Spatial variation of copper and lead concentrations of water hyacinth plants in a wetland receiving urban run-off

p. 33-44The spatial distribution of trace metals within the wetland environment determines their availability to the biota in the immediate area. In this study, metal concentrations in sediments, roots and leaves were found to decrease exponentially with distance from the inflow point. In addition, concentrations were found to be greater in the finer secondary roots as compared to the coarser primary roots. Therefore, sampling of wetlands must allow for these factors when assessing a wetland's pollution status.http://gbic.tamug.edu/request.ht