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Toxicity and subcellular fractionation of yttrium in three freshwater organisms : Daphnia magna, Chironomus riparius and Oncorhynchus mykiss
(American Chemical Society, 2019-08-15)
The demand for rare earth elements (REEs) has increased since the 1990s leading to the development of many mining projects worldwide. However, less is known about how organisms can handle these metals in natural aquatic ...
Mapping metal (Hg, As, Se), lipid and protein levels within fish muscular system in two fish species (Striped Bass and Northern Pike)
(Elsevier, 2020-11-19)
Current guidelines tend to limitfish consumption based on mercury (Hg) or monomethylmercury(MeHg) content infishflesh, without considering the presence of antagonist chemical elements thatcould modulate Hg toxicity. However, ...
Understanding food web mercury accumulation through trophic transfer and carbon processing along a river affected by recent run-of-river dams
(2021-02-03)
Unlike large dams which favor methylation of Hg in flooded soils over long periods, run-of-river dams are designed to flood a limited area of soils and are therefore not expected to significantly affect mercury (Hg) cycling ...
Effects of experimental thermocline and oxycline deepening on methylmercury bioaccumulation in a Canadian Shield lake
(American Chemical Society, 2014-02-10)
Environmental disturbances like deforestation or climate change may influence lake thermal and oxic stratification, thereby modifying cycles of contaminants such as mercury (Hg). In a lake naturally separated into three ...
Role of organic matter and microbial communities in mercury retention and methylation in sediments near run-of-river hydroelectric dams
(Elsevier, 2021-02-06)
Run-of-river power plants (RoRs) are expected to triple in number over the next decades in Canada. These struc-tures are not anticipated to considerably promote the mobilization and transport of mercury (Hg) and its ...
Mobilization and transformation of mercury across a dammed boreal river are linked to carbon processing and hydrology
(Wiley, 2020-09-22)
Reservoirs are known to accelerate the mobilization and cycling of mercury and carbon as aresult of flooding of terrestrial organic matter, which can lead to environmental concerns at local andbroader spatial scales. We ...
Local fungi, willow and municipal compost effectively remediate petroleum-contaminated soil in the Canadian North
(Elsevier, 2018-12-15)
Low energy-input alternatives based on locally available products are needed for treating petroleum-hydrocarbon spills in northern regions. We tested the efficacy of three local biological components (municipal compost, ...
Fate and trophic transfer of rare earth elements in temperate lake food webs
(2017-05-05)
Many mining projects targeting rare earth elements (REE) are in development in North America, but the background concentrations and trophic transfer of these elements in natural environments have not been well characterized. ...
Freshwater sample preservation for the analysis of dissolved low molecular mass thiols
(Wiley, 2017)
Low molecular mass (LMM) thiols are ubiquitous organosulfur peptides that play key roles in biogeochemical element cycling. These LMM thiols, found at low concentrations in the water column, are highly sensitive to oxidation ...
Mercury and selenium distribution in key tissues and early life stages of Yellow Perch (Perca flavescens)
(Elsevier, 2019-07-26)
Whereas early life stages are usually considered as particularly sensitive to both organic and inorganic contaminants, field studies assessing contaminant bioaccumulation in these stages are scarce. Selenium (Se) is thought ...