Dr. Johan Six
Dr. Johan Six
Dr. Six has led and been involved in many projects investigating the effect of land use change and management on greenhouse gas fluxes in agricultural, grassland and forest ecosystems across the globe, but with an emphasis on the US and Africa. In his work, he has a focus on the feedbacks between ecosystem management options (e.g., tillage, cover cropping, green manuring, sustainable farming, and grazing), global change (e.g., elevated CO2 and climate change), and biogeochemical cycling. Recently, he has also more of an emphasis on landscape analyses and global Food Security. More specifically, his group studies the complex interactions between soil (e.g, structure, texture and mineralogy), plants (e.g., diversity, nutrient uptake, and root growth), soil biota (e.g. fungi, bacteria, and earthworms), and the carbon and nitrogen cycles in agroecosystems.
The general approach is to conduct experimental work from the micro- to landscape scale and subsequently integrate it with modeling to interpolate and extrapolate it to the regional and global scale. The modeling has also as goals to identify gaps in our knowledge, generate testable hypotheses, and test the mechanistic bases of biogeochemical models. Furthermore, bio-economic modeling is conducted in collaboration with economic and social scientist to holistically assess the sustainability and resilience of agriculture and food value chains.