Uni.-Prof. em. Helmut Freitag - Research Information System | University of Kassel - CONVERIS Research Information System

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Prof. em. Dr. Helmut Freitag

Projects as Principal Investigator

01/2010 - 12/2012	Phylogenie, Systematik, Biogeographie und Evolution der Gattung Suaeda, Untergattung Brezia (Chenopodiaceae)
08/2008 - 12/2010	Systematik und Evolution von Suaeda, Untergattung Brezia (Chenopodiaceae).
10/2000 - 12/2009	Molekulare Systematik der Chenopodiaceae und Evolution des C4-Photosynthesesyndroms
1994 - 1995	Transektuntersuchungen am Aralsee
1993 - 1997	Veränderungen der Grünlandvegetation in ausgewählten Berg- und Talregionen in Nord- und Mittelhessen seit 1950
1991 - 1996	Die Quellen des Landkreises Kassel, ihre Pflanzenwelt und ihre Schutzwürdigkeit
1990 - 2005	Revision der altweltlichen Arten der Gattung Ephedra
12/1983 - 12/2005	Taxonomische Bearbeitung altweltlicher Chenopodiaceen (Salsoloideae, Suaedoideae)

Publications

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2008	Lomonosova, M., Brandt, R., Freitag, H., 2008. Suaeda corniculata (Chenopodiaceae) and related new taxa from Eurasia. Willdenowia 38, 81–109.
2007	Weising, K., Freitag, H., 2007. Phylogeography of halophytes from European coastal and inland habitats. Zoologischer Anzeiger 246, 279–292. https://doi.org/10.1016/j.jcz.2007.07.005
2007	Freitag, H., 2007. Structural, biochemical, and physiological characterization of C-4 photosynthesis in species having two vastly different types of Kranz anatomy in Genus Suaeda (Chenopodiaceae). Plant Biology 9, 745–757. https://doi.org/10.1055/s-2007-965579
2006	Freitag, H., 2006. Phylogeny of Salicornioideae (Chenopodiaceae): diversification, biogeography, and evolutionary trends in leaf and flower morphology, in: Taxon. S. 617–642. https://doi.org/10.2307/25065639
2005	Kadereit, G., Gotzek, D., Jacobs, S., Freitag, H., 2005. Origin and age of Australian Chenopodiaceae. Organisms Diversity and Evolution 5, 59–80.
2003	Lomonosova, M., Freitag, H., 2003. A new species of Suaeda (Chenopodiaceae) from the Altai. Willdenowia 33, 139–147.
2003	Schütze, P., Freitag, H., Weising, K., 2003. An integrated molecular and morphological study of the subfamily Suaedoideae Ulbr. (Chenopodiaceae). Plant Systematics and Evolution 239, 257–286. https://doi.org/10.1007/s00606-003-0013-2
2003	Kadereit, G., Borsch, T., Weising, K., Freitag, H., 2003. Phylogeny of Amaranthaceae and Chenopodiaceae and the evolution of C4 photosynthesis. International Journal of Plant Sciences 164, 959–986. https://doi.org/10.1086/378649
2003	Freitag, H., Maier-Stolte, M., 2003. The genus Ephedra in NE Tropical Africa. Kew Bulletin 58, 415–426.
2002	Freitag, H., Stichler, W., 2002. Bienertia cycloptera Bunge ex Boiss., Chenopodiaceae, another C4 plant without Kranz tissues. Plant Biology 4, 121–131.