Vannak ANN is an eco-hydrologist holding a PhD in Water Science and Technology from Universitat de Girona, Spain. For his doctoral research, Dr. Ann focused mainly on sediment physical characteristics affecting biogeochemical processes in the riverbed - especially, the biofilm biomass and enzymatic activity in hyporheic zones. He completed a Master (DEA, in French) in Agricultural Sciences and Biological Engineering from Faculté universitaire des Sciences agronomiques de Gembloux, Belgium - in 2009, it was merged with the University of Liège and was renamed to Gembloux Agro-Bio Tech; and a Degree/Diploma (the 5 years French education system) in Rural Engineering from Institut de Technologie du Cambodge, Cambodia. At present, the main focus of his research is the application of statistics and machine learning techniques: 1) to ascertain, especially in the context of multi-stressors, the relationships between water-soil-plant and microorganisms (e.g., bacterial structure and biodiversity functioning in soil and water) together with ecosystem components in the Tonle Sap Lake of Cambodia as well as 2) to try and predict what may happen to those microorganisms in the future. And also, he is interested in modeling hydrological processes (in a river basin) and climate change-related topics.