Otto Jaag

Otto Jaag (* 29. April 1900; † 31. July 1978) was one of the first and most influential hydraulic biologists in Europe. From 1945 to 1970 he was a professor for hydrology, waste water purification and water protection at the ETH Zurich.

At the beginning of its activity at the ETH Zurich 1932 Otto Jaag was concerned first with Hydrobiologie, Kryptogamenkunde, plant pathology and Botanik. 1945 he was appointed the professor for special Botanik, until 1970 was he a professor for hydrology, waste water purification and water protection. Jaags interests extended also over related areas like the garbage research up to questions of blue alga systematics.

Otto Jaag recognized early the meaning of a comprehensive waters and environmental protection and contributed during decades considerably to the research in this area. It was member in numerous national and international organizations and commissions, which dedicated themselves to the water protection. As a director of many years it succeeded to the Swiss federal institute for water supply, waste water purification and water protection (EAWAG) to it to put beside the scientific also a political foundation for the water protection.

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