Challenges for exposure prediction in ecological risk assessment

A. Di Guardo, J.L.M. Hermens

    Research output: Contribution to journalArticleAcademicpeer-review


    Evaluating organism exposure in the ecosystems is a difficult task and can be carried out measuring or predicting concentrations in the environment. Although current regulatory approaches favor a modeling approach, they either use a static representation of the environment and of the chemical discharge or a simplified dynamic approach (e.g., dealing with pesticides). Improving the ecological realism of exposure prediction offers a number of challenges. Some are related to the understanding of basic mechanisms such as bioavailability and the determination of internal exposure or the need to develop new paradigms for polar and ionized chemicals. Other issues are the need to provide monitoring data to understand the environmental fate of chemical mixtures, polar and ionized chemicals and metabolites, to understand the complexity of exposure in spatially and temporally variable environments. Exposure models require the development of suitable approaches to simulate the complexity of exposure in the ecosystems including the development of a variety of temporal and spatial scenarios and the integration of submodels (such as aquatic and terrestrial food webs). Finally, the integration of dynamic exposure and effect models is envisaged to fully carry out a more realistic ecological risk assessment.
    Original languageEnglish
    Pages (from-to)e4-14
    Number of pages11
    JournalIntegrated Environmental Assessment and Management
    Issue number3
    Publication statusPublished - 2013


    Dive into the research topics of 'Challenges for exposure prediction in ecological risk assessment'. Together they form a unique fingerprint.

    Cite this