Arthur D. Hasler

Arthur Davis Hasler (January 5, 1908 – March 23, 2001) was an ecologist who is credited with explaining the salmon's homing instinct.

[3] Hasler pioneered a research method based on manipulation of entire lake ecosystems.

[1] He married Hanna Prusse in 1932, and they had six children: Sylvia, A. Frederick, Bruce, Galen, Mark, and Karl.

[1][4] Hasler was an analyst with the Air Force Strategic Bombing Survey based in Germany after World War II.

[5] Subsequently, Hasler was on the faculty of the University of Wisconsin–Madison for 41 years and under his leadership it became a hub for lake research.