Mechanistic modelling for ecotoxicology and ecology

DEBtox Researc

Contact details

I don't have a secretary, and I try to avoid distractions when I'm working on a tough problem. Therefore, I prefer to let the (initial) communication run through email. You can reach me through tjalling(at) I check e-mail regularly, so normally you can expect a response within two (working) days.

Relevant links

  • My other website,, contains a huge amount of information on DEB-based and GUTS modelling in eco(toxico)logy. It includes Matlab software (the BYOM package), (links to) e-books, lists of publications, etc.
  • Roman Ashauer's website about models in ecotoxicology at: His site contains many more useful links for the modelling enthousiast.
  • The website is dedicated to robust and user-friendly software to run GUTS analyses. It offers free downloads for a standalone Windows version as well as a Matlab-based version. As of 25 February 2021, version 1.1 of the standalone of openGUTS is available for download. This version corrects an error and adds some new batch functionality. See openGUTS download page. Version 1.0 of this software was developed in a Cefic-LRI funded project.
  • The website contains the user-friendly on-line tool to extrapolate a DEBtox2019 calibration to one or more exposure profiles (EPx calculation).
  • The DEB portal, for all things related to DEB theory (but excluding DEBkiss and its derivatives).

DEBtox Research,, Chamber of Commerce Utrecht 62405055, email: tjalling (at)