Richard Kolkwitz

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Kolkwitzia in the Botanical Garden of Madrid

Richard Kolkwitz (born March 23, 1873 in Berlin ; † April 16, 1956 there ) was a German botanist . Its official botanical author's abbreviation is “ Kolkw. "

Live and act

From 1881 Kolkwitz studied natural sciences at the University of Berlin , especially with Adolf Engler and Simon Schwendener . In 1895 he was promoted to Dr. phil. PhD. From 1895 to 1900 he was a research assistant to Leopold Kny (1841-1916) at the University of Berlin. From 1898 private lecturer for botany and at the same time from 1898 at the Agricultural University Berlin .

From 1901 to 1938 he was head of the Biological Department of the Prussian Research and Testing Institute for Water Supply and Sewage Disposal in Berlin (later the Institute for Water, Soil and Air Hygiene ) and at the same time titular professor of botany at the University of Berlin. From 1946 to 1953 he was a professor with a teaching assignment for botany and from 1951 to 1953 he was also head of the botanical department of the veterinary medical faculty of the Humboldt University in Berlin . In 1954 he became a professor with a teaching position for botany at the Free University of Berlin .

Richard Kolkwitz, together with Maximilian Marsson (1845–1909), developed the basis for the method of biological water quality determination with the saprobic system used today by initially naming approx. 300 plant and 500 animal species (excluding fish) as bioindicators , with the help of which the saprobic levels shaped by them (oligosaprob, alpha- and betamesoprob, polysaprob) are defined.

In Rabenhorst's cryptogam flora of Germany, Austria and Switzerland , Kolkwitz worked on several groups of algae, including the Dinoflagellatae (Peridineae) and the Zygnemales. To determine the number of cells and cell aggregates in phytoplankton , he developed a special device, the Kolkwitzkammer named after him .

In the autobiography of Vincenz Brehm , who met him in Lunz around 1940, Kolkwitz is portrayed as an uncommonly amiable and downright naive person.

Honors

  • The monotypical plant genus Kolkwitzia with the species Kolkwitzia amabilis is named after Kolkwitz.
  • In the Berlin district of Karlshorst , a footpath and cycle path is named after Kolkwitz.

Fonts

  • R. Kolkwitz, M. Marsson: Ecology of the plant saprobia. In: Reports of the German Botanical Society , Volume 26a, pp. 505-519. (1908)
  • R. Kolkwitz, M. Marsson: Ecology of the animal saprobias. Contributions to the teaching of biological water assessment. In: International Review of the Entire Hydrobiology and Hydrography , Volume 2, pp. 126–152. (1909)
  • The current status of the new biological wastewater treatment process with activated sludge (1926)
  • The facility area of ​​the State Institute for Water, Soil and Air Hygiene, Berlin-Dahlem, in botanical-biological terms . League of Nations ([Gent] 1927)
  • Small Atlas of Salt Plants / Lfg. 1 / Spring and Summer Bloomers (1927)
  • The flora around Berlin (1933)
  • Plant physiology: experiments and observations on higher and lower plants including bacteriology and hydrobiology with plankton science . Fischer, Jena 1935
  • Zygnemales . Akad. Verl.-Ges., Leipzig 1941
  • Dr. L. Rabenhorst's Kryptogamen-Flora ... / Vol. 13, Section 2, Series 3 / Systematic Part (1941)
  • Dr. L. Rabenhorst's Kryptogamen-Flora ... / Vol. 13, Dept. 2, Lfg. 2 / Systematic part (1941)
  • Dr. L. Rabenhorst's Kryptogamen-Flora ... / Vol. 13, Section 2, Series 1 / General Part and Literature and Register (1941)
  • Simple studies of soil and water with views of soil and hydrology . Fischer, Jena 1941
  • Saprobia Ecology . Piscator, Stuttgart 1950

Web links

Individual evidence

  1. ^ Richard-Kolkwitz-Weg. In: Street name lexicon of the Luisenstädtischer Bildungsverein (near  Kaupert )
personal data
SURNAME Kolkwitz, Richard
BRIEF DESCRIPTION German botanist
DATE OF BIRTH March 23, 1873
PLACE OF BIRTH Berlin
DATE OF DEATH April 16, 1956
Place of death Berlin