed from soil core then two scoops of clean silica sand were added to the soil core hole. A stainless steel tube was then added to the hole and 10 more scoops... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geochemistry, Hydrology, Soil Sciences, USGS Science Data Catalog (SDC), Water Quality Historical and 21st century soil temperature and moisture data for drylands of western U.S. and Canada These data represent simulated soil temperature and moisture conditions for current climate, and for future climate represented by all available climate models at two time periods during the 21st century. These data were used to: 1) quantify the direction and magnitude of expected changes in several measures of soil temperature and soil moisture, including the key variables used to distinguish the regimes used in the R and R categories; 2) assess how these changes will impact the geographic distribution of soil temperature and moisture regimes; and 3) explore the implications for using R and R categories for estimating future ecosystem resilience and resistance. Tags: Alberta, Arizona, British Columbia, California, Canada, All tags... Climatology, Colorado, Ecology, Geography, Idaho, Information Sciences, Kansas, Manitoba, Minnesota, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, Saskatchewan, Soil Sciences, South Dakota, Texas, USGS Science Data Catalog (SDC), United States, Utah, Washington, Wyoming, aridification, aridity, big sagebrush ecosystems, biota, cheatgrass, clay loam, climate, climate change, climate models, concentration pathways, drought resistance, droughts, ecological model, ecological transformation, ecosystem resilience, future time periods, historical conditions, resilience, sandy loam, silt loam, soil temperature, soil types, vulnerability, Fewer tags Disturbance characteristics, vegetation and biocrust cover from the northern Great Basin (USA) 2012-2013 Fifteen fires from the Chronosequence dataset (see Knutson et al. 2014) were visited in 2012 and 2013 and surveyed for cover of lichens and mosses. Fires were selected to cover the range of average precipitation for each of three water years following fire, fire severity, time since fire, season of ignition, total acres burned and grazing intensity. Cattle grazing was characterized by distance from water sources for cattle, cow dung density counts and Animal Unit Months from the Rangeland Administration System of the Bureau of Land Management. Fire was characterized by whether or not a site burned, time since fire, the area burned, and an estimated amount of shrub cover consumed by the fire as compared to seemingly... Categories: Data; Tags: Botany, Ecology, Great Basin, Idaho, Land Use Change, All tags... Nevada, Oregon, Soil Sciences, USGS Science Data Catalog (SDC), Utah, biota, botany, community ecology, environment, lichens, mosses, vascular plants, Fewer tags Compilation of Geologic and Seismic Velocity Characteristics at Advanced National Seismic System Strong Motion Accelerometer Sites Near-surface site characteristics are critical for accurately modeling ground motion, which in turn influences seismic hazard analysis and design of critical infrastructure. Currently, there are many strong motion accelerometers within the Advanced National Seismic System (ANSS) that are missing this information. We use a Geographic Information Systems (GIS) based framework to intersect the site coordinates of approximately 5,500 ANSS accelerometers located throughout the United States and its territories with geology and velocity information. We consider: (1) surficial geology from digitized geologic maps (Horton, 2017; Wilson et al., 2015; Sherrod et al., 2007; Bawiec, 1999; Saucedo, 2005; Bedrossian et al., 2012;... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANSS, Alabama, American Samoa, Arizona, Arkansas, All tags... California, Colorado, Connecticut, Delaware, Florida, Geography, Geophysics, Georgia, Guam, Idaho, Illinois, Indiana, Information Sciences, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Remote Sensing, Rhode Island, Seismic site characteristics, Seismology, Soil Sciences, South Carolina, South Dakota, Strong Motion, Structural Geology, Tennesee, Texas, USGS Science Data Catalog (SDC), United States, Utah, Vermont, Virginia, Vs30, Washington, West Virginia, Wisconsin, Wyoming, earthquake seismology, seismic stations, vs30 measurements, vs30 proxy, Fewer tags Pre-fire satellite derived and field calculated functional cover across Great Basin megafires Data includes satellite derived pre-fire functional group cover of annual and perennial herbaceous, shrubs, bareground and litter across four rangeland megafires in the Western US, as well as field estimated invasive annual grass measurements from the 2nd to 3rd years post-fire. Additional landscape and restoration treatment covariates hypothesized to influence post-fire invasive annual grass cover are included. Categories: Data; Tags: Artemisia tridentata, Botany, Bromus tectorum, Ecology, Great Basin, All tags... Idaho, Land Use Change, Nevada, Oregon, Poa secunda, Soil Sciences, USGS Science Data Catalog (SDC), biota, community ecology, ecology, environment, land use and land cover, lichens, mosses, vegetation, Fewer tags Data and software code from two long-term experiments (1996-2011 and 2005-2018) at three sites on the Colorado Plateau of North America These data were compiled to examine how climate change affects biocrust recovery from both physical and climate-induced disturbance. Objective(s) of our study were to uncover the trajectory of biological soil crust communities and soil stability following disturbance and under warming. These data represent biological soil crust surveys under 5 treatments at three sites. These data were collected at three sites: Arches National Park, Canyonlands National Park and Castle Valley. Data collection for a physical disturbance experiment where annual human-trampling occurred at the sites in Arches and Canyonlands began in 1996 and was concluded in 2018. Data collection for a 13-year full-factorial in situ climate manipulation... Tags: 20 point-intercept frames, Arches National Park, Canyonlands National Park, Castle Valley, Climatology, All tags... Ecology, Geography, Information Sciences, PRISM Climate Data, Soil Sciences, USGS Science Data Catalog (SDC), Utah, air temperature, altered precipitation, biocrust recovery, biological soil crusts, biota, climate change, climate manipulation experiment, climate-induced disturbance, effects of climate change, field experiments, field inventory and monitoring, field sampling, field soil aggregate stability kitshuman-trampling, geoscientificInformation, habitat alteration and disturbance, in situ, long-term experiment data, mechanical disturbance, physical disturbance experiment, precipitation (atmospheric), soil sciences, soil stability, surveys, treatmtents, undisturbed control, warming, warming and altered precipitation, Fewer tags Data on soil denitrification potential and physico-chemical characteristics of tidal freshwater forested wetlands in Virginia Denitrification measurements and ecosystem attributes in hummock-hollow microtopography of tidal freshwater forested wetlands along longitudinal riverine positions (upper, middle, and lower tidal river sites, and nearby upstream nontidal forested floodplains) of the adjoining Pamunkey and Mattaponi Rivers, Virginia. Categories: Data; Tags: Ecology, Forested Wetland, Geochemistry, Geomorphology, Mattaponi, All tags... Pamunkey, Riverine Estuary, Soil Sciences, USGS Science Data Catalog (SDC), Virginia, Water Quality, environment, nitrogen, Fewer tags Plant trait and soil moisture data associated with ontogenetic trait shifts - seedlings display high trait variability during early stages of development These tabular data were compiled to document how key plant trait values change during plant development, particularly seedling stages, and in relation to soil moisture. An objective of our study was to answer three main research questions: (1) Do seedling trait values differ across early to late stages of seedling development and do those trajectories vary among plant species and functional types (i.e., forbs vs. grasses)?; (2) Does water availability influence seedling ontogenetic trait variation? and, if so, does this variation affect plant species drought performance?; and (3) Do seedling trait values at early stages of development differ from complied trait database values for species? These data represent key... Tags: Arizona, Botany, Ecology, Flagstaff, Information Sciences, All tags... Northern Arizona University, Research Greenhouse, Soil Sciences, USGS Science Data Catalog (SDC), biological and physical processes, biota, functional types, laboratory experiments, life sciences, ontogeny, organism growth and development, plant development, plant traits, plants (organisms), root dry matter content, root:shoot ratio, roots, seed germination, seed treatments, seeding, seedling development, seedling traits, seeds, soil moisture, specific leaf area, specific root length, vegetation, Fewer tags Soil property and geochronology (137Cs and 210Pb) data (2014) in salt marsh soils of Jamaica Bay Estuary, New York City This dataset contains soil property and geochronology (Cesium-137 and lead-210 dating) data from soil cores collected in August 2014 in salt marshes of Jamaica Bay Estuary, New York City. Categories: Data; Tags: Jamaica Bay, New York City, Soil Sciences, USGS Science Data Catalog (SDC), United States, All tags... oceans, salt marsh, Fewer tags A subset of 2017 Louisiana Coastal Master Plan model output to estimate climate change mitigation potential of Louisiana’s coastal area A subset of the Louisiana's 2017 Coastal Master Plan model output was used to estimate the potential climate mitigation role of Louisiana’s coastal area. Model output of surface water salinity, land/water classification, and area of eight habitats for elapsed years of 6, 11, 16, 26, and 36 were post-processed to estimate habitat areas at years of 2020, 2025, 2030, 2040, and 2050, that align with the Governor of Louisiana’s greenhouse gas reduction targets. In addition, the Louisiana coastal boundary and a static mask of upland and developed area were used to define the coastal area. The modeled habitat areas with literature review of net ecosystem carbon balance fluxes per habitat were used in an analytical framework... Tags: Aquatic Biology, Botany, Climatology, Ecology, Gulf of Mexico, All tags... Land Use Change, Louisiana, Louisiana Coastal, Soil Sciences, USGS Science Data Catalog (SDC), biota, carbon sequestration, coastal ecosystems, coastal processes, coastal submergence, environment, estuary, habitats, inlandWaters, wetlands, Fewer tags RestoreNet subplot data for 21 sites within major dryland ecoregions throughout the southwestern United States, 2018 - 2021 These data were compiled for a networked field-trial restoration experiment (RestoreNet) that spans the southwestern US, including 21 distributed field sites. The objective of our study was to understand the environmental factors and restoration practices (including seed mixes and soil manipulation) that increase plant establishment and survival to ultimate improve restoration outcomes in dryland environments. These data represent point-in-time plant density and height measurements at our field sites at the time of monitoring. These data were collected at 21 arid and semi-arid sites, located throughout Arizona, Utah, New Mexico, and California. These data were collected by USGS Restoration Assessment and Monitoring... Categories: Data; Tags: Arizona, Botany, California, Chihuahuan Desert, Climatology, All tags... Colorado, Colorado Plateau, Ecology, Geography, Information Sciences, Mojave Desert, New Mexico, Soil Sciences, Sonoran Desert, USGS Science Data Catalog (SDC), Utah, arid, atmospheric and climatic processes, biogeography, biota, climate change, climatologyMeteorologyAtmosphere, data release, drylands, ecological modeling, ecological processes, ecological restoration, ecosystem monitoring, environment, environmental conditions, environmental variables, field inventory and monitoring, field sites, geoscientificInformation, grassland ecosystems, growth responses, monitoring, plant density, plant establishment, plant growth, plant height, plant responses, plant survival, plants (organisms), post-restoration, precipitation (atmospheric), remediation, restoration experiment, restoration seeding, restoration treatments, restoration variables, seed mixes, seedling emergence, seedling survival, semi-arid, site characteristics, soil resources, soil texture, southwestern US, spatial environmental variation, temporal change, temporal environmental variation, weedy species, zero-inflated data, Fewer tags Pilot Study of Per- and Polyfluoroalkyl Substances (PFAS) Infiltration to Shallow Groundwater Through Selected Soils in New Hampshire, 2023 In a study conducted by the U.S. Geological Survey (USGS) and the New Hampshire Department of Environmental Services, detectable concentrations of per- and polyfluoroalkyl substances (PFAS) were found in the soil at every site despite targeting locations with no known PFAS sources (Santangelo and others, 2022). The widespread distribution of PFAS concentrations in New Hampshire has since sparked critical interest into understanding whether recharge to groundwater contains significant concentrations of PFAS after infiltration through soils. To address this concern, the USGS implemented a pilot study designed to evaluate whether PFAS infiltrate through shallow soil into shallow groundwater. Five sites were selected... Categories: Data; Tags: Eastern United States, Environmental Health, Hydrology, New Hampshire, Northeast, All tags... PFAS, Soil Sciences, USGS Science Data Catalog (SDC), Water Quality, Water Resources, biota, chemical analysis, groundwater, hydrology, lysimeters, soil, Fewer tags Plant composition, shrub biomass, and soil biogeochemistry from an experimental drought treatment on the Colorado Plateau These data were compiled for a study that investigated the effects of drought seasonality and plant community composition in a dryland ecosystem. In 2015 U.S. Geological Survey ecologists recorded vegetation and soil moisture data in 36 experimental plots which manipulated precipitation in two plant community types. The experiment consisted of three precipitation treatments: control (ambient precipitation), cool-season drought (-66% ambient precipitation November-April), and warm-season drought (-66% ambient precipitation May-October), applied in two plant communities (perennial grasses with or without a large shrub, Ephedra viridis) over a three-year period. These data were collected from 2015 to 2022 near Canyonlands... Categories: Data; Tags: Achnatherum hymenoides, Botany, C3 photosynthesis, C4 photosynthesis, Canyonlands National Park, All tags... Climatology, Colorado Plateau, Ecology, Ephedra viridis, Geography, Indian ricegrass, Information Sciences, Islands of Fertility, James' galleta, Needles District, Pleuraphis jamesii, Soil Sciences, USGS Science Data Catalog (SDC), USGS:6553a618d34ee4b6e05c3e2b, Utah, ambient precipitation, biogeochemical cycling, biogeochemical data, biogeochemistry, biomass, biota, carbon, carbon concentrations, control treatments, cool-season drought treatments, data release, drought seasonality, droughts, dryland ecosystems, ecosystems, experimental plots, experimental seasonal drought, field inventory and monitoring, field measurements, field sampling, geoscientificInformation, interspace cover estimates, mormon tea, nitrogen, nitrogen concentrations, percent cover estimates, perennial grasses, phosphorus, phosphorus concentrations, photosynthesis, plant community composition, plants (organisms), precipitation (atmospheric), precipitation treatments, shrubland ecosystems, soil cores, soil moisture, soil sciences, soil volumetric water content, southeastern Utah, vegetation, warm-season drought treatments, Fewer tags 1 2 3 4 5 ... 16 »