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Galloway, Jason, 2015. Temporal trends in mercury, methylated mercury and their relation to dissolved organic carbon : simulation with the Riparian Integration Flow-Concentration Model. Second cycle, A2E. Uppsala: SLU, Dept. of Aquatic Sciences and Assessment

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Abstract

Mercury (Hg) and methylated mercury (MeHg) are major environmental pollutants in boreal regions. Dissolved organic carbon (DOC) has been established by a number of
studies to be a key vector in the mobilisation of terrestrial Hg and MeHg to aquatic environments where Hg and MeHg can then enter the food chain. This study examined long-term trends in DOC (1986-2012), Hg (1993-2000) and MeHg (1993-2000) stream water concentrations in three sites (C2- forest, C4- mire and C7 - mixed) in the Svartberget
catchment in northern Sweden. A positive trend was found in DOC concentrations over the last decade while results for Hg and MeHg were inconclusive. The Riparian Flow-Concentration Integration Model (RIM) in three forms (RIMstatic, RIMdyn and RIMmed) was then used to simulate stream water concentrations using flow as an input and model residuals were examined to provide insight into solute
dynamics in the three study sites through time. Model residuals were compared and the Nash-Sutcliffe model efficiency coefficient was used to assess the performance of
each model at each site.

Main title:Temporal trends in mercury, methylated mercury and their relation to dissolved organic carbon
Subtitle:simulation with the Riparian Integration Flow-Concentration Model
Authors:Galloway, Jason
Supervisor:Bishop, Kevin
Examiner:Futter, Martyn
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2015
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:NM025 EnvEuro - European Master in Environmental Science 120 HEC
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Keywords:Mercury, model, pollution, water chemistry
URN:NBN:urn:nbn:se:slu:epsilon-s-4870
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-4870
Subjects:Water resources and management
Language:English
Deposited On:28 Sep 2015 13:36
Metadata Last Modified:28 Sep 2015 13:36

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