Rolf Geisler

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Rolf Geisler (born April 27, 1925 in Hamburg-Altona ; † January 25, 2012 in Gundelfingen (Breisgau) ) was a German fishery biologist, limnologist and aquarist .

Life

Geisler became an aquarist as a schoolboy and in 1939 he joined the Association for Aquarium and Terrarium Friends eV in Hamburg Roßäßler . Here he got the opportunity to get to know prominent aquarists and ichthyologists who recognized and promoted his scientific interest, including Werner Ladiges , Johann Paul Arnold , Arthur Rachow and Hermann Meinken . The book "The Fish in the Landscape" by Werner Ladiges had a great influence on Geisler's professional career. After studying zoology, botany, fisheries science and geography at the University of Hamburg between 1945 and 1949, he received his doctorate in natural sciences in 1950 . From 1950 to 1954 Geisler worked as a research assistant at the Institute for Fisheries Science at the University of Hamburg. From 1954 to 1971 he headed the Freiburg (Breisgau) branch of the Baden-Württemberg State Office for Hydrology. From 1971 to 1988 he worked as an expert on fisheries issues.

In 1968 he became a lecturer in applied limnology at the Albert Ludwig University of Freiburg . In 1977 he was appointed honorary professor at this university. Geisler undertook research trips on behalf of the Max Planck Institute for Limnology , Tropical Ecology Department , the Society for Technical Cooperation (GTZ) and the Institute for Scientific Cooperation, which took him to Brazil, Bolivia, Peru, Sudan, Saudi Arabia, Sri Lanka, Indonesia, Taiwan, Thailand and Hong Kong led. In the Amazon region, he discovered almost 30 new fish species, which, as he was not a taxonomist himself, he had specialists describe. In 1969 he published his only first description of Corydoras baderi , a species that he dedicated to his friend Herbert Bader. In February 1967 Geisler collected the last known specimens of the possibly extinct barbel species Balantiocheilos ambusticauda in the marshland of Bueng Boraphet in the Thai province of Nakhon Sawan , which Ng Heok Hee and Maurice Kottelat used in 2007 as type specimens for the first scientific description.

In 1988 Geisler retired.

Dedication names

Several species of fish have been named after Geisler, including Schistura geisleri , Apistogramma geisleri , Iguanodectes geisleri , Microschemobrycon geisleri and Hemigrammus geisleri . Geisler's wife Sieglinde was honored with the epithet of the species Axelrodia lindeae .

Fonts (selection)

  • Werner Ladiges, Rolf Geisler: Tropical fish - With a contribution about their breeding , 1954
  • Rolf Geisler: Aquarium Fish Diseases , 1960
  • Rolf Geisler: Aquarium Water Chemistry , 1963
  • Rolf Geisler: Water science for aquaristic practice , 1964
  • Kaspar Horst, Rolf Geisler, Rudolf Lörz, Horst E. Kipper: Nutrition of the aquarium fish In: Aquarium Today , April 1987

literature

  • Axel Zarske, Jacques Gery: On the eightieth birthday of Prof. Dr. rer. nat. Rolf Geisler , Zoologische Abhandlungen (Dresden) 55, 2005, pp. 7–8

Individual evidence

  1. ↑ Obituary notice Dr. Rolf Geisler
  2. ↑ Ng, Heok Hee; Kottelat, Maurice Balantiocheilos ambusticauda, ​​a new and possibly extinct species of cyprinid fish from Indochina (Cypriniformes: Cyprinidae) . Zootaxa 1463, 2007: 13-20.
personal data
SURNAME Geisler, Rolf
BRIEF DESCRIPTION German fisheries biologist, limnologist and aquarist
DATE OF BIRTH April 27, 1925
PLACE OF BIRTH Hamburg-Altona
DATE OF DEATH January 25, 2012
Place of death Gundelfingen (Breisgau)