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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Citation (1) Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts Office of the Associate Director for Ecosystems U.S. Geological Survey - ScienceBase Marie-Noele Croteau Jeanne B Jaeschke Elitsa I Peneva-Reed More... Categories Data (5) Tag Types Theme (4) Place (4) Harvest Set (5) USGS Scientific Topic Keyword (3) Tag Schemes USGS Thesaurus (4) None (1) Getty Thesaurus of Geographic names (1) Common geographic areas (1) Geographic Names Information System (1) Biocomplexity thesaurus (1) Common Geographic areas (1) More... View Results as: JSON ATOM CSV

Data acquired in laboratory experiments conducted with the stonefly Zapada sp. and the ephemerellid mayflies Drunella sp. and Ephemerella tibialis to characterize uptake and surface adsorption after short aqueous exposures to uranium, 2017-2019 Little is known about the underlying mechanisms governing uranium (U) bioaccumulation in aquatic insects, especially the influence of surface adsorption on the measured U concentrations (Henry et al. 2020). U.S. Geological Survey scientists are conducting experiments to parameterize conditional rate constants for aqueous U uptake and to quantify desorption of weakly bound U from insect's integument. Henry, Brianna L., Marie-Noële Croteau, David M. Walters, Janet L. Miller, Daniel J. Cain, and Christopher C. Fuller. Uranium bioaccumulation dynamics in the mayfly Neocloeon triangulifer and application to site-specific prediction. Environmental Science & Technology 54, no. 18 (2020): 11313-11321. Categories: Data; Tags: Clark Fork (MT), Deer Creek (CO), Environmental Health, Menlo Park (CA), Stevens Creek (CA), All tags... USGS Science Data Catalog (SDC), bioaccumulation, environment, laboratory experiments, modeling, uranium, Fewer tags Determination of the effect of temperature (Q10) on denitrification rates in sediments collected from a groundwater discharge site in Ashumet Pond on Cape Cod, MA This data release presents results from a laboratory study designed to measure the effect of temperature on denitrification rates in sediments collected from 5- to 30-cm depth below the lake bottom, at a location where groundwater discharges to the lake. Sediment cores were collected June 25, 2014 from the West site (Fishermans Cove) in Ashumet Pond, Cape Cod, MA then shipped to Boulder, CO for laboratory experiments. Groundwater used for these experiments was collected from a well just upgradient of the sediment collection site. Denitrification rates were determined on sediment plus groundwater slurries maintained under anaerobic conditions and employing the acetylene block method. Nitrous oxide concentrations... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: USGS Science Data Catalog (SDC) Cyanotoxin Concentration and Phytoplankton Community Composition Data for Surface Water Samples Collected at Lake Mattamuskeet National Wildlife Refuge, North Carolina during summer 2015 Data release including concentrations of cyanotoxins and phytoplankton community composition data for water samples collected from the Lake Mattamuskeet National Wildlife Refuge in North Carolina during 2015. Categories: Data; Types: Citation; Tags: Cylindrospermopsis raciborskii, Lake Mattamuskeet National Wildlife Refuge, North Carolina, USGS Science Data Catalog (SDC), United States, All tags... cyanobacteria, cyanotoxins, cylindrospermopsins, lake, Fewer tags Aboveground Mangrove Biomass Data Collected from and Species Dominance Maps of Pohnpei, Federated States of Micronesia Aboveground Biomass Data from Pohnpei, Federated States of Micronesia. Plot data includes X and Y location, downed dead wood (DDW) count, mangrove species identification, and site descriptions. Species information was recorded for Bruguiera gymnorhiza, Sonneratia alba, Xylocarpus granatum, Lumnitzera littorea, Rhizophora apiculata, Rhizophora lamarckii, Rhizophora mucronata, Rhizophora stylosa and Ceriops tagal. Mangroves were inventoried for species identification, diameter at breast height (DBH), height, and dead status. Categories: Data; Tags: Biomass, Carbon Sinks, Ecosystem Management, Federated States of Micronesia, Field Inventory and Monitoring, All tags... Forestry, Land Use Change, Mangroves, Pohnpei, USGS Science Data Catalog (SDC), Fewer tags Geochemistry Data from Samples Collected in 2015-2017 to study an OG wastewater spill in Blacktail Creek, North Dakota These metadata sets present the comprehensive geochemical composition of solid and water samples from the site of a 11.4ML (million liters) wastewater spill discovered in January, 2015. Analyses of a pipeline sample (analyses of select analytes), supplied by the North Dakota Department of Health are also included. The spill was near Blacktail Creek, north of Williston, ND. The leak was from a pipeline located approximately 70m from Blacktail Creek. The creek flows 17km before entering the Little Muddy River, a tributary to the Missouri River. The study included samples collected in waters upstream and downstream from Blacktail Creek in February and June 2015, June 2016, and June 2017. These data sets include field... Categories: Data; Tags: Bakken, Blacktail Creek, Little Muddy, NVDOC, North Dakota, All tags... USGS Science Data Catalog (SDC), Williams, Williston Basin, ammonium, anions, barium, brine spills, cations, chemical analysis, chromatography, environment, geochemistry, major ions, none, nutrient content (water), oxygen content (water), oxygen isotope analysis, radium, radium isotopes, salinity, semi-volatile hydrocarbons, strontium, strontium isotopes, surface water quality, trace elements, unconventional oil and gas production, water pH, water properties, water temperature, Fewer tags