Edwin Hes

Senior Lecturer in Environmental Systems Analysis


Edwin Hes obtained an MSc from Wageningen University in 1998, specializing in environmental science and technology and a PhD in 2021 on nutrient retention in wetlands (Find the link to the thesis here). From 1999 to 2002 he worked for the Dutch Ministry of Economic Affairs as a public consultant on European research grants. In 2002, he started at IHE Delft Institute for Water Education and worked for the Liaison Office until 2007. Later that year, he started working as a Lecturer in Environmental Systems Analysis. His main research interests during the past years have been sustainable use of wetlands and modelling nutrient flows in wetland ecosystems, especially in papyrus wetlands in East Africa. He is interested in the use of models to study ecosystem functions and services and to evaluate socio-ecological systems. At IHE Delft, he has been coordinating the Environmental Science programme from 2012 to 2016 and the joint degree programme in Limnology and Wetland Management from 2012 until present. Hes has been involved with teaching and training activities in the fields of Environmental Systems Analysis, Environmental Modelling and Wetland Management. In his educational activities he works with partner institutes from Kenya (Egrton University), Austria (BOKU), Mexico (LANCIS-UNAM) and the Netherlands (WUR-CDI). Since 2007 Hes has worked in research and capacity building projects in more than 20 countries in Asia, Africa and Latin America with a focus on sustainable use of wetlands. Mr Hes is an experienced facilitator and moderator in an international (development) setting.

Research Summary

Areas of interest: wetland ecology, wetland management, environmental modelling, ecosystem services, wetland assessment



Hes EMA, Yatoi R, Laisser SL, Feyissa AK, Irvine K, Kipkemboi J, van Dam AA (2020) The effect of seasonal flooding and livelihood activities on retention of nitrogen and phosphorus in Cyperus papyrus wetlands, the role of aboveground biomass. Hydrobiologia 848: 4134-4152

Janse JH, De Klein JJM, Van Dam AA, Hes EMA, Van Beek R, Wallnofer I, Verhoeven JTA (2021) Calibration of a global model for regulating ecosystem services of inland wetlands. Presentation at INTECOL 2021

Hes EMA, Wallnofer I, van Dam AA (2020) Parameterisation of the GLOBIO wetland model - Project number S550028. Report, IHE Delft Institute for Water Education, Delft, The Netherlands

Hes EMA, van Dam AA (2019) Modelling nutrient cycling and retention in African wetlands with emergent vegetation (Cyperus papyrus). Environmental modelling and software 122:104531. https://doi.org/10.1016/j.envsoft.2019.104531

Janse, JH, van Dam AA, Hes EMA, de Klein JJM, Finlayson CM, Janssen ABG, van Wijk D, Mooij WM, Verhoeven JTA. (2019) Towards a global model for wetlands ecosystem services. Current Opinion in Environmental Sustainability 36:11-19

Janse J, de Klein J, van Dam AA, Hes EMA (2018) Towards a global model for wetland biogeochemistry and ecosystem services. Poster presented at the 12th International Symposium on Biogeochemistry of Wetlands, 23-26 April 2018, Coral Springs, FL, USA.

Hes E.M.A., Tran Duy A. and van Dam A.A. (2016) The Papyrus Simulator, Modelling Nitrogen and Phosphorus Cycling in Natural Rooted Papyrus Wetlands. Presented at 10th INTECOL International Wetlands Conference, 19-24 September 2016, Changshu, China

Van Dam A.A., Hes E.M.A. and Janse J.H. (2016) Key characteristics of a generic model for ecosystem services of inland wetlands: a synthesis based on a review of existing models. Presented at 10th INTECOL International Wetlands Conference, 19-24 September 2016, Changshu, China

Hes E.M.A., Niu R. and van Dam A.A. (2014) A simulation model for nitrogen cycling in natural rooted papyrus wetlands in East Africa. Wetlands Ecol Manage. 22:157-176

Gope E.T., Sass-Klaassen U.G.W., Irvine K., Beevers L. and Hes E.M.A. (2015) Effects of flow alteration on Apple-ring Acacia (Faidherbia albida) stands, Middle Zambezi floodplains, Zimbabwe. Ecohydrology. 8 (5), 922-934

Gettel, G.M. A. A. van Dam, E. Hes, A. Rural Agricultural development in wetlands in sub-Saharan Africa: Implications for nitrogen retention. Joint Aquatic Sciences Meeting, Portland Oregon May 2014

Senteu J.S., Kipkemboi J.K., Hes E.M.A. and Kimwaga R.J. (2014) Optimisation of nitrogen transformation and removal processes in a hybrid tropical constructed wetland. Proceed. of the 15th WaterNet/WARFSA/GWP-SA Symposium, Lilongwe, Malawi

Ncube S., Beevers L. and Hes E.M.A. (2013) The interactions of the flow regime and the terrestrial ecology of the Mana Floodplains in the Middle Zambezi river basin. Ecohydrology. 6(4), 554-566

Hes, E.M.A., Niu, R. and van Dam, A.A. (2012) A simulation model for nitrogen and phosphorus retention in seasonally flooded and permanently flooded wetlands in East Africa. Presented at 9th INTECOL International Wetlands Conference, 3-8 June 2012, Orlando, Florida, United States.

Guzman-Ruiz A., Schwartz, K.H. and Hes, E.M.A. (2011) Shifting Governance Modes in Wetland Management: A Case Study of two Wetlands in Bogota, Colombia. Environment and Planning C 29, pp 990-1003.

Hes, E.M.A. and Charli-Joseph, L.E. (2010) IWRM and Environmental Flows principles to support management of the Gulf of Mexico Large Marine Ecosystem. Presented at the Regional International Forum: "From the rivers to the Gulf of Mexico, towards and ecosystem management approach", 27 and 28 September 2010, Mexico City, Mexico.

Babu, M.A., Hes E.M.A., van der Steen N.P., Hooijmans, C.M., and Gijzen, H.J (2010) Nitrification rates of algal-bacterial biofilms in wastewater stabilization ponds under light and dark conditions. Ecological Engineering 36 (12), pp.1741-1746.

Rickwood C.J., Hes E.M.A., Al-Zu'bi Y. and Dube M.G. (2010) Overview of limitations, and proposals for improvement, in education and capacity building of Ecohydrology. Ecohydrology and Hydrobiology 10 (1), pp. 45-59.

Schouten, M.A.C., Hes E.M.A. and Hoko, Z. (2009) Innovative Practices in the African Water Supply and Sanitation Sector. SUN MeDIA, Stellenbosch, South Africa

Hes, E.M.A., van Dam A.A. and O’Keeffe, J.H. (2008) Quantifying wetland ecosystem functions : a review. Presented at 8th INTECOL International Wetlands Conference, 21-25 July 2008, Brazil.

Dam, A.A., Namaalwa, S., Kaggwa R.C., Hes, E.M.A., Kansiime, F. (2008) Influence of agriculture on nutrient regulation functions of papyrus wetlands in Uganda. Presented at 8th INTECOL International Wetlands Conference, 21-25 July 2008, Brazil.


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