Experientia

, Volume 48, Issue 10, pp 955–970 | Cite as

Bioaccumulation processes in ecosystems

  • B. Streit
Reviews

Abstract

The fate of environmental pollutants — the various isotopes of elements, and inorganic or organic compounds — is a fundamental aspect of ecology and ecotoxicology, and bioaccumulation is a phenomenon often discussed in this context. Human activities have drastically altered natural concentrations of many substances in the environment and added numerous new chemicals. An understanding of the processes of bioaccumulation is important for several reasons. 1) Bioaccumulation in organisms may enhance the persistence of industrial chemicals in the ecosystem as a whole, since they can be fixed in the tissues of organisms. 2) Stored chemicals are not exposed to direct physical, chemical, or biochemical degradation. 3) Stored chemicals can directly affect an individual's health. 4) Predators of those organisms that have bioaccumulated harmful substances may be endangered by food chain effects. While former theories on the processes of bioaccumulation focused on single aspects that affect the extent of accumulation (such as the trophic level within the food chain or the lipophilicity of the chemical), modern theories are based on compartmental kinetics and the integration of various environmental interactions. Concepts include results from quantitative structure-activity relationships (QSAR), pharmacokinetics, ecophysiology and general biology, molecular genetic aspects and selection, and finally the structure of communities and man-made alterations in them.

Key words

Bioaccumulation bioconcentration BCF pesticides ecotoxicology compartment models QSAR food chain atrazine lindane DDT DDE PCB heavy metals plants earthworms birds 

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Copyright information

© Birkhäuser Verlag 1992

Authors and Affiliations

  • B. Streit
    • 1
  1. 1.Fachbereich BiologieUniversity of FrankfurtFrankfurt am Main(Federal Republic of Germany)

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