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Predicting a area’s chance of getting fish with poisonous ranges of methylmercury

Credit: Pixabay/CC0 Public Domain

Consuming methylmercury-contaminated fish poses a hazard to human well being. New analysis revealed in Environmental Toxicology and Chemistry might assist environmental useful resource administration officers predict which areas are more likely to have fish with excessive concentrations of this toxin, with out the necessity for in depth testing.

Investigators discovered that 72% of the variance in common concentrations of methylmercury in largemouth bass between areas of the Southeastern U.S. may very well be defined by the p.c protection of land by evergreen forests, emergent herbaceous wetlands, and pasture/hay.

The scientists clarify that inorganic mercury from the ambiance is deposited throughout the panorama, however that land cover determines how a lot of this inorganic mercury can be transported to freshwater techniques and transformed to methylmercury in aquatic environments.

“Our study suggests that monitoring efforts should focus on ecoregions with land cover types that increase the ‘sensitivity’ of water bodies to atmospheric mercury deposition,” stated lead creator Ray Drenner, Ph.D., of Texas Christian University. “We hope our study helps resource managers tasked with issuing fish consumption advisories for mercury.”

Investigating mercury contamination in freshwater lakes in Korea

More data:
Ray W. Drenner et al, Effect of Land Cover on Ecoregion‐Scale Spatial Patterns of Mercury Contamination of Largemouth Bass within the Southeastern United States, Environmental Toxicology and Chemistry (2022). DOI: 10.1002/etc.5426

Predicting a area’s chance of getting fish with poisonous ranges of methylmercury (2022, August 17)
retrieved 17 August 2022
from https://phys.org/news/2022-08-region-likelihood-fish-toxic-methylmercury.html

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