![Johannes Iversen biography](https://upload.wikimedia.org/wikipedia/commons/thumb/0/05/Iversen_Johs.jpg/233px-Iversen_Johs.jpg)
Johannes Iversen
Geologist, Deceased Person
1904 – 1972
Who was Johannes Iversen?
Johannes Iversen was a Danish palaeoecologist and plant ecologist. He was born in Sønderborg and began studies in botany at the University of Copenhagen in 1923 under professor C.H. Ostenfeld, and with considerable inspiration from prof.em. Christen Raunkiær. At first he worked with macrophyte vegetation of lakes in relation to water pH. The influence from Raunkiær is particularly evident in Iversen‘s doctoral thesis, in which he divided herbaceous plants into hydrotypes based on experiments and morphological studies: xerophytes, mesophytes, hygrophytes, telmatophytes, amphiphytes and limnophytes. In addition, halobio-types were described. He brilliantly used modern equivalents in the interpretation of pollen diagrams, e.g. his now classic studies on frost damage to ivy and holly during the severe winters of the early 1940s led to their fossil pollen being used as climate indicators. Iversen demonstrated the steppe and tundra components of the late glacial flora. Iversen conducted a practical experiment with stone axe clear-cutting and slash-and-burn agriculture in a primeval forest to study the forest regeneration. Iversen was state geologist at the Danish Geological Survey and lecturer in pollen analysis at the University of Copenhagen. He was awarded honorary doctorates at Uppsala University and Cambridge University.
We need you!
Help us build the largest biographies collection on the web!
Citation
Use the citation below to add to a bibliography:
Style:MLAChicagoAPA
"Johannes Iversen." Biographies.net. STANDS4 LLC, 2024. Web. 10 Jun 2024. <https://www.biographies.net/people/en/johannes_iversen>.
Discuss this Johannes Iversen biography with the community:
Report Comment
We're doing our best to make sure our content is useful, accurate and safe.
If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly.
Attachment
You need to be logged in to favorite.
Log In