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Time series of total (closed circles) and dissolved (less than 0.45 µm, open circles) copper concentrations in the water column of (a) Lake Courtille and (b) Saint Germain les Belles Reservoir. Note: the y‐ and x‐axes scale differ between the 2 panels. The solid line is a first‐order loss (i.e., C = C 0 exp[–kt]) fit through the dissolved copper data.
