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Johansen Jeffrey Randolph

Professor, Ph.D.
Born December 11, 1953

  • Botany, specialization in Phycology
  • Member of Learned Society since 2017

Educational and professional preparation

  • 2014, Sabbatical Stay, Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, CZ
  • 1986-88, Postdoctoral Visiting Professional, Solar Energy Research Institute, Golden, Colorado, USA
  • 1984-86, Postdoctoral Fellowship, Washington State University, Pullman, Washington, USA
  • 1984, Ph.D. in Botany, Brigham Young University, Provo,Utah, USA
  • 1980-82, Graduate studies, Department of Oceanography, Texas A&M University, College Station, Texas, USA
  • 1980, M.S. in Botany, Brigham Young University, Provo,Utah, USA
  • 1978, B.S. in Botany, Brigham Young University, Provo,Utah, USA

Employment and academic positions

  • 2012-now, Professor, Department of Botany, Faculty of Sciences, University of South Bohemia, České Budějovice, CZ
  • 2000-now, Professor, Department of Biology, John Carroll University, University Heights, Ohio, USA
  • 1994-2000, Associate Professor, Department of Biology, John Carroll University, University Heights, Ohio, USA
  • 1988-1994, Assistant Professor, Department of Biology, John Carroll University, University Heights, Ohio, USA

Membership in selected domestic scientific bodies

  • Czech Phycological Society
  • Phi Kappa Phi Honor Society
  • Phycological Society of America
  • Sigma Xi

Membership and positions in selected international organizations and societies

  • 2017-now, Associate Editor, Bibliotheca Phycologica
  • 1999-2002, 2016-now, Editorial Board, Journal of Phycology
  • 2003-2007, Editor, Diatom Research
  • 2003-2006, Secretary, Phycological Society of America
  • 1999-2007, Associate Editor, Nova Hedwigia
  • 1999-now, International Association for Cyanophyte Research
  • 1989-now, International Diatom Society
  • 1989-now, Board of Editorial Advisors, Phycologia
  • 1984-now, International Phycological Society

Notable awards

  • 2016, Distinguished Faculty Award, John Carroll University, University Heights, Ohio, USA
  • 2012, Doctor Honoris Causa, University of South Bohemia, České Budějovice, CZ
  • 2009, Honorary Professor, Bashkir State Pedagogical University, Ufa, Bashkortostan, Russia

Selected publications

  • Shalygin, S., Shalygina, R., Johansen, J.R., Pietrasiak, N., Berrendero, E., Bohunická, M., Mareš, J. and Sheil, C. 2017. Cyanomargarita gen. nov. (Nostocales, Cyanobacteria): convergent evolution resulting in a cryptic genus. Journal of Phycology 53:762-777.
  • Strunecký, O., Bohunická, M., Johansen, J.R., Čapková, K., Raabová, L., Dvořák, P. and Jiří Komárek. 2017. A revision of the genus Geitlerinema and a description of the genus Anagnostidinema gen. nov. (Oscillatoriophycidae, Cyanobacteria). Fottea, Olomouc 17: 114–126.
  • Hentschke, G.S., Johansen, J.R., Pietrasiak, N., Rigonato, J., Fiore, M.F. and Sant'Anna, C.L. 2017. Komarekiella atlantica gen. et sp. nov. (Nostocaceae, Cyanobacteria): a new subaerial taxon from the Atlantic Rainforest and Kauai, Hawaii. Fottea, Olomouc 17: 178-190.
  • Berrendero Gomez, E., Johansen, J.R., Kaštovský, J., Bohunická, M. and Čapková, K. 2016. Macrochaete gen. nov. (Nostocales, Cyanobacteria), a taxon morphologically and molecularly distinct from Calothrix. Journal of Phycology 52: 638–655.
  • Hentschke, G.S., J.R. Johansen, N. Pietrasiak, M.F. Fiore, J. Rigonato, C.L. Sant'Anna and J. Komárek. 2016. Phylogenetic placement of Dapisostemon gen. nov. and Streptostemon, two tropical heterocytous genera (Cyanobacteria). Phytotaxa 245 (2): 129-143.
  • Bohunická, M., Pietrasiak, N., Johansen, J.R., Berrendero-Gomez, E., Hauer, T., Gaysina, L., Lukešová, A. 2015. Roholtiella, gen. nov. (Nostocales, Cyanobacteria) - a tapering and branching member of the Nostocaceae (Cyanobacteria). Phytotaxa 197(2): 84-103.
  • Fučíková, K., J.R. Johansen and J.D. Hall. 2015. A contribution to the desmid flora of Southeastern Maine. Journal of the Torrey Botanical Society 142(2):166-178.
  • Komárek, J. and J.R. Johansen. 2015. Coccoid Cyanobacteria. Pages 75-133 in: Wehr, J.D., R.G. Sheath and J.P. Kociolek (eds.) Freshwater Algae of North America, 2nd Edition. Academic Press, London.
  • Komárek, J. and J.R. Johansen. 2015. Filamentous Cyanobacteria. Pages 135-235 in: Wehr, J.D., R.G. Sheath and J.P. Kociolek (eds.) Freshwater Algae of North America, 2nd Edition. Academic Press, London.
  • Řeháková, K., J.R. Johansen, M.B. Bowen, M.P. Martin and C.A. Sheil. 2014. Variation in secondary structure of the 16S rRNA molecule in cyanobacteria with implications for phylogenetic analysis. Fottea, Olomouc 14: 161–178.
  • Wilde, S.B., J.R. Johansen, H.D. Wilde, P. Jiang, B.A. Bartelme and R.S. Haynie. 2014. Aetokthonos hydrillicola gen. et sp. nov.: Epiphytic cyanobacteria associated with invasive aquatic plants and implicated in bird deaths from Avian Vacuolar Myelinopathy. Phytotaxa 181 (5): 243-260.
  • Komárek, J., J. Kaštovsky, J. Mareš, and J.R. Johansen. 2014. Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014 according to the polyphasic approach. Preslia 86: 295–335.
  • Hauer, T., Mareš, J., Bohunická, M., Johansen, J.R. and Berrendero-Gomez, E. 2014. Heterogeneity of the cyanobacterial genus Microchaete: reassessment of the family Microchaetaceae and establishment of new families Tolypothrichaceae and Godleyaceae. Journal of Phycology 50:1089–1100.
  • Osorio-Santos, K., N. Pietrasiak, M. Bohunická, L. Miscoe, L. Kovacik, M.P. Martin and J.R. Johansen. 2014. Seven new species of Oculatella (Pseudanabaenales, Cyanobacteria): taxonomically recognizing cryptic diversification. European Journal of Phycology 49: 450–470.
  • Johansen, J.R., M. Bohunická, A. Lukešová, K.  Hrčková, M.A. Vaccarino and N.M. Chesarino. 2014. Morphological and molecular characterization within 26 strains of the genus Cylindrospermum (Nostocaceae, Cyanobacteria), with descriptions of three new species. Journal of Phycology 50: 187-202.

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Luboš Perek is celebrating his 100th year

Founding fellow of the Learned Society and its doyen, astronomer doc. RNDr. Luboš Perek, DrSc, is celebrating his 100th birthday on 26 July 2019. He is an indelible part of history as the person who helped define cosmic space, he was the first to point out the issue of cosmic waste and was also a teacher to the most important Czechoslovak astronomers. Let us express our respect and admiration of the extraordinary scientific career of a person who worked tirelessly and continues to work. The Learned Society wishes Mr Perek health, optimism and joy in the oncoming years.


The Academy of Sciences of the Czech Republic has appealed to the Hungarian President to support academic freedom

On Friday 19 July the Academy of Sciences of the Czech Republic and the Learned Society of the Czech Republic sent a letter to Hungarian President János Ánder, in which they state their concerns regarding the situation in respect to management and funding of scientific activities in Hungary. An act, according to which not the Academy of Sciences, but a thirteen-member political committee, will decide on research, funding of scientific activities and establishment or closure of scientific workplaces, will come into force on 1 September.


The loss of Learned Society Fellow prof. Josef Koutecký

We regret to inform that prof. Josef Koutecký, a fellow of the Learned Society, a renowned physician and the founder of paediatric oncology in this country, passed away on 5 July 2019 at the age of 88. He founded paediatric oncology here in 1964 and a separate paediatric oncology department was then established at the Faculty Hospital in Motol, Prague in 1978.