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Ecotoxicology – How to Assess the Impact of Toxicants in a Multi-Factorial Environment?

Conference paper
Part of the NATO Science for Peace and Security Series book series (NAPSC)

Ecotoxicology assesses the fate of contaminants in the environment and contaminant effects on constituents of the biosphere. With respect to effects assessment, current ecotoxicology uses mainly reductionistic approaches. For concluding from the reductionistic approach to the effects of toxicant exposure in a multifactorial world, ecotoxicology relies on extrapolations: (i) from suborganism and organism effect levels, as determined in laboratory tests, to ecological levels, (ii) from few laboratory test species to the broad range of species and their interactions in the ecosystem and (iii) from the analysis of the effects of single toxicants under standardized laboratory settings to the toxicant response under real world conditions, where biota are exposed to combinations of chemical, biological and physical stressors. The challenge to ecotoxicology is to identify strategies and approaches for reducing uncertainty and ignorance being inherent to such extrapolations. This chapter discusses possibilities to improve ecotoxicological risk assessment by integrating mechanistic and ecological information, and it highlights the urgent need to develop concepts and models for predicting interactions between multiple stressors. Keywords: ecotoxicology; risk assessment; effect propagation; interspecies extrapolation; multiple stressors

Keywords

Ecological Risk Assessment Environ Toxicol Mixture Effect Species Sensitivity Distribution Toxicant Exposure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer 2007

Authors and Affiliations

  1. 1.Centre for Fish and Wildlife Health, Vetsuisse FacultyUniversity of BernSwitzerland

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