Studies on lakes as modifiers of manganese fluxes in pristine catchments are limited, despite manganese being a sensitive redox-change indicator and participating in the cycling of many key elements. We compiled 26 years of monitoring data from interconnected monomictic humic lake and dimictic clear-water lake to estimate the mean daily lakes' imports, pools and exports of manganese. The humic lake, surrounded by peatlands, ex...

Chemical preservatives can alter stable isotope ratios in animal tissues. The effects of preservation on δ 13 C and δ 15 N values have been investigated in a variety of species, but not on δ 2 H values or on the freshwater pearl mussel (FPM, Margaritifera margaritifera ) tissues. We evaluated the effect of ethanol preservation (unpreserved vs preserved tissues) over 6 months on the δ 13 C, δ 15 N and δ 2 H values of FPM foot a...