The Experts below are selected from a list of 62505 Experts worldwide ranked by ideXlab platform
Brent C. Knights - One of the best experts on this subject based on the ideXlab platform.
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A sediment suspension system for bioassays with small Aquatic Organisms
Hydrobiologia, 1992Co-Authors: Michelle J. Schmidt-dallmier, Gary J. Atchison, Mark T. Steingraeber, Brent C. KnightsAbstract:Exposure of Aquatic Organisms to suspended sediments can impair growth and survival and increase bioaccumulation of sediment-associated contaminants. However, evaluation of the effects of suspended sediments and their associated contaminants on Aquatic Organisms has been hampered by the lack of a practical and inexpensive exposure system for conducting bioassays. We present a cost-effective system for assessing the effects of suspended sediments and associated contaminants on small Aquatic Organisms. A 7-day suspension test was conducted with nominal sediment concentrations ranging from 0.0 to 5.0 g 1−1. The system maintained relatively constant suspended sediment concentrations, as measured by turbidity, and caused minimal mortality to test Organisms.
Michelle J. Schmidt-dallmier - One of the best experts on this subject based on the ideXlab platform.
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A sediment suspension system for bioassays with small Aquatic Organisms
Hydrobiologia, 1992Co-Authors: Michelle J. Schmidt-dallmier, Gary J. Atchison, Mark T. Steingraeber, Brent C. KnightsAbstract:Exposure of Aquatic Organisms to suspended sediments can impair growth and survival and increase bioaccumulation of sediment-associated contaminants. However, evaluation of the effects of suspended sediments and their associated contaminants on Aquatic Organisms has been hampered by the lack of a practical and inexpensive exposure system for conducting bioassays. We present a cost-effective system for assessing the effects of suspended sediments and associated contaminants on small Aquatic Organisms. A 7-day suspension test was conducted with nominal sediment concentrations ranging from 0.0 to 5.0 g 1−1. The system maintained relatively constant suspended sediment concentrations, as measured by turbidity, and caused minimal mortality to test Organisms.
Gary J. Atchison - One of the best experts on this subject based on the ideXlab platform.
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A sediment suspension system for bioassays with small Aquatic Organisms
Hydrobiologia, 1992Co-Authors: Michelle J. Schmidt-dallmier, Gary J. Atchison, Mark T. Steingraeber, Brent C. KnightsAbstract:Exposure of Aquatic Organisms to suspended sediments can impair growth and survival and increase bioaccumulation of sediment-associated contaminants. However, evaluation of the effects of suspended sediments and their associated contaminants on Aquatic Organisms has been hampered by the lack of a practical and inexpensive exposure system for conducting bioassays. We present a cost-effective system for assessing the effects of suspended sediments and associated contaminants on small Aquatic Organisms. A 7-day suspension test was conducted with nominal sediment concentrations ranging from 0.0 to 5.0 g 1−1. The system maintained relatively constant suspended sediment concentrations, as measured by turbidity, and caused minimal mortality to test Organisms.
Mark T. Steingraeber - One of the best experts on this subject based on the ideXlab platform.
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A sediment suspension system for bioassays with small Aquatic Organisms
Hydrobiologia, 1992Co-Authors: Michelle J. Schmidt-dallmier, Gary J. Atchison, Mark T. Steingraeber, Brent C. KnightsAbstract:Exposure of Aquatic Organisms to suspended sediments can impair growth and survival and increase bioaccumulation of sediment-associated contaminants. However, evaluation of the effects of suspended sediments and their associated contaminants on Aquatic Organisms has been hampered by the lack of a practical and inexpensive exposure system for conducting bioassays. We present a cost-effective system for assessing the effects of suspended sediments and associated contaminants on small Aquatic Organisms. A 7-day suspension test was conducted with nominal sediment concentrations ranging from 0.0 to 5.0 g 1−1. The system maintained relatively constant suspended sediment concentrations, as measured by turbidity, and caused minimal mortality to test Organisms.
Wen-xiong Wang - One of the best experts on this subject based on the ideXlab platform.
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Prediction of metal toxicity in Aquatic Organisms
Chinese Science Bulletin, 2012Co-Authors: Wen-xiong WangAbstract:Metal pollution has been a major environmental problem in China with the increasing industrialization. The prediction of metal toxicity is extremely challenging due to the complex metal handling and sequestration strategies of different Aquatic Organisms. In this review, the recent progress made in this area is discussed. In particular, the subcellular partitioning model which has gained recognition in recent years is highlighted. The subcellular partitioning model appears to be dependable for predicting the toxicity in unicellular phytoplankton. It is important to understand the differential ways that metals bind to different subcellular pools and their ecotoxicological significance in Aquatic Organisms under different exposure regimes. It is also critical to appreciate that every metal is unique to each Aquatic species. Despite the huge progress made over the past 30 years, much remains to be done to fully understand metal toxicity in Aquatic Organisms.
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Subcellular Partitioning and the Prediction of Cadmium Toxicity to Aquatic Organisms
Environmental Chemistry, 2006Co-Authors: Wen-xiong Wang, Philip S. RainbowAbstract:Environmental Context. There is a considerable interest in predicting cadmium (Cd) toxicity to Aquatic Organisms, largely stemming from environmental Cd pollution and the need to establish water quality criteria to protect Aquatic ecosystems. Chemistry-orientated models have been developed over the past decades to predict Cd toxicity, focusing on identifying which Cd forms are present in the Aquatic environment, and investigating their interaction with the biological site of action. Understanding the cellular fates of Cd may provide an alternative method to predict Cd toxicity, as the complex cellular interactions of Cd within the Organisms can, in this way, be addressed. Abstract. The internal metal sequestration strategies of different Aquatic Organisms are complex and variable; thus it is a formidable task to predict metal toxicity. Metals accumulated by Aquatic Organisms are associated with different subcellular compartments (i.e. heat-sensitive proteins, heat-stable proteins (metallothioneins), granules, cellular debris, and organelles). Such subcellular partitioning is dynamic in response to metal exposure and other environmental conditions, and is metal- and organism-specific. Previous models predicting metal toxicity have relied on the free ion metal activity (i.e. the free ion activity model) or more recently on the metal binding with the proposed toxicological site of action (i.e. the biotic ligand model). Neither of these models considers the complexity of internal metal subcellular fractionation, which may significantly affect metal toxicity in Aquatic Organisms and subsequent trophic transfer of metals to consumers. Recent studies in small Aquatic Organisms have revealed that the subcellular partitioning model (SPM) may provide an improved method to predict Cd toxicity, but more studies are needed in the future.