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Relationship between the mean total MAA concentrations (mg g−1 dry wt) in populations of the copepods Boeckella gibbosa, B. gracilipes, B. meteoris, and Parabroteas sarsi and (A) lake altitude, (B) the fraction of the water column to which 1% of the surface UVR at 320 nm (Z1%:Zmax) penetrated, and (C) the diffuse attenuation coefficient (Kd) at 320 nm.
