... were started in June 1991 and a period of 2 months was designated for the
stabilization of seedlings and the development of a small ecosystem in the container. Figure 7 .2
shows the average addition ... of seedlings over the 16 months of growth starting in August
1991. Both cypress and gum are deciduous, dropping leaves in November and replacing them in
April. Thus, t...
... ENVIRONMENT: USING WETLANDS FOR THEIR REMOVAL
Figure 9.7
Lead content in parts per million in soils of uplands surrounding the Biala Riv
er wetland.
Wetland
20 0
20 0
20 0
20 0
20 0
20 0
L1401-frame-C9 ...
1 12 HEAVY METALS IN THE ENVIRONMENT: USING WETLANDS FOR THEIR REMOVAL
Figure 9.16
Reduction in concentrations of lead in waters du...