Hes has been involved with teaching and training activities in the fields of Environmental Systems Analysis, Environmental Modelling and Wetland Management. 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. He is interested in the use of models to study ecosystem functions and services and to evaluate social-ecological systems. 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. Later that year, he started working as a Lecturer in Environmental Systems Analysis. In 2002, he started at IHE Delft Institute for Water Education and worked for the Liaison Office until 2007. From 1999 to 2002 he worked for the Dutch Ministry of Economic Affairs as a public consultant on European research grants. These findings can help determining optimum harvesting strategies for constructed and natural wetlands, and contribute to the quantification of ecosystem services and an evidence-based adaptive management approach for African wetland landscapes.Įdwin Hes obtained an MSc from Wageningen University in 1998, specializing in environmental science and technology. The model demonstrated that controlled harvesting can increase nutrient retention by up to 40%, but overharvesting leads to the release of nutrients. Then, a dynamic simulation model (Papyrus Simulator) based on the hydrological and ecological wetland processes showed that assimilation, mortality, decay, re-translocation, nutrient inflow and soil porosity were the most influential factors. First, field experiments investigated nitrogen and phosphorus retention, showing that papyrus grows faster with disturbance from human activities or flooding, but produces less biomass and stores less nutrients. Combining increased agricultural production with wetland conservation is urgently needed. The research presented in this book consisted of two parts. With an increasing demand for food, papyrus wetlands are at risk of conversion to agriculture and losing these ecosystem services. They are also an integral part of the culture of African wetland communities. For both formats the functionality available will depend on how you access the ebook (via Bookshelf Online in your browser or via the Bookshelf app on your PC or mobile device).Īfrican papyrus ( Cyperus papyrus L.) wetlands provide water, food and materials to millions of people, and perform important landscape functions such as water and nutrient storage, habitat provision for fish, birds and other wildlife. Where the content of the eBook requires a specific layout, or contains maths or other special characters, the eBook will be available in PDF (PBK) format, which cannot be reflowed. Most VitalSource eBooks are available in a reflowable EPUB format which allows you to resize text to suit you and enables other accessibility features. System requirements for Bookshelf for PC, Mac, IOS and Android etc.Bookshelf Online Browser version support ».Learn More about VitalSource Bookshelf ».Offline Computer – Download Bookshelf software to your desktop so you can view your eBooks with or without Internet access.Mobile/eReaders – Download the Bookshelf mobile app at or from the iTunes or Android store to access your eBooks from your mobile device or eReader. ![]() The free VitalSource Bookshelf® application allows you to access to your eBooks whenever and wherever you choose. Routledge & CRC Press eBooks are available through VitalSource.
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