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This data set presents attributes of floodplain ecosystem characteristics including floodplain soil denitrification, floodplain soil biogeochemistry, floodplain vegetation, floodplain sedimentation, floodplain and channel morphometry, stream discharge and water quality, floodplain climate, floodplain physiographic region, and catchment land cover. Attributes are associated with 18 floodplains of the Chesapeake Bay watershed. For many of these attributes, mean values are summaries of multiple measurements made within each floodplain site.
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The RVCAT database contains data that have been collected on various vessel operations on the Great Lakes and select connecting waterways. This section of Reference Tables specifically handles repetitive or standardized information that is called upon in the main tables of the RVCAT database. Reference tables are used in database design in order to standardize often used values and to make the data file efficient. All of the terms defined in the reference tables have been determined by the United States Geological Survey, Great Lakes Science Center and it’s partners.
Categories: Data; Types: Citation; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags...
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Arsenic concentrations from 20,450 domestic wells in the U.S. were used to develop a logistic regression model of the probability of having arsenic > 10 µg/L (“high arsenic”), which is presented at the county, state, and national scales. Variables representing geologic sources, geochemical, hydrologic, and physical features were among the significant predictors of high arsenic. For U.S. Census blocks, the mean probability of arsenic > 10 µg/L was multiplied by the population using domestic wells to estimate the potential high-arsenic domestic-well population. Approximately 44.1 M people in the U.S. use water from domestic wells. The population in the conterminous U.S. using water from domestic wells with predicted...
This dataset consists of measurements of the digestive gland in the freshwater snail Lymnaea stagnalis orally exposed to uranium. The objective of the study was to assess the morphological effects of uranium on the snail digestive gland by light microscopy. Laboratory-cultured L stagnalis were exposed to either synthetic or natural solid phases of uranium and a subset (6 controls and 6 exposed) were euthanized and fixed in 10% neutral buffered formalin for histopathological assessment. Slides were processed and stained with hematoxalin and eosin as per standard procedure (Luna 1968). The size of each sample, the length and width of digestive gland tubules (5 random glands per sample) and height of digestive cells...
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This data set includes site characteristics and fish catch rate information for gill nets deployed in Lake Erie. Catches of walleye (Sander vitreus), clupeidae, and moronidae are tallied by mesh size and net type at each deployment site. More detailed information about net construction and methods is provided in the accompanying Fisheries Research article. Kraus, Richard T., Vandergoot, Christopher S., Kocovsky, Patrick M., Rogers, Mark W., Cook, H. Andrew, Brenden, Travis O. Fisheries Research. 2017. Reconciling catch differences from multiple fishery independent gill net surveys. 188: 17-22. DOI: 10.1016/j.fishres.2016.12.004.
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Approximately 44.1 million people (about 14 percent of the U.S. population) rely on domestic wells as their source of drinking water. Unlike community water systems, which are regulated by the Safe Drinking Water Act, there is no comprehensive national program for testing domestic well water to ensure that is it safe to drink. There are many activities, e.g., resource extraction, climate change-induced drought, and changes in land use patterns that could potentially affect the quality of the ground water source for domestic wells. The Health Studies Branch (HSB) of the National Center for Environmental Health, Centers for Disease Control and Prevention, created a Clean Water for Health Program to help address domestic...
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Land use was quantified within a 4-km radius around 36 apiaries in North Dakota, South Dakota, and Minnesota over two years, 2015-16 and 2016-17. The area (hectares) of Ag (corn, soy, small grains), Grass (pasture, grassland, fallow land, wildflowers, shrub land, and hay land), Wetlands (herbaceous and woody), and Bee crops (alfalfa, canola, sunflower) were quantified around each apiary in each year. Within each apiary, the average change in frames of adult bees among all colonies from June to September was calculated. Additionally, the average September Varroa mite infestation rate, the average adult population size during almond pollination, the count of colonies exhibiting queen events in September, and the count...
Laboratory bioassays were conducted between 2014-2016 at Wayne State University in cooperation with USGS to determine if different species of cyanobacteria influence quagga mussel spawning and fertilization success. The data describes the algal cultures tested and their density/concentration, the number of individuals tested, and the spawning and fertilization success of quagga mussels exposed to the cyanobacteria and those that were not (control).
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A breach in the White Dam has been proposed to facilitate fish passage. As a Technical Assistance project, the U.S. Geological Survey provided toxicity assessments of sediment samples collected by USEPA personnel. These data describe water-quality conditions in exposure chambers during 42-d sediment exposures using the freshwater amphipod, Hyalella azteca.
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Data contain zero-crossing, frequency acoustic detector locations, date to hour, species of bats recorded and identified and various wind and precipitation values associated with either day or hour for ridges,sideslopes and valleys at 5 locations in western Virginia's Appalachian Mountains.
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Soil gas methane and combustible gas concentrations collected from oil and gas well pad locations in Utah. Soil gas samples were measured on site and/or collected for later analysis as described in supporting documentation. Multiple sample locations around well head and depths within the soil profile are available for select sites. Supporting documents provide information of sample collection protocol and data quality assurance.
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Big Flat, Big Indian North, Big Indian South, Big Valley, Bluebell, All tags...
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The data describe the number, density, date of collection, and exact collection location of fish eggs (from multiple species) collected in the St. Clair and Detroit Rivers from 2005-2016.
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These data were compiled to support effective conservation for species within Astragalus sect. Humillimi. Two species, A. cremnophylax var. cremnophylax and A. humillimus are federally listed as endangered taxa. The data provided herein were used to resolve the relationaships among taxa, the population structure within taxa, and genetic diversity within taxa. The data are provided in a STRUCTURE-formatted file that includes taxa, individuals, sampling localities, and the genotype scores per individual for 690 Amplified Fragment Length Polymorphisms (AFLPs).
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All benthos data represented here expand upon vessel operations (OP table) data, all of which are collected by the United States Geological Survey, Great Lakes Science Center and it’s partners. The Benthos Tables contain data collected from the research vessel deploying various gear used for benthos data collection. The database uses sample_type to indicate the gear deployed. The tables relating to Benthos are: Benthos_Comments.csv, Benthos_Ponar.csv, and Benthos_LF
Categories: Data; Types: Citation; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags...
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Approximately 43 million people (about 14 percent of the U.S. population) rely on domestic wells as their source of drinking water. Unlike community water systems, which are regulated by the Safe Drinking Water Act, there is no comprehensive national program to ensure that the water is tested to ensure that is it safe to drink. A study published in 2009 from the National Water-Quality Assessment Program of the U.S. Geological Survey that assessed water-quality conditions from 2,100 domestic wells within 48 states reported that more than one in five (23 percent) of the sampled wells contained one or more contaminants at a concentration greater than a human-health benchmark. In addition, there are many activities,...
This dataset describes histopathological changes in liver, kidney, gonad, and spleen of zebra finches exposed to 15mg/kg, 30mg/kg or 60mg/kg clothianidin (CTD) in water or on millet seed. The goal of the project is to develop a subacute neonicotinoid toxicity model using zebra finches as a model passerine. We have completed two acute toxicity trials using CTD insecticide. Based on these studies, we estimate the no observable effect level (NOAEL) and the lowest observable effect level (LOAEL) for CTD in zebra finches to be 15 and 30 mg/kg body weight, respectively, and the concentration producing a toxic effect in 50% of treated birds (EC50) to be approximately 150 mg/kg. We next exposed birds for 7 days to CTD in...
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All mensuration data represented here expand upon vessel operations (OP table) data, all of which are collected by the United States Geological Survey, Great Lakes Science Center and its partners. The Mensuration Tables contain data collected from the research vessel deploying various gear used for mensuration data collection. The database uses sample_type to indicate the gear deployed. The tables relating to Mensuration are: Mensuration.csv, MS_head_rope_depth.csv, MS_FOOT_ROPE_DEPTH, MS_Primary.csv, MS_Temperature.csv, and MS_Wingspread.csv
Categories: Data; Types: Citation; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags...
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This data set presents ecosystem geomorphic and soil attributes, sediment and nutrient loading rates, and rates of nutrient biogeochemistry processes, including denitrification and N and P mineralization, in floodplains of urban restored streams. The restored streams were located in the Charlotte, North Carolina, metropolitan area and were studied from 2012-2013.
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These data have been collected on various vessel operations on the Great Lakes and select connecting waterways. This vessel operations data set is part of and connected to a larger database of Great Lakes research that includes trawl and gillnet catch data, sample information of fish species caught, as well as effort applied, operation conditions, and location details. The larger database also contains data on hydroacoustics, ichthyoplankton, zooplankton, zebra mussel, and benthos samples collected. Multiple operations were conducted on all Great Lakes each year (1958-2016) beginning in early spring and ending in late fall. Each vessel operation was completed for a specific purpose, or target mission, which are...
Categories: Data; Types: Citation; Tags: Alewife, Bathythermograph, Benthos, Bloater, Cisco, All tags...
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Real-time, high frequency (1-second sample interval) GPS location, water quality, and water isotope (δ2H, δ18O) data was collected in the Cache Slough Complex (CSC), located in the northern San Francisco Bay Delta (SFBD). Data was collected on 10/01/2014 for an approximate 4-hour period (10:30 – 14:30 h PST) while underway on the R/V Mary Landsteiner, a 26-foot USGS vessel. Sample water was pumped continuously through a pickup tube, passed through a 178 micron pre-filter, a de-bubbler, and diverted through a 0.2 micron filter and an unfiltered flow path to water quality instrumentation. The real-time data were recorded using a Campbell Scientific CR-6 data logger. Water isotopes (δ2H, δ18O) were logged to a separate...


map background search result map search result map Great Lakes Research Vessel Operations 1958-2017: OP. (ver. 2.0, March 2018) Great Lakes Research Vessel Operations 1958-2017: Mensuration. (ver. 2.0, March 2018) Great Lakes Research Vessel Operations 1958-2017: Reference. (ver. 2.0, March 2018) Great Lakes Research Vessel Operations 1958-2017: Benthos Ponar. (ver. 2.0, March 2018) Fish eggs collected in the St. Clair and Detroit rivers, 2005-2016 Gill net catch data in Lake Erie, 2010-2013 High-speed mapping of water isotopes and residence time in Cache Slough Complex, San Francisco Bay Delta, CA Toxicity Assessment of Sediments Collected Upstream and Downstream of the White Dam in Clarke County, Georgia Data supporting the study of increasing floodplain connectivity through urban stream restoration increases nutrient and sediment retention, 2012-2013 Variables used as input to a logistic regression model to estimate high-arsenic domestic-well population in the conterminous United States, 1970 through 2013 Probability of arsenic concentrations greater than 10 micrograms per liter in groundwater used by domestic wells in the United States County level domestic well population with arsenic greater than 10 micrograms per liter based on probability estimates for the conterminous U.S. Soil Methane and Combustible Gas Concentrations from Oil-Gas Well Pads in Utah, U.S.A. Data on denitrification and ecological characteristics of nontidal floodplains, Chesapeake Bay watershed, USA, 2013-2016 Spatio-temporally decoupled land use influences honey bee health and pollination service delivery dataset Genetic analyses of Astragalus sect. Humillimi data in the southwest USA Activity patterns in regional and long-distance migrant bat species during the fall and spring along ridgelines in the central Appalachians, 2015-2017 High-speed mapping of water isotopes and residence time in Cache Slough Complex, San Francisco Bay Delta, CA Toxicity Assessment of Sediments Collected Upstream and Downstream of the White Dam in Clarke County, Georgia Fish eggs collected in the St. Clair and Detroit rivers, 2005-2016 Gill net catch data in Lake Erie, 2010-2013 Data on denitrification and ecological characteristics of nontidal floodplains, Chesapeake Bay watershed, USA, 2013-2016 Activity patterns in regional and long-distance migrant bat species during the fall and spring along ridgelines in the central Appalachians, 2015-2017 Spatio-temporally decoupled land use influences honey bee health and pollination service delivery dataset Soil Methane and Combustible Gas Concentrations from Oil-Gas Well Pads in Utah, U.S.A. Genetic analyses of Astragalus sect. Humillimi data in the southwest USA Great Lakes Research Vessel Operations 1958-2017: OP. (ver. 2.0, March 2018) Great Lakes Research Vessel Operations 1958-2017: Mensuration. (ver. 2.0, March 2018) Great Lakes Research Vessel Operations 1958-2017: Reference. (ver. 2.0, March 2018) Great Lakes Research Vessel Operations 1958-2017: Benthos Ponar. (ver. 2.0, March 2018) Variables used as input to a logistic regression model to estimate high-arsenic domestic-well population in the conterminous United States, 1970 through 2013 Probability of arsenic concentrations greater than 10 micrograms per liter in groundwater used by domestic wells in the United States County level domestic well population with arsenic greater than 10 micrograms per liter based on probability estimates for the conterminous U.S.