After his graduation from University of Ibadan, Prof. Larwanou Mahamane was recruited by the National Institute for Agricultural Research of Niger (INRAN) in 1994 as a research scientist in the Forestry Department. Driven by his passion for academics, Prof. Larwanou left INRAN in 2006 to join the University of Niamey as a lecturer and research scientist in Ecology and Agroforestry. He held that position till August 2008 when he joined the African Forest Forum (AFF) at the World Agroforestry Centre (ICRAF) in Nairobi, Kenya as Senior Programme Officer and Head of Programmes Management Unit of that institution until July 2018.

Larwanou left African Forest Forum (AFF) to the International Centre for Research in Semi-Arid Tropics (ICRISAT) in Niamey, Niger as a Senior Scientist in Climate Smart Agriculture from July 2018 to October 2020 when he decided to come back to University of Niamey as a full Professor in forest ecology/agroforestry to date. His areas of special interests include: forest ecology, agroforestry, vegetation dynamics, climate smart agriculture, climate change, forest-water relation in dry lands. He has developed and updated various agroforestry technologies aimed at improving parkland systems in the Sahel. Professor Larwanou has published more than 90 scientific papers in peer reviewed scientific journals and coordinated many scientific collaborative research projects. He is a member of various professional associations and technical working groups at national, regional and international levels. Prof Larwanou is the current Chair of the Governing Council of the African Forest Forum.