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Location Folder Show Tree ROOT _ScienceBase Catalog __National Water-Quality Assessment Project ___Regional Stream Quality Assessment Bifenthrin causes trophic cascade and altered insect emergences in mesocosms: implications for small streams Geospatial Database of the Study Boundaries, Sampled Sites, Watersheds, and Riparian Zones for the U.S. Geological Survey Regional Stream Quality Assessment Geospatial database of the study boundary, sampled sites, watersheds, and riparian zones developed for the U.S. Geological Survey Midwest Stream Quality Assessment Geospatial database of the study boundary, sampled sites, watersheds, and riparian zones for U.S. Geological Survey Southeast Stream Quality Assessment Pesticides in Weekly Water Samples from the NAWQA Midwest Stream Quality Assessment (2013) Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Barbara J Mahler Lisa H Nowell Ian R Waite U.S. Geological Survey Daniel T Button More... Categories Data (4) Tag Types Theme (4) USGS Scientific Topic Keyword (4) Place (4) Harvest Set (4) Tag Schemes None (4) ISO 19115 Topic Category (4) United States (1) View Results as: JSON ATOM CSV Browse Folder

Water-quality and stream-habitat metrics calculated for the National Water-Quality Assessment Program's Regional Stream Quality Assessment conducted in the southeast United States in support of ecological and habitat stressor models, 2014 This data release includes metrics from the Regional Stream Quality Assessment (RSQA) from the Southeast Region for habitat stressors related to water-quality and habitat substrate. The goals of RSQA are to characterize multiple water-quality factors that are stressors to aquatic life ‐ contaminants, nutrients, sediment, and streamflow alteration – and to develop a better understanding of the relation of these stressors to ecological conditions in streams throughout the region. In order to characterize water-quality variables and stream-habitat measurements as an aggregation of multiple measurements over a sampling period, and in support of ecological stressor modelling, metrics (summary statistics or indices) were... Categories: Data; Tags: Alabama, Aquatic Biology, Ecological, Environmental Health, Georgia, All tags... Habitat, Metrics, North Carolina, South Carolina, Southeast United States, Stressors, Substrate, USGS Science Data Catalog (SDC), Virginia, Water Quality, Water quality, biota, inlandWaters, Fewer tags Data set for a mesocosm to field assessment of the ecological risks associated with neonicotinoids in U.S. streams Neonicotinoids, a widely used class of insecticide, have been found in surface waters globally. They pose a risk to non-target species found in aquatic environments such as aquatic macroinvertebrates. To better understand the effects of the neonicotinoids imidacloprid, clothianidin and their mixtures on aquatic communities we ran a 30 day mesocosm test. Rock trays were colonized with natural benthic communities in the Cache La Poudre River, located in the mountains of Northern Colorado, and relocated to a laboratory experimental stream setting. In total there were 33 experimental streams: 3 controls and 30 treatments consisting of both single compound and binary compound exposures with 5 treatment levels for each... Categories: Data; Tags: Ecology, Environmental Health, USGS Science Data Catalog (SDC), United States, Water Quality, All tags... aquatic insects, benthic communities, biota, clothianidin, ecotoxicology, effect concentration, imidacloprid, indirect effects, macroinvertebrate, mesocosm, neonicotinoid, pesticides, species sensitivity distribution, Fewer tags Concentrations of pesticides in sediment in 82 streams and in biofilms in 54 streams in California in 2017 Hydrophobic (sediment-associated) pesticides were measured in sediment samples collected from 82 wadeable streams and in biofilm in 54 of those streams in the Central California Foothills and Coastal Mountains ecoregion.115 current-use and 3 legacy pesticides were measured in stream sediment; 93 of the current-use pesticides and the same 3 legacy pesticides were measured in biofilm. On average 4 times as many current-use pesticides were detected in biofilm at a site (median of 2) as in sediment (median of 0.5). This data release provides data for the pesticide concentrations, information on the pesticide compounds, and input data and R scripts for statistical models used in the analysis presented in the journal... Categories: Data; Tags: Aquatic Biology, California, Central California Coastal, Ecology, Environmental Health, All tags... USGS Science Data Catalog (SDC), Water Quality, biofilm, biota, pesticide, sediment, stream, Fewer tags Dataset for an ecological risk assessment of Fipronil compounds in U.S. streams The phenylpyrazole insecticide fipronil and its degradates are a potential surface-water contaminant and toxicant to nontarget species such as aquatic macroinvertebrates. To better understand how fipronil, fipronil sulfide, fipronil sulfone, desulfinyl fipronil, and fipronil amide affect aquatic communities, a 30-day mesocosm experiment was run. Rock trays were colonized with natural benthic communities in the Cache La Poudre River in the mountains of northern Colorado and transplanted into a laboratory experimental stream setting. In total, there were 36 experimental streams: 3 controls, 3 solvent controls, and 30 treatments. Water quality metrics and samples for pesticide analysis were collected throughout the... Categories: Data; Tags: Aquatic Biology, Environmental Health, USGS Science Data Catalog (SDC), United States, Water Quality, All tags... benthic communities, biota, ecotoxicology, effect concentration, fipronil, macroinvertebrate, mesocosm, species sensitivity distribution, trophic cascade, Fewer tags