About IEES

IEES is a non-profit organization seeking to:

  • promote and advance a broad view of Ecological Engineering (working definition of IEES)
  • facilitate and improve the cooperation between ecologists, engineers and other scientific fields;
  • promote the exchange on Ecological Engineering issues between scientific and educational organizations, private enterprises, non-governmental organizations and governmental bodies;
  • support the development of a common Ecological Engineering curriculum;
  • raise the awareness of Ecological Engineering practice worldwide.

IEES core groups

  • IEES advisory board (contact Andreas Schoenborn, co-president)
  • IEES activity board (contact Raffael Kaenzig, co-president)
  • Working group “International Ecological Engineering Curriculum” (contact Glenn Dale)

IEES advisory board







Andreas Schoenborn, IEES co-president
Lecturer & researcher
Zurich University of Applied Science, Institute of Natural Resources Science, Waedenswil, Switzerland,

Tjaša Griessler Bulc
Lecturer & researcher
University of Ljubljana,
Faculty of Health Sciences & Faculty of Civil and Geodetic Engineering,
Ljubljana, Slovenia







Tess Thompson
Associate Professor & Turner Faculty Fellow
Virginia Polytechnic Institute and State University USA

Mark Dyer
Dean of the School of Engineering
University of Waikato NZ







David Austin
Senior Ecologist ESA at Jacobs USA






IEES activity group







Raffael Kaenzig

Raffael Kaenzig, IEES co-president

Entrepreneur, Phoster Ltd. Switzerland

“support solutions to enable future generations to live on a resilient planet”


Pascal Geiger






















History of IEES

First annual meeting in June 1994.
First annual meeting in June 1994.

The idea to bring together experts and conduct Ecological Engineering activties within an international society was born at the 1st Conference on Ecological Engineering in Stensund, Sweden in 1991.

The Stensund Ecological Center with its ‘Vattenbruket’, a Wastewater Aquaculture greenhouse demonstrating Ecological Engineering principles of closed nutrient cycles served as a unique crystallization point.

Two years later, in October 1993 the society was officially founded in Utrecht, Netherlands by thirteen engaged participants.

The first annual meeting was held in June 1994 in Stangvik, Norway

First annual meeting in June 1994.
Since then the network has been spanning widely around the globe with its headquarter today located in Switzerland at ZHAW Wädenswil.