My expertise is on farming systems research, combining agricultural and environmental sciences. I use modelling, field experimentation and surveys to investigate the determinants of land productivity and the impacts on food security. Since 2005, I have been conducting research on adaptation and mitigation of climate change on farming systems. This research looks for incentives for land users to improve crop and livestock productivity and to reduce GHG emissions to the atmosphere.

1) Land use impacts on water supply, and greenhouse gas emissions

2) Food security, farm productivity, and greenhouse gas emissions from agriculture

3) Adaptation of agricultural systems to climate change

4) The use of leguminous plants for food, feed and to restore degraded ecosystems

European Society of Agronomy, Member

European Journal of Agronomy, Editorial board

Agricultural Systems Journal, Editorial board

Livestock Environmental Assessment and Performance (LEAP) Partnership

Njue, Naomi. 2016-2019: Potential for citizen science in water and forest resources management in tropical ecosystems. Justus-Liebig-University, Giessen, Germany

Jacobs, Suzanne. 2014-2017: Effects of deforestation and forest degradation on water and nutrient cycling in highlands of Kenya. Justus-Liebig-University, Giessen, Germany

Wanyama, Ibrahim. 2013-2017: Land use and land use change effects on soil GHG fluxes in the Mau forest. Freiburg University

Brandt, Patric. 2014-2018: Targeting climate-smart agriculture (CSA) in East Africa. Wageningen University

Carter, Sarah. 2013-2017: Integrated monitoring for estimating GHG emissions from forests and agriculture in tropical countries. Wageningen University

Ng’ang’a, Stanley. 2012-2017: Exploring household adaptations strategies to climate change in smallholder farmers in Sub-Saharan Africa. Wageningen University