Hans Los

Freshwater Ecology and Water Quality

+31(0)88335 8549


Hans Los is a specialist researcher and expert advisor with almost 40 years of experience in ecological and water quality issues. He has been involved in numerous studies, often as project leader, scientific coordinator or scientific advisor. His experience covers a vast range of both fresh and marine waters, shallow and deep, floating and stagnant, stratified and mixed. Among these are over 50 different lakes and reservoirs (many shallow Dutch lakes; lake Victoria; reservoirs in Singapore), channels, rivers, estuaries (Netherlands; Venice Lagoon) and coastal seas (i.e. the North Sea). The analysis of this wide range of water systems, mathematical models involving physical, chemical and biological processes have been widely applied as a tool to understand and predict system behaviour. He has played a major role in the development and validation of these models at Delft Hydraulics (now Deltares), particularly with respect to primary production and nutrients. He is the leading expert of Deltares on phytoplankton modelling and creator of the BLOOM model, which is widely applied as part of the Delft software. From 1998 till 2007 he was principal investigator of the ecological discipline at Delft Hydraulics, which meant he advised the general management of the institute on strategic issues, on the selection of (ecological) research projects, and on quality assurance. He has been task leader of several EU-funded projects. He was one of the two research coordinators of the multi institutional, multi disciplinary project on the impacts of a future airport in the North Sea, which involved all the major Dutch marine institutes. In recent years he has intensified his scientific activities and written a considerable number of papers on the development, validation and application of eco-hydrodynamic models, many of which on previously unpublished work, bringing the total up to about 60 scientific papers. In 2009 he received a PhD degree in Enviromental Sciences at Wageningen University for his phytoplankton modelling work.