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Nitrogen and carbon stable isotopes (δ15N, δ13C) are commonly used to understand mercury (Hg) bioaccumulation and biomagnification in freshwater food webs. Though sulfur isotopes (δ34S) can distinguish between energy sources from the water column (aqueous sulfate) and from sediments to freshwater organisms, little is known about whether δ34S can help interpret variable Hg concentrations in aquatic...
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