| responses of aquatic organisms to metal pollution in a lowland river in flanders: a comparison of diatoms and macroinvertebrates. | the role of macroinvertebrates and diatoms as indicator for metal pollution was investigated by assessing both biota along a metal gradient in the belgian river the dommel. macroinvertebrates and diatoms were sampled in summer and winter and physical-chemical characteristics of the water were measured at four different sample periods and related to sediment characteristics. although metal concentrations, except cadmium, in the water nowhere exceeded water quality standards, high metal concentrat ... | 2008 | 18778849 |