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Your search keyword '"Amanda E. Poste"' showing total 2 results
Start Over Author "Amanda E. Poste" Journal the science of the total environment
2 results on '"Amanda E. Poste"'

1. Mercury in fish from Norwegian lakes: The complex influence of aqueous organic carbon

Author

Amanda E. Poste, Heleen A. de Wit, Thorjørn Larssen, and Hans Fredrik Veiteberg Braaten

Subjects
chemistry.chemical_classification, Total organic carbon, Environmental Engineering, 010504 meteorology & atmospheric sciences, Mercury in fish, Chemistry, chemistry.chemical_element, Bioconcentration, 010501 environmental sciences, 01 natural sciences, Pollution, Mercury (element), chemistry.chemical_compound, Environmental chemistry, Bioaccumulation, Dissolved organic carbon, Environmental Chemistry, Organic matter, Waste Management and Disposal, Methylmercury, 0105 earth and related environmental sciences
Abstract

Mercury (Hg) concentrations in water and biota are often positively correlated to organic matter (OM), typically measured as total or dissolved organic carbon (TOC/DOC). However, recent evidence suggests that higher OM concentrations inhibit bioaccumulation of Hg. Here, we test how TOC impacts the Hg accumulation in fish in a synoptic study of Methyl-Hg (MeHg) in water and total Hg (THg) in perch (Perca fluviatilis) in 34 boreal lakes in southern Norway. We found that aqueous MeHg (r2 = 0.49, p

Published
2017

2. Using the INCA-Hg model of mercury cycling to simulate total and methyl mercury concentrations in forest streams and catchments

Author

Peter J. Dillon, Martyn N. Futter, David R. S. Lean, Amanda E. Poste, Dan Butterfield, Paul Whitehead, and Ashu Dastoor

Subjects
Mercury cycling, Environmental Engineering, Drainage basin, chemistry.chemical_element, STREAMS, Environment, Sensitivity and Specificity, chemistry.chemical_compound, Rivers, Environmental Chemistry, Waste Management and Disposal, Methylmercury, Hydrology, Ontario, geography, geography.geographical_feature_category, Taiga, Mercury, Methylmercury Compounds, Pollution, Mercury (element), chemistry, Models, Chemical, Environmental chemistry, Soil water, Environmental science, Seasons, Surface water, Monte Carlo Method, Water Pollutants, Chemical, Environmental Monitoring
Abstract

We present a new, catchment-scale, process-based dynamic model for simulating mercury (Hg) in soils and surface waters. The Integrated Catchments Model for Mercury (INCA-Hg) simulates transport of gaseous, dissolved and solid Hg and transformations between elemental (Hg0), ionic (Hg(II)) and methyl (MeHg) Hg in natural and semi-natural landscapes. The mathematical description represents the model as a series of linked, first-order differential equations describing chemical and hydrological processes in catchment soils and waters which we believe control surface water Hg dynamics. The model simulates daily time series between one and 100 years long and can be applied to catchments ranging in size from

Published
2011

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