Figure 1: Total concentrations of acid-extractable metals of concern, cadmium (A), copper (B), lead (C), and zinc (D) in sediment samples evaluated within the white sturgeon sediment toxicity tests. The 90th centile of the distribution is designated with a solid horizontal blue line. A dashed line and a solid black line are used to identify the probably effect concentration and threshold effect concentration, respectively, as defined by MacDonald et al. [40] and are utilized and discussed in a parallel article to characterize risk [24]. Treatments included negative controls with water only (H2O) and artificial sediment (CTRL), reference sediments from Lower Arrow Lake (LALL) and Genelle (GE), and site sediments from Deadman’s Eddy (DE), Northport (NP), Little Dallas (LD), Upper Marcus Flats (UMF) and Lower Marcus Flats (LMF).