Friedrich Heinrich Helmut Lieth ((1925-12-16)16 December 1925 – (2015-04-16)16 April 2015) was a German ecologist, botanist and phytogeographer. ^{[1] [2]}

Lieth received his doctorate in Biology from the University of Cologne in 1953 and became a private lecturer at the University of Stuttgart-Hohenheim in 1960. He was then visiting professor in Venezuela and Colombia, professor of botany at the University of Hawaii and at the University of North Carolina at Chapel Hill. From 1977 to 1992 he was a professor at the University of Osnabrück where he held the chair for ecology. ^[3]

Helmut Lieth married Magdalena Roth in 1952. The couple had a daughter and three sons. ^[3]

Lieth became widely known through the climate diagram world atlas published together with Heinrich Walter between 1960 and 1967. The descriptive form of climate display (the Walter-Lieth climate diagram ) conceived here received the highest international recognition.

• Walter, Heinrich; Rehder, Helmut; Harnickell, Elisabeth; Lieth, Helmut (1967). Klimadiagramm-Weltatlas [Climate diagram world atlas] (in German). Jena: Gustav Fischer Verlag. OCLC  174864785. with around 8,000 climate stations (around 9,000 diagrams), 33 main maps, 22 secondary maps; published in 3 issues
• Lieth, H., ed. (1974). Phenology and Seasonality Modeling (1 ed.). e-book published: 9 March 2013 ISBN  9783642518638
  • Lieth, H. (1974), "Purposes of a Phenology Book", in Lieth, H. (ed.), Phenology and Seasonality Modeling, vol. 8, Berlin, Heidelberg: Springer, doi: 10.1007/978-3-642-51863-8_1
• Lieth, Helmut; Whittaker, Robert Harding, eds. (1975). Primary Productivity of the Biosphere (1 ed.). Springer-Verlag. ISBN  9783540070832. republished 2011, 2012
  • Lieth, H. (1975), "Modeling the Primary Productivity of the World.", in Lieth, H.; Whittaker, R.H. (eds.), Primary Productivity of the Biosphere, Berlin, Heidelberg: Springer, doi: 10.1007/978-3-642-80913-2_12
• Schlüter, Maja; Savitsky, Andre G.; McKinney, Daene C.; Lieth, Helmut (2005). "Optimizing long-term water allocation in the Amudarya River delta: a water management model for ecological impact assessment". Environmental Modelling & Software. 20 (5): 529–545. doi: 10.1016/j.envsoft.2004.03.005.