... critical, since relativelyL 140 1-frame-C3 Page 44 Monday, April 10, 2000 9:23 AM© 2000 by CRC Press LLC 30 HEAVY METALS IN THE ENVIRONMENT: USING WETLANDS FOR THEIR REMOVAL In this chapter ... algae-scavenging heavy metals in the Upper Bear Creek Reservoir.L 140 1-frame-C3 Page 43 Monday, April 10, 2000 9:23 AM© 2000 by CRC Press LLC 38 HEAVY METALS IN THE ENVIRONMENT: USING WETLANDS FOR THEIR ... was reachedL 140 1-frame-C3 Page 45 Monday, April 10, 2000 9:23 AM© 2000 by CRC Press LLC 44 HEAVY METALS IN THE ENVIRONMENT: USING WETLANDS FOR THEIR REMOVAL Johnson et al. (19 94) suggested three...