Filters: Tags: Water hardness (X)20 results (11ms)
Effects of pH, calcium, alkalinity, hardness, and chlorphyll on the survival, growth, and reproductive success of zebra mussel(Dreissena polymorpha) in Ontario lakes
Specific Conductance and pH as Indicators of Watershed Disturbance in Streams of the New Jersey Pinelands, USA
Long-term exposure to small temperature increase and sublethal ammonia in hardwater acclimated rainbow trout: Does acclimation occur?
Cadmium biodynamics in the oligochaete Lumbriculus variegatus and its implications for trophic transfer
It has become increasingly apparent that diet can be a major source of trace metal bioaccumulation in aquatic organisms. In this study, we examined cadmium uptake, efflux, and subcellular compartmentalization dynamics in the freshwater oligochaete Lumbriculus variegatus. L. variegatus is an important component of freshwater food webs in Europe and North America and is potentially useful as a standard food source for laboratory-based trophic transfer studies. Cadmium accumulation and depuration were each followed for 10 days. Rate constants of uptake (ku) and efflux (ke) were estimated and subcellular Cd compartmentalization was followed over the course of uptake and efflux. The partitioning of Cd into operationally-defined...
Surface-Water-Quality Data and Time-Series Plots to Support Implementation of Site-Dependent Aluminum Criteria in Massachusetts, 2018–19
This data release includes water-quality data collected at 38 sites in central and eastern Massachusetts from April 2018 through May 2019 by the U.S. Geological Survey to support the implementation of site-dependent aluminum criteria for Massachusetts waters. Samples of effluent and receiving surface waters were collected monthly at four wastewater-treatment facilities (WWTFs) and seven water-treatment facilities (WTFs) (see SWQ_data_and_instantaneous_CMC_CCC_values.txt). The measured properties and constituents include pH, hardness, and filtered (dissolved) organic carbon, which are required inputs to the U.S. Environmental Protection Agency's Aluminum Criteria Calculator version 2.0 (U.S. Environmental Protection...
Biological and chemical data from chloride bioassays with native wetland species in natural and reconstituted Prairie Pothole waters
Biological endpoints for three focal test species [Daphnia magna (mortality), Psuedacris maculata (mortality, growth, and development), and Lemna gibba (growth)] in response to exposure to reconstituted or field-collected water under laboratory conditions. Field-collected waters were collected from wetlands within the Prairie Pothole Region (PPR) of the United States. Reconstituted water was mixed to mimic some chemistry of surface water from brine contaminated PPR wetlands. Also included are water quality and chemical concentration data from all assays.
Effect of Iodophor Concentration and Duration of Exposure during Water Hardening on Survival of Atlantic Salmon Eggs
Costs of chronic waterborne zinc exposure and the consequences of zinc acclimation on the gill/zinc interactions of rainbow trout in hard and soft water
Effect of dumping and cleaning activities on the aquatic ecosystems of the Guadiamar River following a toxic flood
Cadmium accumulation and elimination by two aquatic mosses, Fontinalis dalecarlica and Platyhypnidium riparioides: Effect of Cd concentration, exposure time, water hardness and moss species
Toxicity identification evaluation of metal-contaminated sediments using an artificial pore water containing dissolved organic carbons
Effect of dumping and cleaning activities on the aquatic ecosystems of the Guadiamar river following a toxic flood