What is the significance of using biological data in deriving PEC values?

The significance of using biological data in deriving Probable Effect Concentration (PEC) values lies in its ability to reflect the actual toxicological responses of organisms to substances in their environment. This approach takes into account real-world interactions and effects that organisms experience when exposed to various contaminants. By incorporating empirical biological data, assessments can more accurately represent how substances affect living organisms, allowing for better predictions of ecological impacts.

Biological data is grounded in observed toxic effects and behavioral responses in laboratory and field studies, providing a robust foundation for estimating the potential harm that contaminants could cause in natural settings. This evidence-based approach contributes to developing more reliable PEC values, leading to more informed and effective environmental management and regulation decisions.

On the other hand, while theoretical estimates and simplified assessments can have their merits, they lack the specificity and relevance that biological data provides. Utilizing biological data ensures that assessments align closely with the realities of environmental conditions and organismal responses.