Fig. 7. Selenium concentration in sediments in 2000. Values at depth of 0 cm represent Se concentration in the fine organic detrital layer. Error bars are standard deviations of several sampling locations shown in Fig. 2. BUL, sturdy bulrush; BAL, baltic rush; CORD, smooth cordgrass; RAB, rabbitfoot grass; SALT, saltgrass; CAT, cattail; B–W–B, bulrush–widgeon grass–bulrush; T–W–C, tule–widgeon grass–cattail.