Repository containing data and code related to the manuscripts: Nijzink, R. C., Beringer, J., Hutley, L. B., and Schymanski, S. J.: Step-wise modifications of the Vegetation Optimality Model, Geosci. Model Dev. Discuss. [preprint], https://doi.org/10.5194/gmd-2021-151, in review, 2021 Nijzink, R. C., Beringer, J., Hutley, L. B., and Schymanski, S. J.: Does maximization of net carbon profit enable the prediction of vegetation behaviour in savanna sites along a precipitation gradient?, Hydrol. Earth Syst. Sci. Discuss. [preprint], https://doi.org/10.5194/hess-2021-265, in review, 2021