Curriculum Vitae (pdf)

Research interests

I am an ecosystem ecologist who uses a variety of field and laboratory techniques to understand and predict how ecosystems are shaped by climatic change. Specifically, I work at the root-soil interface to investigate how atmospheric and climatic change alters belowground carbon and nutrient cycling.

Education

Ph.D., University of Tennessee   (2003 – 2008)
Ecology and Evolutionary Biology
Co-advisors: Richard J. Norby and Aimée T. Classen
Dissertation: Forest responses to rising atmospheric CO2: Causes and consequences of increased fine-root production in a CO2-enriched sweetgum plantation

M.S., University of Notre Dame (2001 – 2004)
Biological Sciences
Advisor: Scott D. Bridgham
Thesis: Scaling community nitrogen use- and uptake efficiencies in response to increased nutrient availability in peatlands

B.S. (cum laude), Hope College (1997 – 2001)
Biological and Environmental Sciences

Appointments

Post-doctoral research associate (2008 – present)
Environmental Sciences Division
Oak Ridge National Laboratory

Marvin L. Wesely Graduate Research Environmental Fellow (2007 – 2008)
Global Change Education Program
Department of Energy

Refereed publications

Iversen CM (in press). Digging deeper: Fine root responses to rising atmospheric [CO2] in forested ecosystems. New Phytologist.

Iversen CM, Bridgham SD, Kellogg LE (in press). Scaling plant nitrogen-use and uptake efficiencies in response to nutrient addition in peatlands. Ecology.

O’Brien SL, Iversen CM (2009). Missing links in the root-soil organic matter continuum. New Phytologist 184: 513-516.

Franklin O, McMurtrie RE, Iversen CM, Crous KY, Finzi A, Tissue DT, Ellsworth DS, Oren R, Norby RJ (2009). Forest fine-root production and nitrogen use under elevated CO2: contrasting responses in evergreen and deciduous trees explained by a common principle. Global Change Biology 15: 132-144.

Iversen CM, Ledford J, Norby RJ (2008). CO2 enrichment increases carbon and nitrogen input from fine roots in a deciduous forest. New Phytologist: 179: 837-847.

Iversen CM, Norby RJ (2008). Nitrogen limitation in a sweetgum plantation: Implications for carbon allocation and storage.  Canadian Journal of Forest Research 38: 1021-1032.

Finzi AC, Norby RJ, Calfapietra C, Gallet-Budynek A, Gielen B, Holmes WE, Hoosbeek MR, Iversen CM, Jackson RB, Kubiske MB, Ledford J, Liberloo M, Oren R, Polle A, Pritchard S, Zak DR, Schlesinger WH, Ceulemans R (2007). Increases in nitrogen uptake rather than nitrogen-use efficiency support higher rates of temperate forest productivity under elevated CO2.  Proceedings of the National Academy of Sciences, USA 104: 14014-14019.

Norby RJ, Iversen, CM (2006). Nitrogen uptake, distribution, turnover, and efficiency of use in a CO2-enriched sweetgum forest.  Ecology 87:5-14.

Keller JK, Bauers AK, Bridgham SD, Kellogg LE, Iversen CM (2006). Nutrient control of microbial carbon cycling along an ombrotrophic-minerotrophic peatland gradient. Journal of Geophysical Research 111: G03006.

Keller JK, Bridgham SD, Chapin CT, Iversen CM (2005). Limited effects of six years of fertilization on carbon mineralization dynamics in a Minnesota fen.  Soil Biology and Biochemistry 37: 1197-1204. 

Grants and fellowships

Honors and awards

Teaching and mentoring

Instructor

Guest lecturer

Teaching assistant

Undergraduate mentoring

Presentations (2005-2009)

Iversen CM, Bridgham SD, Kellogg LE. 2009. Scaling plant nitrogen-use and uptake efficiencies in response to nutrient addition in peatlands. Second International PeatNet Symposium: Peatlands in the global carbon cycle, Prague, Czech Republic. Poster presentation.

Iversen CM, Jastrow JD, and Norby RJ. 2009. Carbon and nitrogen inputs from decomposing roots into different soil organic matter fractions. Organized oral session. Ecological Society of America annual meeting, Albuquerque, NM, USA.

Iversen CM. 2009. The causes and consequences of increased fine-root production in a CO2-enriched sweetgum plantation. Invited talk. Biosciences Division Seminar, Argonne National Laboratory, Argonne, IL, USA.

Iversen CM. 2009. The causes and consequences of increased fine-root production in a CO2-enriched sweetgum plantation. Invited talk. Department of Biological Sciences Seminar, University of Illinois at Chicago, Chicago, IL, USA.

Iversen CM. 2008. The causes and consequences of increased fine-root production in a CO2-enriched sweetgum plantation. Keynote address. High CO2 Workshop, University of Western Sydney, New South Wales, Australia.

Iversen CM, Childs J, Norby RJ. 2008. CO2 enrichment increases carbon and nitrogen input from fine roots in a deciduous forest. Ecological Society of America annual meeting, Milwaukee, WI, USA. Oral presentation.

Iversen CM. 2007. At the root of the response in a CO2-enriched deciduous forest. M.L. Wesely Graduate Research Environmental Fellow, Global Climate Education Program, annual end-of-year meeting, Washington, D.C., USA. Oral presentation.

Iversen CM. 2006. At the root of the response: Carbon and nitrogen cycling in a CO2-enriched deciduous forest. Invited talk. Smithsonian Environmental Research Center, Edgewater, MD, USA.

Iversen CM, Norby RJ and Classen AT. 2006. Changes in fine-root quantity and quality with elevated CO2: Implications for decomposition and nitrogen cycling. Ecological Society of America annual meeting, Memphis, TN, USA. Winner of best student poster award, Soil Ecology Section.

Iversen CM. 2006. Plant nitrogen use from fens to forests: Consequences for carbon storage. Invited talk. Oak Ridge National Laboratory weekly “Fishheads” meeting, Oak Ridge, TN, USA.

Iversen CM, Norby RJ and Classen AT. 2006. Nitrogen cycling in a CO2-enriched deciduous forest: Implications for carbon storage. Global Change Education Program, Graduate Research Environmental Fellowship annual orientation, Portland, OR, USA. Oral presentation.

Iversen CM, and Norby RJ, and Gunderson CA. 2005. Nitrogen limitation and the potential for long-term effects on production and carbon storage in a CO2-enriched forest. Ecological Society of America annual meeting, Montreal, Canada. Poster presentation.

Iversen CM, and Norby RJ. 2005. Nitrogen limitation and the potential for long-term effects on production and carbon storage in a CO2-enriched forest. Soil Ecology Society bi-annual meeting, Argonne National Laboratory, Argonne, IL, USA. Winner of second best student poster award.

Iversen CM, and Norby RJ. 2005. Nitrogen distribution and dynamics in a CO2-enriched deciduous forest: Will N limitation preclude a sustained productivity response? TERACC Workshop, Modeling Ecosystem Respones to Global Change: Techniques and Recent Advances, Fort Myers, FL, USA . Poster presentation.

Professional Activities

Co-organizer: “Missing links in the root-soil organic matter continuum”. Organized oral session at the annual Ecological Society of America meeting, August, 2009 in Albuquerque, NM, USA.

Ad-hoc reviewer for: Acta Oecologica, Biological Invasions, Canadian Journal of Forest Research, Global Biogeochemical Cycles, Global Change Biology, New Phytologist, Oecologia, Plant and Soil, Soil Science Society of America Journal, Tree Physiology, National Science Foundation, Ecosystems Panel, and National Institute for Climate Change Research, Southeastern Region.

Public tours: Oak Ridge National Laboratory Free-Air CO2-Enrichment experiment.

Public outreach: Local NPR interview, web cast for Oak Ridge Associated Universities, part of a feature story in the ORNL Review, presentation of “Ecosystems” and “Greenhouse effect” concepts to Sevierville 3rd grade classrooms and Environmental Club.

Society memberships: Ecological Society of America, Soil Ecology Society.

References

Updated on October 30, 2009.