Tree and Carbon Calculations Carbon calculations are now a formal part of Assisi Manager, meaning they have their own equations and fields in the Assisi database. The equations include whole tree as well as stem, branch, foliage and bark components. As with many equations in Assisi, these can be entered as user defined equations so that you can enter equations specific to your species and regions. Stratified Calibrations Calibrations in Assisi are the entire collection of tap