Calendar

No events are planned

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.

Web site

Back to the list of articles

News

20.05.19

XXV. General Assembly of the Learned Society of the Czech Republic

The ceremonial part of the XXV. General Assembly of the Learned Society, at which the Medals of the Learned Society of the Czech Republic Societas Scientarium Bohemica Ad Laudem et Honorem and the awards of the Learned Society of the Czech Republic in the “Young Scientist” and “Grammar School Student” categories were presented, took place on Monday 20 May 2019 in the Great Hall of the Carolinum.

19.05.19

Bolzano lecture by prof. Kip S. Thorne

American physicist Kip S. Thorne, recipient of the Nobel Prize for 2017 for detection of gravitational waves, visited Prague at the invitation of he Learned Society. He held a series of “Bolzano lectures” and a lecture titled “Creating Gravitational-Wave Astronomy” for the Learned Society on 15 May 2019 in the Blue Auditorium of the Carolinum. The lecture was held with the support of the Karel Janeček Foundation and was received very enthusiastically.

07.05.19

XXV. General Assembly

The Czech Learned Society is holding its XXV. General Assembly on 20 and 21 May 2019. The Learned Society’s awards in the “Young Scientist” and “Grammar School Student” categories, Teaching Awards for pedagogic workers who promote interest in science and research at grammar schools and the Learned Society’s medals for meritorious contributions to the advance of science will be presented during a ceremony on 20 May at the Karolinum. Lectures by renowned scientists will also be presented. The second day will be reserved for the working part of the meeting, in the building of the Academy of Sciences of the Czech Republic.