revised 10-4-07 ram oren education positions … · resume - ram oren page 2 canada research chairs...

Revised 10-4-07 RAM OREN

Division of Environmental Science and Policy

Nicholas School of the Environment and Earth Sciences Duke University

Box 90328 Durham, North Carolina 27708-0328 Tel (919) 613-8032 FAX (919) 684-8741 E-mail: [email protected] EDUCATION Mathematics/Natural Sciences, Hebrew University of Jerusalem, Israel, 1975; BS Forest Resource Management, Humboldt State University, California, 1978; MS Forest Ecology, Oregon State University, Corvallis, 1980; Ph.D. Physiological Ecology, Oregon State University, Corvallis, 1984 POSITIONS Professor of Ecology/Ecophysiology, Duke University, 2002 - ; Associate Professor of Ecology/Ecophysiology, Duke University, 1993 - 2002; Scientist, Jet Propulsion Laboratory, California Institute of Technology, 1990 – 1997 (research featured in the National Geographic Magazine September 1993); Invited Short Term Visitor at the Smithsonian Tropical Research Institute, 1993; Scientist (Gastwissenschaftler), Department of Plant Ecology, University of Bayreuth, Germany, 1986 – 1993; Assistant Professor of Ecology/Ecophysiology, Duke University, 1986 – 1992; Project Scientist, ecophysiological group, The Acid Rain Project; Department of Plant Ecology, University of Bayreuth, Germany, 1985 - 1986; Research Assistant, Department of Forest Science, Oregon State University, Corvallis, 1979 – 1984; Research Assistant, Israel National Park Authority, Tel-Aviv, 1978; Assistant Forester, Simpson Timber Company, Korbel, California, 1977. AFFILIATIONS & MEMBERSHIPS On the faculty of the Division of the Environmental Sciences and Policy, and the faculty of Duke

University Graduate Program in Ecology Research Associate with the Center for Tropical Conservation, The Duke Wetland Center, and the

Center for Hydrological Science American Institute of Biological Sciences; Ecological Society of America; American Association for the

Advancement of Science; Union of Concerned Scientists PROFESSIONAL SERVICES Current Editorial Board of Oecologia, and the Editorial Board of Tree Physiology Reviewer for Acta Oecologica, Annales des Sciences Forestieres (currently Annals of Forest Science),

Australina Journal of Botany, Australian Journal of Plant Physiology, Biogeochemistry, BioScience, Canadian Journal of Forest Research, Ecology, Ecological Applications, Ecology letters, Environmental and Experimental Botany, Forest Science, Global Change Biology; IEEE Geoscience and Remote Sensing Transactions, Journal of Experimental Botany, Journal of the Torrey Botanical Society, Journal of Geophysical Research – Climate and Physics of the Atmosphere, Natur Wissenschaften, New Phytologist, Physiologia Plantarum, Plant, Cell & Environment, Plant and Soil; Scandinavian Journal of Forest Research, Science, Soil Biology & Biochemistry, Trees Structure and Function, Water Resources Research

Resume - Ram Oren

Canada Research Chairs Program College of Reviewers 2003 – ; Advisor to the Integrated Carbon Cycle Research Program (ICCR) 2004 – Science Implementation Strategy for Terrestrial Systems; International Advisory Team – Hawkesbury Forest Experiment, NSW Australia, 2005 -- ;

Review proposals for USDA Forest Service, NSF, EPA, National Institute for Global Environmental

Change (NIGEC); Serving on Duke University Schedule Committee 2000 - 2007; The Duke Forest Committee of the

Nicholas School of the Environment and Earth Sciences, 1986 - ; Graduate Admission Committee of the Nicholas School of the Environment and Earth Sciences, 2000 - ;

Previous Review Panel of the Ecological and Evolutionary Biology Program, National Science Foundation 2004;

Southern Global Change Program (SGCP), Southern Research Station, USDA Forest Service Technical Assistance Visit (TAV), Review and prepare Program Chapter (PC) and Research Working Unit Description (RWUD) for RWD-4852, Nov. 2005; Duke University Research Policy Committee 2006-2008; Chair, Forest Resource Management Program and Resource Ecology Program, Division of Environmental Science and Policy, Nicholas School of the Environment and Earth Sciences, Duke University, 2000 – 2002; Professional Program Advisory Committee of the Nicholas School of the Environment and Earth Sciences, 2000 - 2002; Served on The Executive Committee of the Graduate Program in Ecology, Duke University, 1999 – 2001; Duke University, Durham NC. Working Group on Governance/Structure Division of Environment, 2000; Duke University’s Faculty Academic Council , 1996 – 1999; The Faculty Council of Nicholas School of the Environment (Division of Ecology), 1997 – 1999; Research Committees of the School of the Environment 1995; Acting Chair, Forest Resource Management Program and Resource Ecology Program, School of the Environment, Duke University, 1993-1994

Organized PI meeting of Duke FACE (2001; 2003); Organized the Duke FACE Review Meeting (2003);

Member of the Advisory Panel for the Multi-User Equipment and Instrumentation Resources for Biological Sciences, National Science Foundation, Division of Biological Instrumentation and Resources (1995 – 2002; Previously the Biological Instrumentation and Instrument Development Program)Organized the Annual Meeting of the Southeast Regional Center (SERC) of the National Institute for Global Environmental Change (NIGEC), and led a session on Net Carbon Exchange, November 2001, Reviewed proposals for the National Environmental Research Council of UK, 1999; On the Review Panel of the European Commission’s Environmental Research Programme on Environment and Climate effects on Terrestrial Ecosystems, 1996 – 1998; Member of the Advisory Board of the Southeastern Regional Center, National Institute for Global Climate Change, 1993-1998; Advisor to the Sierra Club, The Scientist-Takes-A-Hike Project, on forest decline along the Appalachian Trail - 1996; A member of the National Steering Committee for Free Air CO2 Enrichment (FACE) experiment in forests -- Participated in writing the Implementation Plan, 1994; Contributor to the Centre For International Forestry Research (CIFOR) Strategic Planning Thematic Papers -- Australian Centre for International Agricultural Research, Canberra, Australia, 1992; Reviewed proposals for NASA

PUBLICATIONS (in bold, research done while Oren's graduate students): Journals In review 1. Daly E, Stoy PC, Siqueira MBS, Juang J-Y, Oren R, Porporato A, Katul GG (in review) Subsurface

CO2 dynamics under different atmospheric CO2 and soil nitrogen conditions in a pine forest. Agricultural and Forest Meteorology.

Resume - Ram Oren

2. Oishi AC, Oren R, Stoy PC (in review) Estimating components of forest evapotranspiration: A footprint approach for scaling sap flux measurements. Agricultural and Forest Meteorology.

3. Novick KA, Oren R, Stoy PC, Juang J-Y, Siqueira MBS, Katul GG (in review) Explaining interspecific variation in canopy conductance with simplified hydraulic architecture. Plant, Cell and Environment.

4. Song C, Band LE, Tague CL, Stoy PC, McCarthy HR, Katul GG, Oren R (in review) Modeling the impacts of canopy structure on energy, water and carbon fluxes through a loblolly pine stand: Uniform vs. gappy canopies. Agricultural and Forest Meteorology.

5. Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, Novick KA, McCarthy HR, Oishi AC, Oren R (in review) The role of vegetation in determining carbon sequestration along ecological succession in the southeastern United States. Global Change Biology.

In press

1. Phillips N, Kim H-S, McCarthy H, Schäfer KVR, Oren R (200x) Canopy stomatal conductance

response to elevated atmospheric CO2 under naturally varying environmental conditions. Tree Physiology

2. Pritchard SG, Strand AE, McCormack ML, Davis MA, Finzi AC, Jackson RB, Matamala R, Rogers HH, Oren R (2007) Fine root dynamics in a loblolly pine forest are influenced by Free-Air-CO2- Enrichment (FACE): a six year minirhizotron study . Global Change Biology 00: 000-000 3. Kim H-S, Oren R, Hinckley TM (0000) Actual and Potential Transpiration and Carbon Assimilation

in an Irrigated Poplar Plantation. Tree Physiology 00: 000-000 4. Ward EJ, Oren R, Sigurdsson BD, Jarvis PG, Linder S (0000) Fertilization effects on mean

stomatal conductance are mediated through changes in the hydraulic attributes of mature Norway spruce trees. Tree Physiology 00: 000-000

5. Oren R, Kull K, Moormets A (0000) Olevi Kull's lifetime contribution to ecology (June 22, 1955 – January 31, 2007). Tree Physiology 00: 000-000

In print

1. McCarthy HR, Oren R, Finzi AC, Ellsworth DS, Kim H-S, Johnsen KH, Millar B (2007)

Temporal Dynamics and Spatial Variability in the Enhancement of Canopy Leaf Area Under Elevated Atmospheric CO2. Global Change Biology 13: 1-19

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

3. Katul G, Porporato A, Oren R (2007) Stochastic dynamics of plant-water interactions. Annual Review of Ecology, Evolution, and Systematics 38:767-791

4. Thérézien M, Palmroth S, Brady R, Oren R (2007) Estimating parameters for the calculations of radiative transfer in canopies based on spatially explicit model of shoot structure. Tree Physiology 27: 1375-1387

5. Stoy PC, Palmroth S, Oishi AC, Siqueira MBS, Juang J-Y, Novick KA, Ward EJ, Katul GG, Oren R (2007) Are ecosystem carbon inputs and outputs coupled at short time scales? A case study from adjacent pine and hardwood forests using impulse-response analysis. Plant Cell & Environment 30: 700-710

6. Juang J-Y, Katul GG, Porporato A, Stoy PC, Siqueira MBS, Detto M, Kim H-S, Oren R (2007) Eco-hydrological controls on summertime convective rainfall triggers. Global Change Biology 13: 1-10

7. Ewers BE, Oren R, Kim H-S, Bohrer G, Lai C-T (2007) Effects of hydraulic architecture and spatial variability in light on mean stomatal conductance of tree branches and crowns. Plant, Cell & Environment 30: 483-496

Resume - Ram Oren

8. Hyvönen R, Ågren GI, Linder S, Persson T, Cotrufo MF, Ekblad A, Freeman M, Grelle A, Janssens IA, Jarvis PG, Kellomäki S, Lindroth A, Loustau D, Lundmark T, Norby RJ, Oren R, Pilegaard K, Ryan MG, Sigurdsson BD, Strömgren M, van Oijen M, Wallin G (2007) The likely impact of elevated [CO2], nitrogen deposition, increased temperature, and management on carbon sequestration in temperate and boreal forest ecosystems. A literature review. Tansley review in New Phytologist 173: 463-480

9. Palmroth S, Oren R, McCarthy HR, Johnsen KH, Finzi AC, Butnor JR, Ryan MG, Schlesinger WH (2006) Aboveground sink strength in forests controls the allocation of carbon belowground and its [CO2]-induced enhancement. Proceedings of the National Academy of Sciences of the United States of America 103:19362-19367.

10. McCarthy HR, Oren R, Finzi AC, Johnsen KH (2006) Canopy leaf area constrains [CO2]-induced enhancement of productivity and partitioning among aboveground carbon pools. Proceedings of the National Academy of Sciences of the United States of America 103: 19356-19361

11. Jaksic V, Kiely G, Albertson J, Oren R, Katul G, Leahy P, Byrne K (2006) Net ecosystem exchange of grassland in contrasting wet and dry years. Agriculture and Forest Meteorology 139: 323-334

12. Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, Novick KA, Uebelherr JM, Oren R (2006) An evaluation of models for partitioning eddy covariance-measured net ecosystem exchange into photosynthesis and respiration. Agricultural and Forest Meteorology 141: 2-18

13. Siqueira MB, Katul GG, Sampson A, Stoy P, Juang J-Y, McCarthy HR, Oren R (2006) Multi-scale model inter-comparison of CO2 and H2O exchange rates above a maturing southeastern pine forest. Global Change Biology 12: 1-19, doi: 10.1111

14. Juang J-Y, Katul GG, Siqueira MB, Stoy PC, Palmroth S, McCarthy HR, Kim HS, Oren R (2006) Modeling nighttime ecosystem respiration from measured CO2 concentration and air temperature profiles using inverse methods. Journal of Geophysical Research 111, D08S05, doi:10.1029/2005JD005976

15. Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, Novick KA, McCarthy HR, Oishi CA, Uebelherr JM, Kim H-S, Oren R (2006) Seperating the effects of climate and vegetation on evapotranspiration along a successional chronosequence in southeastern US. Global Change Biology 12:2115-2135

16. Chuang Y-L, Oren R, Bertozzi AL, Phillips N, Katul GG (2006) The porous media model for the hydraulic system of a tree: from sap flux data to transpiration rate. Ecological Modeling 191:447-468

17. McCarthy HR, Oren R, Johnsen KH, Pritchard SG, Davis MA, Maier C, Kim H-S (2006) Ice storms and management practices interact to affect current carbon sequestration in forests with potential mitigation under future CO2 atmosphere. Journal of Geophysical Research-Atmospheres 111:D15103, doi:10.1029/2005JD006428

18. Oren R, Hsieh C-I, Stoy P, Albertson J, McCarthy HR, Harrell P, Katul GG (2006) Estimating the uncertainty in annual net ecosystem carbon exchange: spatial variation in turbulent fluxes and sampling errors in eddy-covariance measurements. Global Change Biology 12:883-896

19. Addington RN, Donovan LA, Mitchell RJ, Vose JM, Pecot SD, Jack SB, Hacke UG, Sperry JS, Oren R (2006) Adjustments in hydraulic architecture of Pinus palustris maintain similar stomata conductance in xeric and mesic habitats. Plant, Cell & Environment 29:535-545

20. Finzi AC, Moore DJP, DeLUcia EH, Lichter J, Hofmockel KS, Jackson RB, Kim H-S, Matamala R, McCarthy HR, Oren R, Pippen JF, Schlesinger WH (2006) Progressive nitrogen limitation of ecosystem processes under elevated CO2 in a warm-temperate forest. Ecology 87:15-25

21. Williams CG, LaDeau SL, Oren R, Katul GG (2006) Modeling seed dispersal distances: implications to transgenic Pinus taeda. Ecological Applications 16:117-124

22. Norby RJ, DeLucia EH, Gielen B, Calfapietra C, Giardina CP,King JS, Ledford J, McCarthy HR, Moore DJP, Ceulemans R, De Angelis P, Finzi AC, Karnosky DF, Kubiske ME, Lukac M, Pregitzer KS, Scarascia-Mugnozza GE, Schlesinger WH, Oren R (2005) Forest response to elevated CO2 is conserved across a broad range of productivity. Proceedings of the National Academy of Sciences of the United States of America 102:18052-18056

Resume - Ram Oren

23. Bohrer G, Mourad H, Laursen TA, Drewry D, Avissar R, Poggi D, Oren R, Katul GG (2005)Finite element tree crown hydrodynamics model (FETCH) using porous media flow within branching elements: A new representation of tree hydrodynamics. Water Resources Research 41: W11404, doi:10.1029/2005WR004181

24. Palmroth S, Maier CA, McCarthy HR, Oishi AC, Kim H-S, Johnsen K, Katul GG, Oren R (2005) Contrasting responses to drought of forest floor CO2 efflux in a loblolly pine plantation and a nearby oak-hickory forest. Global Change Biology 11: 1-14

25. Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, McCarthy HR, Kim H-S, Oishi AC, Oren R (2005) Variability in net ecosystem exchange from hourly to inter-annual time scales at adjacent pine and hardwood forests: a wavelet analysis. Tree Physiology 25:887–902

26. Mortazavi B, Chanton JP, Prater JL, Oishi AC, Oren R, Katul G (2005) Temporal variability in 13C of respired CO2 in a pine and hardwood forest subject to similar climatic condition. Oecologia 142: 57-69

27. Phillips NG, Oren R, Licata J, Linder S (2004) Time series diagnosis of tree hydraulic characteristics. Tree Physiology 24:879-890

28. Novick K A, Stoy PC, Katul GG, Ellsworth DE, Siqueira MBS, Juang J, Oren R (2004) Carbon dioxide and water vapor exchange in a warm temperate grassland. Oecologia 138: 259-274

29. Luo Y, Su B, Currie WS, Dukes JS, Finzi A, Hartwig U, Hungate B, McMurtrie R, Oren R, Parton WJ, Pataki D, Shaw R, Zak DR, Field C (2004) Progressive nitrogen limitation of ecosystem responses to rising atmospheric CO2. Bioscience 54: 731-739

30. Suwa M, Katul GG, Oren R, Andrews J, Pippen J, Mace A, Schlesinger WH (2004) Impact of elevated atmospheric CO2 on forest floor respiration in a temperate pine forest. Global Biogeochemical Cycles 18: GB2013.10.1029/2003GB002182

31. Addington RN, Mitchell RJ, Oren R, Donovan LA (2004) Stomatal sensitivity to vapor pressure deficit and its relationship to hydraulic conductance in Pinus palustris. Tree Physiology 24: 561-569

32. Pataki DE, Oren R (2003) Species difference in stomatal control of water loss at the canopy scale in a bottomland deciduous forest. Advances in Water Resources 26: 1267-1278

33. Schäfer KVR, Oren R, Ellsworth DS, Lai C-T, Herrick JD, Finzi AC, Richter DD, Katul GG (2003) Exposure to an enriched CO2 atmosphere alters carbon assimilation and allocation in a pine forest ecosystem. Global Change Biology 9: 1378-1400

34. Butnor JR, Johnsen KH, Oren R, Katul GG (2003) Reduction of forest floor respiration by fertilization on both carbon dioxide enriched and reference 17-year-old loblolly pine stands. Global Change Biology 9: 849-861

35. Katul GG, Leuning R, Oren R (2003) Relationship between plant hydraulic and biochemical properties derived from a steady-state coupled water and carbon transport model. Plant, Cell, and Environment 26: 339-350

36. Schäfer KVR, Oren R, Lai CT, Katul GG (2002) Hydrologic balance in an intact temperate forest ecosystem under ambient and elevated atmospheric CO2 concentration. Global Change biology 8: 895-911

37. Lai CT, Katul GG, Butnor J, Siqueira M, Ellsworth D, Maier C, Johnsen K, McKeand S, Oren R (2002) Modeling the limits on the response of net carbon exchange to fertilization in a southeastern pine forest. Plant, Cell, and Environment 25: 1095-1119

38. Nathan R, Katul GG, Horn HS, Thomas SM, Oren R, Avissar R, Pacala SW, Levin SA (2002) Mechanisms of long-distance dispersal of seeds by wind. Nature 418: 409-413

39. Lai CT, Katul G, Butnor J, Ellsworth D, Oren R (2002) Modeling night-time ecosystem respiration by a constrained source optimization method. Global Change Biology 8: 124-141

40. Sperry JS, Hacke UG, Oren R, Comstock JP (2002) Water deficits and hydraulic limits to leaf water supply. Plant, Cell and Environment 25: 251-263

41. Oren R, Ellsworth DE, Johnsen KH, Phillips N, Ewers BE, Maier C, Schäfer KVR, McCarthy H, Hendrey G, McNulty SG, Katul GG (2001) Soil fertility limits carbon sequestration by forest ecosystems in a CO2-enriched atmosphere. Nature 411:469-472 (including cover and summary in news and views Nature 411:431-433)

42. Metzger JM, Oren R (2001) The effect of crown dimensions on transparency and the assessment of tree health. Ecological Applications 11:1634-1640

43. Katul GG, Lai C-T, Albertson JD, Vidakovic B, Schäfer KVR, Hsieh C-I, Oren R (2001) Quantifying the complexity in mapping energy inputs and hydrologic state variables into land-surface Fluxes. Geophysical Research Letters 28:3305-3307

Resume - Ram Oren

44. Katul GG, Lai C-T, Schäfer K, Vidakovic B, Albertson JD, Ellsworth D, Oren R (2001) Multiscale analysis of vegetation surface fluxes: from seconds to years. Advances in Water Resources 24:1119-1132

45. Ewers BE, Oren R, Phillips N, Strömgren M, Linder S (2001) Mean canopy stomatal conductance responses to water and nutrient availability in Picea abies and Pinus taeda. Tree Physiology 21:841-850

46. Phillips N, Oren R, Linder S, Bergh J (2001) Effects of nutrition and soil water availability on water use in a Norway spruce stand. Tree Physiology 21:851-860

47. Schulze W, Schulze ED, Schulze I, Oren R (2001) Quantification of insect nitrogen utilization by the Venus fly trap Dionaea muscipula catching prey with highly variable isotope signatures. Journal of Experimental Botany 52:1041-1049

48. Oren R, Pataki D (2001) Transpiration in response to variation in microclimate and soil moisture in southeastern deciduous forests. Oecologia 127:549-559

49. Johnsen, KH, Wear D, Oren R, Teskey RO, Sanchez F, Will R, Butnor J, Markewicz D, Richter D, Rials T, Allen HL, Seiler J, Ellsworth D, Maier C, Samuelson L, Katul G (2001). Meeting global policy commitments: Carbon sequestration and southern pine forests. Journal of Forestry 99:14-21

50. Phillips N, Oren R (2001) Intra- and inter-annual variation in transpiration of a pine forest in relation to environmental variability and canopy development. Ecological Applications 11:385-396

51. Ewers BE, Oren R, Johnsen KH, Landsberg JJ (2001) Estimating maximum mean canopy stomatal conductance for use in models. Canadian Journal of Forest Research 31:198-207

52. Oren R, Sperry JS, Ewers BE, Pataki DE, Phillips N, Megonigal JP (2001) Sensitivity of mean canopy stomatal conductance to vapor pressure deficit in a flooded Taxodium distichum L. forest – hydraulic and non-hydraulic effects. Oecologia 126:21-29

53. Lai C-T, Katul G, Oren R, Ellsworth D, Schäfer KVR (2000) Modeling CO2 and water vapor turbulent flux distributions within a forest canopy. Journal of Geophysical Research 105:26333-26351

54. Ewers BE, Oren R, Sperry JS (2000) Influence of nutrient versus water supply on hydraulic architecture and water balance in Pinus taeda. Plant, Cell and Environment 23:1055-1066

55. Hacke UG, Sperry JS, Ewers BE, Schäfer KVR, Oren R, Ellsworth DS (2000) Influence of soil porosity on water use in Pinus taeda. Oecologia 124:495-505

56. Pataki DE, Oren R, Smith WK (2000) Sap flux of co-occurring species in a western subalpine forest during seasonal soil drought. Ecology 81:2557-2566

57. Lai C-T, Katul G, Ellsworth D, Oren R (2000) Modeling vegetation-atmosphere CO2 exchange by a coupled eulerian-lagrangian approach. Boundary Layer Meteorology 95:91-122

58. Ewers BE, Oren R (2000) Analysis of assumptions and errors in the calculation of stomatal conductance from sap flux measurements. Tree Physiology 20:579-590

59. Schäfer KVR, Oren R, Tenhunen JD (2000) The effect of tree height on crown-level stomatal conductance. Plant, Cell and Environment 23:365-377

60. Oren R, Sperry JS, Katul GG, Pataki DE, Ewers BE, Phillips N, Schäfer KVR (1999) Survey and synthesis of intra- and interspecific variation in stomatal sensitivity to vapour pressure deficit. Plant, Cell and Environment 22:1515-1526

61. Phillips N, Oren R, Zimmermann R, Wright SJ (1999) Temporal patterns of water flux in trees and lianas in a Panamanian moist forest. Trees 14:116-123

62. Katul G, Hsieh C-I, Bowling D, Clark K, Shurpali N, Turnipseed A, Albertson J, Tu K, Hollinger D, Evans B, Orff B, Anderson D, Ellsworth D, Vogel C, Oren R (1999) Spatial variability in turbulent fluxes in the roughness sublayer of an even-aged pine forest. Boundary-layer Meteorology 93:1-28

63. Oren R, Phillips N, Ewers BE, Pataki DE, Megonigal PJ (1999) Sap flux-scaled transpiration in response to light, vapor pressure deficit, and leaf area reduction in a flooded Taxodium distichum L. forest. Tree Physiology 19:337-347

64. Ewers BE, Oren R, Albaugh TJ, Dougherty PM (1999) Carry-over effects of long term water and nutrient supply on short term water use in Pinus taeda trees and stands. Ecological Applications 9:513-525

65. Pataki DE, Oren R, Tissue DT (1998) Elevated carbon dioxide does not affect stomatal conductance of Pinus taeda L. Oecologia 117:47-52

Resume - Ram Oren

66. Oren R, Ewers BE, Todd P, Phillips N, Katul G (1998) Water balance delineates the soil layer in which moisture affects canopy conductance. Ecological Applications 8:990-1002

67. Pataki DE, Oren R, Phillips N (1998) Responses of sap flux and stomatal conductance of Pinus taeda L. trees to stepwise reductions in leaf are. Journal of Experimental Botany 49:871-878

68. Pataki DE, Oren R, Katul G, Sigmon J (1998) Canopy conductance of Pinus taeda, Liquidambar styraciflua and Quercus phellos under varying atmospheric and soil moisture conditions. Tree Physiology 18:307-315

69. Phillips N, Oren R (1998) A comparison of two daily representations of canopy conductance based on two conditional time-averaging methods and the dependence of daily conductance on environmental factors. Annales des Sciences Forestieres 55:217-235

70. Oren R, Phillips N, Katul G, Ewers BE, Pataki DE (1998) Scaling xylem sap flux and soil water balance and calculating variance: a method for partitioning water flux in forests. Annales des Sciences Forestieres 55:191-216

71. Hogg EH, Black TA, den Hartog G, Neumann HH, Zimmermann R, Hurdle PA, Blanken PD, Nesic Z, Yang PC, Staebler RM, McDonald KC, Oren R (1997) A comparison of sap flow and eddy fluxes of water vapor from a boreal deciduous forest. Journal of Geophysical Research 102:28,929-28,937

72. Way J, Zimmermann R, Rignot EJ, McDonald K, Oren R (1997) Winter and spring thaw as observed with imaging radar at BOREAS. Journal of Geophysical Research 102:29,673-29,684

73. Phillips N, Nagchaudhuri A, Oren R, Katul G (1997) Time constant for water transport in loblolly pine trees estimated from time series of evaporative demand and stem sapflow. Trees 11:412-419

74. Katul G, Oren R, Ellsworth D, Hsieh C-I, Phillips N (1997) A Lagrangian dispersion Model for Predicting CO2 sources, sinks, and fluxes in uniform loblolly pine stand. Journal of Geophysical Research 102:9309-9321

75. Katul G, Todd P, Pataki D, Kabala ZJ, Oren R (1997) Soil water depletion by oak trees and the role of root water uptake on the moisture content spatial statistics. Water Resources Research 33:611-623

76. Katul G, Hsieh C-I, Oren R, Ellsworth D, Phillips N (1996) Latent and sensible heat flux from uniform forests using surface renewal and flux variance methods. Boundary Layer Meteorology 80:249-282

77. Phillips N, Oren R, Zimmermann R (1996) Radial trends in xylem sap flow in non-, diffuse- and ring-porous species. Plant, Cell and Environment 19:983-990

78. Oren R, Zimmermann R, Terborgh J (1996) Transpiration response of upper Amazonia floodplain and upland trees and forests to drought braking rains. Ecology 77:968-973

79. Waring RH, Way J, Hunt R, Morrisey L, Ranson KJ, Weishampel J, Oren R, Franklin SE (1995) Remote sensing with synthetic aperture radar in ecosystem studies. Bioscience 45:715-723

80. Ellsworth D, Oren R, Ce Huang, Phillips N, Hendrey G (1995) Leaf and canopy responses to elevated CO2 in a pine forest using a free-air CO2 enrichment technique. Oecologia 104:139-146

81. Buchmann N, Oren R, and Zimmermann R (1994) Response of magnesium-deficient sapling in a young, open stand of Picea abies (L.) Karst. to elevated soil magnesium, nitrogen and carbon. Environmental Pollution 87:31-43

82. Way J, Rignot EJM, McDonald KC, Oren R, Kwok R, Bonan G, Dobson MC, Viereck LA, Roth JE (1994) Evaluating the type and state of Alaska taiga forests with imaging radar for use in ecosystem models. IEEE Geoscience and Remote Sensing Transactions 32:353-370

83. Berger A, Oren R, Schulze E-D (1994) Element concentrations in the xylem sap of Picea abies (L.) Karst. seedlings extracted using various methods under different environmental conditions. Tree Physiology 14:111-128

84. Oren R, Werk KS, Buchmann N, Zimmermann R (1993) Chlorophyll-nutrient relationships as an index to nutrient limitation in Picea abies (L.) Karst. stands at different stages of decline. Canadian Journal of Forest Research 23:1187-1195

85. Buchmann N, Oren R, Gebauer G, Dietrich P, Schulze E-D (1992) The use of stable isotopes in ecosystem research - first results of a field study with 15N. Die Isotopenpraxis 28:51-71

86. Katz C, Oren R, Schulze E-D, Milburn JA (1989) Uptake of water and solutes through twigs of Picea abies (L.) Karst. Trees 3:33-37

Resume - Ram Oren

87. Oren R, Schulze E-D, Werk KS, Meyer J, Schneider BU, Heilmeier H (1988) Performance of two Picea abies (L.) Karst. stands at different stages of decline. I. Carbon relations and stand growth. Oecologia (Berlin) 75:25-37

88. Zimmermann R, Oren R, Schulze E-D, Werk KS (1988) Performance of two Picea abies (L.) Karst. stands at different stages of decline. II. Photosynthesis and leaf conductance. Oecologia (Berlin) 76:513-518

89. Werk KS, Oren R, Schulze E-D, Zimmermann R, Meyer J (1988) Performance of two Picea abies (L.) Karst. stands at different stages of decline. III. Canopy transpiration of green trees. Oecologia (Berlin) 76:519-524

90. Osonubi O, Oren R, Werk KS, Schulze E-D, Heilmeier H, (1988) Performance of two Picea abies (L.) Karst. stands at different stages of decline. IV. Xylem sap concentrations of magnesium, calcium, potassium and nitrogen. Oecologia (Berlin) 77:1-6

91. Meyer J, Schneider BU, Werk KS, Oren R, Schulze E-D (1988) Performance of two Picea Abies (L.) Karst. stands at different stages of decline. V. Root tips and ectomycorrhiza development and their relations to above-ground and soil nutrients. Oecologia (Berlin) 77:7-13

92. Oren R, Werk KS, Schulze E-D, Meyer J, Schneider BU, Schramel P (1988) Performance of two Picea abies (L.) Karst. stands at different stages of decline. VI. Nutrient concentrations. Oecologia (Berlin) 77:151-162

93. Oren R, Schulze E-D, Werk KS, Meyer J (1988) Performance of two Picea abies (L.) Karst. stands at different stages of decline. VII. Nutrient relations and growth. Oecologia (Berlin) 77:163-173

94. Oren R, Waring RH, Stafford SG, Barrett JW (1987) Twenty-four years of Ponderosa pine growth in relation to canopy leaf area and understory competition. Forest Science 33:538-547

95. Steudle E, Oren R, Schulze E-D (1987) Water transport in maize roots: Measurements of hydraulic conductivity, solute permeability, and of reflection coefficients of excised roots using the root pressure probe. Plant Physiology 84:1220-1232

96. Oren R, Schulze E-D, Matyssek R, Zimmermann R (1986) Estimating photosynthetic rate and annual carbon gain in conifers from specific leaf weight and leaf biomass. Oecologia (Berlin) 70:187-193

97. Oren R, Werk KS, Schulze E-D (1986) Relationship between foliage and conducting xylem in Picea abies (L.) Karst. Trees 1:61-69

98. Oren R, Thies WG, Waring RH (1985) Tree vigor and stand growth of Douglas-fir as influenced by laminated root rot. Canadian Journal of Forest Research 15:985-988

99. Larsson S, Oren R, Waring RH, Barrett JW (1983) Attacks of mountain pine beetles as related to tree vigor of ponderosa pine. Forest Science 29:395-402

100. Waring RH, Schroeder PE, Oren R (1982) Application of the pipe model theory to predict canopy leaf area. Canadian Journal of Forest Research 12:556-560

Books, Book Chapters and Book Reviews 1. Schlesinger WH, Bernhardt ES, DeLucia EH, Ellsworth DS, Finzi AC, Hendrey GR, Hofmockel KS,

Lichter J, Matamala R, Moore D, Oren R, Pippen JS, Thomas RB (2006) The Duke Forest FACE Experiment: CO2 Enrichment of a Loblolly Pine Forest. In: J.Nösberger, S.P.Long, R.J.Norby,M.Stitt, G.R.Hendrey,H.Blum (Eds.) Managed Ecosystems and CO2 Case Studies,Processes, and Perspectives. Ecological Studies,Vol. 187 Springer-Verlag Berlin Heidelberg

2. Katul G, Williams CG, Siqueira M, Poggi D, Porporato A, McCarthy H, Oren R (2006) Dispersal of Transgenic Conifer Pollen. In: Williams C (ed.) Landscapes, Genomics & Transgenic Conifer Forests. Springer Publishers, Dordrecht, Nederlands, pp. 121-146

3. Katul GG, Lai C-T, Siqueira M., Schäfer K, Albertson JD, Wesson K, Ellsworth D, Oren R (2001) Inferring Scalar Sources and Sinks within Canopies using Forward and Inverse Methods. In: Lakshmi V and Albertson JD (eds) Observations and modeling of land-surface fluxes within hydrologic systems. Water Science and Application 3:31-45. American Geophysical Union, Washington D.C.

4. Oren R (1999) Invited Book Review of Paul G Jarvis (ed) European Forests and Global Change: The Likely Impacts of Rising CO2 and Temperature. The Quarterly Review of Biology 74:485-486

Resume - Ram Oren

5. Oren R (1996) Nutritional disharmony - soil and weather effects on source-sink interactions. In: Iqbal M and Yunus M (eds) Plant Response to Air Pollution, pp 75-98. John Wiley & Sons, Chichester, England

6. Oren R, Sheriff DW (1995) Water and nutrient acquisition by roots and canopies. In: Smith WK, Hinckley TM (eds) Resource Physiology of Conifers, pp 39-74. Academic Press, San Diego

7. Matyssek R, Reich P, Oren R, Winner WE (1995) Response mechanisms of conifers to air pollutants. In: Smith WK, Hinckley TM (eds) Ecophysiology of Coniferous Forests, pp 255-308. Academic Press, San Diego

8. Luxmoore RJ, Oren R, DW Sheriff, Thomas RB (1995) Source - sink - storage relationships of conifers. In: Smith WK, Hinckley TM (eds) Resource Physiology of Conifers, pp 179-216. Academic Press, San Diego

9. Margolis H, Oren R, Whitehead D, Kaufmann MR (1995) Leaf area dynamics of conifer forests. In: Smith WK, Hinckley TM (eds) Ecophysiology of Coniferous Forests, pp 255-308. Academic Press, San Diego

10. Schulze E-D, Lange OL, Oren R (eds; 1989) Air pollution and forest decline: A study of spruce (Picea Abies) on acid soils. Ecological Studies Series Vol 77, Springer Verlag (Berlin Heidelberg). 475p

11. Oren R, Werk KS, Meyer J, and Schulze E-D (1989). Potentials and Limitations of Field Studies on Forest Decline Associated with Anthropogenic Pollution. In Schulze E-D, Lange OL, Oren R, (eds) Forest Decline and Air Pollution: A study of spruce (Picea abies (L.) Karst.) on acid soils. Ecological Studies Series Vol 77 23:36, Springer Verlag (Berlin)

12. Schulze E-D, Oren R, and Lange OL (1989). Processes Leading to Forest Decline: A Synthesis. In Schulze E-D, Lange OL, Oren R, (eds) Forest Decline and Air Pollution: A study of spruce (Picea abies (L.) Karst.) on acid soils. Ecological Studies Series Vol 77:459-468, Springer Verlag (Berlin)

13. Oren R, and Schulze E-D (1989) Nutritional Disharmony and Forest Decline: A Conceptual Model. In Schulze E-D, Lange OL, Oren R, (eds) Forest Decline and Air Pollution: A study of spruce (Picea abies (L.) Karst.) on acid soils. Ecological Studies Series Vol 77 425-443, Springer Verlag (Berlin)

14. Oren R, Zimmermann R (1989) CO2 assimilation and the carbon balance of healthy and declining Norway spruce stands. In Schulze E-D, Lange OL, Oren R (eds) Forest Decline and Air Pollution: A study of spruce (Picea abies (L.) Karst.) on acid soils. Ecological Studies Series Vol 77, 352-369. Springer Verlag (Berlin)

15. Katz C, Oren R, Schulze E-D, Steudle E (1989) Uptake of Water and solutes through bark and needle surfaces. In Schulze E-D, Lange OL, Oren R (eds) Forest Decline and Air Pollution: A study of spruce (Picea abies (L.) Karst.) on acid soils. Ecological Studies Series Vol 77 218-221, Springer Verlag (Berlin)

INVITED PRESENTATIONS • Tree water relations in a future world with atmosphere enriched with greenhouse gasses. Keynote

Speaker, Third EcoFizz Conference: The Impacts of Global Change on Plants and Ecosystems. Hawkesbury Campus, University of Western Sydney, Richmond, NSW, Australia 27-28 September, 2007

• The effect of elevated CO2 on biomass production and carbon allocation in forests: A synthesis of results from FACE experiments (R. Oren and S. Linder). Opening Address, International Symposium on Forest Soils and Ecosystem Health: Linking Local Management to Global Change Challenges, Noosa, Queensland, Australia 19-23 August, 2007

• Carbon Cycling in Forests: Effects of Increasing Atmospheric [CO2] on Production & Carbon Sequestration. (2007) National Defense Industrial Association (NDIA) - 2007 Joint Services Environmental Management (JSEM) and Geospatial Information & Services Conference: Energy Section. Columbus Ohio May 2007

• Responses of forests to atmosphere enriched with CO2. 34th Annual Association of Graduate Students in the Biological Sciences (AGSBS) Symposium at York University, Toronto, Ontario. March 24, 2007

Resume - Ram Oren

• Responses of forest trees in plantations and natural settings to atmosphere enriched with CO2. Tree Physiology Working Group Session entitled: The contributions of tree physiology to understanding the effects of climate change, IUFRO World Congress; Brisbane, Australia, August 2005. The International Forestry Review 7: 95.

• Ecosystem responses to increased atmospheric CO2 concentration: Interactions with spatial and temporal variation in nitrogen and water. Session on Forests in a CO2 Enriched World, Symposium on Plant-/Ecophysiology, Biogeochemical Cycles, XVII International Botanical Congress; Vienna, Austria, July 2005 (With H McCarthy and S Palmroth).

• Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. 2003 World Conference on Natural Resource Modeling. Beufort, North Carolina, June 2003

• Linking water to carbon balance at the Duke Forest FACE based on sapflux –scaled conductance. European Science Foundation Life and Environmental Sciences Exploratory Workshop on CO2 and Water. Basel, Switzerland, August 2002. (with KVR Schäfer).

• Flux-net of terrestrial carbon – results from comparison among three vegetation types at the Duke Forest. Ninth U.S.-Japan Workshop on Global Change, Working Group on International Research and Cooperation of the Subcommittee on Global Change of the National Science and Technology Council. Tokyo, Japan, October 2001.

• Carbon cycle management in forests – effect of soil fertility in a loblolly pine plantation under elevated atmospheric CO2. Ninth U.S.-Japan Workshop on Global Change, Working Group on International Research and Cooperation of the Subcommittee on Global Change of the National Science and Technology Council. Tokyo, Japan, October 2001.

• The effects of hydraulic properties of plant and soil on ecosystem transpiration. In: Soil Hydraulic Properties, an annual workshop on Physics Applied to Agriculture, Agrophysics’2000, sponsored by the Cuban Society of Physics. Havana, Cuba, December, 2000

• Environmental controls of mean stomatal conductance, in Carbon, Nitrogen, and Water at Multiple Scales. A symposium at Oregon State University, Corvallis. September, 2000

• Controls on ecosystem water use. In The Water Limitation: Issues in Plant, Community, and Ecosystem Water Use. Abstracts of Ecological Society of American 85th Annual Meeting. Snowbird, Utah, August 2000

• Canopy structure, climate change, carbon sequestration and forest management, Keynote lecture In Canopy Dynamics and Forest Management – A Missing Link? A joint workshop organized by IUFRO and IGPB/GCTE, Estonia, Finland and Sweden, August 1999

• Variation in sap flux-scaled conductance in relation to site, species and height. Toward Accurate Predictions of Southern Pine Productivity and Function Via Process Level Models. USDA Forest Service. Asheville, North Carolina, June 1999

• Evapotranspiration: Theory, Determination and Modeling. An annual workshop on Physics Applied to Agriculture, Agrophysics’98, sponsored by the Cuban Society of Physics. Havana, Cuba, November, 1998

• Linking tree water uptake and canopy transpiration – potentials and limitations. Tropical Forest Canopy Workshop, Smithsonian Tropical Research Institute, Panama City, March, 1997

• Using xylem heat flux sensors and local mass balance or eddy correlation to partition transpiration between over- and understory plants in a pine forest. Special Session on Forest-Atmosphere Interactions: Mass, Momentum, and Energy Transport Processes from Forested Systems II. American Geophysical Union Meeting, San Francisco, California, December, 1996

• Combining sapflow and repeated soil moisture measurements with stand characteristics to partition transpiration between over- and understory plants in forests. Water Flux Regulation in Forest Stands. EUROFLUX-BAHC-BITÖK Workshop, Castle Thurnau, Germany, September 1996

• Forest dieback in the Fichtelgebirge in relation to transpiration and water balance. EUROFLUX-BAHC-BITÖK Workshop, Castle Thurnau, Germany, September 1996

• Scaling water uptake from trees to stand and quantifying environmental effects on canopy conductance. In: Advances in the Estimation of Forest Canopy and Whole-Ecosystem Trace Gas Fluxes using Micrometeorological Approaches. Ecological Society of America Annual Meeting, Providence, Rhode Island, August 1996

Resume - Ram Oren

• The Role and Responses of Ecosystems to Global Change. The Fifth Earth Science Summer School on Processes of Global Change. California Institute of Technology, Pasadena, July, 1996

• Potentials and limitations of field studies on forest decline and air pollution effects. Appalachian Mountain Forest Decline: Science Meets the Grassroots. The Lucy Braun Association for the Mixed Mesophytic Forest and the USDA, Forest Service. University of Charleston, West Virginia, March 1996

• The Role and Responses of Ecosystems to Global Change. The Fifth Earth Science Summer School on Processes of Global Change. California Institute of Technology, Pasadena, July, 1995

• Terrestrial Ecosystem Responses to Global Climate Change. Global Change Workshop for Teachers. California Institute of Technology, Pasadena, July, 1995

• Responses of Trees and Forest Ecosystems to N deposition. 24th Air Pollution Workshop: Impacts of Pollutants on Natural Ecosystems. College Park, Maryland. April 1992

• Nutritional disharmony and spruce decline: In Symposium on the Physiological Effects of Air Pollution. The Belgian Society of Plant Physiology Meeting. Louvain-la-Neuve, Belgium. May 1988

OTHER PRESENTATIONS Invited seminars • CO2 uptake in forests—Canopy Conductance Constrained Carbon Assimilation (4C-A). September

4, 2006, Ph.D. Course (Sept. 4-14) on Canopy Structure and Function, Järvselja, Estonia • Sap flux, soil moisture, and soil-plant hydraulics. September 5, 2006. Ph.D. Course (Sept. 4-14)

on Canopy Structure and Function, Järvselja, Estonia • CO2 uptake in forests–effects of canopy structure and plant hydraulics. Ecology Center, Utah State

University, Logan Utah, 27 October 2005 • Responses of forest trees in plantations and natural settings to atmosphere enriched with CO2.

Ecology Center, Utah State University, Logan Utah, 26 October 2005 • Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. Department

of Civil and Environmental Engineering, Duke University, Mechanisc and the Environment seminar, November 2004

• Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. Department of Civil and Environmental Engineering, University of Connecticut, Storrs, September 2003.

• Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. School of Forestry, Northern Arizona University, Flagstaff, Arizona, September 2003.

• Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. Biology Department, Wake Forest University, North Carolina, September 2003.

• Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. Department of Geography, University of North Carolina at Chapel Hill, August 2003.

• Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. Biology Department, Duke University, Durham, North Carolina, September 2003

• Linking water to carbon balance at the Duke Forest FACE based on sapflux-scaled conductance. Boston University Department of Geography Seminar Series on Scaling and Variance in Ecological Processes and Atmosphere Exchanges. Boston, November 22, 2002

• Measurements and Modeling of Carbon Sequestration and Water Use by Loblolly Pine Forest at the AmeriFlux Duke FACE Site. School of Natural Resource Science, University of Nebraska & USDA National Agroforestry Center, Lincoln. May 2, 2002

• Canopy Conductance-Constrained CO2 Assimilation (4C-A) and Carbon Allocation in Pine Forest Under Ambient and Elevated CO2 Atmosphere. Global Change Education Program (GCEP). University of Florida, Gainesville. June 13, 2002

• Potential Effects of Plant Hydraulics on Gross Primary Productivity. South China Institute of Botany, Chinese Academy of Science. Guangzhou. May 11, 2001

Resume - Ram Oren

• Responses of A Maturing Pine Stand to Experimental Increase in Atmospheric CO2. Zhongshan University, Guangzhou. May 11, 2001

• Effects of Plant Hydraulics on Mean Canopy Stomatal Conductance. Northeast Forestry University, Harbin. May 14, 2001

• Responses of A Maturing Pine Stand to Experimental Increase in Atmospheric CO2. Beijing Normal University. May 15, 2001

• Responses of A Maturing Pine Stand to Experimental Increase in Atmospheric CO2. Beijing Institute of Botany, Chinese Academy of Science. May 17, 2001

• Hydraulic Controls on Stomatal behavior. Department of Civil and Environmental Engineering, Duke University, Durham, NC. 2000

• Hydraulic Controls of Stand Transpiration. Jones Ecological Research Center. Newton, Georgia, October 27, 2000

• Physiological and Environmental Controls of Canopy Stomatal Conductance. Department of Botany Seminar, North Carolina State University, Raleigh, N.C. April 14, 1999

• Response of Sap Flux-Scaled Conductance to Vapor Pressure Deficit: Intra- and Inter Specific Variation. Department of Biology Seminar Series, Appalachian State University, Boone, NC, October, 1998

• Intra and Interspecific Variation in Average Canopy Stomatal Conductance – Effects of Site, Stand, and Tree Characteristics. Ecology Seminars, Department of Botany, Duke University, Durham, NC, October, 1998

• Temporal and Spatial Variations in the Development of Drought Stress. School of Forestry Seminar, North Carolina State University, Raleigh, North Carolina. April, 1994

• Do Trees in Moist Environments Experience Drought? Examples from Peru to Alaska. Ecology Seminars, Department of Botany, Duke University, Durham, North Carolina. February, 1994

• Eco-physiology in an Ecosystem Context: Examples from Air Pollution and Forest Hydrology Research. Department of Botany, University of Würzburg, FRG, November, 1992

• Ecophysiology in an Ecosystems Context: Examples from Air Pollution Research. Department of Botany Seminar, University of Wyoming, Laramie, Wyoming. October, 1992

• The Role of Transpiration in Regional Water Cycles in Tropical Ecosystems: Implication for Development of Project. International Society of Tropical Foresters. Raleigh, North Carolina. April 1992

• Transpiration in the Context of Seasonal Water Budget - Implications of Tropical Deforestation and Global Warming. 1992 Spring Seminar Series, Duke University Marine Laboratory. Beaufort, North Carolina. April 1992

• Is Ecophysiology on a Hectare Scale Remotely Sensible? Department of Forestry and Wood Technology, Colorado State University, Fort Collins, Colorado. September 1990

• Forest Decline and Air Pollution - A Synthesis. University of Laval, Quebec. March, 1987 Meetings and Symposia • Landscapes, Genomics & Transgenic Conifer Forests. Ecosystem Interface with Biotechnology

Products (Discussion Leader). A Nicholas Environmental Leadership Forum, Nicholas School of Environmental & Earth Sciences, Duke University, Durham, NC, November, 2004

• Canopy conductance constrained carbon assimilation – balancing the carbon budget of Duke FACE. Principle Investigators Meeting for the Free Air CO2 Enrichment Project August, 2003

• C source-sink response to CO2 and N Duke FACE Review Meeting, Duke University, Durham, NC, September, 2003

• Site measurements and model validation. Session on CO2 Measurement & Carbon Cycle/Sequestration Modeling, Terrestrial Carbon Processes (TCP-BER-Office of Science-DOE) Program Meeting, Boulder, Colorado, October, 2003

• Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. Session on Carbon Cycle & Carbon Sequestration, Terrestrial Carbon Processes (TCP-BER-Office of Science-DOE) Program Meeting, Boulder, Colorado, October, 2003

• Soil fertility modifies source-sink interactions and carbon sequestration in a pine forest under ambient and elevated CO2 concentrations (with Johnsen K, McCarthy H, Butnor J, Schäfer KVR,

Resume - Ram Oren

Maier C, Palmroth S) USDA Symposium on Natural Resource Management to Offset Greenhouse Gas Emissions, Raleigh, North Carolina, November 19-21, 2002

• Measurements and modeling of net carbon exchange over a southeastern loblolly pine plantation at the Duke Forest AmeriFlux site (with Schäfer KVR, Lai C-T, Siqueira M, Johnsen K, Butnor J, Maier C, Palmroth S, Katul G). Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Kennedy Space Center, Florida, November 5-6, 2002

• Measurements and modeling of net carbon exchange over a southeastern loblolly pine plantation at the Duke Forest AmeriFlux site. Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Durham, North Carolina, November 28-29, 2001

• Effects of nutrient availability on carbon sequestration response to elevated atmospheric CO2. DOE Terrestrial Science Team Meeting, Argonne National Laboratory, Argonne, Illinois, October 29 – November 1, 2001

• Measurements and modeling of net carbon exchange over a southeastern loblolly pine plantation at the Duke Forest AmeriFlux site. Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Tallahassee, Florida, November 28-29, 2000

• Downregulation? FACE Investigators Meeting. Duke University. Durham N.C., October 21, 2000 • Water Budgets. FACE Investigators Meeting. Duke University. Durham N.C., October 21, 2000 • Measurements and modeling of net carbon exchange over a southeastern loblolly pine plantation

at the Duke Forest AmeriFlux site. Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Tuscaloosa, Alabama, March 2000

• Carbon fluxes in a managed pine forest under ambient and elevated CO2. Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Tuscaloosa, Alabama, March 1999

• Modeling Carbon-Nutrient Interactions of Forests Under Climate Change. A GCTE Programme Core Research Project. Vindeln, Sweden, September, 1998

• Observations from Forest-Atmosphere Carbon Transfer and Storage (FACTS) experiment using the Free Air CO2 Enrichment (FACE) technique in a young Pinus taeda forest. Environmental Protection Efforts in the United States: A Regional Project for Europe. International Visitors Council, Research Triangle, N.C. June 19, 1998

• Carbon fluxes in a managed pine forest under ambient and elevated CO2. Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Tuscaloosa, Alabama, February 1998

• First indication of pine forest responses to elevated CO2 – reduced canopy conductance, increased canopy leaf-area and aboveground biomass increment (with Nathan Phillips, Brent Ewers, Diane Pataki, and Gabriel Katul). In: FACE Science Conference. Duke University, Durham, North Carolina, November 1996



• Water-use of managed pine and natural hardwood forests: Scaling ground-based measurements to the ecosystem level. Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Tuscaloosa, Alabama, April 1995

• Water-Use by Managed Pine and Natural Hardwood. Co-sponsors include the Southeastern Regional Center, National Institute for Global Environmental Change. Annual Meeting, Oak Ridge National Laboratory, Oak Ridge, Tennessee, April 1994

• Water-Use by Managed Pine and Natural Hardwood: Scaling Ground Measurements with Weather Data. Southeastern Regional Center, National Institute for Global Climate Change Annual Meeting, Tuscaloosa, Alabama, April 1993

• Water-use of managed pine and natural hardwood forests: Scaling ground-based measurements to the ecosystem level. Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Tuscaloosa, Alabama, April 1992

Resume - Ram Oren

• Approaches to Vegetation Mapping and Ecophysiological Hypothesis Testing Using Combined Information from TIMS, AVIRIS, and AIRSAR. The Third Annual JPL Airborne Geoscience Workshop (AIRSAR, AVIRIS, TIMS). June 1991

• Forest Stand Dynamics and Influence on Radial Growth and Productivity. International Symposium on Ecological Aspects of Tree-ring Analysis. Palisades, New York, August, 1986

• Predicting Consequences of Intensive Forest Harvesting on Long-Term Productivity. IEA/FE Project CPC-10. Jadraas, Sweden. May 1986

• Forest Decline: The Effects of Acid Rain on Above and Below Ground Components. EEC Conference. Julich, Federal Republic of Germany. October 1985

Workshops • FACE Data Management Workshop. Oak Ridge National Laboratory (ORNL), February 8-9, 2007 • Author Team Meeting for Synthesis and Assessment Report (SAP 4.3). The Effects of Climate

Change on U.S. Agriculture, Biodiversity, and Land and Water Resources. NCAR/UCAR, Boulder, Colorado, January 25-26, 2007

• IUFRO Canopy Processes Working Group’s Workshop in the Northeastern USA: Kim H-S, Oren R (2006) Estimating Canopy Photosynthesis in Mixed-Species Forests with the Canopy Conductance Constrained Carbon Assimilation (4C-A) Model. A special session. Boston, October 6-13, 2006

• U.S. Climate Change Science Program (CCSP) Workshop Abstract: Ram Oren, Heather McCarthy, Sari Palmroth, Kurt Johnsen (2005) Summer and winter precipitation: Effects on carbon sequestration and timber production under current and future atmospheric [CO2]. Climate Science in Support of Decision Making. Arlington, Virginia, November 14-16, 2005

• Progressive Nitrogen Limitation of Plant and Ecosystem Responses to Elevated CO2 (discussion co-leader with C. Field). National Center for Ecological Analysis and Synthesis (NCEAS), University of California, Santa Barbara. June 18-21, 2002

• Terrestrial Ecosystems Research Facilities (TERF) Workshop. Washington D.C. November, 2000 • The second National Ecological Observatory Network (NEON) workshop. San Diego, California,

March, 2000 • Forest Effects of Soil Acidification. Acid Rain, Ozone, and the Great Eastern Forest. Appalachian

Voices. Duke University, Durham, North Carolina, March 1999 • Forestry Experimental Network. A GCTE Programme Core Research Project. Vindeln, Sweden,

September, 1998 • Responses of pine forests to elevated atmospheric CO2: First stand-level results from FACE. A

workshop for participating sites in the Network of Intensive Experimental Sites for Assessing Global Change Impacts on Managed Forests. IGBP/GCTE Activity 3.5. Lycksele, Sweden, August, 1995

• Technical Means for Meeting Environmental Information Needs Early in Next Century. Global Environmental Monitoring: Pathways for Responsible Planetary Management. World Resources Institute/California Institute of Technology. June, 1993

• The Ecophysiology of Coniferous Stands: Past and Future. Jackson Hole, Wyoming. September 1991

• An Integrated, Multi-disciplinary Approach to Identification and Study of Forest Decline from Air Pollution. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA. June 1989

TEACHING Awards Graduate Student's Best Professor Award, 1992 Graduate Students • Christina Katz, Diplom, Department of Ecology, Universität Bayreuth. Graduated 1991, (Ph.D.

1994). Research Topic: Surfacial water and nutrient uptake by twigs of Picea abies (L.) Karst.

Resume - Ram Oren

• Nina Buchmann, Ph.D., Department of Ecology, Universität Bayreuth. (Diplom 1990) Graduated 1993. Research Topic: N cycling in Picea abies (L.) Karst. Stands.

• Anke Berger, Ph.D., Department of Ecology, Universität Bayreuth. (Diplom 1990) Graduated 1995. Research Topic: Source-Sink effects on nutrient relations

• Philip Todd, M.S., School of the Environment, Duke University. Graduated 1995. Research Topic: Soil moisture extraction by willow oak, sweetgum, and loblolly pine in relation to their root system characteristics and transpiration rates.

• Wendy Weiher, M.S., School of the Environment, Duke University. Graduated 1995. Research Topic: Using Geographic Information System for merging Remotely-sensed Synthetic Aperture Radar data with ground-based information to assess the amount and distribution of functional groups in tropical and boreal ecosystems.

• Nathan Phillips, Ph.D. School of the Environment, Duke University. Graduated 1997. Research Topic: Transpiration, canopy conductance, and water status of temperate conifer and broadleaf trees and stands in relations to water in the soil and atmosphere.

• Peter Jipp, Ph.D., School of the Environment, Duke University. Graduated 1997. Research Topic: Transpiration, canopy conductance, and water status of tropical (Amazon) broadleaf trees and stands in relations to water in the soil and atmosphere.

• Diane Pataki, Ph.D., School of the Environment, Duke University (M.S. 1995) Graduated 1998. Research Topic: M.S. – Canopy stomatal conductance of three co-occurring species under varying atmospheric and soil moisture conditions. Ph.D. – Water use of co-occurring species in response to environmental conditions at varying temporal scales.

• Brent Ewers, Ph.D., School of the Environment, Duke University. (M.S. 1997) Graduated 2000. Research Topic: M.S. - Effect of anthropogenic manipulation and natural disturbance on water use of Pinus taeda trees and stand. Ph.D. – Effect of water and nutrient supply on mean canopy stomatal conductance of Pinus taeda and Picea abies.

• Karina VR Schäfer, Ph.D., School of the Environment, Duke University. Graduated 2002. Research Topic: Effects of increasing atmospheric CO2 concentrations on water and carbon relations of four co-occurring tree species.

• Heather McCarthy, Ph.D., School of the Environment, Duke University. Research Topic: Effects of elevated CO2 and nutrient supply on growth and water use in a loblolly pine forest.

• Hyun-Seok Kim, Ph.D., School of the Environment, Duke University. Research Topic: Effect of elevated atmospheric CO2 on biosphere-atmosphere interactions in a loblolly pine forest.

• Joshua Uebelherr, Ph.D., University program in Ecology & Nicholas School of the Environment & Earth Sciences, Duke University. Research Topic: Carbon and water cycling in old field and mature pine forest.

• A. Christopher Oishi, Ph.D., University program in Ecology & Nicholas School of the Environment & Earth Sciences, Duke University. Research Topic: Carbon and water cycling in mature hardwood forest.

• Eric Ward, Ph.D., University program in Ecology & Nicholas School of the Environment & Earth Sciences, Duke University. Research Topic: Effects of tree hydraulics on gas exchange.

• Mathieu Therezien, M.Sc., University program in Ecology & Nicholas School of the Environment & Earth Sciences, Duke University. Research Topic: Modeling of radiation and photosynthesis in pine species with different crown architecture.

OTHER CONTRIBUTIONS (Oren's students in bold): Posters • Ram Oren, Gabriel Katul, Jehn-Yih Juang, Paul Stoy (2007)Controls of Net Ecosystem Exchange

at an Old Field, Pine Plantation, & a Hardwood Forest Under Identical Climatic & Edaphic Conditions. U.S. North America Carbon Program (NACP) Investigator Meeting. Colorado Springs, Colorado, January 22-24, 2007

Resume - Ram Oren

• Ram Oren, Heather McCarthy, Sari Palmroth, Kurt Johnsen, Adrien Finzi (2007) The effects of elevated CO2 on carbon allocation in forests: New results from the Duke Forest FACE Experiment and synthesis of published data. U.S. North America Carbon Program (NACP) Investigator Meeting. Colorado Springs, Colorado, January 22-24, 2007

• Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, Novick KA, Oren R (2007) Surprising results from a long-term carbon flux monitoring program in the Duke Forest, NC, USA. Potsdam Institute for Climate Impact Research (PIK), Potsdam, Germany. Invited. (poster)

• Richard J Norby, Joanne Ledford, Evan H DeLucia, David J P Moore, Ram Oren, Heather R McCarthy, Birgit Gielen, Carlo Calfapietra, Christian P Giardina, John S King (2007) Forest FACE Synthesis Project: Net Primary Productivity. U.S. North America Carbon Program (NACP) Investigator Meeting. Colorado Springs, Colorado, January 22-24, 2007

• Hans Peter Schmid, Craig A. Wayson, Gabriel Katul, Ram Oren, Kim Novick, William M. Post, A. Faiz Rahman (2007) Matching Models to Measurements in the Up-Scaling of Carbon Exchange from Flux Sites to Regions. U.S. North America Carbon Program (NACP) Investigator Meeting. Colorado Springs, Colorado, January 22-24, 2007

• Seth G Pritchard, Allan E Strand, M Luke McCormack, Ram Oren (2007) Effects of Free-Air-CO2-Enrichment (FACE) on fine root production and soil fungi in a loblolly pine plantation over a six year period. U.S. North America Carbon Program (NACP) Investigator Meeting. Colorado Springs, Colorado, January 22-24, 2007

• Paul Stoy, Gabriel Katul, Mario Siqueira, Jehn-Yih Juang, Kim Novick, Ram Oren (2006) Bridging the gap between eddy covariance data and ecological theory: Simple explanations for long-term C flux observations the Duke Forest, NC, USA. CarboEurop

• Heather McCarthy, Sari Palmroth, Hyun-Seok Kim, Ram Oren (2005) Summer and winter precipitation: Effects on carbon sequestration and timber production under current and future atmospheric [CO2]. U.S. Climate Change Science Program (CCSP) Workshop, Arlington, Virginia, November 14-16, 2005

• Palmroth S, Butnor JR, MCCarthy HR, Ward EJ, Johnsen K, Katul GG, Oren R (2005) Combined effects of elevated CO2 and fertilization on carbon allocation and forest floor CO2 efflux in a loblolly pine plantation. Poster presented at the Tree Physiology Working Group Session entitled: The contributions of tree physiology to understanding the effects of climate change, IUFRO World Congress; Brisbane, Australia, August 2005. The International Forestry Review 7: 95.

• Siqueira M, Schlesinger W, Katul G, Oren R, Stoy P, Juang J-Y, Palmroth S (2003) Assessing Ecological Models of Varying Complexity for Predicting Carbon Sequestration in Managed Pine Plantations. Poster presentation, Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Meeting. Indianapolis, IN. October 2003

• Oren R, Katul G, Stoy P, Siqueira M, Juang J-Y, Palmroth S, Albertson J (2003) Controls of Net Ecosystem Exchange at an Old Field, a Pine Plantation, and a Hardwood Forest under Identical Climatic and Edaphic Conditions. Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Meeting. Indianapolis, IN. October 2003Oren R, Katul G, Stoy P, Siqueira M, Juang J-Y, Palmroth S, Albertson J (2003) Controls of Net Ecosystem Exchange at an Old Field, a Pine Plantation, and a Hardwood Forest under Identical Climatic and Edaphic Conditions. AmeriFlux Annual Meeting, Boulder CO, October 2003

• Schäfer KVR, Oren R, Oishi AC, Stoy P, Palmroth S, Ellsworth DS, Poulter B, Katul GG. Can we Constrain Carbon Assimilation and Allocation in a Multi-Species Forest using Water Flux Measurements? American Geophysical Union Fall meeting, San Francisco, December 2002

• Butnor J, Oren R, Johnsen K, Katul G. Increases in soil respiration in a CO2-enriched atmosphere can be diminished by fertilizer amendments. Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Meeting. Durham, NC. November 2001.

• Palmroth S, Butnor J, McCarthy H, Maier C, Stoy P, Katul G, Oren R. Forest floor CO2 flux – a preliminary comparison of instantaneous and monthly flux in a maturing pine plantation and a mature oak-hickory forest. Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Meeting. Durham, NC. November 2001.

• Chuang Y-L, Bertozzi A, Oren R, Katul G, Phillips N, Kim H-S. A porous media model for the hydraulic system of trees. Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Meeting. Durham, NC. November 2001.

Resume - Ram Oren

• Kim H-S, Schäfer KVR, Oren R. Intraspecific and Interspecific Responses of stomatal conductance sensitivity to vapor pressure deficit under ambient and elevated CO2. Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Meeting. Durham, NC. November 2001.

• Stoy P, Katul G, Oren R. Modeling the exchange of carbon and water from a loblolly pine forest for present and future climate scenarios. Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Meeting. Durham, NC. November 2001.

• Schäfer KVR, Oren R, Katul GG, Ellsworth DS, Lai C-T, Herrick JD. Estimating canopy net assimilation via sapflux-scaled conductance under ambient and elevated atmospheric CO2. Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Meeting. Durham, NC. November 2001.

• Ellsworth DS, Katul GG, Schlesinger WH, Oren R. Stand CO2 fluxes and canopy structure in the Duke pine forest after 5 years of elevated atmospheric CO2. DOE- Free-Air CO2 Enrichment site review. Rhinelander, WI. July 2001.

• Butnor JR, Oren R, Johnsen KH, Katul GG (2001) Increase in soil respiration in a CO2-enriched atmosphere can be diminished by fertilizer amendments. In Linking the Complexity of Forest Canopies to Ecosystem and Landscape Function. A workshop of The International Union of Forest Research Organizations (IUFRO) Canopy Process Working Group, Oregon, July 2001

• Schäfer KVR, Oren R, Lai C-T, Katul GG (2000) Canopy water use under ambient and elevated atmospheric CO2 concentrations. In Atmospheric, Surface, and Subsurface Hydrology and Interactions, American Institute of Hydrology Annual Meeting, Research Triangle Park, North Carolina, November 2000

• Schäfer KVR, Oren R, Katul GG, Ellsworth DS (1999) Estimating net canopy net assimilation via sap-flux scaled conductance. The GCTE meeting, Reading, UK, September 1999

• Ewers BE, Oren R (1998) Effect of increased water and nutrient supply on water use of loblolly pine during drought. Presentation in the 83rd Annual meeting of the Ecological Society of America, Albuquerque, August 1997 (Abstract page 56)

• Pataki DE, Oren R, Katul G, Sigmon J (1996) Canopy stomatal conductance of three co-occurring species under varying atmospheric and soil moisture conditions. Poster Session: Plant Physiological Ecology - Water Relations. Ecological Society of America Annual Meeting, Providence, Rhode Island, August 1996

• Zimmermann R, Oren R, Freeman A, Kramer C, Chapman B (1994) Remote sensing of tropical forests with multi-frequency polarimetric radar (AIRSAR) as an aid in vegetation classification. Poster presentation at the German Botanical Congress, Bayreuth, Germany, September 11-19, 1994. Abstract in Botanikertagung 1994, P 22.05, p. 378

• Zimmermann R, Oren R, Billings S, Müller-Ezards C, Schaaff C, Strohmeier P, Obermaier E (1994) Diurnal and seasonal trends in canopy transpiration and conductance in pristine forest types in Belize, Central America. Poster presentation at the German Botanical Congress, Bayreuth, Germany, September 11-19, 1994. Abstract in Botanikertagung 1994, P 22.05, p. 379

• Zimmermann R, Oren R, Terborgh J (1994) Water relations of two Neotropical rainforest types in lowlands of the Amazon Basin at Rio Manú, Perú. Poster presentation at the German Botanical Congress, Bayreuth, Germany, September 11-19, 1994. Abstract in Botanikertagung 1994, P 22.05, p. 379

• Zimmermann R, Oren R, Freeman A, Strohmeier P, Schaaf C, Mueller-Ezards C, Obermaier E, Zebker H, Vane G (1993) Approaches to vegetation mapping of a neotropical rainforest in Belize, Central America, with remote sensing (Multi-Frequency Polarimetric Radar/AIRSAR, TIMS and AVIRIS). Poster presentation at the 6 Annual Meeting of the German Society of Tropical Ecology, Berlin, Federal Republic of Germany. February 1993

• Zimmermann R, Oren R, Mueller-Ezards C, Schaaf C, Strohmeier P, Obermaier E, Klien S, Stumpf B, Granier A (1993) Diurnal and seasonal changes of tree transpiration in a semideciduous neotropical rainforest in Belize, Central America. Poster presentation at the 6 Annual Meeting of the German Society of Tropical Ecology, Berlin, Federal Republic of Germany. February 1993

• Oren R, Zimmermann R, Terborgh J (1993) Tree transpiration and canopy conductance of a neotropical rainforest in upper Amazon basin (Rio Manu), Peru. Poster presentation at the 6 Annual Meeting of the German Society of Tropical Ecology, Berlin, Federal Republic of Germany. February 1993

Resume - Ram Oren

• Oren R, Zimmermann R, Freeman A, Villasenor J (1993) Forest canopy, water status and vegetation structure in Tapajos National Forest, Brazil for supervised classification of microwave backscatter. The Forth Annual JPL Airborne Geoscience Workshop (AIRSAR, AVIRIS, TIMS). June 1993.

Presentations by Collaborators • Norby R, Iversen CM, Finzi AC, DeLucia EH, Ceulemans R, Oren R. Nitrogen uptake and net

primary productivity in forest FACE experiments. Keynote Speaker, Third EcoFizz Conference: The Impacts of Global Change on Plants and Ecosystems. Hawkesbury Campus, University of Western Sydney, Richmond, NSW, Australia 27-28 September, 2007

• Novick, K.A., G.G. Katul, R. Oren, J. Juang, M.B.S. Siqueira & P.C. Stoy. 2006. Ecosystem functional convergence models of carbon and water cycling for use in bottom-up scaling strategies. American Geophysical Union Fall Meeting, San Francisco, CA, USA.

• Novick, K.A., G.G. Katul, R. Oren, J. Juang, M.B.S. Siqueira & P.C. Stoy. 2006. Interspecific variation in canopy conductance with tree height. Ecological Society of America meeting, Memphis, TN, USA.

• Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, Novick KA, Oren R (2006) Bridging the gap between eddy covariance data and ecological theory: Simple explanations for lont-term C flux observations in the Duke Forest, NC, USA. CarboEurope Open Science eConference on the GHG Cycle in the Northern Hemisphere, Sissi-Lassithi, Crete.

• Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, Novick KA, Oren R (2006) Carbon exchange along an ecological succession. University of Edinburgh Global Change Seminar. Invited.

• Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, Novick KA, Oren R (2006) Explaining the interannual variability of carbon exchange in successional ecosystems. 91st ESA Annual Meeting, Memphis, TN. Honorable Mention, Billings Award (Best Student Presentation in the Physiological Ecology Secton)

• Johnsen KH, Oren R, Maier C, McCarthy H, Palmroth S, Butnor J (2006) Rising atmospheric CO2 and Carbon sequestration in Southern forests. Critical Processes and Properties Regulating Carbon Cycling in Southern Forests. USDA Forest Service. Asheville, NC, May 31- June 2, 2006

• Stoy PC, Katul GG, Siqueira MBS, Juang J-Y, Novick KA, Oren R (2006) Ecosystem response to climate determines long-term CO2 and H2O exchange at Duke Forest. Harvard University, Department of Atmospheric Sciences. Invited.

• Katul GG, Oren R (2005) Reducing uncertainty in NEE estimates from flux measurements: Ameriflux Meeting, October 20, 2005, Boulder Colorado, U.S.A.

• Kim H-S , Palmroth S, Therezien M, McCarthy HR, Parashkevov Y, Oren R (2005) Light distribution in a mixed species canopy based on constant versus variable clumping factor and leaf angle distribution. Abstracts of the Ecological Society of America 89th Annual MeetingDaly E, Porporato A, Oren R, Katul GG, (2005) Quantifying the combined effects of elevated atmospheric CO2 and nutrient amendments on subsurface CO2 production in a southern loblolly pine plantation using inverse methods. American Geophysical Union 5–9 December 2005, San Francisco, California, USA.

• Juang J-Y, Porporato A, Stoy P, Siqueira M, Kim H-S, Oishi C, Uebelherr J, Katul GG (2005) The effect of land cover change on the convective precipitation during the growing season in the Southeastern United States. American Geophysical Union 5–9 December 2005, San Francisco, California, USA.

• Stoy P, Katul GG, Siqueira MB, Juang J-Y, Novick K, Oren R (2005) Vegetative controls on coupled ecosystem water and carbon fluxes on hourly to successional temporal scales. American Geophysical Union 5–9 December 2005, San Francisco, California, USA.

• Siqueira MB, Katul GG, Sampson A, Stoy P, Juang J-Y, McCarthy H, Oren R (2005) Multi-scale Model Inter-comparisons of CO2 and H2O Exchange Rates in a Maturing Southeastern U.S. Pine Forest, American Geophysical Union 5–9 December 2005, San Francisco, California, USA.

• Schmid HP, Katul GG, Oren R, Post W, Faiz R (2005) Scaling up of carbon exchange dynamics from AmeriFlux sites to a supper-region in eastern North America. iLEAPS

• Katul GG, Oren R (2005) Bringing Photosynthesis to the Atmosphere: a feedback on terrestrial water cycling. Working Group on Water and the Environment, The Pontifical Academy of Sciences, Rome, November, 2005

Resume - Ram Oren

• Katul GG, Siqueira M, Stoy P, Juang, J-Y, Palmroth, S, Daly E, Poggi D, Porporato A, and Oren R (2005) Multiscale models of biosphere-atmosphere exchange rates of H2O and CO2: Crossing the seconds to years and leaf to canopy scale barriers. 3rd CNR-PRINCETON workshop, May 2005

• Stoy PC, Katul GG, Juang J, Siqueira MBS, Oishi AC, Uebelherr JM, Oren R (2005) Disentangling ecosystem responses to external and intrinsic drivers on multiple time scales. Abstracts of the Ecological Society of America 89th Annual Meeting

• Wielopolski L, Mitra S, Johnsen K, Sanchez F, Ma JY, Hendrey G, Oren R (2005) In dield soil carbon determination using a noninvasive INS method in comparison with conventional soil cores and excavations. Fourth Annual Conference on Carbon Capture & Sequestration. Alexandria, Virginia May 2005

• Song C, Band LE, Tague CL, Randolph A, Oren R, Katul G (2005) Modeling water, energy and carbon exchange in a loblolly pine Forest in southeast USA: Understanding the impact of canopy structure. AAG (Association of American Geographers) Annual Meeting, Denver, Colorado, April 2005

• Stoy PC, Katul GG, Siqueira MBS, Juang J, Palmroth S, Kim H-S, McCarthy H, Oishi AC, Uebelherr JM, Oren R (2005) The carbon and water cycles in SE piedmont ecosystems: Insights from 17 site-years of eddy covariance data. 2005 Southeastern Evolution and Ecology Conference, Athens, GA, March 2005

• Katul G, Lai C-T, Oren R, Cava D, Siqueira M (2004) Modeling nighttime ecosystem respiration from inverse models of canopy turbulence. AmeriFlux Annual Meeting, Boulder CO, October 2004

• Katul G, Oren R (2004) Bringing photosynthesis to the atmosphere: A feedback on terrestrial water cycle. Earth, Fire, Water, Air and Life – Changing Earth and its Impact on Human Habitat. Deutsche Forschungsgemeinschaft (German Science Foundation). Washington, D.C., April 2004.

• Katul G, Poggi D, Finnigan J, Oren R (2004) Remote Sensing Applications of Vegetation Density Hydrologic Remote Sensing Validation workshop, CUAHSI, Iowa City, Iowa, June 29-30, 2004

• Katul G, Williams CG, Sequeira M, Poggy D, Porporato A, Oren R (2004) Spatial modeling of transgenic conifer pollen. Landscapes, Genomics & Transgenic Conifer Forests. Ecosystem Interface with Biotechnology Products. A Nicholas Environmental Leadership Forum, Nicholas School of Environmental & Earth Sciences, Duke University, Durham, NC, November, 2004

• Katul GG, Oren R (2004) Coupled Carbon-Water Dynamics and the hydro-meteorological feedback. Workshop on Agro-hydrology. Capri, Italy, May 2004

• McCarthy H, Oren R, Johnsen KH, Kim H-S (2004) Ice storm impacts on carbon cycling in pine forests under elevated CO2, nutrients and thinning. In Disturbance Ecology I: Scaling, Wind, and Ice. Abstracts of the Ecological Society of America 89th Annual Meeting. Portland, Oregon, August 2004.

• Siqueira M, Katul GG, Stoy P, Juang J-Y, Oren R (2004) Nesting High-resolution Multi-layer Photosynthesis Approaches in Current Forest Productivity Models: A Cost-Benefit Analysis in the Time-Frequency Domain, American Geophysical Union Meeting, San Francisco, Dec. 2004

• Song C, Band L, Randolf A, Oren R, Katul GG (2004) Impacts of Canopy Structure on Water, Energy and Carbon Exchange in a Loblolly Pine Forest in Southeast USA, American Geophysical Union Meeting, San Francisco, Dec. 2004

• Stoy P, Katul GG, Juang J-Y, Siqueira M, Palmroth S, Kim H, McCarthy H, Oishi C, Uebelherr JM, Oren R (2004) The Interplay Between the Carbon and Water Cycles Along a Successional Gradient in the Southeastern US, American Geophysical Union Meeting, San Francisco, Dec. 2004

• Stoy PC, Katul GG, Siqueira M, Juang J, Kim H-S, McCarthy H, Oishi AC, Poulter B, Oren, R (2004). Modelling net ecosystem exchange at multiple time scales in a pine and a hardwood forest. International Conference on Modeling Forest Production, Vienna, Austria, April 2004.

• Katul GG, Suwa M, Andrews J, Oren R, Leuning R, Ellsworth D, Pippen J, Mace A, Schlesinger W (2003) Inferring the effects of elevated atmospheric CO2 on subsurface CO2 production and respiration. Principle Investigators Meeting for the Free Air CO2 Enrichment Project, Duke University, Durham, NC, September 2003

• Kiely G, Albertson J, Katul G, Oren R, Scanlon T (2003) A comparison of CO2 fluxes for one year at three Irish sites: Two grassland pastures and one blanket peatland. European Geophysical Society, Nice, France, April 2003

• Katul GG, Oren R, Stoy P, Siqueira M, McCarthy H, Juang J (2003) Ecosystem water and carbon states: A dynamical systems view. American Geophysical Union Fall Meeting, San Francisco December 2003

Resume - Ram Oren

• Mortazavi B, Chanton J, Prater J, Oishi C, Oren R, Katul GG (2003) Temporal variability in 13C of respired CO2 in a pine and a hardwood forest subject to similar climatic conditions, American Geophysical Union Fall Meeting, San Francisco, December 2003

• Katul G, Poggi D, Finnigan J, Cava D, Oren R (2003) Complex terrain the the spatial variability in fluxes of H2O and CO2. In “New Frontiers in Hydrology", the 2nd CNR-Princeton Workshop Capri, Italy, October 2003

• McCarthy H, Millar, B, Oren R (2003) Drought sensitivity of growth in a pine forest under CO2 enrichment and differing nutrient supplies. Abstracts of Ecological Society of America 88th Annual Meeting. Savannah, Georgia, August 2003

• Stoy P, Katul GG, Oren R, Siqueira M, Juang J-Y (2003) Carbon dioxide and water vapor exchange in three adjacent ecosystems for two drought-impacted years. Ecological Society of America Annual Meeting, Savannah, Georgia, August 2003

• Johnsen K, Teskey RO, Kress L, Maier CA, Butnor JR, Sampson DA, Samuelson LJ, Oren R (2002) Impacts of pine plantation forestry on carbon sequestration in the Southern United States. USDA Symposium on Natural Resource Management to Offset Greenhouse Gas Emissions, Raleigh, North Carolina, November 19-21 2002

• Katul G, Oren R, Lai C-T, Siqueira M, Johnsen K, Butnor J, Maier C, Palmroth S, Schlesinger W (2002) Assessing Ecological Models of Varying Complexity for Predicting Carbon Sequestration in Managed Pine Plantations. Southeast Regional Center Annual National Institute for Global Environmental Change Symposium, Kennedy Space Center, Florida, November 5-6, 2002

• Palmroth S, Butnor J, McCarthy H, Maier C, Stoy P, Katul G, Oren R (2002) Forest floor CO2 efflux - a comparison of instantaneous and seasonal flux between a pine and an oak-hickory forest. Forest Carbon Dynamics: Soils and litter. The Ecological Society of America 87th Annual Meeting, Tucson, Arizona, August 2002

• McCarthy HR, Palmroth S, Oren R, Schafer KVR (2002) Effects of elevated CO2 and nutrient supplies on carbon allocation in a pine forest. Oral Session: Elevated CO2. The Ecological Society of America 87th Annual Meeting, Tucson, Arizona, August 2002

• Johnsen J, Oren R, Kress L (2002) Impact of CO2 and Fertilization on Soil carbon and Root Biomass. 2002 Air Pollution Workshop – Carbon Issues (CO2/FACE). Pennsylvania State University, University Park, P. April 18, 2002

• Stoy P, Katul GG, Oren R (2002) Comparing Multilayer and Single Layer Canopy Photosynthesis Models with Measured Data at Multiple Time Scales. American Geophysical Union Spring Meeting, Washington DC, May, 2002

• Schäfer KVR, Oren R, Katul GG (2002) Differences in Carbon Assimilation and Allocation between Pine Forests Growing under Ambient and Enriched-CO2 Atmosphere. American Geophysical Union Spring Meeting, Washington DC, May, 2002

• Chuang Y, Bertozzi A, Oren R, Katul GG (2001) A Porous Media Model for the Hydraulic System of Trees. American Physical Society Annual Meeting of the Division of Fluid Dynamics, San Diego, California, November 2001

• Johnsen KH, Butnor JR, Maier C, Oren R, Pangle R, Samuelson L, Seiler J, McKeand SE, Allen HL (2001) Fertilization increases below-ground carbon sequestration of loblolly pine plantations. National conference on Carbon sequestration. Washington DC, May 2001

• Katul G, Albertson J, Vidakovic B, Oren R (2001) Signal Processing Techniques for Analyzing Long-term Flux Measurements. DOE AmeriFlux Annual Meeting, Argonne National Laboratory, Argonne, IL, November, 2001

• Katul G, Lai C-T, Johnsen K, Maier C, Butnor J, Oren R (2001) The Effects of Nitrogen Fertilization on Biosphere-Atmosphere Water and Carbon Fluxes. DOE AmeriFlux Annual Meeting, Argonne National Laboratory, Argonne, IL, November, 2001

• Katul G, Oren R, Ellsworth D (2001) Measurements and Modeling of Net Carbon Exchange over a Southeastern Loblolly Pine Plantation at the Duke Forest AmeriFlux Site. DOE AmeriFlux Annual Meeting, Argonne National Laboratory, Argonne, IL, November, 2001

• Katul GG, Lai C, Butnor J, Johnsen K, Ellsworth D, Oren R (2001) Modeling the Effects of Fertilization on Net Ecosystem Exchange of Carbon, Water, and Energy. American Geophysical Union Fall Meeting, San Francisco, December, 2001

• Katul GG, Lai C-T, Siqueira M, Johnsen K, Oren R (2001) The Effects of Nitrogen Fertilization on Biosphere-Atmosphere Water and Carbon Fluxes, American Geophysical Union, Boston, MA, June 1997

Resume - Ram Oren

• Kim H-S, Oren R, Hinckley TM (2001) Transpiration of Hybrid Poplar: stomatal conductance sensitivity to vapor pressure deficit from leaf to tree. Ecological Society of America 86th Annual Meeting, Water relation section, Madison, WI, August 2001. Abstract 130p

• Schäfer KVR, Oren R, Katul GG, Naumburg NS, LAI C-T, Ellsworth DS (2001) Estimating canopy CO2 uptake under elevated and ambient atmospheric CO2 concentrations with scaled sap flux and del 13C. Ecological Society of America 86th Annual Meeting, Water relation section, Madison, WI, August 2001. Abstracts p 198-199.

• Katul GG, Lai C-T, Schäfer KVR, Oren R, Albertson J, Vidakovic B, Hsieh C-I (2000) Quantifying the Complexity in Mapping Energy Inputs and Hydrologic State Variables into Land-Surface Fluxes, American Geophysical Union, San Francisco, CA

• Sperry JS, Oren R, Comstock JP (2000) Hydraulic architecture and stomatal action. In The Water Limitation: Issues in Plant, Community, and Ecosystem Water Use. Abstracts of Ecological Society of American 85th Annual Meeting. Snowbird, Utah, August 2000

• Schäfer KVR, Oren R, Lai C-T, Katul GG, (2000) Water use and stomatal conductance of Pinus taeda and Liquidambar styraciflua under ambient and elevated CO2. In Water relations in Trees. Abstracts of Ecological Society of America 85th Annual Meeting. Snowbird, Utah, August 2000

• Katul GG, Oren R, Kasibhatla P, Ellsworth D, Lai CT, Schäfer K, Ewers B, Naumberg E (1999) Reassessment of Carbon Sequestration in Forests of the Conterminous United States, American Geophysical Union, San Francisco, CA, December 1999

• Katul GG, Lai CT, Ellsworth D, Oren R (1999) Modeling Vegetation-Atmosphere CO2 Exchange by a Coupled Eulerian-Lagrangian Approach, American Geophysical Union, San Francisco, CA, December 1999

• Oren R, Ellsworth D, Katul GG (1999) Past, Present, and Future Research Directions in the FACE Prototype Ring, Workshop on FACE Research, Sponsored by the Department of Energy, Washington DC, June 1999

• Katul GG, Oren R, Ellsworth D, Hendrey G (1999) Prototyping the integration of FACE and AmeriFlux, Workshop on FACE Research, Sponsored by the Department of Energy, Washington DC, June 1999

• Katul GG, Lai CT, Ellsworth D, Oren R (1999) Modeling Vegetation-Atmosphere CO2 Exchange by a coupled Eulerian-Lagrangian Approach, Department of Energy, Joint Science Team, Indianapolis, July 1999

• Katul GG, Oren R, Lai CT, Schäfer K, and Ellsworth D (1999) Drought Effects on Net Ecosystem Exchange at the Duke Forest AmeriFlux Site, Department of Energy Annual Meeting, Denver Co. September 1999

• Ewers BE, Oren R (1999) Responses of sap flux-scaled canopy stomatal conductance to light and vapor pressure deficit in Taxodium distichum. Abstracts of Ecological Society of American 84th Annual Meeting. Spokane, Washington, August 1999

• Schäfer KVR, Oren R, Tenhunen JD (1999) The effect of height on mean canopy stomatal conductance in Fagus Sylvatica L. Trees. Abstracts of Ecological Society of American 84th Annual Meeting. Spokane, Washington, August 1999

• Katul GG, R Oren (1998) Inferring scalar sources, sinks and fluxes within a uniform pine forest with higher-order turbulent closure models, In Evapotranspiration: Theory, Determination and Modeling. An annual workshop on Physics Applied to Agriculture, Agrophysics’98, sponsored by the Cuban Society of Physics. Havana, Cuba, November, 1998

• Ewers BE, Oren R, Dougherty P, Albaugh T (1997) Effects of water and nutrient supply on water use in loblolly pine: Scaling point measurements in stems to canopy conductance. Oral Session: Advances in Canopy Science. Ecological Society of America Annual Meeting, Albuquerque, New Mexico, August 1997

• Pataki DE, Oren R (1997) Transpiration of ring- and diffuse-porous species in a southeastern deciduous forest. Oral Session: Plant Physiological Ecology: Water Relations. Ecological Society of America Annual Meeting, Albuquerque, New Mexico, August 1997

• Phillips NG, Oren R (1997) a comparison of daily representation of canopy conductance based on two time-averaging methods. Poster Session: Plant Physiological Ecology - Light and Water Relations. Ecological Society of America Annual Meeting, Albuquerque, New Mexico, August 1997

Resume - Ram Oren

• Phillips NG, Oren R (1997) a comparison of daily representation of canopy conductance based on two time-averaging methods. American Geophysical Union Spring Meeting, Baltimore, Maryland, June 1997

• Phillips NG, Oren R (1996) Effect of Elevated CO2 on loblolly pine forest water use. Oral Session: Plant Physiological Ecology - Water and Carbon Relations. Ecological Society of America Annual Meeting, Providence, Rhode Island, August 1996

• Kern RA, Zimmermann R, Oren R (1996) Canopy transpiration in a Giant Sequoia-Mixed Conifer Forest, Sequoia National Park, California, USA. Oral Session: Plant Physiological Ecology - Water and Carbon Relations. Ecological Society of America Annual Meeting, Providence, Rhode Island, August 1996

• Phillips N, Oren R (1995) Scaling radial sap flow measurements in loblolly pine to the stand level. American Geophysical Union Spring Meeting, Baltimore, Maryland, June 1995

• Phillips N, Oren R (1995) Radial trends in xylem sap flux density in loblolly pine, sweetgum and white oak. Ecological Society of America Annual Meeting. Snowbird, Utah, August 1995

• Rignot E, Zimmermann R, Oren R (1995) On the potential of long wavelength imaging radar for mapping vegetation types and woody biomass in tropical rain forests. Fifth Annual JPL Airborne Earth Science Workshop, January 23-26, 1995: AIRSAR Workshop. JPL Publication 95-1 Vol 3:39-41. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California

• Zimmermann R, McDonald KC, Way J, Oren R (1994) Microclimate, water potential, transpiration, and bole dielectric constant of conifers and deciduous tree species in the continental boreal ecotone in Central Alaska. International Geoscience and Remote Sensing Symposium (IGARSS), Pasadena CA, August 8-12, 1994. Publ. # 940553

• Way J, Rignot EJM, McDonald KC, Oren R, Kwok R, Bonan G, Dobson MC, Viereck LA, Roth JE (1994) Evaluating the type and state of Alaska taiga forests with imaging radar for use in ecosystem models. IEEE Geoscience and Remote Sensing Society 1994 Transactions Prize Paper Award

• McDonald KC, Zimmermann R, Oren R, Way JB (1993) Hydrologic and dielectric properties of woody plant tissue: Implications for remote sensing of canopy water status. IGARSS 1993, Vol VI: 2062. Tokyo, Japan - Winner of the IEEE Geoscience and Remote Sensing Society 1993 Interactive Session Prize Paper Award

• McDonald KC, Zimmermann R, Oren R, Way JB (1993) Hydrologic and dielectric properties of woody plant tissue: Implications for remote sensing of canopy water status. 78 Annual Meeting of the Ecological Society of America. Bull Ecol Soc Am Sup Vol 74 (2): 352

• Buchmann N, Gebauer D, Oren R, Schulze E-D (1992) 15N application to a Norway spruce ecosystem in the Fichtelgebirge, NE-Bavaria, FRG - pathways and dynamics. CEC Symposium on the Experimental Manipulation of Biota and Biogeochemical Cycling in Ecosystems - Approach, Methodologies, Findings, Copenhagen, Denmark. May 18-20, 1992

• McDonald KC, Zimmermann R, Way JB, Oren R (1992) An investigation of the relationship between tree water potential and dielectric constant. International Geoscience and Remote Sensing Symposium. Houston TX, May 26-29, 1992. pp 523-525

• Durden S, Freeman A, Klein J, Vane G, Zebker H, Zimmermann R, Oren R (1991) Polarimetric radar measurements of tropical rainforest. Proceedings of The Third Annual JPL Airborne Geoscience Workshop (AIRSAR, AVIRIS, TIMS), JPL Publication 91-30:223-233

• Schoeneberger MM, Schoeneberger PJ, Oren R (1991). Are soil and vegetation data on a hectare scale remotely sensible? [Abstract] American Society of Agronomy, Denver, CO. Oct. 27-Nov. 1, 1991,

• Schulze E-D, Lange OL, Oren R (1990) The effect of acid rain on two Picea abies stands at different stages of decline: The Fichtelgebirge study. FBW-Kongres, Regionale Schwerpunkte: Fichtelgebirge. Friedrichshafen, Federal Republic of Germany. Oct. 2-6, 1989, p. 288

• Buchmann B, Oren R (1989) Effects of nitrogen-, magnesium and glucose-supply on young spruce seedlings - a field study in the Fichtelgebirge. International Congress on Forest Decline Research: State of Knowledge and Perspectives. FBW-Kongres, Regionale Schwerpunkte: Fichtelgebirge. Friedrichshafen, Federal Republic of Germany. Oct. 2-6, 1989, p. 619

• Schulze E-D, Oren R (1989) Carbon, water, and nutrient relations of Picea abies at different stages of decline in the Fichtelgebirge. International Congress on Forest Decline Research: State

Resume - Ram Oren

of Knowledge and Perspectives. FBW-Kongres, Regionale Schwerpunkte: Fichtelgebirge. Friedrichshafen, Federal Republic of Germany. Oct. 2-6, p. 619

• Berger A, Osonubi O, Oren R, Schulze E-D (1988) Concentration of MG, Ca, K and N in the xylem sap of spruce (Picea abies (L.) K.). International Congress on Forest Decline Research: State of Knowledge and Perspectives. FBW-Kongres, Regionale Schwerpunkte: Fichtelgebirge, Friedrichshafen, Federal Republic of Germany. p. 294.

• Berger A, Oren R, Schulze E-D (1988) Transport of nutrients in the xylem of spruce (Picea abies L. Karst.) under controlled conditions. Joint Meeting on Mechanisms and Regulation of Transport Process of the British Plant Growth Regulator Group and the Society of Chemical Industry Society: Joint BP6RG/SCI. London

• Zimmermann R, Schulze E-D, Oren R, Werk KS (1987) Photosynthesis and transpiration of green trees of Picea abies (L.) Karst: A comparison of two sites with different sulfate and proton input in Northern Bavaria, FRG. Proceedings of the 1986 COST-Workshop, Goetesborg, Sweden on "Direct effects of air pollution of forest trees." Commission of European Communities

Reports & Proceedings • Oren R, Norby R (2007) The Hawkesbury Forest Experiment: Impacts of precipitation, soil fertility

and CO2 on trees. Report of the Intenational Advisory Team to the Australian Greenhouse Office, Department of the Environment & Heritage, Australian Government

• Oren R (2007) Annual Report on the FACE-FACTS I Project. Office of Biological and Environmental Research, Office of Science, Department of Energy, Germantown, Maryland


• Oren R, Katul GG, Palmroth S (2006) Controls of net ecosystem exchange at an Old Field, Pine Plantation, & a hardwood forest under identical climatic & edaphic conditions. Annual Report provided to the Terrestrial Carbon Processes Program, Office of Biological and Environmental Research, Office of Science, Department of Energy, Germantown, Maryland

• Oren R (2006) Reducing uncertainty in current and projected carbon sequestration in southeastern US – Phase V. Annual Report provided to the Southern Forest Research Station, USDA, Forest Service - Asheville, North Carolina, and the Southern Global Change Program, Raleigh, North Carolina

• Oren R, Katul GG, Palmroth S (2006) Measurements and modeling of net carbon exchange over a southeastern loblolly pine plantation at the Duke Forest AmeriFlux site. Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC) Annual Report. Tuscaloosa, Alabama.



• Oren R (2005) Reducing uncertainty in current and projected carbon sequestration in southeastern US – Phase V. Annual Report provided to the Southern Forest Research Station, USDA, Forest Service - Asheville, North Carolina, and the Southern Global Change Program, Raleigh, North Carolina


• Katul GG, Oren R, Schlesinger WH (2005) Assessing ecological models of varying complexity for predicting carbon sequestration in managed pine plantations. Final Report provided to Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC), Tuscaloosa, Alabama.

• Denning S, Oren R, McGuire D, and 34 et al. (2004) Science Implementation Strategy for the North America Carbon Cycle. A subcommittee of the Carbon Cycle Science Steering Group and the Interagency Working Group on Carbon

Resume - Ram Oren



• Oren R (2004) Reducing uncertainty in current and projected carbon sequestration in southeastern US – Phase IV. Annual Report provided to the Southern Forest Research Station, USDA, Forest Service - Asheville, North Carolina, and the Southern Global Change Program, Raleigh, North Carolina


• Katul GG, Oren R, Schlesinger WH (2004) Assessing ecological models of varying complexity for predicting carbon sequestration in managed pine plantations. Annual Report provided to Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC), Tuscaloosa, Alabama.

• Stoy PC, Katul GG, Siqueira MBS , Juang J, McCarthy HR, Kim HS, Oishi AC, Oren R (2004) Modeling net ecosystem exchange at multiple time scales in a pine and a hardwood forest. in H. H. and A. Mäkelä, editors. International conference on modeling forest production. BOKU University of Natural Resources and Applied Life Sciences, Vienna. 517 pages.

• Oren R (2003) Site measurements and model validation. Session on CO2 Measurement & Carbon Cycle/Sequestration Modeling, Terrestrial Carbon Processes (TCP-BER-Office of Science-DOE) – Contribution to a report for Office of Biological and Environmental Research, Office of Science, Department of Energy, Germantown, Maryland

• Oren R (2003) Carbon source-sink interactions as affected by water, nutrients, and atmospheric CO2. Session on Carbon Cycle & Carbon Sequestration, Terrestrial Carbon Processes (TCP-BER-Office of Science-DOE) – Contribution to a report for Office of Biological and Environmental Research, Office of Science, Department of Energy, Germantown, Maryland

• Oren (2003) Site Review of the Duke Forest Face Site – Contribution to the declaration of DOE FACE sites as a Distributed User Facility. Office of Biological and Environmental Research, Office of Science, Department of Energy, Germantown, Maryland



• Oren R (2003) Reducing uncertainty in current and projected carbon sequestration in southeastern US – Phase IV. Annual Report provided to the Southern Forest Research Station, USDA, Forest Service - Asheville, North Carolina, and the Southern Global Change Program, Raleigh, North Carolina


• Katul GG, Oren R, Schlesinger WH (2003) Assessing ecological models of varying complexity for predicting carbon sequestration in managed pine plantations. Annual Report provided to Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC), Tuscaloosa, Alabama.

• Katul GG, Oren R (2003) Anthropogenic perturbations and the coupled water-carbon cycles in forested ecosystems, in New Frontiers in Hydrology, Proceedings of the 1st CNR-Princetopn Workshop held at Princeton University, U.S.A.

• Oren (2002) Site Review of the Duke Forest Face Site (with two responses). Office of Biological and Environmental Research, Office of Science, Department of Energy, Germantown, Maryland

Resume - Ram Oren


• Oren R, Katul GG (2002) Controls of net ecosystem exchange at an Old Field, Pine Plantation, & a hardwood forest under identical climatic & edaphic conditions. Annual Report provided to the Terrestrial Carbon Processes Program, Office of Biological and Environmental Research, Office of Science, Department of Energy, Germantown, Maryland

• Oren R (2002) Reducing uncertainty in current and projected carbon sequestration in southeastern US – Phase III. Annual Report provided to the Southern Forest Research Station, USDA, Forest Service - Asheville, North Carolina, and the Southern Global Change Program, Raleigh, North Carolina

• Oren R (2002) Reducing uncertainty in current and projected carbon sequestration in southeastern US – Phase II. Final Report provided to the Southern Forest Research Station, USDA, Forest Service - Asheville, North Carolina, and the Southern Global Change Program, Raleigh, North Carolina


• Katul GG, Oren R (2002) Assessing ecological models of varying complexity for predicting carbon sequestration in managed pine plantations. Annual Report provided to Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC), Tuscaloosa, Alabama.

• Katul GG, Oren R (2001) Assessing ecological models of varying complexity for predicting carbon sequestration in managed pine plantations. Annual Report provided to Southeast Regional Center of the National Institute for Global Environmental Change (SERC-NIGEC), Tuscaloosa, Alabama.

• Oren R, Katul GG (2001) Controls of net ecosystem exchange at an Old Field, Pine Plantation, & a hardwood forest under identical climatic & edaphic conditions. Annual Report provided to the Terrestrial Carbon Processes Program, Office of Biological and Environmental Research, Office of Science, Department of Energy, Germantown, Maryland

• Schlesinger WH, Oren R (2001) Annual Report on the Forest-Atmosphere carbon Transfer and Storage experiment (FACE FACTS-I), to the DOE.

• Oren R, Katul GG (2001) Measurements and modeling of net carbon exchange over a southeastern loblolly pine plantation at the Duke Forest AmeriFlux site. Southeast Regional Center Annual Meeting (and Report), National Institute for Global Environmental Change Symposium, Tuscaloosa, Alabama, March 2001

• Oren R, Katul GG, DS Ellsworth, KH. Johnsen (2001) Reducing uncertainty in current and projected carbon sequestration in southeastern US. Annual Report provided to NCASI - Raleigh, North Carolina

• Oren R (2001) Reducing uncertainty in current and projected carbon sequestration in southeastern US – Phase II. Annual Report provided to the Southern Forest Research Station, USDA, Forest Service - Asheville, North Carolina, and the Southern Global Change Program, Raleigh, North Carolina

• Oren R (2000) Reducing uncertainty in current and projected carbon sequestration in southeastern US – Phase II. Annual Report provided to the Southern Forest Research Station, USDA, Forest Service - Asheville, North Carolina, and the Southern Global Change Program, Raleigh, North Carolina

• Oren R, Ellsworth DS, Johnsen KH, Phillips N, Ewers BE, Maier C, Schäfer KVR, Hendrey G, McNulty SG, Katul GG (2000) Responses of a Loblolly Pine Plantation to Elevated Supplies of CO2 and Nutrients. Final Report to The Southern Global Climate Change Program, US Forest Service, Raleigh, North Carolina

• Oren R, Katul GG, Ellsworth DS, Phillips N, Hsieh C-I, Lai C-T, Schäfer KVS, Ewers BE, Kasibhatla P (2000) Estimate of annual carbon fluxes in forests of the conterminous U.S. Final Report (#71) to The Southeast Regional Center, National Institute for Global Environmental Change, Tuscaloosa, Alabama

• Katul GG, Oren R (2000) Spatial variability of turbulent fluxes in the canopy sublayer of a uniform pine stand. Final Report (#72) to The Southeast Regional Center, National Institute for Global Environmental Change, Tuscaloosa, Alabama

Resume - Ram Oren

• Oren R, Katul GG (2000) Carbon fluxes in a managed pine forest under ambient and elevated CO2. Southeast Regional Center Annual Meeting (and Report), National Institute for Global Environmental Change Symposium, Tuscaloosa, Alabama, March 2000

• Oren R, Katul GG (1999) Carbon fluxes in a managed pine forest under ambient and elevated CO2. Southeast Regional Center Annual Meeting (and Report), National Institute for Global Environmental Change Symposium, Tuscaloosa, Alabama, March 1999

• Oren R, GG Katul, D Ellsworth (1998) Carbon fluxes in a managed pine forest under ambient and elevated CO2. Abstract in Southeast Regional Center Annual NIGEC Symposium, Tuscaloosa, Alabama, February 1998

• Katul GG, R Oren (1998) Spatial variability in Carbon fluxes in a homogeneous pine stand. Abstract in Southeast Regional Center Annual NIGEC Symposium, Tuscaloosa, Alabama, February 1998

• Oren R, Katul GG, Ellsworth D (1997) Carbon fluxes in a managed pine forest under ambient and elevated CO2. Abstract in Southeast Regional Center Annual NIGEC Symposium, Tuscaloosa, Alabama, February 1997

• Oren R, Katul GG, Ellsworth D (1996) Carbon fluxes in a managed pine forest under ambient and elevated CO2. Abstract in Southeast Regional Center Annual NIGEC Symposium, Tuscaloosa, Alabama, February 1996

• Oren R, Phillips N, Katul G, Huang C, Christensen NL, Zimmermann R, Ellsworth D, Hendrey G (1994) Water-use of managed pine and natural hardwood forests: Scaling ground-based measurements to the ecosystem level. Southeastern Regional Center, National Institute for Global Climate Change Annual Meeting, University of Alabama, Tuscaloosa, Alabama, 1994 Annual Report pp 41-45 (1994 NIGEC Annual Report pp 233-236).

• Zimmermann R, McDonalds KC, Way JB, Oren R (1994) Relationship between tree water potential and dielectric constant. JPL 730-0559-0-326, Director’s Discretionary Fund - Final Report, Jet Propulsion Laboratory, Pasadena, CA, January 15, 1994. JPL D-11180

• Oren R, Huang C, Phillips N, Pataki D, Christensen NL, Zimmermann R, Hendrey GR (1993) Water-use of managed pine and natural hardwood forests: Scaling ground-based measurements to the ecosystem level. Southeastern Regional Center, National Institute for Global Climate Change Annual Meeting, University of Alabama, Tuscaloosa, Alabama, 1993 Annual Report pp 55-59

• Oren R, Ce H, Phillips N, Zimmermann R, Christensen NL Jr. (1993) A summary report and presentation of current research on water relationships of pines in the North Carolina Division of SAF meeting, Durham, North Carolina, May 1993

• Zimmermann R, McDonald KC, Way JB, Oren R (1993) Relationship between tree water potential and dielectric constant. JPL 730-0559-0-326 DDF Final Report, November, 1993

• Oren R, Huang C, Phillips N, Christensen NL, Zimmermann R (1992) Water-use of managed pine and natural hardwood forests: Scaling ground-based measurements to the ecosystem level. Southeastern Regional Center, National Institute for Global Climate Change Annual Meeting, University of Alabama, Tuscaloosa, Alabama, 1994 Annual Report pp 53-55 (1992 NIGEC Annual Report pp 155-157)

• Oren R, Vane G, Zimmermann R, Carrere V, Schoeneberger P, Realmuto V, Schoeneberger M, Zebker H (1991) Approaches to Vegetation Mapping and Ecophysiological Hypothesis Testing Using Combined Information from TIMS, AVIRIS, and AIRSAR. Proceedings of The Third Annual JPL Airborne Geoscience Workshop (AIRSAR, AVIRIS, TIMS), JPL Publication 91-30:205-222

• Schulze E-D, Oren R, Zimmermann R (1987) The effect of emission on 30 year old stands of Picea abies growing on phylite in the Fichtelgebirge (NE Bavaria, FRG). Algem. Forst Zeitschrift (AFE) 27/28/29: F25-F30.

• Oren R, (1986) Canopy leaf area for assessing changes in stand productivity. In: Agren, GI (ed). Predicting consequences of intensive forest harvesting on long term productivity. Swedish University of Agricultural Science, Department of Ecology and Environmental Research Report nr. 26, pp. 151-154.

• Schulze, E-D, Oren R, Werk KS, Meyer J, Zimmermann R (1986) Kohlenstoff-, Wasser- und Naehstoffhaushalt von Fichten stark belasteter Hochlagenstandorte auf Phyllit in NO-Bayern. In: Fuehr F, Ganser G, Kloster G, Prinz B, Stuettgen E (eds.) Wirkungen von Luftverunreinigungen auf Waldbaeume und Waldboeden. BMFT Statusseminar 1985, Juel-Spez-369 106-117

• Meyer J, Oren R, Schulze E-D, Werk KS (1985) Effects of acid rain on forest tree root systems: A review. In: Proceedings of the COST Workshop on Indirect Effects of Air Pollution on Forest

Resume - Ram Oren

Trees: Root-rhizosphere interactions. Jülich, Federal Republic of Germany. 5/6 December 1985. Published by Commission on the European Committee, 1986.

• Schulze E-D, Oren R, Werk KS, Meyer J, Zimmermann R (1985) Water relations, transpiration and photosynthesis of Norway spruce in air-polluted high evaluation sites on granite, phylite and basalt in northeast Bavaria. In: FRG Ministry of Science and Technology plan (03 7335 7), Forest Decline Project, Theme: Water and Nutrient relations of Spruce. Scientific Paper 03 7271.

Popular Media • Radio: The World Today, News and Current Affairs programme of the BBC World Service; Today,

News and Current Affairs programme of the BBC UK Service; Today, News and Current Affairs programme of the BBC Scotland Service; Science Magazine, National Public Radio of Germany (Deutschlandfunkt); WUNC, National Public Radio; Voice of America; Canadian Broadcasting Corporation

• Newspapers: New York Times; Geotimes; O Estado de Sao Paulo, Brazil; L'Express, France; The Yomiuri Shimbun, Osaka, Japan; Chemical & Engineering News; Christian Science Monitor, Chronicle of Higher Education, A Columbian Newspaper, Washington Post (

• News Agencies: Associated Press (as seen in CNN.com/sci-tech); Duke News Service; The University of Michigan News and Information Services; Climate Change Listserves, U.S. Environmental Protection Agency; Agence France Presse

• Television: Discoveries and Breakthroughs Inside Science a video program produced by the American Institute of Physics, syndicated to about 60 stations targeting one in each market throughout the United States (including include: WRC Washington DC, WTVF Nashville, WTVJ Miami, KVBC Las Vegas, KXAN Austin, and WXAS Dallas); Japan Public Broadcasting (NHK)—two documentaries about life in the Mesozoic and a large-scale dinosaur expo planned for 2006

GRANTS (declined proposals are not presented) Pending

1. Reducing uncertainty in current and projected carbon sequestration in southeastern U.S.: Phase VI – Southern Global Change Program, USDA Forest Service; $32K – 1 yr; 2005 - 2006

current

1. Scaling up of Carbon Exchange Dynamics from AmeriFlux Sites to a Super-Region in the Eastern United States - DOE Terrestrial Carbon Program. $304,760, 3-yrs. Schmid (PI) with Katul, Post, Rahman. 2004-2007.

2. Forest-Atmosphere Carbon Transfer and Storage. Terrestrial Carbon Processes - DOE; 4th 3-yr cycle; $3.6 M. Oren (PI). 2004 - 2007.

3. Forest-Atmosphere Carbon Transfer and Storage. Terrestrial Carbon Processes - DOE; 4th 3-yr cycle; 82,500 M (Supplement). Oren (PI). 2005.

4. Measurements and modeling of net carbon exchange over a southeastern loblolly pine plantation at the Duke Forest AmeriFlux site -- National Institute for Global Environmental Change, Southeast Regional Center, DOE; 429K – 3 yrs. Oren (PI) with Katul and Palmroth. 2002-2006.

5. Controls of net ecosystem exchange at an old field, a pine plantation, and a hardwood forest under identical climatic and edaphic conditions – DOE Terrestrial Carbon Program; $493,139 – 3 yrs, Oren (PI) with Katul, Albertson and Palmroth. 2004 – 2007

6. Reducing uncertainty in current and projected carbon sequestration in southeastern U.S.: Phase IV – Southern Global Change Program, USDA Forest Service; $182K – 3 yr; Oren (PI) with Palmroth. 2004 – 2006

7. The Hawkesbury Forest Experiment: Impacts of Precipitation and CO2 on Trees. Australian Greenhouse Office, Aus $3,764,750 – 4 years. McMurtrie (PI) 2005 – 2009.

8. Fingerprints of global climate change and forest management on rhizosphere carbon and nutrient cycling. Australian Research Council Discovery Projects, Aus $2,151,463 – 3 years Xu (PI) 2005 – 2008.

Completed 1. Reducing uncertainty in current and projected carbon sequestration in southeastern U.S.: Phase V

– Southern Global Change Program, USDA Forest Service; $32K – 1 yr; 2004 - 2005 2. Forest-Atmosphere Carbon Transfer and Storage. Terrestrial Carbon Processes - DOE; 3nd 3-yr

cycle; projected Oren’s portion 1,650K – 3-yrs (3rd round). With Schlesinger and Hendrey (PIs). 2001 - 2004.

3. Assessing ecological models of varying complexity for predicting carbon sequestration in managed pine plantations. National Institute for Global Environmental Change, Southeast Regional Center, DOE; 145K – 1 yr (up to 3 yrs renewable). William H Schlesinger, Gabriel Katul (PIs); 2001 - 2004

4. Controls of net ecosystem exchange at an old field, a pine plantation, and a hardwood forest under identical climatic and edaphic conditions – DOE Terrestrial Carbon Program; $493,139 – 3 yrs, 2000 - 2003Reducing uncertainty in current and projected carbon sequestration in southeastern U.S.: Phase III – Southern Global Change Program, USDA Forest Service; $125K – 1 yr; 2002 - 2003

5. Reducing uncertainty in current and projected carbon sequestration in southeastern U.S.: Phase II – Southern Global Change Program, USDA Forest Service; $75K – 1 yr; 2001 - 2002

6. Measurements and modeling of net carbon exchange over a southeastern loblolly pine plantation at the Duke Forest AmeriFlux site -- National Institute for Global Environmental Change, Southeast Regional Center, DOE; 395K – 3 yrs. With Katul and Ellsworth. 1998-2002.

7. Modeling CO2 fluxes over forest ecosystems. Australian Research Council; Aus$243,286, $0 for Oren; with Ross McMurtrie, A. Dewar, Sune Linder; 2000-2002

8. Reducing uncertainty in current and projected carbon sequestration in southeastern U.S.: Phase I – Southern Global Change Program, USDA Forest Service; $100,000 – 1 yr; 2000 - 2001

9. Reducing uncertainty in current and projected carbon sequestration in southeastern U.S – NCASI; 10,000 – 1 yr, 2000 - 2001

Resume - Ram Oren

10. Reducing uncertainty in current and projected carbon sequestration in southeastern U.S. – USDA Forest Service; $11,900 – 1 yr, 2000 - 2001

11. Forest-Atmosphere Carbon Transfer and Storage. Terrestrial Carbon Processes - DOE; 2nd 3-yr cycle; Oren’s portion to date 636K – 6-yrs. With Schlesinger, Oren and Hendrey (PIs), Katul, Richter, Urban, and others. 1995-2001.

12. Hosting the Annual Meeting of SERC - NIGEC – Global Change Initiative of Duke University; 4.5K – 1 yr. With Katul. 2001

13. Support to Facilitate Canopy Research at the Duke Forest C-H2O Research Sites - Provost Fund; 50K – 1 yr.; 2001 – 2002

14. Modeling Soil Carbon Dioxide Production and Transport using Inverse Models -- Professor Sune Linder, Swedish University of Agricultural Sciences; $0 – 1 yr; with Gabriel Katul; 2000

15. The effect of light and leaf-specific conductivity on stomatal response to vapour pressure deficit --Professor Sune Linder, Swedish University of Agricultural Sciences; $0 – 1yr with Karina Schäfer; 2000

16. Responses of a loblolly pine plantation to elevated supplies of CO2 and nutrients – USDA Forest Service Cooperative agreement; 133K - 2 yrs. With Ellsworth. 1998-1999.

17. Effects of irrigation and fertilization on transpiration and canopy conductance of Pinus taeda stands -- WESTVACO Fellowship; 30.5K - 3-yrs. With Ewers. 1997-1999.

18. Effects of irrigation and fertilization on transpiration and canopy conductance of Pinus taeda stands – USDA Forest Service Cooperative agreement; 63K - 3-yrs. With Ewers. 1997-1999.

19. Carbon Fluxes in Managed Pine Forests Under Ambient and Elevated CO2. SRC-NIGEC-DOE; 305K + two supplements for a total of 25K - 3-yrs. With Katul and Ellsworth. 1995-1997.

20. Mobile gas-exchange laboratory – NSF Instrumentation Grant, match with Duke University. 450K – 3-yrs. With Katul and Christensen (PIs). 1996-1998

21. Spatial variability in turbulent fluxes in the roughness sublayer of an even-aged pine forest -- SRC-NIGEC-DOE; 25K - 1 yr. With Katul. 1996.

22. Water-use by Alaskan flood-plain and upland white spruce stands with and without summer precipitation -- Ph.D. Fellowship, JPL Discretionary Fund; 22K – 2yrs; With Billings. 1994-1995.

23. Impact of small scale variance on the mean latent and sensible heat flux from a grass field -- Technical support JPL Discretionary Fund ; 3.7K; 1994.

24. Prediction and measurements of oxidant precursor emissions from forested ecosystems: scaling from leaf to canopy -- Emissions and Modeling AEERL-4-13, EPA; 450K - 3-yrs. With Sigmon (PI), Katul, and others. 1995-1997.

25. Water-use by managed Pine and natural hardwood stands -- SRC - NIGEC - DOE; 296K – 3-yrs; With Christensen. 1992-1994.

26. Water uptake from deep soil horizons in pasture, second-growth forest, and primary forest in south-eastern Amazon -- Global Climate Change Fellowship, NASA; 66K – 3-yrs; With Jipp. 1993-1995.

27. Transpiration in relation to seasonal hydrology in rainforest ecosystems in Belize -- Director's Discretionary Fund, Jet Propulsion Laboratory. 30K. 1991.

28. Supplement for nutrient analyses (to the U.S. Forest Service-funded study on the Induction of nutritional disharmony and its effects on loblolly pine growth on soils low in nitrogen and phosphorus) -- Interdisciplinary Environmental Research and Education Program, The Mellon Foundation. 3K. With Richter, Co-PI. 1990.

29. Can dielectric change in tree stems be used to estimate parameters of plant water relations? Director's Discretionary Fund, Jet Propulsion Laboratory. 5K. With Way, Co-PI. 1990.

30. Partitioning of tropical ecosystems into functional eco-groups with a geographic information system - A method development. Interdisciplinary Environmental Research and Education Program, The Mellon Foundation. 8.2K. With Knoerr, Co-PI. 1990.

31. Relationships between tree water relations and remotely-sensed data. Director's Discretionary Fund, Jet Propulsion Laboratory. 86K. With Way, Co-PI. 1990.

32. Eco-physiological characterization of a tropical rainforest ecosystem in relation to multi-sensor remote-sensing evaluation of the Rio Bravo Reserve, Belize - The Tropical Rainforest Ecology Experiment (TREE) -- National Geographic Society, NASA and the Jet Propulsion Laboratory. 400K – 3-yrs. With Vane Co-PI. 1990-1993.

Resume - Ram Oren

33. Induction of nutritional disharmony and its effect on conifer and broad-leaf tree growth on soils low in base cations. Interdisciplinary Environmental Research and Education Program, The Mellon Foundation. 8. With Richter, Co-PI. 1989.

34. Mortality of advanced regeneration in near null carbon balance state in relation to elevated stem respiration caused by increased temperature -- Forsttoxikologie through Universität Bayreuth. 110K – 1-yr. 1989.

35. Induction of nutritional disharmony and its effect on loblolly pine growth on soils low in nitrogen and phosphorus -- U.S. Forest Service; 40K – 1-yr; With Richter as a Co-PI. 1988.

36. Instrument support for the purchase of a leaf-area meter. Research Support Fund, Duke University. 5K. 1987.

37. NOTE: The German system of funding proposals is very different from the American system. For example, my research, and that of my M.S.-equivalent (3) and Ph.D. students (2) in Germany has been covered since 1985 mostly by the Forsttoxikologie and the Bayreuther Institut für Ökosystemforschung (BITÖK). Proposals are submitted in terms of the actual resources necessary for the study and not in terms of monetary needs. The resources may include the space and time necessary in a growth chamber or a greenhouse, necessary instruments, types and number of chemical analyses, and number of person-hours required. Thus, it is not possible to give the actual budget of these studies. In general, the studies were mostly associated with nutrient stress of Picea abies; the results have been published with N. Katz, A. Berger and N. Buchmann. A conservative estimate of an American equivalent budget for all the studies combined is at least 250K per year (excluding overhead) from 1985 to 1989.

Resume - Ram Oren

1. Ollinger SV, Richardson AD, Martin ME, Hollinger DY, Frolking S, Reich PB, Plourde LC, Smith M-L, Bolstad PV, Davis KJ, Katul GG, Martin TA, Monson RK, Oren R, Paw U KT, Schmid HP, Wofsy

SC (0000) Canopy nitrogen, carbon assimilation and the albedo of U.S. forest ecosystems.

revised 10-4-07 ram oren education positions … · resume - ram oren page 2 canada research chairs...

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