This is the R implementation of the tri-phasic concentration-response model introduced in
[Liess, M., Henz, S. & Knillmann, S. Predicting low-concentration effects of pesticides. Sci Rep 9, 15248 (2019).](https://doi.org/10.1038/s41598-019-51645-4)
It allows modeling of ecotoxicological experiments where the response shows signs of a hormesis effect.
[Liess, M., Henz, S. & Knillmann, S. Predicting low-concentration effects of pesticides. Sci Rep 9, 15248 (2019)](https://doi.org/10.1038/s41598-019-51645-4). It allows modeling of ecotoxicological experiments where the response shows signs of a hormesis effect.
The EC<sub>x-SyS</sub> and Multi-TOX models from this package are also available as part of the [Indicate app](http://www.systemecology.eu/indicate) which offers a graphical user interface.
## Installation
Stressaddition is not on CRAN. You can install the most recent stable version from GitLab using the remotes package: