Filters: Tags: biogeochemical cycling (X) > partyWithName: U.S. Geological Survey (X)

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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 CO2 concentrations and microbial biomass data derived from incubation experiments on soils collected at Arches National Park in 2017 and 2018 These data were compiled to improve our understanding of how water, carbon (C), nitrogen (N), and phosphorus (P) interact to regulate below ground carbon cycling. Objective(s) of our study were to evaluate how soil heterotrophic carbon cycling responded to inputs of water, C, N, and P individually and interactively on the Colorado Plateau. These data represent soil microbial and CO2 respiration responses to amendments of carbon, nitrogen, phosphorous, and water. Soils were collected at a study site located in Arches National Park in southeastern Utah on 14 August 2017 and again on 17 July 2018 from the upper 10 cm of the soil profile in open spaces among plant canopies after the biological soil crust layer (< 1... Categories: Data; Tags: Arches National Park, Botany, CO2 respiration, Colorado Plateau, Ecology, All tags... Geography, Information Sciences, Moab, Soil Sciences, USGS Science Data Catalog (SDC), Utah, biogeochemical cycling, biological soil crusts, biota, carbon, carbon cycling, carbon dioxide, carbon flux, climate change, data release, dryland ecosystem, geoscientificInformation, heterotrophic soil respiration, laboratory experiments, microbial biomass, nitrogen, nutrients, phosphorus, resource limitation, soil efflux, soil incubation experiments, soil profile, soil resources, soil respiration, southeastern Utah, stoichiometry, terrestrial ecosystems, water, Fewer tags Vertical chemical profiles collected across haloclines in the water column of the Ox Bel Ha cave network within the coastal aquifer of the Yucatan Peninsula in January 2015 and January 2016 Natural cave passages penetrating a coastal aquifer in the Yucatan Peninsula (Mexico) were accessed to test the hypothesis that chemoclines associated with salinity gradients (haloclines) within the flooded cave networks of the karst subterranean estuary are sites of methane oxidation. Two field trips were carried out to the fully-submerged cave system located 6.6 km inland from the coastline in January 2015 and January 2016. Vertical chemical profiles across the water column haloclines were obtained using the OctoPiPi (OPP), a high-resolution water sampler built by the U.S. Geological Survey (USGS). The sampling efforts resulted in cm-scale profiles of major ions (e.g., chloride and sulfate), as well as concentrations... Categories: Data; Tags: Cenote Bang, Ecology, Geochemistry, Hydrology, Mexico, All tags... Ox Bel Ha Cave System, Quintana Roo, U.S. Geological Survey, USGS, Yucatan Peninsula, anchialine ecosystem, aquatic ecosystem, biogeochemical cycling, biogeochemical cycling, carbon cycling, carbon isotope analysis, cave, cenote, chemical records, coastal aquifer, coastal ecosystems, ecosystem function, environment, environment, estuarine ecosystems, estuarine mixing, field inventory and monitoring, freshwater ecosystems, geochemical data, geochemistry, groundwater, hydrogeology, hydrologic records, hydrology, inland waters, inlandWaters, karst, salinity, subterranean estuary, Fewer tags Chemical and Stable Isotope Data for Discrete Water Samples Collected in the Northern Sacramento-San Joaquin Delta, 2011-2012 This data set consists of chemical and stable isotope data obtained through the analysis of discrete water samples collected from 14 fixed sampling locations in the northern Sacramento-San Joaquin Delta at roughly monthly intervals between April 2011 and November 2012. Categories: Data; Tags: Cache Slough, Lindsey Slough, Miner Slough, Prospect Slough, Sacramento River, All tags... Sacramento San Joaquin Delta, Steamboat Slough, Toe Drain, USGS Science Data Catalog (SDC), biogeochemical cycling, datasets, light stable isotope analysis, nutrient content (water), water quality, Fewer tags Geochemical Data Supporting Analysis of Fate and Transport of Nitrogen in the Nearshore Groundwater and Subterranean Estuary near East Falmouth, Massachusetts, 2015-2016 Geochemical data were obtained to investigate the fate and transport of nitrogen in a subterranean estuary near East Falmouth, Massachusetts. The goal of this investigation was to assess nitrogen attenuation in the aquifer under the Eel River Estuary and the adjacent peninsula that was densely populated with residences having septic systems and legacy cesspool inputs of inorganic nitrogen. This estuary is one of many small embayments on Cape Cod where nutrient enrichment can lead to eutrophication and is a major concern for water-quality impairment. Groundwater water-quality data were collected from 3 transects from a total of 27 locations that were sampled between November 2015 and October 2016. Samples were... Categories: Data; Tags: Cape Cod, Massachusetts, Eel River, Massachusetts, Sea Coast Shores, East Falmouth, Massachusetts, USGS Science Data Catalog (SDC), Water Quality, All tags... biogeochemical cycling, geochemical processes, groundwater flow, groundwater level, groundwater quality, nutrient cycling, Fewer tags Laboratory Incubation results from 2015 for bacterial cell counts, carbon use efficiency, growth efficiency, and dissolved organic matter chemistry from four glacier outflows and four rock glacier outflows in Colorado Bacterial Data include results of incubations of lakewater bacteria with dissolved organic matter extracted from Colorado glacier or rock glacier outflows in 2015. Cells were counted pre- and post- incubations. The “Counts” tab is the number of cells counted in each view of the microscope using the acridine orange method. “C Calculations” tab is the calculation of carbon as bacterial biomass from cell counts. ”Change in cell counts” is the difference in the number of bacterial cells from the pre-incubation microbial culture and in each assay bottle after the biological oxygen demand incubation. The third tab, “Carbon use efficiency” is calculated as the amount of DOM from oxygen demand assays converted to microbial... Tags: Colorado, Indian Peaks, Rocky Mountain, USGS Science Data Catalog (SDC), bacteria, All tags... biogeochemical cycling, biota, carbon cycling, dissolved organic compounds, snow and ice cover, Fewer tags Modeled Stream Metabolism in Boulder Creek near Boulder, CO (2016 - 2018) Note: This data release has been deprecated. Please see new data release here: https://doi.org/10.5066/P9A4FVZ4. The data presented here was collected adjacent to USGS stream gage 06730200 and includes both observed and modeled values. Dissolved oxygen, dissolved carbon dioxide, stream depth, water temperature, and light intensity were collected via passive water quality sensors. Modeled values include gross primary production, ecosystem respiration, net ecosystem production, reaeration, and light (when observed values were unavailable). Modeled values were obtained through streamMetabolizer, a USGS-sponsored R-package for estimating rates of stream metabolism. Estimates for carbon dioxide flux utilized both modeled... Categories: Data; Tags: Bayesian Model, Boulder County, Boulder Creek, Colorado, Ecology, All tags... USGS Science Data Catalog (SDC), Water Quality, biogeochemical cycling, carbon cycling, carbon dioxide, carbon dioxide flux, dissolved oxygen, ecosystem respiration, freshwater ecosystems, gross primary production, high resolution, in-situ, mathematical modeling, net ecosystem production, reaeration, seasonal variation, snowmelt, stream metabolism, streamMetabolizer, urban stream, Fewer tags Growth of cultured Picocystis strain ML in the presence of arsenic, and occurrence of arsenolipids in these Picocystis as well as biota and sediment from Mono Lake, California Mono Lake is a hypersaline soda lake rich in dissolved inorganic arsenic with its primary production currently dominated by Picocystis str. ML. We set out to determine if this picoplankter could metabolize inorganic arsenic, and in doing so form unusual arsenolipids (e.g., methylated arsinoyl ribosides) as reported in other saline ecosystems and by halophilic algae. We cultivated Picocystis str. ML on an inorganic seawater-based medium with either low (37 µM) or high (1,000 µM) phosphate in the presence of arsenite (~0.4 mM), arsenate (~0.8 mM), or without arsenic additions. Categories: Data; Tags: Environmental Health, Geochemistry, Mono Lake, Picocystis, USGS Science Data Catalog (SDC), All tags... arsenic, arsenolipids, biochemistry, biogeochemical cycling, biota, cell biology, chromatography, geochemistry, liquid chromatography, mass spectroscopy, microbiology, plankton, Fewer tags Per- and polyfluoroalkyl substances (PFAS) and volatile organic compounds measured in laboratory microcosm experiments with soil from Fort Drum, New York Anaerobic microcosm experiments were conducted in April-May 2018 with PFAS-contaminated soil from a U.S. Army installation (Fort Drum, New York) and simulated groundwater. All microcosms, except for a live sediment control, were amended with perfluorooctanesulfonate (PFOS), perfluorooctanoate (PFOA), and 6:2 fluorotelomer sulfonate (6:2 FtS). Replicate treatments were prepared with and without bioaugmentation with the WBC-2 dehalogenating culture and with and without addition of chlorinated volatile organic compounds (1,1,2,2-tetrachloroethane and trichloroethylene). Two additional treatments were prepared containing granular activated carbon. All microcosms were prepared in duplicate and sacrificed for sampling.... Categories: Data; Tags: Environmental Health, Fort Drum, Genetics, Jefferson County, New York, All tags... New York, PFAS, USGS Science Data Catalog (SDC), Water Quality, bacteria, bacteria, bacterial digestion of pollutants, biodegradation, biogeochemical cycling, biological laboratory methods, environment, laboratory experiments, reductive dehalogenation, sediment-pollutant interaction, Fewer tags Water quality and gas fluxes of Interior Alaska (2014-2018) 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... Categories: Data; Types: Data, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alaska, Boot Lake, CH4, CO2, CO2 Bubble Trap, All tags... Canvasback Lake, Carbon, DIC, DOC, Dalton Highway, Datasets/Database, Interior Alaska, Steese Highway, USGS Science Data Catalog (SDC), Water Quality, Water Resources, Yukon Flats, alkalinity, ammonium, anion, biogeochemical cycling, calcium, carbon dioxide, carbon flux, cation, chloride, deuterium, dissolved inorganic carbon, dissolved organic carbon, greenhouse gas flux, lake chemistry, magnesium, methane, nitrate, nitrogen, sodium, specific conductance, stream chemistry, sulfate, total dissolved nitrogen, total iron, water chemistry, water isotopes, water quality, water resources, Fewer tags Nearshore groundwater seepage and geochemical data measured in 2015 at Guinea Creek, Rehoboth Bay, Delaware Assessment of biogeochemical processes and transformations at the aquifer-estuary interface and measurement of the chemical flux from submarine groundwater discharge (SGD) zones to coastal water bodies are critical for evaluating ecosystem service, geochemical budgets, and eutrophication status. The U.S. Geological Survey and the University of Delaware measured rates of SGD and concentrations of dissolved constituents, including nitrogen species, from recirculating ultrasonic and manual seepage meters, and in nearshore groundwater, on the southern shore of Guinea Creek, an estuarine tributary of Rehoboth Bay, in Millsboro, Delaware, in June, August, and October of 2015. A novel oxygen- and light-regulated seepage... Categories: Data; Tags: Delaware, Delmarva Peninsula, Geochemistry, Guinea Creek, Millsboro, All tags... Rehoboth Bay, Soil Sciences, United States, Water Quality, biogeochemical cycling, dissolved organic carbon, dissolved oxygen, environment, eutrophication, geochemistry, geoscientificInformation, groundwater chemistry, groundwater seepage, nitrogen, salinity, trace elements, water chemistry, water quality, Fewer tags Plant, soil, and microbial characteristics of marsh collapse in Mississippi River Deltaic wetlands Site, field, and soil data collected from 14 sites along a chronosequence of wetland submergence on 15 – 17 October 2019 in a Louisiana salt marsh in Barataria Basin, part of the Mississippi River Deltaic Plain, along the northern Gulf of Mexico coast. Categories: Data; Tags: Botany, Flora, Louisiana Coastal, Microbial Communities, Soil Sciences, All tags... USGS Science Data Catalog (SDC), Water Quality, biogeochemical cycling, coastal submergence, marsh, soil, wetland ecosystems, Fewer tags Ecological property data and experimental lab incubation results from a long-term nitrogen deposition simulation experiment in three semi-arid grasslands, Arches National Park, Utah, USA, 2013-2019 These data were compiled to understand the responses of dryland ecosystem properties to long-term simulated atmospheric nitrogen deposition. Objective(s) of our study were to uncover any changes in soil biogeochemistry and ecosystem properties to long-term nitrogen amendments. These data represent ecosystem property data compiled over the nine-year history of a nitrogen deposition simulation experiment. These data were collected from three sites representing a gradient of soil texture in Arches National Park. Data collection began in 2013 and continued through 2019, though metrics were collected at a range of intervals within that timeframe. These data were collected by U.S. Geological Survey field technicians using... Tags: Arches National Park, Colorado Plateau, Ecology, Geochemistry, Geography, All tags... Information Sciences, Resin, Short Term, Soil Sciences, USGS Science Data Catalog (SDC), Utah, arid ecosystems, atmospheric nitrogen deposition, biochemistry, biogeochemical cycling, carbon dioxide, data release, drylands, ecosystem property data, effects of climate change, fertilization experiment, field experiments, geoscientificInformation, global change, incubation microbial biomass, incubation respiration, laboratory experiments, long term, multiple resource limitation, nitrogen, nitrogen cycling, soil biogeochemistry, soil chemistry, soil moisture, soil texture, stoichiometry, terrestrial ecosystems, Fewer tags Modeled Stream Metabolism in Boulder Creek near Boulder, CO (2016 - 2018) This data release is associated with a journal article titled, "Aquatic-Terrestrial Linkages Control Metabolism and Carbon Dynamics in a Mid-sized, Urban Stream Influenced by Snowmelt." The data were collected adjacent to USGS stream gage 06730200 and include observed and modeled values. Dissolved oxygen, dissolved carbon dioxide, stream depth, water temperature, and light intensity were collected via passive water quality sensors. Modeled values include gross primary production, ecosystem respiration, net ecosystem production, reaeration, and light (when observed values were unavailable). Modeled values were obtained through streamMetabolizer, a USGS-sponsored R-package for estimating rates of stream metabolism.... Categories: Data; Tags: Bayesian Model, Boulder County, Boulder Creek, Colorado, USGS Science Data Catalog (SDC), All tags... biogeochemical cycling, carbon cycling, carbon dioxide, carbon dioxide flux, dissolved oxygen, ecosystem respiration, freshwater ecosystems, gross primary production, high resolution, in-situ, mathematical modeling, net ecosystem production, reaeration, seasonal variation, snowmelt, stream metabolism, streamMetabolizer, urban stream, Fewer tags Great Lakes Sediment Surveillance Program: Mercury Concentrations and Mercury Stable Isotopes in Sediments of the Laurentian Great Lakes As part of the larger Great Lakes Sediment Surveillance Program (GLSSP), the U.S. Geological Survey Mercury Research Laboratory (MRL) partnered with the U.S. Environmental Protection Agency and the University of Minnesota-Duluth to assess contaminant concentrations within surface sediments and sediment cores from the Laurentian Great Lakes. Sediments were assessed for mercury concentrations and mercury stable isotopes to examine spatial trends and sources of mercury within the lakes. In 2021, 30 sites were surveyed in Lake Superior. Mercury concentrations within Lake Superior surface sediment ranged from 1.1 to 161.2 ng/g. Mercury isotopes displayed a range in δ202Hg from -0.12 to -1.74 ‰ with measurable Δ199Hg... Categories: Data; Tags: Environmental Health, Great Lakes, Lake Huron, Lake Ontario, Lake Superior, All tags... USGS Science Data Catalog (SDC), biogeochemical cycling, isotopic analysis, limnology, mercury, sediment, Fewer tags Field and Laboratory data of pipe scale forming in acid mine drainage pipelines at Iron Mountain and Leviathan Mines, California Pipelines carrying acid mine drainage at Iron Mountain and Leviathan Mines (CA, USA) develop pipe scale, a precipitate that forms inside the pipelines. The U.S. Geological Survey is studying the composition of the pipe scale and the acid mine drainage water flowing through the pipeline through field samples and laboratory experimentation. This data release provides the data from the studies of the pipelines from 2012-2015 as a data compendium to a journal publication, and includes (1) water chemistry of the acid mine drainage; (2) mineralogy of pipe scale (X-ray diffraction and chemical extractions); and (3) laboratory experiment results. Categories: Data; Tags: Alpine County, California, Geochemistry, Iron Mountain Mine, Leviathan Mine, All tags... Mine drainage, Mineralogy, Mineralogy, Pipe scale, Pipelines, Remediation, Shasta County, USGS Science Data Catalog (SDC), Water Quality, X-ray diffraction, biogeochemical cycling, geochemical processes, oxidation and reduction, water chemistry, Fewer tags Temporal hydrologic and chemical records from the Ox Bel Ha cave network within the coastal aquifer of the Yucatan Peninsula, from January 2015 to January 2016 Natural cave passages penetrating a coastal aquifer in the Yucatan Peninsula (Mexico) were accessed to investigate how regional meteorology and hydrology control methane dynamics in karst subterranean estuaries. Three field trips were carried out in January 2015, June 2015, and January 2016 to obtain year-long high-resolution temporal records of water chemistry and environmental parameters below and above the surface at a site (Cenote Bang) within the Ox Bel Ha cave network. These efforts resulted in chemical records of dissolved methane concentrations and its stable carbon isotopic content and major ion concentrations (i.e., chloride and sulfate) in approximately 2.5-day resolution from January 2015 to January... Categories: Data; Tags: Aquatic Biology, Cenote Bang, Ecology, Geochemistry, Hydrogeology, All tags... Mexico, Ox Bel Ha Cave System, Quintana Roo, U.S. Geological Survey, USGS, Water Resources, Yucatan Peninsula, anchialine ecosystem, aquatic ecosystem, biogeochemical cycling, biogeochemical cycling, carbon cycling, carbon isotope analysis, cave, cenote, chemical records, coastal aquifer, coastal ecosystems, ecosystem function, environment, environment, estuarine ecosystems, estuarine mixing, freshwater ecosystems, geochemical data, geochemistry, groundwater, groundwater flow, hydrogeology, hydrologic records, hydrology, inland waters, inland waters, karst, precipitation, salinity, subterranean estuary, temporal records, Fewer tags Sonde data to characterize physical and chemical water column properties of flooded caves (Ox Bel Ha and Cenote Crustacea) within the coastal aquifer of the Yucatan Peninsula, Quintana Roo, from December 2013 to January 2015 Natural cave passages penetrating coastal aquifers in the Yucatan Peninsula (Quintana Roo, Mexico) were accessed to investigate how regional meteorology and hydrology control dissolved organic carbon and methane dynamics in karst subterranean estuaries, the region of aquifers where fresh and saline waters mix. Three field trips were carried out in December 2013, August 2014, and January 2015 to obtain 1) physicochemical and 2) geochemical data from the water column and 3) temporal records of water chemistry and hydrological parameters below and above the surface at three sites within the Ox Bel Ha cave (Cenote Jailhouse, Cenote Naach Wennen Ha, and Cenote Odyssey) and another cave (Cenote Crustacea). These efforts... Categories: Data; Tags: Cenote Crustacea, Cenote Jailhouse, Cenote Naach Wennen Ha, Cenote Odyssey, Mexico, All tags... Ox Bel Ha Cave System, Quintana Roo, Mexico, Tulum, Yucatan Peninsula, anchialine, biogeochemical cycling, biogeochemical cycling, cave, chemical profile, chemical records, coastal aquifer, environment, geochemical data, geochemistry, geochemistry, hydrologic records, inland waters, inlandWaters, karst, karst, limnology, ocean sciences, physicochemical profile, sonde data, subterranean estuary, temporal records, Fewer tags Hydrological and chemical records from the flooded Ox Bel Ha cave system in the Yucatan Peninsula, Quintana Roo, from August 2014 to January 2015 Natural cave passages penetrating coastal aquifers in the Yucatan Peninsula (Quintana Roo, Mexico) were accessed to investigate how regional meteorology and hydrology control dissolved organic carbon and methane dynamics in karst subterranean estuaries, the region of aquifers where fresh and saline waters mix. Three field trips were carried out in December 2013, August 2014, and January 2015 to obtain 1) physicochemical and 2) geochemical data from the water column and 3) temporal records of water chemistry and hydrological parameters below and above the surface at three sites within the Ox Bel Ha cave (Cenote Jailhouse, Cenote Naach Wennen Ha, and Cenote Odyssey) and another cave (Cenote Crustacea). These efforts... Categories: Data; Tags: Cenote Naach Wennen Ha, Cenote Odyssey, Mexico, Ox Bel Ha Cave System, Quintana Roo, All tags... Tulum, Yucatan Peninsula, anchialine ecosystem, aquatic ecosystem, aquatic ecosystems, biogeochemical cycling, biogeochemical cycling, cave, chemical profile, chemical records, coastal aquifer, ecosystem function, ecosystem functions, environment, environment, geochemical data, geochemistry, geochemistry, hydrologic records, inland waters, inlandWaters, karst, karst, limnology, ocean sciences, physicochemical profile, subterranean estuary, temporal records, Fewer tags MCHM Degradation Data Release This USGS data release includes all the data presented in peer-reviewed publication entitled "Degradation of MCHM (4-methylcyclohexanemethanol) in Sediments from Elk River, West Virginia". We conducted experiments on crude MCHM to examine photooxidation or biodegradation. We also assessed the potential of sediments to serve as a long-term source of MCHM and well as the potential for native microbial communities to catalyze the anaerobic breakdown of MCHM. We developed a quantitative method to measure the 2 isomers (cis- and trans-) of 4-MCHM, using solid phase micro-extraction (SPME), which had a minimum detection limit of 5 µg/L. The data release shows that the abiotic degradation experiments showed no evidence... Categories: Data; Tags: Charleston, West Virginia, Elk River, West Virginia, Environmental Health, USGS Science Data Catalog (SDC), Water Quality, All tags... biodegradation, biogeochemical cycling, chromatography, geochemical processes, human impacts, industrial pollution, sediment geochemistry, water quality, Fewer tags 1 2 »