Agriculture Reference
In-Depth Information
pollutants in their tissues as an integrative estimate of the degrees of pollution is an attractive idea
fraught with practical difficulties. Closely related earthworm species differ in the way they accu-
mulate pollutants, and factors such as age, size, season, and diet can influence rates of accumulation.
To use earthworms effectively as biomonitoring tools, it is important to know their body burdens
of any particular toxic chemical and to understand the various pathways of metabolism and
detoxification. Ecological risk assessment essentially requires an interdisciplinary approach, and
earthworm researchers should be aware of useful developments and approaches in other fields. The
incorporation of earthworm biomarkers in risk assessment schemes for soils may in the future
contribute to a more scientific basis in decision making.
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