How does bioturbation influence soil hydro-physical dynamics and modify landscapes?

The aim of this PhD is to better understand the influence that bioturbation has soil hydro-physical dynamics. Although is it well know the engineering function of burrowing animals, still it is not clear the trade of between their presence and soil structure characteristics, and especially at different spatial and temporal scale. Therefore, during this PhD I will use different techniques such as reconstruction methods and rainfall simulation to unravel the influence of bioturbation and then insert the burrowing animal activity into a landscape evolution model, able to simulate it.