übertool: web applications for ecological risk assessment (beta version)
Cloud-based environmental models used by the USEPA for evaluating pesticide risks to ecosystems under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and the Endangered Species Act (ESA).
| Description | Inputs | Algorithms | References | Contact Us

Leslie Model with Logistic Dose Response Model Overview


Traditionally, ecological risk assessment of pesticides is based on the risk, between measured environment concentrations and laboratory tested concentrations which cause biological effects. This approach has several drawbacks:

  • difficult to relate risk ratios to ecological values (e.g., population size)
  • safety factors used in estimating risk ratios contain great uncertainty which easily cause over or under protection

  • As a solution, adding population models to the ecological risk assessment process can bridge the gap between measurements and protection goals in the following aspects:

  • reduce uncertainty in extrapolation individual level to population level
  • identify worse scenarios with less effort
  • integrate the effects of multiple stresses
  • reduce the use of laboratory animals