Acute and chronic effects of water quality criteria-based metal mixtures on three aquatic species

1986 ◽  
Vol 5 (10) ◽  
pp. 917-931 ◽  
Author(s):  
Robert L. Spehar ◽  
James T. Fiandt
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Aquatic Species ◽  
Metal Mixtures ◽  
Chronic Effects ◽  
Acute And Chronic Effects

scholarly journals Acute and Chronic Effects of Clothianidin, Thiamethoxam and Methomyl on Chironomus dilutus

2021 ◽  
Author(s):  
Bryn M. Phillips ◽  
Jennifer P. Voorhees ◽  
Katie Siegler ◽  
Laura McCalla ◽  
Peter Meertens ◽  
...  
Keyword(s):  
Water Quality ◽  
Emerging Contaminants ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Chronic Effects ◽  
Median Lethal Concentrations ◽  
Neonicotinoid Pesticides ◽  
Acute And Chronic Effects ◽  
Carbamate Pesticide ◽  
Chironomus Dilutus

AbstractOrganism tolerance thresholds for emerging contaminants are vital to the development of water quality criteria. Acute (96-h) and chronic (10-day) effects thresholds for neonicotinoid pesticides clothianidin and thiamethoxam, and the carbamate pesticide methomyl were developed for the midge Chironomus dilutus to support criteria development using the UC Davis Method. Median lethal concentrations (LC50s) were calculated for acute and chronic exposures, and the 25% inhibition concentrations (IC25) were calculated for the chronic exposures based on confirmed chemical concentrations. Clothianidin effect concentrations were 4.89 µg/L, 2.11 µg/L and 1.15 µg/L for 96-h LC50, 10-day LC50 and 10-day IC25, respectively. Similarly, thiamethoxam concentrations were 56.4 µg/L, 32.3 µg/L and 19.6 µg/L, and methomyl concentrations were 244 µg/L, 266 µg/L and 92.1 µg/L. Neonicotinoid effect concentrations compared favorably to previously published 96-h and 14-day LC50 concentrations, and methomyl effect concentrations were within the acute survival range reported for Chironomus species and other organisms.

Volume Analysis for Attainability of Water Quality Criteria for Three Loading Constituents

2004 ◽  
Author(s):  
Ping Wang ◽  
Lewis Linker ◽  
James Collier ◽  
Gary Shenk ◽  
Robert Koroncai ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Volume Analysis

Developing Ambient Water Quality Criteria for Mercury: A Probabilistic Site-Specific Approach

2015 ◽  
Vol 2 (0) ◽  
pp. 9781780404028-9781780404028
Author(s):  
D. R. J. Moore ◽  
A. Pawlisz ◽  
R. Scott Teed
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Ambient Water ◽  
Site Specific ◽  
Specific Approach

scholarly journals Geochemical and biological controls on the ecological relevance of total, dissolved, and colloidal forms of trace elements in large boreal rivers: review and case studies

2020 ◽  
Vol 28 (2) ◽  
pp. 138-163
Author(s):  
C.W. Cuss ◽  
C.N. Glover ◽  
M.B. Javed ◽  
A. Nagel ◽  
W. Shotyk
Keyword(s):  
Water Quality ◽  
Trace Elements ◽  
Case Studies ◽  
Quality Criteria ◽  
Water Levels ◽  
Water Quality Criteria ◽  
Aquatic Life ◽  
Athabasca River ◽  
Biological Variables ◽  
Boreal Rivers

The concentrations of trace elements (TEs) in large boreal rivers can fluctuate markedly due to changing water levels and flow rates associated with spring melt and variable contributions from tributaries and groundwaters, themselves having different compositions. These fluctuating and frequently high concentrations create regulatory challenges for protecting aquatic life. For example, water quality criteria do not account for changes in flow regimes that can result in TE levels that may exceed regulatory limits, and neither do they account for the markedly different lability and bioaccessibility of suspended solids. This review addresses the geochemical and biological processes that govern the lability and bioaccessibility of TEs in boreal rivers, with an emphasis on the challenges posed by the colloidal behaviour of many TEs, and their relationship to the dissolved fraction (i.e., <0.45 μm in size). After reviewing the processes and dynamics that give rise to the forms and behaviour of TEs in large boreal rivers, their relevance for aquatic organisms and the associated relationships between size and lability and bioaccessibility are discussed. The importance of biological variables and different forms of TEs for limiting lability and bioaccessibility are also addressed. Two case studies emphasize seasonal fluctuations and accompanying changes in the distribution of TE amongst different size fractions and associated colloidal species in large boreal rivers: the Northern Dvina and one of its tributaries, the Pinega River, both in Russia, and the Athabasca River in Alberta, Canada. Water quality in the Athabasca River is briefly discussed with respect to Canadian guidelines.

Development of water quality criteria for phenanthrene and comparison of the sensitivity between native and non-native species

2015 ◽  
Vol 196 ◽  
pp. 141-146 ◽  
Author(s):  
Jiang-Yue Wu ◽  
Zhen-Guang Yan ◽  
Zheng-Tao Liu ◽  
Ji-dong Liu ◽  
Feng Liang ◽  
...  
Keyword(s):  
Water Quality ◽  
Native Species ◽  
Quality Criteria ◽  
Water Quality Criteria
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