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June 2007

J. PATRICK MEGONIGAL

Smithsonian Environmental Research Center voice: (443) 482-2346
P.O. Box 28 e-mail: megonigalp@si.edu
Edgewater, MD 21037-0028  

Profession

Research Biogeochemist. Research Interests in Biogeochemical Cycling, Soil Ecology, Global Change, and Wetland Ecosystems.

Employment

1985-1990 Research Associate, Savannah River Ecology Laboratory, Aiken, SC
1996-1999 Assistant Professor of Biology, George Mason University, Fairfax, VA
2000-present Senior Scientist, Smithsonian Environmental Research Center, MD

Adjunct Appointments

2000-present George Mason University, Biology Department
2001-present Old Dominion University, Biology Department
2004-present University of Maryland, MEES Program

Education

B.S. 1982 Old Dominion University, Biology
M.S. 1986 Old Dominion University, Biology
Ph.D. 1996 Duke University, Botany

Selected Publications (bold type= JPM as correspondingauthor or senior co-author, 50 total)< /SPAN>

35. Garnet, KN, JP Megonigal, C Litchfield, and GE Taylor. 2005. Physiological control of leaf methane emission from wetland plants. Aquatic Botany 81:141-155.

36. Megonigal, JP, CD Vann and AA Wolf. (2005). Flooding constraints on tree (Taxodium distichum) and herb growth responses to elevated CO2. Wetlands 25(2): 430-438.

37. Weiss, JV, D. Emerson, and JP Megonigal. 2005. Rhizosphere iron(III) deposition and reduction in a Juncus effusus L.-dominated wetland. Soil Science Society of America Journal  69:1861-1870.

38. Marsh, AS, DP Rasse, BG Drake, and JP Megonigal. 2005. Effect of elevated CO2 on carbon pools and fluxes in a brackish marsh. Estuaries  28:694-704.

39. Neubauer, SC, K Givler, S Valentine, and JP Megonigal. 2005. Seasonal patterns and plant-mediated controls of subsurface wetland biogeochemistry. Ecology  86:3334-3344.

40. Saunders, CJ, JP Megonigal and JF Reynolds (2006). Comparison of belowground biomass in C3- and C4-dominated mixed communities in a Chesapeake Bay brackish marsh. Plant and Soil 280:305-322.

41. Hungate, B.A., D.W. Johnson, P. Dijkstra, G. Hymus, P. Stiling, J.P. Megonigal, A.L. Pagel, J.L. Moan, F. Day, H. Li, C.R. Hinkle, and B.G. Drake. 2006. Nitrogen cycling during seven years of atmospheric CO2 enrichment in a scrub oak woodland. Ecology  87:26-40.

42. Burdt, AC, JM Galbraith and JP Megonigal. 2006. Using CO2 efflux rates to indicate below-ground growing seasons by land-use treatment. Wetlands Ecology and Management. 14:133-145.

43. Hines, J, JP Megonigal and RF Denno. 2006. Nutrient subsidies to belowground microbes impact aboveground food web interactions. Ecology 87(6):1542-1555.

44. Bridgham, SD, JP Megonigal, JK Keller, NB Bliss, and C Trettin. 2006. The carbon storage of North American wetlands. Wetlands 26:889-916.

45. Erickson, JE, JP Megonigal, G Drake, BG Drake (2007). Salinity and sea level mediate elevated CO2 effects on C3-C4 plant interactions and tissue nitrogen in a Chesapeake Bay tidal wetland. Global Change Biology 13:202-215. doi: 10.1111/j.1365-2486.2006.01285.x

46. Neubauer, SC, D Emerson and JP Megonigal (in press). Microbial oxidation and reduction of iron in the root zone and mobility of heavy metals. in Violante, A., P.M. Huang, and G. Stotzsky (editors). Biophysico-Chemical Processes of Heavy Metals and Metalloids in Soil Environments.

47. Neubauer, SC, GE Toledo-Durán, D Emerson and JP Megonigal (2007). Returning to their roots: Iron-oxidizing bacteria enhance short_term plaque formation in the wetland-plant rhizosphere. Geomicrobiology 24:65-73. doi:10.1080/01490450601134309

48. Cornell, JA, CC Craft and JP Megonigal (in press). Ecosystem gas exchange across a created salt marsh chronosequence. Wetlands.

49. Carney, KM, BA Hungate, BG Drake, and JP Megonigal (2007). Altered soil microbial community at elevated CO2 leads to loss of soil carbon. Proceedings of the National Academy of Sciences 12:4990-4995.

50. Wolf, AA, BG Drake, JE Erickson, and JP Megonigal (in press). An oxygen-mediated positive feedback between elevated CO2 and SOM decomposition in a simulated anaerobic wetland. Global Change Biology.

Selected Active Grants

2003-2008

$481,858. US Geologic Survey. Predicting the persistence of coastal wetlands to global change effects (Grant 06-2302-0047; Co-PI; total award 3,500,000).

2005-2008

$390,000. National Science Foundation. Plant Regulation of Competition Between Methanogens and Iron Reducing Bacteria in Freshwater Wetlands (Grant DEB-0516400; PI; total award $813,926) 8/1/05-7/31/08.
2005-2008  $208,763. National Science Foundation. Progressive nitrogen limitation in terrestrial ecosystems: empirical test of a biogeochemical paradigm (Grant DEB-0445324; Co-PI; total award $836,322). 4/1/05 - 3/31/08.

Society Membership

Ecological Society of America, American Geophysical Union, Soil Science Society of America, Society of Wetland Scientists

Selected Service

Jun 2007-Jun 2008  President, Society of Wetland Scientists
Jun 2006-Jun 2007  Vice-President, Society of Wetland Scientists
2005-present Lead Curator, Worlds Underfoot Exhibition