scholarly journals Forest harvest contribution to Boreal freshwater methyl mercury load

2016 ◽  
Vol 30 (6) ◽  
pp. 825-843 ◽  
Author(s):  
Rose-Marie Kronberg ◽  
Andreas Drott ◽  
Martin Jiskra ◽  
Jan G. Wiederhold ◽  
Erik Björn ◽  
...  
Keyword(s):  
Methyl Mercury ◽  
Forest Harvest ◽  
Mercury Load

scholarly journals Corrections to Methyl Mercury Formation in Hillslope Soils of Boreal Forests: The Role of Forest Harvest and Anaerobic Microbes

2017 ◽  
Vol 52 (1) ◽  
pp. 367-367
Author(s):  
Rose-Marie Kronberg ◽  
Martin Jiskra ◽  
Jan G. Wiederhold ◽  
Erik Björn ◽  
Ulf Skyllberg
Keyword(s):  
Boreal Forests ◽  
Methyl Mercury ◽  
Forest Harvest

scholarly journals Methyl Mercury Formation in Hillslope Soils of Boreal Forests: The Role of Forest Harvest and Anaerobic Microbes

2016 ◽  
Vol 50 (17) ◽  
pp. 9177-9186 ◽  
Author(s):  
Rose-Marie Kronberg ◽  
Martin Jiskra ◽  
Jan G. Wiederhold ◽  
Erik Björn ◽  
Ulf Skyllberg
Keyword(s):  
Boreal Forests ◽  
Methyl Mercury ◽  
Forest Harvest

Methyl mercury in the dutch rhine delta

1994 ◽  
Vol 30 (10) ◽  
pp. 213-219 ◽  
Author(s):  
Hendrik Pieters ◽  
Victor Geuke
Keyword(s):  
Suspended Matter ◽  
Methyl Mercury ◽  
Mercury Contamination ◽  
Benthic Organisms ◽  
Considerable Decrease ◽  
Continuous Sedimentation ◽  
Highly Correlated ◽  
High Level ◽  
Almost All

Samples of yellow eel from various locations in the Dutch Rhine area have been analyzed for trend monitoring of mercury since 1977. In the western Rhine delta mercury levels in eels have hardly changed since the seventies, whereas in the eastern part of the Dutch Rhine area a considerable decrease of mercury concentrations in eel has occurred. Because of continuous sedimentation of contaminated suspended matter transported from upstream regions, accumulation rates and concentrations of mercury in eel in the western Rhine delta remained at a relatively high level. Analyses of methyl mercury in biota have been performed to elucidate the role of methyl mercury in the mercury contamination of the Dutch Rhine ecosystem. Low percentages of methyl mercury were observed in zooplankton (3 to 35%). In benthic organisms (mussels) percentages of methyl mercury ranged from 30 to 57%, while in fish species and liver of aquatic top predator birds almost all the mercury was present in the form of methyl mercury (> 80%). During the period 1970-1990 mercury concentrations of suspended matter in the eastern Rhine delta have drastically decreased. These concentrations seemed to be highly correlated with mercury concentrations of eel (R = 0.84). The consequences of this relation are discussed.

HgS and Zuotai differ from HgCl2 and methyl mercury in intestinal Hg absorption, transporter expression and gut microbiome in mice

2019 ◽  
Vol 379 ◽  
pp. 114615 ◽  
Author(s):  
Bin-Bin Zhang ◽  
Yong-Mei Liu ◽  
An-Ling Hu ◽  
Shang-Fu Xu ◽  
Li-Da Fan ◽  
...  
Keyword(s):  
Gut Microbiome ◽  
Methyl Mercury ◽  
Transporter Expression

Methyl mercury in zooplankton—the role of size, habitat, and food quality

2002 ◽  
Vol 59 (10) ◽  
pp. 1606-1615 ◽  
Author(s):  
Martin Kainz ◽  
Marc Lucotte ◽  
Christopher C Parrish
Keyword(s):  
Organic Matter ◽  
Fatty Acid ◽  
Body Size ◽  
Methyl Mercury ◽  
Size Fraction ◽  
Food Sources ◽  
Calanoid Copepods ◽  
Bacterial Food

Pathways of methyl mercury (MeHg) accumulation in zooplankton include ingestion of organic matter (OM). We analyzed fatty acid (FA) biomarkers in zooplankton to (i) investigate the effect of allochthonous and autochthonous OM ingestion on MeHg concentrations ([MeHg]) in zooplankton and (ii) examine how algal and bacterial food sources affect MeHg bioaccumulation. We partitioned bulk zooplankton samples (i.e., >500, 202, 100, and 53 μm) from Lake Lusignan (Québec) and measured [MeHg] and [FA] in each fraction. [MeHg] increased with increasing body size and was significantly higher in pelagic than in littoral macrozooplankton (>500 μm). The amount of the ingested terrestrial FA biomarker 24:0 indicated that less than 1% of the total FA in zooplankton was derived from allochthonous sources. More than 60% of the ingested FA originated from algal biomarkers and <10% from bacterial biomarkers. Relative amounts of algal-derived essential FA and bacterial FA were not associated with [MeHg] in any size fraction. In pelagic zones, the amount of MeHg in zooplankton related positively to the number of large organisms such as Calanoid copepods and Daphnia. We propose that the accumulation of MeHg in lacustrine zooplankton depends on the zooplankton habitat rather than on the quality of ingested food.

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