Professor Bremer obtained her doctorate in botany in 1980 from Stockholm University, with the thesis "Taxonomy of mosses of the genus Schistidium".[2]
In 1981 she was appointed docent at Stockholm University; 1983–1990 she was an instructor of systematics.
Between 1990 and 2000 she was systematic botany instructor; in 2000–2001 she served as dean of the department of systematics; 2000–2004 – professor of plant molecular systematics.
Since 2002 she has been director of the Bergius Fund and director of Botanical Garden.[3] Since 2004 she has been a professor of systematics at Stockholm University.
Achievements
On 11 February 2009 Professor Bremer, Professor Bergianus at the Bergius Foundation, The Royal Swedish Academy of Sciences, was elected a member of the Royal Swedish Academy of Sciences (Kungliga Vetenskapsakademien, KVA).[4]
Bremer, Birgitta; Eriksson, Torsten (August 2009). "Time Tree of Rubiaceae: Phylogeny and Dating the Family, Subfamilies, and Tribes". International Journal of Plant Sciences. 170 (6): 766–793. doi:10.1086/599077. S2CID49332892 – via University of Chicago.
Kårehed, Jesper; Groeninckx, Inge; Dessein, Steven; Motley, Timothy J.; Bremer, Birgitta (December 2008). "The phylogenetic utility of chloroplast and nuclear DNA markers and the phylogeny of the Rubiaceae tribe Spermacoceae". Molecular Phylogenetics and Evolution. 49 (3): 843–866. Bibcode:2008MolPE..49..843K. doi:10.1016/j.ympev.2008.09.025. PMID18950720.
Oxelman, Bengt; Kornhall, Per; Olmstead, Richard G.; Bremer, Birgitta (1 May 2005). "Further Disintegration of Scrophulariaceae". Taxon. 54 (2): 411–425. doi:10.2307/25065369. JSTOR25065369.
Razafimandimbison, Sylvain G.; Moog, Joachim; Lantz, Henrik; Maschwitz, Ulrich; Bremer, Birgitta (February 2005). "Re-assessment of monophyly, evolution of myrmecophytism, and rapid radiation in Neonauclea s.s. (Rubiaceae)". Molecular Phylogenetics and Evolution. 34 (2): 334–354. Bibcode:2005MolPE..34..334R. doi:10.1016/j.ympev.2004.10.005. PMID15619446.
Novotny, Vojtech; Basset, Yves; Miller, Scott E.; Weiblen, George D.; Bremer, Birgitta; Cizek, Lukas; Drozd, Pavel (25 April 2002). "Low host specificity of herbivorous insects in a tropical forest". Nature. 416 (6883): 841–844. Bibcode:2002Natur.416..841N. doi:10.1038/416841a. PMID11976681. S2CID74583.
Backlund, Maria; Oxelman, Bengt; Bremer, Birgitta (July 2000). "Phylogenetic relationships within the Gentianales based on NDHF and RBCL sequences, with particular reference to the Loganiaceae". American Journal of Botany. 87 (7): 1029–1043. doi:10.2307/2657003. JSTOR2657003. PMID10898781.
Kåre Bremer, Birgitta Bremer, Mats Thulin. 2003. Introduction to phylogeny and systematics of flowering plants. Volume 33, Nº 2 de Acta Universitatis Upsaliensis: Symbolae botanicae Upsalienses. 7ª edición ilustrada de Uppsala Universitet, 102 pp. ISBN9155458289
birgitta Bremer. 1992. Phylogeny of the Rubiaceae (Chiococceae) based on Molecular and MOrphological data – Useful Approaches for Classification and Comparative Ecology. Volume 72 and 79 of Annals of the Missouri Botanical Garden. 767 pp.