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Benthic Algae and Phytoplankton Community and Toxin Data for Selected Stations in the Mississippi Sound, 2019 The Bonnet Carré Spillway (BCS), located about 28 miles northwest of New Orleans, was constructed by the US Army Corp of Engineers in the early 1930s as part of an integrated flood-control system for the lower Mississippi River (MR). The BCS control structure consists of 350 individual bays that can be opened to divert water from the river to Lake Pontchartrain to relieve pressure on downstream levees. Lake Pontchartrain (LP) is hydrologically connected to the Mississippi Sound (MS Sound) and the Gulf of Mexico and is more accurately characterized as an estuarine embayment. BCS openings have occurred twelve times prior to 2019 because of high Mississippi River stages, typically in late spring. In 2019, the spillway... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Biology, USGS Science Data Catalog (SDC), Water Quality, Water Resources Cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected at eleven large river sites throughout the United States, June through October 2018 This U.S. Geological Survey (USGS) data release provides discretely measured cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected from eleven large river sites throughout the United States, from June through October 2018. Discrete water-quality samples were analyzed for cyanotoxins (anatoxin, cylindrospermopsin, microcystin, and saxitoxin), chlorophyll-a, and cyanobacterial toxin genetics as part of a National Water-Quality Assessment Project pilot study to describe cyanobacteria and cyanotoxin occurrence in the Nation's large rivers. Categories: Data; Tags: Anatoxin, Aquatic Biology, California, Chattahoochee River near Whitesburg, GA, Chlorophyll-a, All tags... Connecticut, Connecticut River at Thompsonville, CT, Contaminants, HABS, Cyanotoxin genetics, Cyanotoxins, Cylindrospermopsin, Delaware River at Trenton, NJ, Discretely measured, Dolichospermum (formerly Anabaena), Ecology, Environmental Health, Enzyme-linked immunosorbent assay (ELISA), Genetics, Georgia, Kansas, Kansas River at De Soto, KS, Limnology, Maryland, Microcystin, Microcystis, Minnesota, Mississippi River at Hastings, MN, Missouri, Missouri River at Hermann, MO, New Jersey, Ohio, Ohio River at Cannelton Dam at Cannelton, IN, Oregon, Pheophytin-a, Phytoplankton community composition, Planktothrix, Quantitative polymerase chain reaction (qPCR), Sacramento River at Freeport, CA, Saxitoxin, Susquehanna River at Conowingo, MD, Texas, Trinity River below Dallas, TX, USGS Science Data Catalog (SDC), USGS Station ID 01184000, USGS Station ID 01463500, USGS Station ID 01578310, USGS Station ID 02338000, USGS Station ID 03303280, USGS Station ID 05331580, USGS Station ID 06892350, USGS Station ID 06934500, USGS Station ID 08057410, USGS Station ID 11447650, USGS Station ID 14211720, United States, Water, Water Quality, Water Quality, Water quality, Willamette River at Portland, OR, anaC gene, cyrA gene, mcyE gene, sxtA gene, Fewer tags Microcystin, chlorophyll, and cell-count data for assessing the effect of salinity tolerance on cyanobacteria associated with a harmful algal bloom in Lake Okeechobee, Florida, July 9 to 17, 2017 This U.S. Geological Survey (USGS) Data Release provides microcystin, chlorophyll, and cell-count data for assessing the effect of salinity tolerance on cyanobacteria associated with a harmful algal bloom in Lake Okeechobee, Florida. All data are reported as raw measured values and are not rounded to USGS significant figures. Water and algal bloom material were collected from Lake Okeechobee, Florida on July 7, 2017. This dataset includes measurements of subsamples taken in the laboratory, collected July 9 to July 17, 2017, at nine different salinity concentrations. Categories: Data; Tags: Chlorophyll, Cyanobacteria, Dolichospermum, Florida, Harmful Algal Bloom, All tags... Lake Okeechobee, Microcystin, Microcystis, Pheophytin, Salinity, USGS Science Data Catalog (SDC), United States, Fewer tags Velocity test data for assessing the effect of salinity tolerance on cyanobacteria associated with a harmful algal bloom in Lake Okeechobee, Florida, July 10 to 13, 2017 This U.S. Geological Survey (USGS) Data Release provides velocity test data for assessing the effect of salinity tolerance on cyanobacteria associated with a harmful algal bloom in Lake Okeechobee, Florida, July 10 to 13, 2017. All data are reported as raw measured values and are not rounded to USGS significant figures. Water and algal bloom material were collected from Lake Okeechobee, Florida on July 7, 2017. This dataset includes continuous water-quality measurements take in the laboratory July 10 to July 13, 2017 measuring water temperature, specific conductance, salinity, pH, turbidity, dissolved oxygen, chlorophyll, and phycocyanin at five-minute intervals at velocities of 0.946, 0.271, and 0 feet per second... Categories: Data; Tags: Chlorophyll, Continuously Measured, Dissolved Oxygen, Florida, Harmful Algal Bloom, All tags... Lake Okeechobee, Monitor, Phycocyanin, Salinity, Specific Conductance, Turbidity, USGS Science Data Catalog (SDC), United States, Velocity, Water Temperature, pH, Fewer tags Current use pesticides in larval amphibian tissues, amphibian pathogen and wetland sediment screening data from three northeastern National Wildlife Refuges, 2013-14 The data include concentrations of current use pesticides in tissues of larval wood frog (Lithobates sylvaticus) and spotted salamander (Ambystoma maculatum) and the presence of ranavirus in wood frogs and spotted salamanders from three northeastern National Wildlife Refuges sampled in 2013 and 2014. The data also include estrogenicity, protein phosphatase 2A inhibition and a suite of 15 major and minor elements in sediment screened using portable X-Ray Fluorescence. The data include sediment and tissue samples collected from 16 wetlands at the Patuxent Research Refuge (PRR) in central Maryland, USA, 15 wetlands at the Assabet River and Oxbow National Wildlife Refuges (EMASS) in eastern Massachusetts, USA, and nine... Tags: Aquatic Biology, Environmental Health, Maryland, Massachusetts, USGS Science Data Catalog (SDC), All tags... Water Quality, Wildlife Biology, Wildlife Disease, amphibians, biota, endocrine disruption, frog, inlandWaters, metal elements, pesticides, salamander, wetland ecosystems, wildlife disease, Fewer tags 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 Cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected at twelve large river sites throughout the United States, June through October 2019 This U.S. Geological Survey (USGS) data release provides discretely measured cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected from twelve large river sites throughout the United States, from June through October 2019. Discrete water-quality samples were analyzed for cyanotoxins (anatoxin, cylindrospermopsin, microcystin, and saxitoxin), chlorophyll-a, and cyanobacterial toxin genetics as part of a National Water-Quality Assessment Project pilot study to describe cyanobacteria and cyanotoxin occurrence in the Nation's large rivers. The data release contains the genetic data (in .csv and .xlsx formats), qPCR standard curve information (in .csv and .xlsx formats), and a readme... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Anatoxin, California, Chattahoochee River near Whitesburg, GA, Chlorophyll-a, Connecticut, All tags... Connecticut River at Thompsonville, CT, Contaminants, HABS, Cyanotoxin genetics, Cyanotoxins, Cylindrospermopsin, Delaware River at Trenton, NJ, Discretely measured, Dolichospermum (formerly Anabaena), Enzyme-linked immunosorbent assay (ELISA), Genetics, Georgia, Hudson River near Poughkeepsie, NY, Kansas, Kansas River at De Soto, KS, Maryland, Microcystin, Microcystis, Minnesota, Mississippi River at Hastings, MN, Missouri, Missouri River at Hermann, MO, New Jersey, New York, Ohio, Ohio River at Cannelton Dam at Cannelton, IN, Oregon, Pheophytin-a, Phytoplankton community composition, Planktothrix, Quantitative polymerase chain reaction (qPCR), Sacramento River at Freeport, CA, Saxitoxin, Susquehanna River at Conowingo, MD, Texas, Trinity River below Dallas, TX, USGS Science Data Catalog (SDC), USGS Station ID 01184000, USGS Station ID 01372043, USGS Station ID 01463500, USGS Station ID 01578310, USGS Station ID 02338000, USGS Station ID 03303280, USGS Station ID 05331580, USGS Station ID 06892350, USGS Station ID 06934500, USGS Station ID 08057410, USGS Station ID 11447650, USGS Station ID 14211720, United States, Water, Water Quality, Water quality, Willamette River at Portland, OR, anaC gene, cyrA gene, mcyE gene, sxtA gene, Fewer tags Phytoplankton data for samples collected at twelve large river sites throughout the United States, June through October 2019 This U.S. Geological Survey (USGS) Data Release provides phytoplankton data for samples collected from twelve large river sites throughout the United States, from June through October 2019. All data are reported as raw calculated values and are not rounded to USGS significant figures. The dataset includes all routine and quality assurance/quality control samples collected as part of a National Water Quality Assessment Project pilot study to describe cyanobacteria and cyanotoxin occurrence in the Nation's large rivers. Phytoplankton were identified to the lowest possible taxonomic level with both abundance (reported as both natural units and cells) and biovolume reported. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Algae, Aquatic Biology, California, Chattahoochee River near Whitesburg, GA, Connecticut, All tags... Connecticut River at Thompsonville, CT, Contaminants, Cyanobacteria, Delaware River at Trenton, NJ, Division, Freshwater, Genus, Georgia, Harmful Algal Blooms (HABs), Harmful algal bloom, Hudson River near Poughkeepsie, NY, Indiana, Kansas, Kansas River at De Soto, KS, Limnology, Maryland, Minnesota, Mississippi River at Hastings, MN, Missouri, Missouri River at Hermann, MO, New Jersey, New York, Ohio River at Cannelton Dam at Cannelton, IN, Oregon, Phytoplankton, River, Sacramento River at Freeport, CA, Species, Susquehanna River at Conowingo, MD, Taxa, Taxonomy, Texas, Trinity River below Dallas, TX, USGS Science Data Catalog (SDC), USGS Station ID 01184000, USGS Station ID 01372043, USGS Station ID 01463500, USGS Station ID 01578310, USGS Station ID 02338000, USGS Station ID 03303280, USGS Station ID 05331580, USGS Station ID 06892350, USGS Station ID 06934500, USGS Station ID 08057410, USGS Station ID 11447650, USGS Station ID 14211720, United States, Water Quality, Water Quality, Willamette River at Portland, OR, water, Fewer tags Response of natural phytoplankton communities from Green Bay (Lake Michigan) and Maumee Bay (Lake Erie) to laboratory manipulations of nutrient and trace metal availability during late summer 2018 Microcystins (MC) are a class of cyanotoxins produced by many cyanobacteria taxa. Although toxic to metazoans, the evolution of microcystin pre-dates the appearance of metazoans, and so MC did not originate as a toxin to potential metazoan grazers. One hypothesized functional role of microcystin is the management and acquisition of metals, several of which form complexes with MC intracellularly. Metals are often used to build enzymes within the cell that allow cyanobacteria to use non-preferred nitrogen (N) and phosphorus (P) sources, such as nitrate, urea and organic P. If trace metals are in low supply, primary producers may become limited because of their inability to access these non-preferred N and P forms.... Categories: Data; Tags: Aquatic Biology, Great Lakes, Green Bay, Northwestern Lake Michigan, USGS Science Data Catalog (SDC), All tags... Western Lake Erie, cyanobacteria ["blue-green algae"], environment, Fewer tags Protein Phosphatase 2A screening of extracted sediments for samples collected for the Sediment-Bound Contaminant Resiliency and Response Strategy pilot study, northeastern United States, 2015 Coastal communities are uniquely vulnerable to sea-level rise and severe storms such as hurricanes. These events enhance the dispersion and concentration of natural and anthropogenic chemicals and pathogenic microorganisms that could adversely affect the health and resilience of coastal communities and ecosystems in subsequent years. The U.S. Geological Survey has developed the Sediment-Bound Contaminant Resiliency and Response (SCoRR) strategy to define baseline and post-event sediment-bound environmental health stressors. These data document the results from protein phosphatase 2A screening of extracts for selected stations in the northeastern U.S. during the 2015 pilot implementation of the SCoRR strategy in... Categories: Data; Tags: Assessment, Coastal, Connecticut, Contaminants, Delaware, All tags... District of Columbia, Environmental Health, Geochemistry, Geography, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, PP2A, Pennsylvania, Protein phosphatase inhibition, Rhode Island, Soil Sciences, South Carolina, USGS Science Data Catalog (SDC), Virginia, chemical analysis, contamination, environmental health, field monitoring stations, field sampling, pollution, sediment analysis, Fewer tags Phytoplankton data for samples collected at eleven large river sites throughout the United States, June through September 2017 This U.S. Geological Survey (USGS) Data Release provides phytoplankton data for samples collected from eleven large river sites throughout the United States, from June through September 2017. All data are reported as raw calculated values and are not rounded to USGS significant figures. The dataset includes all routine and quality assurance/quality control samples collected as part of a National Water Quality Assessment Project pilot study to describe the potential for cyanobacteria and cyanotoxin occurrence in the Nation's large rivers. Phytoplankton were identified to the lowest possible taxonomic level and abundances (density reported as natural units) are reported. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Algae, California, Chattahoochee River near Whitesburg, GA, Connecticut, Connecticut River at Thompsonville, CT, All tags... Cyanobacteria, Delaware River at Trenton, NJ, Division, Freshwater, Genus, Georgia, Harmful algal bloom, Indiana, Kansas, Kansas River at De Soto, KS, Maryland, Minnesota, Mississippi River at Hastings, MN, Missouri, Missouri River at Hermann, MO, New Jersey, Ohio River at Cannelton Dam at Cannelton, IN, Oregon, Phytoplankton, River, Sacramento River at Freeport, CA, Species, Susquehanna River at Conowingo, MD, Taxa, Taxonomy, Texas, Trinity River below Dallas, TX, USGS Science Data Catalog (SDC), USGS Station ID 01184000, USGS Station ID 01463500, USGS Station ID 01578310, USGS Station ID 02338000, USGS Station ID 03303280, USGS Station ID 05331580, USGS Station ID 06892350, USGS Station ID 06934500, USGS Station ID 08057410, USGS Station ID 11447650, USGS Station ID 14211720, United States, Willamette River at Portland, OR, Fewer tags Liquid Chromatography Triple Quadrupole Mass Spectrometry (LC/MS/MS) analysis of cyanotoxins and algal toxins in estuary samples collected from California, USA, in 2016-17 Cyanobacteria known to produce cyanotoxins have been reported worldwide. As monitoring efforts have improved, they have been detected in not only freshwater, but also in estuary and marine waters. To assess the occurrence of cyanotoxins and algal toxins in California estuaries, the NOAA MERHAB funded project collected samples monthly from 11 Californian estuary locations, with 5 locations sampled in 2016 as event response. This data release includes liquid chromatography triple quadrupole mass spectrometry (LC/MS/MS) results for 21 cyanotoxins and algal toxins in estuary samples collected from California in 2016-2017. Categories: Data; Tags: California, Environmental Health, USGS Science Data Catalog (SDC), chemical analysis, cyanotoxins, All tags... domoic acid, environmental health, liquid chromatography, mass spectrometry, microcystins, Fewer tags Phytoplankton tally sheet, including photomicrographs, for samples collected at eleven large river sites throughout the United States, June through September 2017 This U.S. Geological Survey (USGS) Data Release provides the phytoplankton tally sheet, including photomicrographs, for samples collected from eleven large river sites throughout the United States, from June through September 2017. All data are raw tallies, not calculated abundances or concentrations. The dataset includes all routine and quality assurance/quality control samples collected as part of a National Water Quality Assessment Project pilot study to describe the potential for cyanobacteria and cyanotoxin ocurrence in the Nation's large rivers. Phytoplankton were identified to the lowest possible taxonomic level and abundances (density reported as natural units) are reported. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Algae, California, Chattahoochee River near Whitesburg, GA, Connecticut, Connecticut River at Thompsonville, CT, All tags... Cyanobacteria, Delaware River at Trenton, NJ, Division, Freshwater, Genus, Georgia, Harmful algal bloom, Indiana, Kansas, Kansas River at De Soto, KS, Maryland, Minnesota, Mississippi River at Hastings, MN, Missouri, Missouri River at Hermann, MO, NCCWSC, New Jersey, Ohio River at Cannelton Dam at Cannelton, IN, Oregon, Phytoplankton, River, Sacramento River at Freeport, CA, Species, Susquehanna River at Conowingo, MD, Taxa, Taxonomy, Texas, Trinity River below Dallas, TX, USGS Science Data Catalog (SDC), USGS Station ID 01184000, USGS Station ID 01463500, USGS Station ID 01578310, USGS Station ID 02338000, USGS Station ID 03303280, USGS Station ID 05331580, USGS Station ID 06892350, USGS Station ID 06934500, USGS Station ID 08057410, USGS Station ID 11447650, USGS Station ID 14211720, United States, Willamette River at Portland, OR, Fewer tags Liquid Chromatography Triple Quadrupole Mass Spectrometry (LC/MS/MS) analysis of cyanobacteria cultures from Lake Elsinore and Canyon Lake (CA, USA, 2016) for cyanotoxins and algal toxins Cyanobacteria are common in inland water bodies. Many strains are known to produce potent toxins (cyanotoxins) which can impact human and animal health in sufficient concentrations. Lake Elsinore and Canyon Lake are two impaired lakes in California with frequent cyanobacteria blooms that are not monitored for toxin production. These data document the liquid chromatography triple quadrupole mass spectrometry (LC/MS/MS) results for 21 cyanotoxins and algal toxins in 13 cyanobacteria samples collected during bloom events from Lake Elsinore and Canyon Lake (CA, USA) in July, August, and September 2016. Categories: Data; Tags: California, Canyon Lake, Environmental Health, Lake Elsinore, USGS Science Data Catalog (SDC), All tags... chemical analysis, cyanotoxins, environmental health, liquid chromatography, mass spectrometry, microcystins, Fewer tags Phytoplankton data for samples collected at eleven large river sites throughout the United States, June through October 2018 This U.S. Geological Survey (USGS) Data Release provides phytoplankton data for samples collected from eleven large river sites throughout the United States, from June through October 2018. All data are reported as raw calculated values and are not rounded to USGS significant figures. The dataset includes all routine and quality assurance/quality control samples collected as part of a National Water Quality Assessment Project pilot study to describe cyanobacteria and cyanotoxin occurrence in the Nation's large rivers. Phytoplankton were identified to the lowest possible taxonomic level and abundance (reported as both natural units and cells) is reported. Categories: Data; Tags: Algae, Aquatic Biology, California, Chattahoochee River near Whitesburg, GA, Connecticut, All tags... Connecticut River at Thompsonville, CT, Contaminants, HABS, Cyanobacteria, Delaware River at Trenton, NJ, Division, Freshwater, Genus, Georgia, Harmful algal bloom, Indiana, Kansas, Kansas River at De Soto, KS, Limnology, Maryland, Minnesota, Mississippi River at Hastings, MN, Missouri, Missouri River at Hermann, MO, New Jersey, Ohio River at Cannelton Dam at Cannelton, IN, Oregon, Phytoplankton, River, Sacramento River at Freeport, CA, Species, Susquehanna River at Conowingo, MD, Taxa, Taxonomy, Texas, Trinity River below Dallas, TX, USGS Science Data Catalog (SDC), USGS Station ID 01184000, USGS Station ID 01463500, USGS Station ID 01578310, USGS Station ID 02338000, USGS Station ID 03303280, USGS Station ID 05331580, USGS Station ID 06892350, USGS Station ID 06934500, USGS Station ID 08057410, USGS Station ID 11447650, USGS Station ID 14211720, United States, Water, Water Quality, Water Quality, Willamette River at Portland, OR, Fewer tags Location, sampling methods and field conditions of resiliency-mode soil and sediment sampling stations sampled, Sediment-Bound Contaminant Resiliency and Response Strategy pilot study, northeastern United States, 2015 Coastal communities are uniquely vulnerable to sea-level rise (SLR) and severe storms such as hurricanes. These events enhance the dispersion and concentration of natural and anthropogenic chemicals and pathogenic microorganisms that could adversely affect the health and resilience of coastal communities and ecosystems in coming years. The U.S. Geological Survey has developed the Sediment-Bound Contaminant Resiliency and Response (SCoRR) strategy to define baseline and post-event sediment-bound environmental health (EH) stressors. These data document the location, sampling techniques and field conditions observed while collecting soil and sediment samples from selected stations in the northeastern US during the... Categories: Data; Types: Citation; Tags: Connecticut, Delaware, District of Columbia, Maine, Maryland, All tags... Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, USGS Science Data Catalog (SDC), Virginia, contamination and pollution, environmental health, field monitoring stations, field sampling, Fewer tags Exposure potential of marsh units to environmental health stressors in north shore Long Island salt marsh complex, New York This data release contains coastal wetland synthesis products for the geographic region of north shore Long Island, New York. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and mean tidal range, are calculated for smaller units delineated from a Digital Elevation Model, providing the spatial variability of physical factors that influence wetland health. Through scientific efforts initiated with the Hurricane Sandy Science Plan, the U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, LTER, Long Island Sound, Long-Term Ecological Research, Nassau County, All tags... New York, Suffolk County, United States, coastal ecosystems, coastal processes, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, tidal range, tides (oceanic), vegetation, wetland ecosystems, wetland functions, Fewer tags Water-quality and phytoplankton data for Lake Pontchartrain and the western Mississippi Sound associated with operation of the Bonnet Carré Spillway, 2008–2020 The Bonnet Carré Spillway (BCS), located about 28 miles northwest of New Orleans, Louisiana, was constructed in the early 1930s as part of an integrated flood-control system for the lower Mississippi River Plain. The BCS is designed to divert water from the Mississippi River (MSR) into Lake Pontchartrain (LP), which then flows into Lake Borgne and the Mississippi Sound (MS Sound), thus relieving pressure on levees downstream. Opening of the spillway occurs when measured streamflow in the MSR at New Orleans exceeds approximately 1.25 million cubic feet per second, which normally occurs once a year in late spring. In 2019, for the first time, the spillway opened twice in one year; the first opening occurred between... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bay Saint Louis, Mississippi, Bonnet Carré Spillway, Lake Pontchartrain, Louisiana, Mississippi, All tags... Mississippi Sound, Mississippi Sound - Lake Borgne, USGS Science Data Catalog (SDC), Water Quality, algal blooms, algal species composition, harmful algal blooms, water quality, Fewer tags Associations between cyanobacteria and indices of secondary production in the western basin of Lake Erie data Large lakes provide a variety of ecological services to surrounding cities and communities. Many of these services are supported by ecological processes that are threatened by the increasing prevalence of cyanobacterial blooms which occur as aquatic ecosystems experience cultural eutrophication. Over the past 10 years, Lake Erie experienced cyanobacterial blooms of increasing severity and frequency, which have resulted in impaired drinking water for the surrounding communities. Cyanobacterial blooms may impact ecological processes that support other services, but many of these impacts have not been documented. Secondary production (production of primary consumers) is an important process that supports economically... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Great Lakes, Great Lakes, Great Lakes Science Center, Kansas Water Science Center, Lake Erie, All tags... Mussel, USGS Science Data Catalog (SDC), Upper Midwest Environmental Sciences Center, cyanobacteria ["blue-green algae"], secondary production, Fewer tags Cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected at eleven large river sites throughout the United States, June through September 2017 This U.S. Geological Survey (USGS) data release provides discretely measured cyanotoxin, chlorophyll-a, and cyanobacterial toxin genetic data for samples collected from eleven large river sites throughout the United States, from June through September 2017. Discrete water-quality samples were analyzed for cyanotoxins (anatoxin, cylindrospermopsin, microcystin, and saxitoxin), chlorophyll-a, and cyanobacterial toxin genetics as part of a National Water-Quality Assessment Project pilot study to describe potential cyanotoxin occurrence in the Nation's large rivers. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Anatoxin, California, Chattahoochee River near Whitesburg, GA, Chlorophyll-a, Connecticut, All tags... Connecticut River at Thompsonville, CT, Cyanotoxin genetics, Cyanotoxins, Cylindrospermopsin, Delaware River at Trenton, NJ, Discretely measured, Dolichospermum (formerly Anabaena), Domoic acid, Enzyme-linked immunosorbent assay (ELISA), Georgia, Kansas, Kansas River at De Soto, KS, Liquid chromatography tandem-mass spectrometry (LC/MS/MS), Maryland, Microcystin, Microcystis, Minnesota, Mississippi River at Hastings, MN, Missouri, Missouri River at Hermann, MO, New Jersey, Nodularin, Ohio, Ohio River at Cannelton Dam at Cannelton, IN, Oregon, Pheophytin-a, Phytoplankton community composition, Planktothrix, Quantitative polymerase chain reaction (qPCR), Sacramento River at Freeport, CA, Saxitoxin, Susquehanna River at Conowingo, MD, Texas, Trinity River below Dallas, TX, USGS Science Data Catalog (SDC), USGS Station ID 01184000, USGS Station ID 01463500, USGS Station ID 01578310, USGS Station ID 02338000, USGS Station ID 03303280, USGS Station ID 05331580, USGS Station ID 06892350, USGS Station ID 06934500, USGS Station ID 08057410, USGS Station ID 11447650, USGS Station ID 14211720, United States, Water quality, Willamette River at Portland, OR, anaC gene, cyrA gene, mcyE gene, sxtA gene, Fewer tags 1 2 »