Skip to main content
Advanced Search

Filters: Tags: water quality criteria (X)

12 results (9ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
Waterborne and sediment selenium (Se) data, in conjunction with selected physicochemical parameters, were collected from streams of the middle Arkansas River basin, Colorado, USA, to examine the factors affecting sediment Se accumulation in a lotic environment. An empirical model of dissolved-to-sediment Se transfer in western streams, as an interactive function of sediment organic carbon content (R2 = 0.78, p < 0.001, n = 34), was developed and validated. Sediment Se and associated biological effects data were compiled from the literature, to provide an estimate of sediment Se concentration thresholds that have biological effects. Based on this preliminary analysis, sediment Se concentrations of 2.5 ?g/g would...
A number of streams in Colorado were found to contain waterborne selenium concentrations that consistently exceeded the current U.S. EPA chronic criterion of 5 Î&frac14;g/L and often exceeded the acute criterion of 20 Î&frac14;g/L. Despite these elevated concentrations, no biological impact was observed. These findings led to a review of selenium exposure pathways in freshwater. The literature strongly indicates that chronic selenium toxicity can result from accumulation of selenium in the sediment, movement into the food chain, and resulting dietary uptake. Chronic toxicity does not appear to be strictly a result of waterborne selenium concentrations. In fact, dissolved selenium concentrations are a poor predictor...
thumbnail
Data regarding the evaluation of the toxicity of zinc in 1-, 3-, 8-, 24-, and 48-hour exposures with a cladoceran (Ceriodaphnia dubia), and in 1-, 3-, 8-, 24-, and 96-hour exposures with rainbow trout (Oncorhynchus mykiss) on survival and mobility of test organisms.
thumbnail
Description of Work Determine the relative sensitivity of two species of amphibians (i.e. Wood Frogs Rana sylvatica, Cricket Frogs Acris crepitans blanchardi, American Toad Bufo americana) to exposure to acute and chronic levels of nitrate, nitrite and ammonia. This data will be used to evaluate the current ammonia criteria and for possible inclusion in the development of criteria for nitrite and nitrate.
thumbnail
The data release includes data from four studies: (1) toxicity of a permitted effluent, which entered the Deep Fork River (DFR), Oklahoma, USA, to a unionid mussel (Lampsilis siliquoidea) and to 2 standard test species (cladoceran Ceriodaphnia dubia; and fathead minnow Pimephales promelas) in short-term 7-d effluent tests; (2) relative sensitivities of the 3 species to potassium (K), an elevated major ion in the effluent, using 7-d toxicity tests with KCl spiked into a DFR upstream reference water; (3) potential influences of background water characteristics on the acute K toxicity to the mussel (96-h exposures) and cladoceran (48-h exposure) in 4 reconstituted waters that mimicked the hardness and ionic composition...
thumbnail
The data consists of the responses (survival, growth, and/or reproduction) of test organisms were determined in six concentrations of toxicants in 7-day toxicity tests or in four different feeding rates in 7-day feeding experiments. Specifically we evaluated the sensitivity of 2 mussel species (Villosa constricta and Lampsilis siliquoidea) and P. promelas and C. dubia using effluents in 7-d exposures. We then refined the method by determining the best feeding rate of algal mixture for 1-, 2-, and 3-wk-old L. siliquoidea in a 7-d feeding experiment, and using derived optimal feeding rates to assess the sensitivity of the 3 ages of juveniles in a 7-d NaCl test. Finally, we conducted an interlaboratory study among...
The U.S. Environmental Protection Agency's (U.S. EPA's) current acute aquatic life criterion for selenium (Se), 20 ?g/L, was based on a back-calculation from the chronic criterion of 5 ?g/L, using the acute-to-chronic ratio in reverse. While bioaccumulation and subsequent toxicity through dietary uptake are important factors in chronic toxicity, acute toxicity is a shortterm phenomenon, which should be promulgated with an acute value derived from direct toxicity studies, similar to other metals and metalloids. Acute toxicity values from the U.S. EPA Se criteria document were updated with more recent toxicity data for the two primary forms of Se, selenite (Se IV) and selenate (Se VI). Using this updated toxicity...
thumbnail
Description of Work The work completed for this template will provide the following information: 1) Generate acute and chronic toxicity data for freshwater mussels and snails to enhance the protection of listed/endangered species in the GL basin; 2) Refine methods and conduct acute and chronic toxicity tests on amphibians; 3) Develop and test methods for conducting chronic toxicity tests for mayflies.
thumbnail
The United States Geological Survey’s (USGS) New Jersey Water Science Center, in coordination with the Delaware River Basin Commission (DRBC) deployed a novel bacterial water-quality monitor, the Fluidion Alert V2 (Fluidion), in the Delaware River at Pyne Poynt Park in Camden County, New Jersey. Following United States Environmental Protection Agency (EPA) recreational water quality criteria, DRBC has been evaluating fecal indicator bacteria (FIB) abundance along Lower Delaware River at Pyne Poynt Park in support of primary use recreation (DRBC, 2022). The EPA recreation criteria establish acceptable levels of FIB abundance for primary contact recreation, such as swimming, and secondary contact recreation, such...
thumbnail
The responses (survival, growth, and/or reproduction) of test organisms in six concentrations of toxicants in several test waters with different water quality characteristics. In addition to the individual biological data, chemical, and water quality measurements from each toxicity test are also reported. Test organisms include unionid mussels (Lampsilis siliquoidea, Villosa iris), a midge (Chironomus dilutus), fish (rainbow trout Oncorhynchus mykiss and fathead minnow, Pimephales promelas), 2 amphibians (Hyla versicolor, Lithobates sylvaticus), and an amphipod (Hyalella azteca).
thumbnail
Survival, growth and reproduction of Ceriodaphnia dubia and Neocloeon triangulifer, metal concentrations and water quality parameters from nickel and zinc exposures in natural waters
thumbnail
The objective of this study was to evaluate the chronic toxicity of potassium (tested as KCl) to a commonly tested unionid mussel (fatmucket, Lampsilis siliquoidea) at five water hardness levels (25, 50, 100, 200, 300 mg/L as CaCO3) representing most surface waters in the United States. Chronic 28-d potassium chloride toxicity tests were conducted with 3-week-old juvenile fatmucket using six concentrations of potassium in the five base waters of differing hardness using ASTM standard methods. In this data release we report individual survival, mass, and length along with chemical and water quality measurements.


    map background search result map search result map Determination of the Sensitivity of Two Species of Amphibians to Toxicity From Nitrate, Nitrite and Ammonia Toxicity Testing for Stream Dwelling Amphibians, Mussels, and Mayflies Acute and latent effects of zinc on two commonly tested species (Ceriodaphnia dubia and Oncorhynchus mykiss) Chemical and biological data from acute and chronic exposure to sodium nitrate and sodium sulfate for several freshwater organisms in water-only bioassays Survival, growth and reproduction of C. dubia and N. triangulifer to nickel and zinc exposure in natural waters Chemical and biological data from a study on method development for a short term 7 day sodium chloride and mock effluent toxicity tests with unionid mussels Chemical and biological data from a study on sensitivity of a unionid mussel (Lampsilis siliquoidea) to a permitted effluent and elevated potassium Survival, growth, and chemical data from a study on influences of water hardness on chronic toxicity of potassium chloride to a Unionid mussel (Lampsilis siliquoidea) Urban Waters Federal Partnership: Novel bacteria monitoring technology in support of recreational water quality monitoring in the Lower Delaware River Acute and latent effects of zinc on two commonly tested species (Ceriodaphnia dubia and Oncorhynchus mykiss) Chemical and biological data from acute and chronic exposure to sodium nitrate and sodium sulfate for several freshwater organisms in water-only bioassays Survival, growth and reproduction of C. dubia and N. triangulifer to nickel and zinc exposure in natural waters Chemical and biological data from a study on method development for a short term 7 day sodium chloride and mock effluent toxicity tests with unionid mussels Chemical and biological data from a study on sensitivity of a unionid mussel (Lampsilis siliquoidea) to a permitted effluent and elevated potassium Survival, growth, and chemical data from a study on influences of water hardness on chronic toxicity of potassium chloride to a Unionid mussel (Lampsilis siliquoidea) Urban Waters Federal Partnership: Novel bacteria monitoring technology in support of recreational water quality monitoring in the Lower Delaware River Toxicity Testing for Stream Dwelling Amphibians, Mussels, and Mayflies Determination of the Sensitivity of Two Species of Amphibians to Toxicity From Nitrate, Nitrite and Ammonia