Fritz H. Schweingruber, pioneer of tree-ring research and wood anatomy, passed away on January 7, 2020, at the age of nearly 84. Fritz was born on February 29, 1936, in Krauchthal (Canton Bern, Switzerland). From 1956 to 1965, he was a primary school teacher and an organist. Although he liked teaching, he discovered his curiosity for botany and archaeology. This was the beginning of what turned out to be an outstanding scientific career. He enrolled at University of Bern and took classes in botany, zoology, geology and pre- and early history. In 1972, he obtained his doctorate in botany from the University of Basel, where he was appointed professor in 1976.

Since 1971, Fritz was based at the Swiss Federal Institute for Forest, Snow and Landscape Research WSL (Birmensdorf, Switzerland), where he established one of Europe's first tree-ring labs, which developed into...

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