Jeffrey R. Johansen
Department Chairman

Office: Dolan W 201

Phone: 216-397-4487

Email: johansen@jcu.edu

Visit Dr. Johansen's Wesbite

Academic Background:

B.S. Botany, Brigham Young University, 1978

M.S. Botany, Brigham Young University, 1980

Ph.D. Botany, Brigham Young University, 1984

Postdoc Microbiology and Public Health, Washington State University 1984-1986

Teaching Assignment:

FYS-SEM - First Year Seminar*
BL 159/BL 160 - Biodiversity*
BL 213 - Genetics
BL 222 - Ecology*
BL 445 - Aquatic Resources*
BL 447 - Phycology
BL 560 - Biometry*
BL 577 - Diatom Taxonomy and Ecology
BL 580 - Special Topics in Phycology*

Recent Publications:

Johansen, J.R., J.P. Kociolek and R.L. Lowe.  In press.  Spicaticribra kingstonii, gen. nov et sp. nov. (Thalassiosiraceae, Bacillariophyta) from Great Smoky Mountains National Park, USA.  Diatom Research.

Johansen, J.R., C.E. Olsen, R.L. Lowe, K. Fučíková & D.A. Casamatta.  In press.  Leptolyngbya species from selected seep walls in the Great Smoky Mountains National Park.  Algological Studies.

Kaštovský, J. & J.R. Johansen.  In press.  Mastigocladus laminosus (Stigonematales, Cyanobacteria): phylogenetic relationship of the strains from thermal springs to the soil-inhabiting genera of the order, and taxonomic implications for the genus.  Phycologia.

Miller, N. and J.R. Johansen.  In press.  Observations on a diminutive form of Thalassiosira lacustris (Grunow) Hasle from Ohio.  Nova Hedwigia.

Segiesmund, M.A., J.R. Johansen, U. Karsten & T. Friedl.  In press.  Coleofasciculus gen. nov. (Cyanobacteria): morphological and molecular criteria for revision of the genus Microcoleus Gomont.  Journal of Phycology.

Belnap, J., Phillips, S.L., Herrick, J.E., and Johansen, J.R., 2007. Wind erodibility of soils at Ft. Irwin, CA (Mojave Desert) before and after trampling disturbance: Implications for land management: Earth Surface Processes and Landforms 32: 75-84.

Johansen, J.R. and R.L. Lowe.  2007.  Draparnaldia appalachiana sp. nov. (Chaetophoraceae, Chlorophyceae) from the Great Smoky Mountains National Park.  Algological Studies 123: 35-45.

Johansen, J.R., R.L. Lowe, S. Carty, K. Fučiková, C.E. Olsen, M.H. Fitzpatrick, J.A. Ress and P.C. Furey.  2007.  New algal species records for the Great Smoky Mountains National Park, with an annotated checklist of all reported taxa from the park.  Southeastern Naturalist, Special Issue: 1:99-134.

Lowe, R.L., P.C. Furey, J.A. Ress & J.R. Johansen.  2007.  Diatom biodiversity and distribution on wetwalls in the Great Smoky Mountains National Park.  Southeastern Naturalist 6 (SI): in press.

Řeháková, K., J.R. Johansen, D.A. Casamatta, L. Xuesong, and J. Vincent.  2007.  Morphological and molecular characterization of selected desert soil cyanobacteria: Three species new to science including Mojavia pulchra gen. et sp. nov.  Phycologia 46: 481-502.

Sgro, G.V., E.D. Reavie, J.C. Kingston, A.R.Kireta, M.J. Ferguson, N.P. Danz and J.R. Johansen.  2007.  A diatom quality index from a diatom-based total phosphorus inference model.  Environmental Bioindicators 2:15-34.

Casamatta D.A., S.R. Gomez and J.R. Johansen. 2006.  Rexia erecta gen. et sp. nov. and Capsosira lowei sp. nov., two newly described cyanobacterial taxa from the Great Smoky Mountain National Park (USA).  Hydrobiologia 561:13-26.

Jog, S.K., J.R. Johansen, M.K. Delong and D. Magee.  2006.  Plant Communities of Highland heights community Park, Cuyahoga County, Ohio.  Ohio Journal of Science 106:174-180.

Sgro, G.V., M. Ketterer and J.R. Johansen.  2006. Ecology and assessment of the benthic diatom communities of four Lake Erie estuaries using Lange-Bertalot Tolerance values. Hydrobiologia 561:239-249.

Casamatta D.A., J.R. Johansen, M.L. Vis & S.T. Broadwater. 2005. Molecular and ultrastructural characterization of ten polar and near-polar strains within the Oscillatoriales (Cyanobacteria). Journal of Phycology 41:421-438.

Delong, M.K., S.K. Jog, J.R. Johansen and G.J. Wilder.  2005.  Floristic survey of a highly disturbed wetland within Shaker Median Park, Beachwood (Cuyahoga County), Ohio.  Ohio Journal of Science 105:102-115.

Johansen, J.R. & D.A. Casamatta. 2005.  Recognizing cyanobacterial diversity through adoption of a new species paradigm.  Algological Studies 116:71-93.

Johansen, J.R., K. Fučíková, M.H. Fitzpatrick & R.L. Lowe.  2005.  The red algal genus Rhodospora (Bangiophycidae, Rhodophyta): first report from North America.  Journal of Phycology 41:1281-1283.

Jog, S.K., J.T. Kartesz, J.R. Johansen and G.J. Wilder. 2005. Floristic study of Highland Heights Community Park, Cuyahoga Co., Ohio.  Castanea 70:136-145.

Nagy, M.L., J.R. Johansen, L.L. St. Clair & B.L. Webb.  2005.  Impact of elevated arsenic on microbiotic soil crusts 70 years after contamination. Journal of Arid Environments 63:304-323.

Johansen, J.R., R.L. Lowe, S.R. Gomez, J.P. Kociolek and S.A. Makosky.  2004.  New algal species records for the Great Smoky Mountains National Park, U.S.A., with an annotated checklist of all reported algal species for the park.  Algological Studies 111:17-44.

George, D.B., B.A. Roundy, L.L. St. Clair, J.R. Johansen, G.B. Schaalje and B.L. Webb.  2003.  The effects of microbiotic soil crusts on soil water loss.  Arid Land Research and Management 17:113-125.

Gomez, S.R., J.R. Johansen, and R.L. Lowe.  2003. Epilithic Aerial Algae of Great Smoky Mountains National Park. Biologia, Bratislava 58:603-615.

Kubečková, K., J.R. Johansen, S.D. Warren, and R.L. Sparks.  2003. Development of immobilized cyanobacterial amendments for reclamation of microbiotic soil crusts.  Algological Studies 109:341-362.

Neher, D.A., T.L. Walters, E. Tramer, T.R. Weicht, R.M. Veluci, K. Saiya-Cork, S. Will-wolf, J. Toppin, J. Traub and J.R. Johansen.  2003.  Biological soil crust and vascular plant communities in a sand savanna of northwestern Ohio.  Journal of the Torrey Botanical Society 130:244-252.

Rosati, T.C., J.R. Johansen and M.M. Coburn.  2003.  Cyprinid fishes as samplers of benthic diatom communities in freshwater streams of varying water quality.  Canadian Journal of Fisheries and Aquatic Sciences 60:117-125.

Sellman, S.M., J.R. Johansen, and M.M. Coburn.  2002.  Using fish to sample diatom composition in streams: are intestinal floras representative of natural substrates? Pages 529-536 in: Economou-Amilli, A., (ed.) Proceedings of the 16th International Diatom Symposium, Athens, Greece, University of Athens, Greece.

Flechtner, V.R., S.L. Boyer, J.R. Johansen, and M.L. DeNoble.  2002.  Spirirestis rafaelensis gen. et sp. nov. (Cyanophyceae), a new cyanobacterial genus from arid soils.  Nova Hedwigia 74:1-24.

Boudell, J.A., S.O. Link and J.R. Johansen.  2002.  Effect of soil microtopography on seed bank distribution in the shrub-steppe.  Western North American Naturalist 62(1):14-24.

Boyer, S.L., J.R. Johansen, V.R. Flechtner and G.L. Howard.  2002.  Phylogeny and genetic variance in terrestrial Microcoleus (Cyanophyceae) species based on sequence analysis of the 16S rRNA gene and associated 16S-23S ITS region.  Journal of Phycology 38:1222-1235.

Boyer, S.L., V.F. Flechtner, and J.R. Johansen.  2001.  Is the 16S-23S rRNA internal transcribed spacer region a good tool for use in molecular systematics and population genetics?  A case study in cyanobacteria.  Molecular Biology and Evolution 18:1057-1069.

Johansen, J.R.  Impacts of fire on biological soil crusts.  2001.  Pages 385-397 in: Belnap, J. and O.L. Lange (eds.) Biological soil crusts: structure, function, and management.  Ecological Studies 150.  Springer-Verlag, Berlin.

Johansen, J.R., C. Britton, T.C. Rosati, Li X., L.L. St. Clair, B.L. Webb, A.J. Kennedy, and K.S. Yanko.  2001.  Microbiotic crusts of the Mojave Desert: factors influencing distribution and abundance.  Nova Hedwigia, Beiheft 123:339-369.

Johansen, J.R. and L.E. Shubert.  2001.  Algae in soils.  Nova Hedwigia, Beiheft 123:295-304.

Gaiser, E. and J.R. Johansen.  2000.  Freshwater diatoms from Carolina bays and other isolated wetlands on the Atlantic coastal plain of South Carolina, U.S.A., with descriptions of seven taxa new to science.  Diatom Research 15:75-130.

Evans, R.D. & J.R. Johansen.  1999.  Microbiotic crusts and ecosystem processes.  Critical Reviews in Plant Sciences 18:183-225.

Johansen, J.R.  1999.  Diatoms of aerial habitats.  Pages 264-273 in Stoermer, E.F. & J.P. Smol (eds.), The diatoms: applications for the environmental and earth sciences.  Cambridge University Press, Cambridge, U.K.

Buttars, S.M., L.L. St. Clair, J.R. Johansen, J.C. Sray, M.C. Payne, B.L. Webb, R.E. Terry, B.K. Pendleton & S.D. Warren.  1998.  Pelletized cyanobacterial soil amendments: laboratory testing for survival, escapability, and nitrogen fixation.  Arid Soil Research and Rehabilitation 12(2):165-178.

Flechtner, V.R., J.R. Johansen, & W.H. Clark.  1998.  Algal composition of microbiotic crusts from the central desert of Baja California, Mexico.  Great Basin Naturalist 58:295-311.

Research Interests:

Molecular Systematics of Cyanobacteria
Biological Soil Crusts
Algal Biodiversity Surveys
Diatom taxonomy and ecology

Important Links:

The Database of Cyanobacterial Genera
Cyanobacteria and Algae
National Center for Biotechnology Information (NCBI)
Biological Soil Crusts
The Microbiotic Crust Website
Biotic Crust Project