Theodor Schräder

Theodor Heinrich Elisabeth Schräder (born June 6, 1904 in Münster , † June 16, 1975 in Dörnfeld an der Ilm ) was a German fisheries biologist and limnologist . The doctor of zoology played a key role in turning the University of Jena into today's center for ecological research in Germany.

Life

Schräder was born in 1904 as the son of the merchant and taxidermist Theodor Schräder and his wife Clara. He graduated in 1922 High School at the gymnasium paulinum and then studied natural sciences at the Ludwig Maximilian University of Munich and the Westphalian Wilhelms University of Münster with a focus on zoology. In 1925 he began to assist Heinrich Jacob Feuerborn at the Zoological Institute of the University of Munich. In 1927 he received his doctorate with a dissertation on the copulatory apparatus of blowflies and then found a job at the Prussian State Agency for Fisheries under the direction of Hans Helmuth Wundsch. His services during his time at the state institute primarily include the development of new quantitative methods for examining bank and soil animals in flowing waters . In 1934 he became a state fisheries expert with the Thuringia regional farmers' association. He looked after both fish and beekeeping there.

With the outbreak of the Second World War , Schräder was called up and after a year was taken prisoner by the Americans . Released in 1945 from American captivity , he became a fish breeding assistant in his father-in-law's carp and trout farm in Gräfinau. Five years later, he took on fishery biology in the Thuringian fishing cooperative. Schraeder devoted himself then at the University of Jena of Hydrobiology , first in 1953 with the leadership of the hydrobiological department and in 1954 as a lecturer. He achieved his habilitation in 1958 with his thesis contributions to limnology and wastewater biology of the Saale dams . In the following year 1959 he became a lecturer at the University of Jena.

In the same year he was also appointed head of a research center for limnology in Jena-Lobeda, which had a branch at Lake Stechlin , where the GDR's first nuclear power plant was built. Accordingly, Schräder, who became director of the research facility after two years, dealt very closely with the ecological consequences of integrating the lake into the cooling water circuit of the adjacent power plant. In the GDR he made great progress with hydrobiology in terms of its performance. In 1962 he founded the Limnologica series .

From 1938 Schräder was married to Gertraud Nöller, whose father ran a pond and fish farm in Gräfinau and with whom he had a son and a daughter.

Works

• About the possibility of a quantitative investigation of the soil and shore fauna of flowing waters . In: Zeitschrift für Fischerei 30, 1932, pp. 105–125.
• Contributions to the limnology and wastewater biology of the Saale dams . 1958.
• The tasks of the biologist in water quality management . In: Monthly report of the German Academy of Science Berlin . 1, 1959, pp. 188-194.
• The research center for limnology of the German Academy of Science in Berlin . In: Limnologica 1, 1962, pp. 1-19.

literature

• Ekkehard Höxtermann: Nature and water protection in the German Academy of Sciences in Berlin - conditions and visions of the 1950s . In: Negotiations on the History and Theory of Biology . 5, 2000, ISBN 3-86135-385-7 , pp. 33-46.
• Ekkehard Höxtermann:  Schräder, Heinrich Theodor Elisabeth. In: New German Biography (NDB). Volume 23, Duncker & Humblot, Berlin 2007, ISBN 978-3-428-11204-3 , p. 512 f. ( Digitized version ).

Individual evidence

1. ↑ ^{a b c} Ekkehard Höxtermann:  Schräder, Heinrich Theodor Elisabeth. In: New German Biography (NDB). Volume 23, Duncker & Humblot, Berlin 2007, ISBN 978-3-428-11204-3 , p. 512 f. ( Digitized version ).