International Livestock Research Institute (ILRI)
Sonja Leitner is an ecologist and biogeochemist working on carbon and nitrogen cycling in natural and agricultural ecosystems. She is a scientist at the International Livestock Research Institute (ILRI) in Kenya and investigates nutrient transformations and nutrient losses via leaching and gaseous emissions, with a special focus on greenhouse gas emissions (CO2, CH4, N2O). Currently, her research focuses on options for soil and manure management that reduce nutrient losses to improve livestock productivity and help to mitigate climate change. She works in both mixed crop-livestock systems as well as rangelands and is currently involved in projects in Kenya, Ethiopia, Uganda, and Tanzania.