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Laura G. Leff

Professor and Assistant Chair
Education

  • Ph.D, University of Georgia
Courses Taught

  • Career Pathways
  • Life on Planet Earth 
Research Interests

My research focuses on microbial ecology of aquatic ecosystems with emphasis on bacterial ecology of streams. Present projects in my laboratory include: Our lab focuses on examining responses of microorganisms to their environment. Examples of recent projects in the lab include: 

  •  Connecting microbial community structure and function
  • Microbial communities of acid mine impacted streams and changes in the community associated with remediation
  • Effects of dissolved organic matter on denitrification in agricultural streams
  • Leaf decomposition in wetlands, streams and terrestrial systems
  • Response of bacteria to nutrients and carbon

In each project, we use a variety of molecular biology techniques and microscopy to examine properties such as bacterial and fungal community structure, gene expression, diversity of denitrification genes, etc.  We seek to integrate the fields of microbiology and ecology.

Scholarly, Creative & Professional Activities

Current and past funding from NSF, NASA, EPA, and other agencies/foundations

Editor, Applied and Environmental Microbiology (2001-2011)

Editorial Boards, Applied and Environmental Microbiology (1997-1999, 1999-2001), Microbial Ecology (2001-present), The International Society of Microbial Ecology Journal (2006-present)

PI on NSF IGERT grant, IGERT website

recent publications include:

  1. Ghosh, S. M. Moitra, C.     Woolverton and L. G. Leff. Effects of remediation on the bacterial     community of an acid mine drainage impacted stream. Canadian Journal of     Microbiology, accepted
  2. Baxter, A., Johnston L,     Royer, TV, and L. G. Leff. 2012. Spatial differences in denitrification     and bacterial community structure of streams: relationships with     environmental conditions. Aquatic Sciences. (DOI)     10.1007/s00027-012-0272-5
  3. Johnson, L. T. Royer, J.     Edgerton and L. G. Leff. 2012. Manipulation of the dissolved organic     carbon pool in an agricultural stream: responses in microbial community     structure, denitrification, and assimilatory nitrogen uptake.  Ecosystems, 15: 1027-1038.
  4. Kennedy, E., L. G. Leff and     F. deSzalay. 2012 Effects of herbiciding on Phragmites australis decomposition. Fundamental and Applied     Limnology, 180:309-319.
  5. Vukanti, R. and L. G. Leff.     2012.  Expression of multiple stress     response genes by Escherichia coli     under modeled reduced gravity. Microgravity Science and Technology,      24: 267-279, DOI:     10.1007/s12217-012-9310-0
  6. Baxter, A, Johnston L,     Edgerton J, Royer TV, and L. G. Leff. 2012. Structure and function of     denitrifying bacterial assemblages in low order Indiana streams. Freshwater     Science, 31:304-317.
  7. Vukanti, R, M. Model, and L. G.     Leff. 2012. Effect of modeled reduced gravity conditions on bacterial     morphology and physiology. BMC Microbiology 12:4     doi:10.1186/1471-2180-12-4
  8. Antibus, D., L. G. Leff, B. L.     Hall, J. Baseman, and C. Blackwood. 2012. Cultivable Bacteria from Ancient     Algal Mats from the McMurdo Dry Valleys, Antarctica. Extremophiles, 16:105-114.
  9. Leff, L.G. Freshwater Habitats,     2012. In: Topics     in Ecological and Environmental Microbiology, Tom Schmidt and Moselio Schaechter     (editors), updated version of chapter from 2009 Encyclopedia of     Microbiology. Elsevier.
  10. Antibus, D., L. G. Leff, B. L.     Hall, J. Baseman, and C. Blackwood. 2012. Molecular Characterization of     Ancient Algal Mats from the McMurdo Dry Valleys, Antarctica, Antarctic     Science 24: 139-146.
  11. Das, M, T. V. Royer, and L. G.     Leff.  2011. Interactions between     aquatic bacteria and an aquatic hyphomycete on decomposing maple leaves.     Fungal Ecology, 5:236-244
  12. Lababidi S. L., M. Pelts, M.Moitra,     L. G. Leff, M. A. Model 2011. Measurement of bacterial volume by     transmission-through-dye imaging.  Journal of Microbiological Methods, 87:375-377.
  13. Lan Wu, L. M. Feinstein, O.     Valverde-Barrantes, M. W. Kershner, L. G. Leff, and C. B. Blackwood. 2011.     Placing the effects of leaf litter diversity on saprotrophic     microorganisms in the context of leaf type and habitat, Microbial Ecology,     61:399-409.


Research Areas
  • aquatic ecology
  • microbial ecology
Affiliations
  • American Society for Microbiology
  • International Society for Microbial Ecology
  • Ecological Society of America
  • Society for Freshwater Science
Laura G. Leff
OFFICE
Department of Biological Sciences
Center for Ecology and Natural Resources Sustainability
052 Cunningham Hall
CONTACT INFO
Phone: 330-672-3788
Fax: 330-672-3713
lleff@kent.edu
EXPERTISE