Ram Oren | Scholars@Duke

Ram Oren
Nicholas Professor of Earth Systems Science

With his graduate students, Dr. Oren quantifies the components of water flux in forest ecosystems and the influence of biotic and abiotic factors on water and, due to strong links between carbon and water, on carbon flux. Climate variability, including variations in air temperature, vapor pressure deficit, incoming radiation and soil moisture, and environmental change, including elevated atmospheric carbon dioxide, affect the intra- and inter-annual patterns and amounts of water used by forest ecosystems, and its spatial distribution, as well as carbon uptake and sequestration. The variation of water flux influence the temporal and spatial partitioning of incoming radiation between latent and sensible heat. Using a local mass balance approach and detailed measurements of water flux and driving variables in the soil, plants, and the atmosphere, in forests from Brazil to Alaska, Dr. Oren evaluates the likely responses of different forest ecosystems to environmental change.

Current Appointments & Affiliations

Nicholas Professor of Earth Systems Science, Environmental Sciences and Policy, Nicholas School of the Environment 2009
Professor of Ecology, Environmental Sciences and Policy, Nicholas School of the Environment 2002
Professor in the Department of Civil and Environmental Engineering, Civil and Environmental Engineering, Pratt School of Engineering 2015

Contact Information

A246a Lev Sci Res Ctr, Durham, NC 27708
Box 90328, Durham, NC 27708-0328
ramoren@duke.edu (919) 613-8032

Background
Education, Training, & Certifications
- Ph.D., Oregon State University 1984
- M.S., Oregon State University 1980
- B.S., Humboldt State University 1978
Duke Appointment History
- Professor in the Department of Civil and Environmental Engineering, Civil and Environmental Engineering, Pratt School of Engineering 2009 - 2012
- Chair, Division of Environmental Sciences and Policy, Environmental Sciences and Policy, Nicholas School of the Environment 2007 - 2010
- Associate Professor with Tenure, Nicholas School of the Environment, Duke University 1993 - 2002
- Assistant Professor, Nicholas School of the Environment, Duke University 1986 - 1993
Recognition
In the News
- NOV 27, 2018
  
  Duke Faculty Plentiful On ‘Highly Cited’ List
Expertise
Global Scholarship
- Research
Research
Selected Grants
Publications & Artistic Works
Selected Publications
- Academic Articles
  - Domec, Jean-Christophe, Henry Berghoff, Danielle Way, Menachem Moshelion, Sari Palmroth, Katre Kets, Cheng-Wei Huang, and Ram Oren. “Mechanisms for minimizing height-related stomatal conductance declines in tall vines..” Plant, Cell & Environment, May 23, 2019. https://doi.org/10.1111/pce.13593.
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  - Wang, Na, Sari Palmroth, Christopher A. Maier, Jean-Christophe Domec, and Ram Oren. “Anatomical changes with needle length are correlated with leaf structural and physiological traits across five Pinus species..” Plant, Cell & Environment 42, no. 5 (May 2019): 1690–1704. https://doi.org/10.1111/pce.13516.
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  - Walker, Anthony P., Martin G. De Kauwe, Belinda E. Medlyn, Sönke Zaehle, Colleen M. Iversen, Shinichi Asao, Bertrand Guenet, et al. “Decadal biomass increment in early secondary succession woody ecosystems is increased by CO2 enrichment..” Nature Communications 10, no. 1 (February 14, 2019). https://doi.org/10.1038/s41467-019-08348-1.
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  - Lim, H., R. Oren, T. Näsholm, M. Strömgren, T. Lundmark, H. Grip, and S. Linder. “Boreal forest biomass accumulation is not increased by two decades of soil warming.” Nature Climate Change 9, no. 1 (January 1, 2019): 49–52. https://doi.org/10.1038/s41558-018-0373-9.
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  - Lim, H., R. Oren, T. Näsholm, M. Strömgren, T. Lundmark, H. Grip, and S. Linder. “Publisher Correction: Boreal forest biomass accumulation is not increased by two decades of soil warming (Nature Climate Change, (2019), 9, 1, (49-52), 10.1038/s41558-018-0373-9).” Nature Climate Change 9, no. 3 (January 1, 2019). https://doi.org/10.1038/s41558-019-0413-0.
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  - Yin, Chunying, Sari Palmroth, Xueyong Pang, Bo Tang, Qing Liu, and Ram Oren. “Differential responses of Picea asperata and Betula albosinensis to nitrogen supply imposed by water availability..” Tree Physiology 38, no. 11 (November 2018): 1694–1705. https://doi.org/10.1093/treephys/tpy048.
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  - Ward, Eric J., Ram Oren, Hyun Seok Kim, Dohyoung Kim, Pantana Tor-Ngern, Brent E. Ewers, Heather R. McCarthy, et al. “Evapotranspiration and water yield of a pine-broadleaf forest are not altered by long-term atmospheric [CO2 ] enrichment under native or enhanced soil fertility..” Global Change Biology 24, no. 10 (October 2018): 4841–56. https://doi.org/10.1111/gcb.14363.
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  - Tor-ngern, P., R. Oren, S. Palmroth, K. Novick, A. Oishi, S. Linder, M. Ottosson-Löfvenius, and T. Näsholm. “Water balance of pine forests: Synthesis of new and published results.” Agricultural and Forest Meteorology 259 (September 15, 2018): 107–17. https://doi.org/10.1016/j.agrformet.2018.04.021.
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  - Ryan, Michael G., Ram Oren, and Richard H. Waring. “Fruiting and sink competition..” Tree Physiology 38, no. 9 (September 2018): 1261–66. https://doi.org/10.1093/treephys/tpy114.
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  - Montaldo, N., and R. Oren. “Changing Seasonal Rainfall Distribution With Climate Directs Contrasting Impacts at Evapotranspiration and Water Yield in the Western Mediterranean Region.” Earth’S Future 6, no. 6 (June 1, 2018): 841–56. https://doi.org/10.1029/2018EF000843.
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  - Tarvainen, Lasse, Göran Wallin, Hyungwoo Lim, Sune Linder, Ram Oren, Mikaell Ottosson Löfvenius, Mats Räntfors, Pantana Tor-Ngern, and John Marshall. “Photosynthetic refixation varies along the stem and reduces CO2 efflux in mature boreal Pinus sylvestris trees..” Tree Physiology 38, no. 4 (April 2018): 558–69. https://doi.org/10.1093/treephys/tpx130.
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  - Kim, Dohyoung, Ram Oren, James S. Clark, Sari Palmroth, A Christopher Oishi, Heather R. McCarthy, Chris A. Maier, and Kurt Johnsen. “Dynamics of soil CO2 efflux under varying atmospheric CO2 concentrations reveal dominance of slow processes..” Global Change Biology 23, no. 9 (September 2017): 3501–12. https://doi.org/10.1111/gcb.13713.
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  - Lim, Hyungwoo, Ram Oren, Sune Linder, Fredrik From, Annika Nordin, Nils Fahlvik, Tomas Lundmark, and Torgny Näsholm. “Annual climate variation modifies nitrogen induced carbon accumulation of Pinus sylvestris forests..” Ecological Applications : A Publication of the Ecological Society of America 27, no. 6 (September 2017): 1838–51. https://doi.org/10.1002/eap.1571.
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  - Way, Danielle A., Joseph R. Stinziano, Henry Berghoff, and Ram Oren. “How well do growing season dynamics of photosynthetic capacity correlate with leaf biochemistry and climate fluctuations?.” Tree Physiology 37, no. 7 (July 2017): 879–88. https://doi.org/10.1093/treephys/tpx086.
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  - Metcalfe, Daniel B., Daniel Ricciuto, Sari Palmroth, Catherine Campbell, Vaughan Hurry, Jiafu Mao, Sonja G. Keel, et al. “Informing climate models with rapid chamber measurements of forest carbon uptake..” Global Change Biology 23, no. 5 (May 2017): 2130–39. https://doi.org/10.1111/gcb.13451.
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  - Franklin, Oskar, Camila Aguetoni Cambui, Linda Gruffman, Sari Palmroth, Ram Oren, and Torgny Näsholm. “The carbon bonus of organic nitrogen enhances nitrogen use efficiency of plants..” Plant, Cell & Environment 40, no. 1 (January 2017): 25–35. https://doi.org/10.1111/pce.12772.
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  - Tor-Ngern, Pantana, Ram Oren, Andrew C. Oishi, Joshua M. Uebelherr, Sari Palmroth, Lasse Tarvainen, Mikaell Ottosson-Löfvenius, Sune Linder, Jean-Christophe Domec, and Torgny Näsholm. “Ecophysiological variation of transpiration of pine forests: synthesis of new and published results..” Ecological Applications : A Publication of the Ecological Society of America 27, no. 1 (January 2017): 118–33. https://doi.org/10.1002/eap.1423.
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  - Oishi, A. C., D. A. Hawthorne, and R. Oren. “Baseliner: An open-source, interactive tool for processing sap flux data from thermal dissipation probes.” Softwarex 5 (July 5, 2016): 139–43. https://doi.org/10.1016/j.softx.2016.07.003.
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  - Hasselquist, Niles J., Daniel B. Metcalfe, Erich Inselsbacher, Zsofia Stangl, Ram Oren, Torgny Näsholm, and Peter Högberg. “Greater carbon allocation to mycorrhizal fungi reduces tree nitrogen uptake in a boreal forest..” Ecology 97, no. 4 (April 2016): 1012–22.
  - Montaldo, N., and R. Oren. “The way the wind blows matters to ecosystem water use efficiency.” Agricultural and Forest Meteorology 217 (February 15, 2016): 1–9. https://doi.org/10.1016/j.agrformet.2015.11.002.
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  - Kim, Dohyoung, Ram Oren, and Song S. Qian. “Response to CO2 enrichment of understory vegetation in the shade of forests..” Global Change Biology 22, no. 2 (February 2016): 944–56. https://doi.org/10.1111/gcb.13126.
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  - Henriksson, Nils, Lasse Tarvainen, Hyungwoo Lim, Pantana Tor-Ngern, Sari Palmroth, Ram Oren, John Marshall, and Torgny Näsholm. “Stem compression reversibly reduces phloem transport in Pinus sylvestris trees..” Tree Physiology 35, no. 10 (October 2015): 1075–85. https://doi.org/10.1093/treephys/tpv078.
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  - Moshelion, Menachem, Ofer Halperin, Rony Wallach, Ram Oren, and Danielle A. Way. “Role of aquaporins in determining transpiration and photosynthesis in water-stressed plants: crop water-use efficiency, growth and yield..” Plant, Cell & Environment 38, no. 9 (September 2015): 1785–93. https://doi.org/10.1111/pce.12410.
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  - Zhang, Q., G. G. Katul, R. Oren, E. Daly, S. Manzoni, and D. Yang. “The hysteresis response of soil CO<inf>2</inf> concentration and soil respiration to soil temperature.” Journal of Geophysical Research G: Biogeosciences 120, no. 8 (August 1, 2015): 1605–18. https://doi.org/10.1002/2015JG003047.
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  - Lim, H., R. Oren, S. Palmroth, P. Tor-ngern, T. Mörling, T. Näsholm, T. Lundmark, H. S. Helmisaari, J. Leppälammi-Kujansuu, and S. Linder. “Inter-annual variability of precipitation constrains the production response of boreal Pinus sylvestris to nitrogen fertilization.” Forest Ecology and Management 348 (July 5, 2015): 31–45. https://doi.org/10.1016/j.foreco.2015.03.029.
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  - Attia, Ziv, Jean-Christophe Domec, Ram Oren, Danielle A. Way, and Menachem Moshelion. “Growth and physiological responses of isohydric and anisohydric poplars to drought..” Journal of Experimental Botany 66, no. 14 (July 2015): 4373–81. https://doi.org/10.1093/jxb/erv195.
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  - Bell, David M., Eric J. Ward, A Christopher Oishi, Ram Oren, Paul G. Flikkema, and James S. Clark. “A state-space modeling approach to estimating canopy conductance and associated uncertainties from sap flux density data..” Tree Physiology 35, no. 7 (July 2015): 792–802. https://doi.org/10.1093/treephys/tpv041.
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  - Way, Danielle A., Ram Oren, and Yulia Kroner. “The space-time continuum: the effects of elevated CO2 and temperature on trees and the importance of scaling..” Plant, Cell & Environment 38, no. 6 (June 2015): 991–1007. https://doi.org/10.1111/pce.12527.
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  - Xiong, Wei, Ram Oren, Yanhui Wang, Pengtao Yu, Hailong Liu, Gongxiang Cao, Lihong Xu, Yunni Wang, and Haijun Zuo. “Heterogeneity of competition at decameter scale: patches of high canopy leaf area in a shade-intolerant larch stand transpire less yet are more sensitive to drought..” Tree Physiology 35, no. 5 (May 2015): 470–84. https://doi.org/10.1093/treephys/tpv022.
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  - Medlyn, B. E., S. Zaehle, M. G. De Kauwe, A. P. Walker, M. C. Dietze, P. J. Hanson, T. Hickler, et al. “Using ecosystem experiments to improve vegetation models.” Nature Climate Change 5, no. 6 (January 1, 2015): 528–34. https://doi.org/10.1038/nclimate2621.
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  - Moshelion, M., O. Halperin, R. Wallach, R. Oren, and D. A. Way. “Role of aquaporins in determining transpiration and photosynthesis in water-stressed plants: Crop water-use efficiency, growth and yield.” Plant, Cell and Environment 38, no. 9 (2015): 1785–93. https://doi.org/10.1111/pce.12410.
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  - Tor-ngern, Pantana, Ram Oren, Eric J. Ward, Sari Palmroth, Heather R. McCarthy, and Jean-Christophe Domec. “Increases in atmospheric CO2 have little influence on transpiration of a temperate forest canopy..” The New Phytologist 205, no. 2 (January 2015): 518–25. https://doi.org/10.1111/nph.13148.
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  - De Kauwe, Martin G., Belinda E. Medlyn, Sönke Zaehle, Anthony P. Walker, Michael C. Dietze, Ying-Ping Wang, Yiqi Luo, et al. “Where does the carbon go? A model-data intercomparison of vegetation carbon allocation and turnover processes at two temperate forest free-air CO2 enrichment sites..” The New Phytologist 203, no. 3 (August 2014): 883–99. https://doi.org/10.1111/nph.12847.
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  - Kim, D., R. Oren, A. C. Oishi, C. I. Hsieh, N. Phillips, K. A. Novick, and P. C. Stoy. “Erratum to "Sensitivity of stand transpiration to wind velocity in a mixed broadleaved deciduous forest" [Agric. Forest Meteorol. 187 (2014) 62-71].” Agricultural and Forest Meteorology 192–193 (July 15, 2014). https://doi.org/10.1016/j.agrformet.2014.02.012.
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  - Zaehle, Sönke, Belinda E. Medlyn, Martin G. De Kauwe, Anthony P. Walker, Michael C. Dietze, Thomas Hickler, Yiqi Luo, et al. “Evaluation of 11 terrestrial carbon-nitrogen cycle models against observations from two temperate Free-Air CO2 Enrichment studies..” The New Phytologist 202, no. 3 (May 2014): 803–22. https://doi.org/10.1111/nph.12697.
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  - Kim, D., R. Oren, A. C. Oishi, C. I. Hsieh, N. Phillips, K. A. Novick, and P. C. Stoy. “Sensitivity of stand transpiration to wind velocity in a mixed broadleaved deciduous forest.” Agricultural and Forest Meteorology 187 (April 5, 2014): 62–71. https://doi.org/10.1016/j.agrformet.2013.11.013.
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  - Oishi, A Christopher, Sari Palmroth, Kurt H. Johnsen, Heather R. McCarthy, and Ram Oren. “Sustained effects of atmospheric [CO2] and nitrogen availability on forest soil CO2 efflux..” Global Change Biology 20, no. 4 (April 2014): 1146–60. https://doi.org/10.1111/gcb.12414.
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  - Oishi, A. C., S. Palmroth, K. H. Johnsen, H. R. Mccarthy, and R. Oren. “Sustained effects of atmospheric [CO2] and nitrogen availability on forest soil CO2efflux.” Global Change Biology 20, no. 4 (April 1, 2014): 1146–60. https://doi.org/10.1111/gcb.12414.
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  - Nolan, Rachael H., Patrick J. Mitchell, Ross A. Bradstock, and Patrick N. J. Lane. “Structural adjustments in resprouting trees drive differences in post-fire transpiration..” Tree Physiology 34, no. 2 (February 16, 2014): 123–36. https://doi.org/10.1093/treephys/tpt125.
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  - Oishi, A. C., S. Palmroth, K. H. Johnsen, H. R. Mccarthy, and R. Oren. “Sustained effects of atmospheric [CO2] and nitrogen availability on forest soil CO2 efflux.” Global Change Biology 20, no. 4 (2014): 1146–60.
  - Walker, A. P., P. J. Hanson, M. G. De Kauwe, B. E. Medlyn, S. Zaehle, S. Asao, M. Dietze, et al. “Comprehensive ecosystem model-data synthesis using multiple data sets at two temperate forest free-air CO2 enrichment experiments: Model performance at ambient CO2 concentration.” Journal of Geophysical Research: Biogeosciences 119, no. 5 (January 1, 2014): 937–64. https://doi.org/10.1002/2013JG002553.
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  - Zaehle, S., B. E. Medlyn, M. G. De Kauwe, A. P. Walker, M. C. Dietze, T. Hickler, Y. Luo, et al. “Evaluation of 11 terrestrial carbon-nitrogen cycle models against observations from two temperate Free-Air CO 2 Enrichment studies.” New Phytologist 202, no. 3 (January 1, 2014): 803–22. https://doi.org/10.1111/nph.12697.
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  - De Kauwe, Martin G., Belinda E. Medlyn, Sönke Zaehle, Anthony P. Walker, Michael C. Dietze, Thomas Hickler, Atul K. Jain, et al. “Forest water use and water use efficiency at elevated CO2 : a model-data intercomparison at two contrasting temperate forest FACE sites..” Global Change Biology 19, no. 6 (June 2013): 1759–79. https://doi.org/10.1111/gcb.12164.
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  - Oishi, A. C., S. Palmroth, J. R. Butnor, K. H. Johnsen, and R. Oren. “Spatial and temporal variability of soil CO2 efflux in three proximate temperate forest ecosystems.” Agricultural and Forest Meteorology 171–172 (February 28, 2013): 256–69. https://doi.org/10.1016/j.agrformet.2012.12.007.
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  - Ward, Eric J., David M. Bell, James S. Clark, and Ram Oren. “Hydraulic time constants for transpiration of loblolly pine at a free-air carbon dioxide enrichment site..” Tree Physiology 33, no. 2 (February 2013): 123–34. https://doi.org/10.1093/treephys/tps114.
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  - Ward, Eric J., Ram Oren, David M. Bell, James S. Clark, Heather R. McCarthy, Hyun-Seok Kim, and Jean-Christophe Domec. “The effects of elevated CO2 and nitrogen fertilization on stomatal conductance estimated from 11 years of scaled sap flux measurements at Duke FACE..” Tree Physiology 33, no. 2 (February 2013): 135–51. https://doi.org/10.1093/treephys/tps118.
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  - Kauwe, M. G. D., B. E. Medlyn, S. Zaehle, A. P. Walker, M. C. Dietze, T. Hickler, A. K. Jain, et al. “Forest water use and water use efficiency at elevated CO₂: A model-data intercomparison at two contrasting temperate forest FACE sites.” Global Change Biology 19, no. 6 (2013): 1759–79. https://doi.org/10.1111/gcb.12164.
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  - Drake, J. E., A. C. Oishi, M. A. Giasson, R. Oren, K. H. Johnsen, and A. C. Finzi. “Trenching reduces soil heterotrophic activity in a loblolly pine (Pinus taeda) forest exposed to elevated atmospheric [CO 2 ] and N fertilization.” Agricultural and Forest Meteorology 165 (November 15, 2012): 43–52. https://doi.org/10.1016/j.agrformet.2012.05.017.
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  - Dieleman, Wouter I. J., Sara Vicca, Feike A. Dijkstra, Frank Hagedorn, Mark J. Hovenden, Klaus S. Larsen, Jack A. Morgan, et al. “Simple additive effects are rare: a quantitative review of plant biomass and soil process responses to combined manipulations of CO2 and temperature..” Global Change Biology 18, no. 9 (September 2012): 2681–93. https://doi.org/10.1111/j.1365-2486.2012.02745.x.
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  - Katul, G. G., R. Oren, S. Manzoni, C. Higgins, and M. B. Parlange. “Evapotranspiration: A process driving mass transport and energy exchange in the soil-plant-atmosphere-climate system.” Reviews of Geophysics 50, no. 3 (September 1, 2012). https://doi.org/10.1029/2011RG000366.
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  - Novick, K. A., G. G. Katul, H. R. McCarthy, and R. Oren. “Increased resin flow in mature pine trees growing under elevated CO2 and moderate soil fertility..” Tree Physiology 32, no. 6 (June 2012): 752–63. https://doi.org/10.1093/treephys/tpr133.
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  - Bauerle, William L., Ram Oren, Danielle A. Way, Song S. Qian, Paul C. Stoy, Peter E. Thornton, Joseph D. Bowden, Forrest M. Hoffman, and Robert F. Reynolds. “Photoperiodic regulation of the seasonal pattern of photosynthetic capacity and the implications for carbon cycling..” Proceedings of the National Academy of Sciences of the United States of America 109, no. 22 (May 14, 2012): 8612–17. https://doi.org/10.1073/pnas.1119131109.
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  - Long, X., C. Chen, Z. Xu, R. Oren, and J. Z. He. “Abundance and community structure of ammonia-oxidizing bacteria and archaea in a temperate forest ecosystem under ten-years elevated CO 2.” Soil Biology and Biochemistry 46 (March 1, 2012): 163–71. https://doi.org/10.1016/j.soilbio.2011.12.013.
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  - Zhang, Yanqun, Ram Oren, and Shaozhong Kang. “Spatiotemporal variation of crown-scale stomatal conductance in an arid Vitis vinifera L. cv. Merlot vineyard: direct effects of hydraulic properties and indirect effects of canopy leaf area..” Tree Physiology 32, no. 3 (March 2012): 262–79. https://doi.org/10.1093/treephys/tpr120.
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  - Oren, Ram, and Claire Bird. “Message from the editor-in-chief..” Tree Physiology 32, no. 2 (February 2012). https://doi.org/10.1093/treephys/tps006.
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  - Ellsworth, D. S., R. Thomas, K. Y. Crous, S. Palmroth, E. Ward, C. Maier, E. Delucia, and R. Oren. “Elevated CO 2 affects photosynthetic responses in canopy pine and subcanopy deciduous trees over 10 years: A synthesis from Duke FACE.” Global Change Biology 18, no. 1 (January 1, 2012): 223–42. https://doi.org/10.1111/j.1365-2486.2011.02505.x.
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  - Way, D. A., R. Oren, H. S. Kim, and G. G. Katul. “How well do stomatal conductance models perform on closing plant carbon budgets? A test using seedlings grown under current and elevated air temperatures.” Journal of Geophysical Research: Biogeosciences 116, no. 4 (December 1, 2011). https://doi.org/10.1029/2011JG001808.
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  - Lee, Xuhui, Michael L. Goulden, David Y. Hollinger, Alan Barr, T Andrew Black, Gil Bohrer, Rosvel Bracho, et al. “Observed increase in local cooling effect of deforestation at higher latitudes..” Nature 479, no. 7373 (November 16, 2011): 384–87. https://doi.org/10.1038/nature10588.
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  - Bertin, S., S. Palmroth, H. S. Kim, M. P. Perks, M. Mencuccini, and R. Oren. “Modelling understorey light for seedling regeneration in continuous cover forestry canopies.” Forestry 84, no. 4 (October 1, 2011): 397–409. https://doi.org/10.1093/forestry/cpr026.
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  - Weng, E., Y. Luo, C. Gao, and R. Oren. “Uncertainty analysis of forest carbon sink forecast with varying measurement errors: A data assimilation approach.” Journal of Plant Ecology 4, no. 3 (September 1, 2011): 178–91. https://doi.org/10.1093/jpe/rtr018.
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  - Drake, John E., Anne Gallet-Budynek, Kirsten S. Hofmockel, Emily S. Bernhardt, Sharon A. Billings, Robert B. Jackson, Kurt S. Johnsen, et al. “Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long-term enhancement of forest productivity under elevated CO₂..” Ecology Letters 14, no. 4 (April 2011): 349–57. https://doi.org/10.1111/j.1461-0248.2011.01593.x.
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  - Warren, Jeffrey M., Richard J. Norby, and Stan D. Wullschleger. “Elevated CO₂ enhances leaf senescence during extreme drought in a temperate forest..” Tree Physiology 31, no. 2 (February 2011): 117–30. https://doi.org/10.1093/treephys/tpr002.
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  - Xiao, J., Q. Zhuang, B. E. Law, D. D. Baldocchi, J. Chen, A. D. Richardson, J. M. Melillo, et al. “Assessing net ecosystem carbon exchange of U.S. terrestrial ecosystems by integrating eddy covariance flux measurements and satellite observations.” Agricultural and Forest Meteorology 151, no. 1 (January 15, 2011): 60–69. https://doi.org/10.1016/j.agrformet.2010.09.002.
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  - Kim, Hyun-Seok, Sari Palmroth, Mathieu Thérézien, Pauline Stenberg, and Ram Oren. “Analysis of the sensitivity of absorbed light and incident light profile to various canopy architecture and stand conditions..” Tree Physiology 31, no. 1 (January 2011): 30–47. https://doi.org/10.1093/treephys/tpq098.
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  - Oren, R., and C. Kennedy. “Tree Physiology: Introduction.” Tree Physiology 31, no. 1 (January 1, 2011). https://doi.org/10.1093/treephys/tpr023.
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  - Oren, Ram, and Cathy Kennedy. “Changes implemented in Tree Physiology..” Tree Physiology 31, no. 1 (January 2011). https://doi.org/10.1093/treephys/tpr023.
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  - Ge, Yuan, Chengrong Chen, Zhihong Xu, Ram Oren, and Ji-Zheng He. “The spatial factor, rather than elevated CO₂, controls the soil bacterial community in a temperate Forest Ecosystem..” Applied and Environmental Microbiology 76, no. 22 (November 2010): 7429–36. https://doi.org/10.1128/AEM.00831-10.
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  - Palmroth, S., G. G. Katul, D. Hui, H. R. McCarthy, R. B. Jackson, and R. Oren. “Estimation of long-term basin scale evapotranspiration from streamflow time series.” Water Resources Research 46, no. 10 (October 29, 2010). https://doi.org/10.1029/2009WR008838.
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  - Domec, Jean-Christophe, Karina Schäfer, Ram Oren, Hyun S. Kim, and Heather R. McCarthy. “Variable conductivity and embolism in roots and branches of four contrasting tree species and their impacts on whole-plant hydraulic performance under future atmospheric CO₂ concentration..” Tree Physiology 30, no. 8 (August 2010): 1001–15. https://doi.org/10.1093/treephys/tpq054.
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  - Way, Danielle A., and Ram Oren. “Differential responses to changes in growth temperature between trees from different functional groups and biomes: a review and synthesis of data..” Tree Physiology 30, no. 6 (June 2010): 669–88. https://doi.org/10.1093/treephys/tpq015.
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  - Oishi, A Christopher, Ram Oren, Kimberly A. Novick, Sari Palmroth, and Gabriel G. Katul. “Interannual Invariability of Forest Evapotranspiration and Its Consequence to Water Flow Downstream.” Ecosystems. 13, no. 3 (April 2010): 421–36. https://doi.org/10.1007/s10021-010-9328-3.
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  - Xiao, J., Q. Zhuang, B. E. Law, J. Chen, D. D. Baldocchi, D. R. Cook, R. Oren, et al. “A continuous measure of gross primary production for the conterminous United States derived from MODIS and AmeriFlux data.” Remote Sensing of Environment 114, no. 3 (March 15, 2010): 576–91. https://doi.org/10.1016/j.rse.2009.10.013.
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  - Katul, Gabriel, Stefano Manzoni, Sari Palmroth, and Ram Oren. “A stomatal optimization theory to describe the effects of atmospheric CO2 on leaf photosynthesis and transpiration..” Annals of Botany 105, no. 3 (March 2010): 431–42. https://doi.org/10.1093/aob/mcp292.
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  - Way, D. A., S. L. Ladeau, H. R. McCarthy, J. S. Clark, R. Oren, A. C. Finzi, and R. B. Jackson. “Greater seed production in elevated CO2 is not accompanied by reduced seed quality in Pinus taeda L..” Global Change Biology 16, no. 3 (March 1, 2010): 1046–56. https://doi.org/10.1111/j.1365-2486.2009.02007.x.
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  - Yi, C., R. Li, J. Wolbeck, X. Xu, M. Nilsson, L. Aires, J. D. Albertson, et al. “Climate control of terrestrial carbon exchange across biomes and continents.” Environmental Research Letters 5, no. 3 (January 1, 2010). https://doi.org/10.1088/1748-9326/5/3/034007.
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  - Yuan, W., Y. Luo, A. D. Richardson, R. Oren, S. Luyssaert, I. A. Janssens, R. Ceulemans, et al. “Latitudinal patterns of magnitude and interannual variability in net ecosystem exchange regulated by biological and environmental variables.” Global Change Biology 15, no. 12 (December 1, 2009): 2905–20. https://doi.org/10.1111/j.1365-2486.2009.01870.x.
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  - Domec, Jean-Christophe, Sari Palmroth, Eric Ward, Chris A. Maier, M. Thérézien, and Ram Oren. “Acclimation of leaf hydraulic conductance and stomatal conductance of Pinus taeda (loblolly pine) to long-term growth in elevated CO(2) (free-air CO(2) enrichment) and N-fertilization..” Plant, Cell & Environment 32, no. 11 (November 2009): 1500–1512. https://doi.org/10.1111/j.1365-3040.2009.02014.x.
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  - Novick, K. A., R. Oren, P. C. Stoy, M. B. S. Siqueira, and G. G. Katul. “Nocturnal evapotranspiration in eddy-covariance records from three co-located ecosystems in the Southeastern U.S.: Implications for annual fluxes.” Agricultural and Forest Meteorology. 149, no. 9 (September 2009): 1491–1504. https://doi.org/10.1016/j.agrformet.2009.04.005.
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  - Katul, Gabriel G., Sari Palmroth, and Ram Oren. “Leaf stomatal responses to vapour pressure deficit under current and CO(2)-enriched atmosphere explained by the economics of gas exchange..” Plant, Cell & Environment 32, no. 8 (August 2009): 968–79. https://doi.org/10.1111/j.1365-3040.2009.01977.x.
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  - Daly, Edoardo, Sari Palmroth, Paul Stoy, Mario Siqueira, A Christopher Oishi, Jehn-Yih Juang, Ram Oren, Amilcare Porporato, and Gabriel G. Katul. “The effects of elevated atmospheric CO₂ and nitrogen amendments on subsurface CO₂ production and concentration dynamics in a maturing pine forest.” Biogeochemistry 94, no. 3 (July 2009): 271–87. https://doi.org/10.1007/s10533-009-9327-7.
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  - Novick, K., R. Oren, P. Stoy, J. Y. Juang, M. Siqueira, and G. Katul. “The relationship between reference canopy conductance and simplified hydraulic architecture.” Advances in Water Resources 32, no. 6 (June 1, 2009): 809–19. https://doi.org/10.1016/j.advwatres.2009.02.004.
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  - Franklin, O., R. E. McMurtrie, C. M. Iversen, K. Y. Crous, A. C. Finzi, D. T. Tissue, D. S. Ellsworth, R. Oren, and R. J. Norby. “Forest fine-root production and nitrogen use under elevated CO2: Contrasting responses in evergreen and deciduous trees explained by a common principle.” Global Change Biology 15, no. 1 (January 19, 2009): 132–44. https://doi.org/10.1111/j.1365-2486.2008.01710.x.
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  - Song, C., G. Katul, R. Oren, L. E. Band, C. L. Tague, P. C. Stoy, and H. R. McCarthy. “Energy, water, and carbon fluxes in a loblolly pine stand: Results from uniform and gappy canopy models with comparisons to eddy flux data.” Journal of Geophysical Research: Biogeosciences 114, no. 4 (January 1, 2009). https://doi.org/10.1029/2009JG000951.
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  - Ollinger, S. V., A. D. Richardson, M. E. Martin, D. Y. Hollinger, S. E. Frolking, P. B. Reich, L. C. Plourde, et al. “Canopy nitrogen, carbon assimilation, and albedo in temperate and boreal forests: Functional relations and potential climate feedbacks..” Proceedings of the National Academy of Sciences of the United States of America 105, no. 49 (December 3, 2008): 19336–41. https://doi.org/10.1073/pnas.0810021105.
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  - Oishi, A. C., R. Oren, and P. C. Stoy. “Estimating components of forest evapotranspiration: A footprint approach for scaling sap flux measurements.” Agricultural and Forest Meteorology 148, no. 11 (October 1, 2008): 1719–32. https://doi.org/10.1016/j.agrformet.2008.06.013.
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  - Xiao, J. I. N. G. F. E. N. G., Q. I. A. N. L. A. I. Zhuang, D. E. N. N. I. S. D. Baldocchi, B. E. V. E. R. L. Y. E. Law, A. N. D. R. E. W. D. Richardson, J. I. Q. U. A. N. Chen, R. A. M. Oren, et al. “Estimation of net ecosystem carbon exchange for the conterminous United States by combining MODIS and AmeriFlux data.” Agricultural and Forest Meteorology. 148, no. 11 (October 2008): 1827–47. https://doi.org/10.1016/j.agrformet.2008.06.015.
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  - Pritchard, S. G., A. E. Strand, M. L. Mccormack, M. A. Davis, and R. Oren. “Mycorrhizal and rhizomorph dynamics in a loblolly pine forest during 5 years of free-air-CO2-enrichment.” Global Change Biology 14, no. 6 (June 1, 2008): 1252–64. https://doi.org/10.1111/j.1365-2486.2008.01567.x.
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  - Stoy, P. C., G. G. Katul, M. B. S. Siqueira, J. Y. Juang, K. A. Novick, H. R. Mc Carthy, A. C. Oishi, and R. Oren. “Role of vegetation in determining carbon sequestration along ecological succession in the southeastern United States.” Global Change Biology 14, no. 6 (June 1, 2008): 1409–27. https://doi.org/10.1111/j.1365-2486.2008.01587.x.
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  - Kim, Hyun-Seok, Ram Oren, and Thomas M. Hinckley. “Actual and potential transpiration and carbon assimilation in an irrigated poplar plantation..” Tree Physiology 28, no. 4 (April 2008): 559–77. https://doi.org/10.1093/treephys/28.4.559.
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  - Oren, Ram, Kalevi Kull, and Asko Noormets. “Olevi Kull's lifetime contribution to ecology..” Tree Physiology 28, no. 4 (April 2008): 483–90. https://doi.org/10.1093/treephys/28.4.483.
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  - Ward, Eric J., Ram Oren, Bjarni D. Sigurdsson, Paul G. Jarvis, and Sune Linder. “Fertilization effects on mean stomatal conductance are mediated through changes in the hydraulic attributes of mature Norway spruce trees..” Tree Physiology 28, no. 4 (April 2008): 579–96. https://doi.org/10.1093/treephys/28.4.579.
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  - Pritchard, S. G., A. E. Strand, M. L. McCormack, M. A. Davis, A. C. Finzi, R. B. Jackson, R. Matamala, H. H. Rogers, and R. Oren. “Fine root dynamics in a loblolly pine forest are influenced by free-air-CO2-enrichment: A six-year-minirhizotron study.” Global Change Biology 14, no. 3 (March 1, 2008): 588–602. https://doi.org/10.1111/j.1365-2486.2007.01523.x.
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  - Strand, Allan E., Seth G. Pritchard, M Luke McCormack, Micheal A. Davis, and Ram Oren. “Irreconcilable differences: fine-root life spans and soil carbon persistence..” Science (New York, N.Y.) 319, no. 5862 (January 2008): 456–58. https://doi.org/10.1126/science.1151382.
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  - Katul, G., A. Porporato, and R. Oren. “Stochastic dynamics of plant-water interactions.” Annual Review of Ecology, Evolution, and Systematics 38 (December 1, 2007): 767–91. https://doi.org/10.1146/annurev.ecolsys.38.091206.095748.
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  - Mccarthy, H. R., R. Oren, A. C. Finzi, D. S. Ellsworth, H. S. Kim, K. H. Johnsen, and B. Millar. “Temporal dynamics and spatial variability in the enhancement of canopy leaf area under elevated atmospheric CO2.” Global Change Biology 13, no. 12 (December 1, 2007): 2479–97. https://doi.org/10.1111/j.1365-2486.2007.01455.x.
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  - Thérézien, Mathieu, Sari Palmroth, Rachael Brady, and Ram Oren. “Estimation of light interception properties of conifer shoots by an improved photographic method and a 3D model of shoot structure..” Tree Physiology 27, no. 10 (October 2007): 1375–87. https://doi.org/10.1093/treephys/27.10.1375.
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  - Finzi, Adrien C., Richard J. Norby, Carlo Calfapietra, Anne Gallet-Budynek, Birgit Gielen, William E. Holmes, Marcel R. Hoosbeek, et al. “Increases in nitrogen uptake rather than nitrogen-use efficiency support higher rates of temperate forest productivity under elevated CO2..” Proceedings of the National Academy of Sciences of the United States of America 104, no. 35 (August 20, 2007): 14014–19. https://doi.org/10.1073/pnas.0706518104.
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  - Stoy, Paul C., Sari Palmroth, A Christopher Oishi, Mario B. S. Siqueira, Jehn-Yih Juang, Kimberly A. Novick, Eric J. Ward, Gabriel G. Katul, and Ram Oren. “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, no. 6 (June 2007): 700–710. https://doi.org/10.1111/j.1365-3040.2007.01655.x.
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  - Ewers, B. E., R. Oren, H. S. Kim, G. Bohrer, and C. T. Lai. “Effects of hydraulic architecture and spatial variation in light on mean stomatal conductance of tree branches and crowns..” Plant, Cell & Environment 30, no. 4 (April 2007): 483–96. https://doi.org/10.1111/j.1365-3040.2007.01636.x.
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  - JUANG, J. E. H. N. -. Y. I. H., G. A. B. R. I. E. L. G. KATUL, A. M. I. L. C. A. R. E. PORPORATO, P. A. U. L. C. STOY, M. A. R. I. O. S. SIQUEIRA, M. A. T. T. E. O. DETTO, H. Y. U. N. -. S. E. O. K. KIM, and R. A. M. OREN. “Eco-hydrological controls on summertime convective rainfall triggers.” Global Change Biology. 13, no. 4 (April 2007): 887–96. https://doi.org/10.1111/j.1365-2486.2007.01315.x.
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  - Hyvönen, Riitta, Göran I. Agren, Sune Linder, Tryggve Persson, M Francesca Cotrufo, Alf Ekblad, Michael Freeman, et al. “The likely impact of elevated [CO2], nitrogen deposition, increased temperature and management on carbon sequestration in temperate and boreal forest ecosystems: a literature review..” The New Phytologist 173, no. 3 (January 2007): 463–80. https://doi.org/10.1111/j.1469-8137.2007.01967.x.
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  - McCarthy, Heather R., Ram Oren, Adrien C. Finzi, and Kurt H. Johnsen. “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, no. 51 (December 11, 2006): 19356–61. https://doi.org/10.1073/pnas.0609448103.
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  - Palmroth, Sari, Ram Oren, Heather R. McCarthy, Kurt H. Johnsen, Adrien C. Finzi, John R. Butnor, Michael G. Ryan, and William H. Schlesinger. “Aboveground sink strength in forests controls the allocation of carbon below ground and its [CO2]-induced enhancement..” Proceedings of the National Academy of Sciences of the United States of America 103, no. 51 (December 11, 2006): 19362–67. https://doi.org/10.1073/pnas.0609492103.
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  - Stoy, P. C., G. G. Katul, M. B. S. Siqueira, J. Y. Juang, K. A. Novick, J. M. Uebelherr, and R. Oren. “An evaluation of models for partitioning eddy covariance-measured net ecosystem exchange into photosynthesis and respiration.” Agricultural and Forest Meteorology. 141, no. 1 (December 2006): 2–18. https://doi.org/10.1016/j.agrformet.2006.09.001.
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  - STOY, P. A. U. L. C., G. A. B. R. I. E. L. G. KATUL, M. A. R. I. O. B. S. SIQUEIRA, J. E. H. N. -. Y. I. H. JUANG, K. I. M. B. E. R. L. Y. A. NOVICK, H. E. A. T. H. E. R. R. McCARTHY, A. CHRISTOPHER OISHI, J. O. S. H. U. A. M. UEBELHERR, H. Y. U. N. -. S. E. O. K. KIM, and R. A. M. OREN. “Separating the effects of climate and vegetation on evapotranspiration along a successional chronosequence in the southeastern US.” Global Change Biology. 12, no. 11 (November 2006): 2115–35. https://doi.org/10.1111/j.1365-2486.2006.01244.x.
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  - Jaksic, V., G. Kiely, J. Albertson, R. Oren, G. Katul, P. Leahy, and K. A. Byrne. “Net ecosystem exchange of grassland in contrasting wet and dry years.” Agricultural and Forest Meteorology. 139, no. 3–4 (October 2006): 323–34. https://doi.org/10.1016/j.agrformet.2006.07.009.
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  - McCarthy, H. R., R. Oren, H. S. Kim, K. H. Johnsen, C. Maier, S. G. Pritchard, and M. A. Davis. “Interaction of ice storms and management practices on current carbon sequestration in forests with potential mitigation under future CO<inf>2</inf> atmosphere.” Journal of Geophysical Research Atmospheres 111, no. 15 (August 16, 2006). https://doi.org/10.1029/2005JD006428.
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  - SIQUEIRA, M. B., G. G. KATUL, D. A. SAMPSON, P. C. STOY, J. -. Y. JUANG, H. R. MCCARTHY, and R. OREN. “Multiscale model intercomparisons of CO₂ and H₂O exchange rates in a maturing southeastern US pine forest.” Global Change Biology. 12, no. 7 (July 2006): 1189–1207. https://doi.org/10.1111/j.1365-2486.2006.01158.x.
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  - OREN, R. A. M., C. H. E. N. G. -. I. HSIEH, P. A. U. L. STOY, J. O. H. N. ALBERTSON, H. E. A. T. H. E. R. R. MCCARTHY, P. E. T. E. R. HARRELL, and G. A. B. R. I. E. L. G. KATUL. “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, no. 5 (May 2006): 883–96. https://doi.org/10.1111/j.1365-2486.2006.01131.x.
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  - Juang, J. Y., G. G. Katul, M. B. S. Siqueira, P. C. Stoy, S. Palmroth, H. R. McCarthy, H. S. Kim, and R. Oren. “Modeling nighttime ecosystem respiration from measured CO<inf>2</inf> concentration and air temperature profiles using inverse methods.” Journal of Geophysical Research Atmospheres 111, no. 8 (April 27, 2006). https://doi.org/10.1029/2005JD005976.
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  - Addington, R. N., L. A. Donovan, R. J. Mitchell, J. M. Vose, S. D. Pecot, S. B. Jack, U. G. Hacke, J. S. Sperry, and R. Oren. “Adjustments in hydraulic architecture of Pinus palustris maintain similar stomatal conductance in xeric and mesic habitats..” Plant, Cell & Environment 29, no. 4 (April 2006): 535–45. https://doi.org/10.1111/j.1365-3040.2005.01430.x.
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  - Chuang, Y. L., R. Oren, A. L. Bertozzi, N. Phillips, and G. G. Katul. “The porous media model for the hydraulic system of a conifer tree: Linking sap flux data to transpiration rate.” Ecological Modelling 191, no. 3–4 (February 5, 2006): 447–68. https://doi.org/10.1016/j.ecolmodel.2005.03.027.
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  - Williams, Claire G., Shannon L. LaDeau, Ram Oren, and Gabriel G. Katul. “Modeling seed dispersal distances: implications for transgenic Pinus taeda..” Ecological Applications : A Publication of the Ecological Society of America 16, no. 1 (February 2006): 117–24. https://doi.org/10.1890/04-1901.
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  - Finzi, Adrien C., David J. P. Moore, Evan H. DeLucia, John Lichter, Kirsten S. Hofmockel, Robert B. Jackson, Hyun-Seok Kim, et al. “Progressive nitrogen limitation of ecosystem processes under elevated CO2 in a warm-temperate forest..” Ecology 87, no. 1 (January 2006): 15–25. https://doi.org/10.1890/04-1748.
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  - Juang, Jehn-Yih, Gabriel G. Katul, Mario B. S. Siqueira, Paul C. Stoy, Sari Palmroth, Heather R. McCarthy, Hyun-Seok Kim, and Ram Oren. “Modeling nighttime ecosystem respiration from measured CO2concentration and air temperature profiles using inverse methods.” Journal of Geophysical Research 111, no. D8 (2006). https://doi.org/10.1029/2005jd005976.
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  - Norby, Richard J., Evan H. Delucia, Birgit Gielen, Carlo Calfapietra, Christian P. Giardina, John S. King, Joanne Ledford, et al. “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, no. 50 (December 5, 2005): 18052–56. https://doi.org/10.1073/pnas.0509478102.
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  - Bohrer, G., H. Mourad, T. A. Laursen, D. Drewry, R. Avissar, D. Poggi, R. Oren, and G. G. Katul. “Finite element tree crown hydrodynamics model (FETCH) using porous media flow within branching elements: A new representation of tree hydrodynamics.” Water Resources Research 41, no. 11 (November 1, 2005): 1–17. https://doi.org/10.1029/2005WR004181.
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  - Stoy, Paul C., Gabriel G. Katul, Mario B. S. Siqueira, Jehn-Yih Juang, Heather R. McCarthy, Hyun-Seok Kim, A Christopher Oishi, and Ram Oren. “Variability in net ecosystem exchange from hourly to inter-annual time scales at adjacent pine and hardwood forests: a wavelet analysis..” Tree Physiology 25, no. 7 (July 2005): 887–902. https://doi.org/10.1093/treephys/25.7.887.
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  - Palmroth, S., C. A. Maier, H. R. McCarthy, A. C. Oishi, H. S. Kim, K. H. Johnsen, G. G. Katul, and R. Oren. “Contrasting responses to drought of forest floor CO₂ efflux in a loblolly pine plantation and a nearby oak-hickory forest.” Global Change Biology. 11, no. 3 (March 2005): 421–34. https://doi.org/10.1111/j.1365-2486.2005.00915.x.
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  - Mortazavi, Behzad, Jeffrey P. Chanton, James L. Prater, A Christopher Oishi, Ram Oren, and Gabriel Katul. “Temporal variability in (13)C of respired CO(2) in a pine and a hardwood forest subject to similar climatic conditions..” Oecologia 142, no. 1 (January 2005): 57–69. https://doi.org/10.1007/s00442-004-1692-2.
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  - Phillips, Nathan G., Ram Oren, Julian Licata, and Sune Linder. “Time series diagnosis of tree hydraulic characteristics..” Tree Physiology 24, no. 8 (August 2004): 879–90. https://doi.org/10.1093/treephys/24.8.879.
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  - Suwa, M., G. G. Katul, R. Oren, J. Andrews, J. Pippen, A. Mace, and W. H. Schlesinger. “Impact of elevated atmospheric CO 2 on forest floor respiration in a temperate pine forest.” Global Biogeochemical Cycles 18, no. 2 (June 1, 2004). https://doi.org/10.1029/2003GB002182.
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  - Addington, Robert N., Robert J. Mitchell, Ram Oren, and Lisa A. Donovan. “Stomatal sensitivity to vapor pressure deficit and its relationship to hydraulic conductance in Pinus palustris..” Tree Physiology 24, no. 5 (May 2004): 561–69. https://doi.org/10.1093/treephys/24.5.561.
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  - Luo, Y., B. Su, W. S. Currie, J. S. Dukes, A. Finzi, U. Hartwig, B. Hungate, et al. “Progressive nitrogen limitation of ecosystem responses to rising atmospheric carbon dioxide.” Bioscience 54, no. 8 (January 1, 2004): 731–39. https://doi.org/10.1641/0006-3568(2004)054[0731:PNLOER]2.0.CO;2.
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  - Novick, K. A., P. C. Stoy, G. G. Katul, D. S. Ellsworth, M. B. S. Siqueira, J. Juang, and R. Oren. “Carbon dioxide and water vapor exchange in a warm temperate grassland..” Oecologia 138, no. 2 (January 2004): 259–74. https://doi.org/10.1007/s00442-003-1388-z.
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  - Schäfer, K. V. R., R. Oren, D. S. Ellsworth, C. T. Lai, J. D. Herrick, A. C. Finzi, D. D. Richter, and G. G. Katul. “Exposure to an enriched CO2 atmosphere alters carbon assimilation and allocation in a pine forest ecosystem.” Global Change Biology 9, no. 10 (October 1, 2003): 1378–1400. https://doi.org/10.1046/j.1365-2486.2003.00662.x.
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  - Butnor, J. R., K. H. Johnsen, R. Oren, and G. G. Katul. “Reduction of forest floor respiration by fertilization on both carbon dioxide-enriched and reference 17-year-old loblolly pine stands.” Global Change Biology 9, no. 6 (June 1, 2003): 849–61. https://doi.org/10.1046/j.1365-2486.2003.00630.x.
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  - Katul, G., R. Leuning, and R. Oren. “Relationship between plant hydraulic and biochemical properties derived from a steady-state coupled water and carbon transport model.” Plant, Cell and Environment 26, no. 3 (March 1, 2003): 339–50. https://doi.org/10.1046/j.1365-3040.2003.00965.x.
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  - Pataki, D. E., and R. Oren. “Species differences in stomatal control of water loss at the canopy scale in a mature bottomland deciduous forest.” Advances in Water Resources 26, no. 12 (January 1, 2003): 1267–78. https://doi.org/10.1016/j.advwatres.2003.08.001.
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  - Schäfer, K. V. R., R. Oren, C. T. Lai, and G. G. Katul. “Hydrologic balance in an intact temperate forest ecosystem under ambient and elevated atmospheric CO2 concentration.” Global Change Biology 8, no. 9 (September 11, 2002): 895–911. https://doi.org/10.1046/j.1365-2486.2002.00513.x.
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  - Lai, C. T., G. Katul, J. Butnor, M. Siqueira, D. Ellsworth, C. Maier, K. Johnsen, S. Mckeand, and R. Oren. “Modelling the limits on the response of net carbon exchange to fertilization in a south-eastern pine forest.” Plant, Cell and Environment 25, no. 9 (September 1, 2002): 1095–1119. https://doi.org/10.1046/j.1365-3040.2002.00896.x.
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  - Nathan, Ran, Gabriel G. Katul, Henry S. Horn, Suvi M. Thomas, Ram Oren, Roni Avissar, Stephen W. Pacala, and Simon A. Levin. “Mechanisms of long-distance dispersal of seeds by wind..” Nature 418, no. 6896 (July 2002): 409–13. https://doi.org/10.1038/nature00844.
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  - Lai, C. T., G. Katul, J. Butnor, D. Ellsworth, and R. Oren. “Modelling night-time ecosystem respiration by a constrained source optimization method.” Global Change Biology 8, no. 2 (March 7, 2002): 124–41. https://doi.org/10.1046/j.1354-1013.2001.00447.x.
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  - Sperry, J. S., U. G. Hacke, R. Oren, and J. P. Comstock. “Water deficits and hydraulic limits to leaf water supply..” Plant, Cell & Environment 25, no. 2 (February 2002): 251–63. https://doi.org/10.1046/j.0016-8025.2001.00799.x.
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  - Katul, G., C. T. Lai, K. Schäfer, B. Vidakovic, J. Albertson, D. Ellsworth, and R. Oren. “Multiscale analysis of vegetation surface fluxes: From seconds to years.” Advances in Water Resources 24, no. 9–10 (November 1, 2001): 1119–32. https://doi.org/10.1016/S0309-1708(01)00029-X.
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  - Ewers, B. E., R. Oren, N. Phillips, M. Strömgren, and S. Linder. “Mean canopy stomatal conductance responses to water and nutrient availabilities in Picea abies and Pinus taeda..” Tree Physiology 21, no. 12–13 (August 2001): 841–50. https://doi.org/10.1093/treephys/21.12-13.841.
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  - Phillips, N., J. Bergh, R. Oren, and S. Linder. “Effects of nutrition and soil water availability on water use in a Norway spruce stand..” Tree Physiology 21, no. 12–13 (August 2001): 851–60. https://doi.org/10.1093/treephys/21.12-13.851.
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  - Johnsen, K. H., D. Wear, R. Oren, R. O. Teskey, F. Sanchez, R. Will, J. Butnor, et al. “Carbon sequestration and southern pine forests (vol 99, pg 14, 2001).” Journal of Forestry 99, no. 6 (June 1, 2001): 56–56.
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  - Oren, R., D. S. Ellsworth, K. H. Johnsen, N. Phillips, B. E. Ewers, C. Maier, K. V. Schäfer, et al. “Soil fertility limits carbon sequestration by forest ecosystems in a CO2-enriched atmosphere..” Nature 411, no. 6836 (May 2001): 469–72. https://doi.org/10.1038/35078064.
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  - Oren, Ram, and Diane E. Pataki. “Transpiration in response to variation in microclimate and soil moisture in southeastern deciduous forests..” Oecologia 127, no. 4 (May 2001): 549–59. https://doi.org/10.1007/s004420000622.
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  - Schulze, W., E. D. Schulze, I. Schulze, and R. Oren. “Quantification of insect nitrogen utilization by the venus fly trap Dionaea muscipula catching prey with highly variable isotope signatures..” Journal of Experimental Botany 52, no. 358 (May 2001): 1041–49. https://doi.org/10.1093/jexbot/52.358.1041.
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  - Ewers, B. E., R. Oren, K. H. Johnsen, and J. J. Landsberg. “Estimating maximum mean canopy stomatal conductance for use in models.” Canadian Journal of Forest Research 31, no. 2 (April 17, 2001): 198–207. https://doi.org/10.1139/cjfr-31-2-198.
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  - Johnsen, K. H., D. Wear, R. Oren, R. O. Teskey, F. Sanchez, R. Will, J. Butnor, et al. “Carbon sequestration and southern pine forests.” Journal of Forestry 99, no. 4 (April 1, 2001): 14–21.
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  - Johnsen, K. H., D. Wear, R. Oren, R. O. Teskey, F. Sanchez, R. Will, J. Butnor, et al. “Meeting Global Policy Commitments: Carbon Sequestration and Southern Pine Forests.” Journal of Forestry 99, no. 4 (April 1, 2001): 14–21.
  - Katul, G. G., C. T. Lai, J. D. Albertson, B. Vidakovic, K. V. R. Schäfer, C. I. Hsieh, and R. Oren. “Quantifying the complexity in mapping energy inputs and hydrologic state variables into land-surface fluxes.” Geophysical Research Letters 28, no. 17 (January 1, 2001): 3305–7. https://doi.org/10.1029/2000GL012154.
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  - Metzger, J. M., and R. Oren. “The effect of crown dimensions on transparency and the assessment of tree health.” Ecological Applications 11, no. 6 (January 1, 2001): 1634–40. https://doi.org/10.1890/1051-0761(2001)011[1634:TEOCDO]2.0.CO;2.
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  - Oren, R., J. S. Sperry, B. E. Ewers, D. E. Pataki, N. Phillips, and J. P. Megonigal. “Sensitivity of mean canopy stomatal conductance to vapor pressure deficit in a flooded Taxodium distichum L. forest: hydraulic and non-hydraulic effects..” Oecologia 126, no. 1 (January 2001): 21–29. https://doi.org/10.1007/s004420000497.
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  - Phillips, N., and R. Oren. “Intra- and inter-annual variation in transpiration of a pine forest.” Ecological Applications 11, no. 2 (January 1, 2001): 385–96. https://doi.org/10.1890/1051-0761(2001)011[0385:IAIAVI]2.0.CO;2.
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  - Lai, C. T., G. Katul, R. Oren, D. Ellsworth, and K. Schäfer. “Modeling CO2 and water vapor turbulent flux distributions within a forest canopy.” Journal of Geophysical Research Atmospheres 105, no. D21 (November 16, 2000): 26333–51. https://doi.org/10.1029/2000JD900468.
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  - Ewers, B. E., R. Oren, and J. S. Sperry. “Influence of nutrient versus water supply on hydraulic architecture and water balance in Pinus taeda.” Plant, Cell and Environment 23, no. 10 (October 21, 2000): 1055–66. https://doi.org/10.1046/j.1365-3040.2000.00625.x.
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  - Hacke, U. G., J. S. Sperry, B. E. Ewers, D. S. Ellsworth, K. V. R. Schäfer, and R. Oren. “Influence of soil porosity on water use in Pinus taeda..” Oecologia 124, no. 4 (September 2000): 495–505. https://doi.org/10.1007/pl00008875.
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  - Ewers, Brent E., and Ram Oren. “Analyses of assumptions and errors in the calculation of stomatal conductance from sap flux measurements..” Tree Physiology 20, no. 9 (May 2000): 579–89. https://doi.org/10.1093/treephys/20.9.579.
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  - Lai, C. T., G. Katul, D. Ellsworth, and R. Oren. “Modelling vegetation-atmosphere CO2 exchange by a coupled Eulerian-Langrangian approach.” Boundary Layer Meteorology 95, no. 1 (January 1, 2000): 91–122. https://doi.org/10.1023/A:1002473906184.
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  - Pataki, D. E., R. Oren, and W. K. Smith. “Sap flux of co-occurring species in a western subalpine forest during seasonal soil drought.” Ecology 81, no. 9 (January 1, 2000): 2557–66. https://doi.org/10.1890/0012-9658(2000)081[2557:SFOCOS]2.0.CO;2.
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  - Schäfer, K. V. R., R. Oren, and J. D. Tenhunen. “The effect of tree height on crown level stomatal conductance.” Plant, Cell and Environment 23, no. 4 (January 1, 2000): 365–75. https://doi.org/10.1046/j.1365-3040.2000.00553.x.
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  - Katul, G., C. I. Hsieh, D. Bowling, K. Clark, N. Shurpali, A. Turnipseed, J. Albertson, et al. “Spatial variability of turbulent fluxes in the roughness sublayer of an even-aged pine forest.” Boundary Layer Meteorology 93, no. 1 (December 1, 1999): 1–28. https://doi.org/10.1023/A:1002079602069.
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  - Oren, R., J. S. Sperry, G. G. Katul, D. E. Pataki, B. E. Ewers, N. Phillips, and K. V. R. Schäfer. “Survey and synthesis of intra- and interspecific variation in stomatal sensitivity to vapour pressure deficit.” Plant, Cell and Environment 22, no. 12 (December 1, 1999): 1515–26. https://doi.org/10.1046/j.1365-3040.1999.00513.x.
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  - Phillips, N., R. Oren, R. Zimmermann, and S. J. Wright. “Temporal patterns of water flux in trees and lianas in a Panamanian moist forest.” Trees Structure and Function 14, no. 3 (November 1, 1999): 116–23.
  - Oren, R., N. Phillips, B. E. Ewers, D. E. Pataki, and J. P. Megonigal. “Sap-flux-scaled transpiration responses to light, vapor pressure deficit, and leaf area reduction in a flooded Taxodium distichum forest..” Tree Physiology 19, no. 6 (May 1999): 337–47. https://doi.org/10.1093/treephys/19.6.337.
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  - Ewers, B. E., R. Oren, T. J. Albaugh, and P. M. Dougherty. “Carry-over effects of water and nutrient supply on water use of Pinus taeda.” Ecological Applications 9, no. 2 (January 1, 1999): 513–25. https://doi.org/10.1890/1051-0761(1999)009[0513:COEOWA]2.0.CO;2.
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  - Pataki, Diane E., Ram Oren, and David T. Tissue. “Elevated carbon dioxide does not affect average canopy stomatal conductance of Pinus taeda L..” Oecologia 117, no. 1–2 (November 1998): 47–52. https://doi.org/10.1007/s004420050630.
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  - Pataki, D. E., R. Oren, G. Katul, and J. Sigmon. “Canopy conductance of Pinus taeda, Liquidambar styraciflua and Quercus phellos under varying atmospheric and soil water conditions..” Tree Physiology 18, no. 5 (May 1998): 307–15. https://doi.org/10.1093/treephys/18.5.307.
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  - Oren, R., B. E. Ewers, P. Todd, N. Phillips, and G. Katul. “Water balance delineates the soil layer in which moisture affects canopy conductance.” Ecological Applications 8, no. 4 (January 1, 1998): 990–1002. https://doi.org/10.1890/1051-0761(1998)008[0990:WBDTSL]2.0.CO;2.
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  - Oren, R., N. Phillips, G. Katul, B. E. Ewers, and D. E. Pataki. “Scaling xylem sap flux and soil water balance and calculating variance: A method for partitioning water flux in forests.” Annales Des Sciences Forestieres 55, no. 1–2 (January 1, 1998): 191–216. https://doi.org/10.1051/forest:19980112.
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  - Pataki, D. E., R. Oren, and N. Phillips. “Responses of sap flux and stomatal conductance of Pinus taeda L. trees to stepwise reductions in leaf area.” Journal of Experimental Botany 49, no. 322 (January 1, 1998): 871–78. https://doi.org/10.1093/jxb/49.322.871.
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  - Phillips, N., and R. Oren. “A comparison of 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, no. 1–2 (January 1, 1998): 217–35. https://doi.org/10.1051/forest:19980113.
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  - Hogg, E. H., T. A. Black, G. Den Hartog, H. H. Neumann, R. Zimmermann, P. A. Hurdle, P. D. Blanken, et al. “A comparison of sap flow and eddy fluxes of water vapor from a boreal deciduous forest.” Journal of Geophysical Research Atmospheres 102, no. 24 (December 26, 1997): 28929–37.
  - Hogg, Edward H., T Andrew Black, Gerry den Hartog, Harold H. Neumann, Reiner Zimmermann, Patrick A. Hurdle, Peter D. Blanken, et al. “A comparison of sap flow and eddy fluxes of water vapor from a boreal deciduous forest.” Journal of Geophysical Research: Atmospheres 102, no. D24 (December 26, 1997): 28929–37. https://doi.org/10.1029/96jd03881.
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  - Way, J. B., R. Zimmermann, E. Rignot, K. McDonald, and R. Oren. “Winter and spring thaw as observed with imaging radar at BOREAS.” Journal of Geophysical Research Atmospheres 102, no. 24 (December 26, 1997): 29673–84.
  - Way, JoBea, Reiner Zimmermann, Eric Rignot, Kyle McDonald, and Ram Oren. “Winter and spring thaw as observed with imaging radar at BOREAS.” Journal of Geophysical Research: Atmospheres 102, no. D24 (December 26, 1997): 29673–84. https://doi.org/10.1029/96jd03878.
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  - Phillips, N., A. Nagchaudhuri, R. Oren, and G. Katul. “Time constant for water transport in loblolly pine trees estimated from time series of evaporative demand and stem sapflow.” Trees Structure and Function 11, no. 7 (August 1, 1997): 412–19. https://doi.org/10.1007/s004680050102.
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  - Katul, G., R. Oren, D. Ellsworth, C. I. Hsieh, N. Phillips, and K. Lewin. “Lagrangian dispersion model for predicting CO<inf>2</inf> sources, sinks, and fluxes in a uniform loblolly pine (Pinus taeda L.) stand.” Journal of Geophysical Research Atmospheres 102, no. 8 (April 27, 1997): 9309–21.
  - Katul, Gabriel, Ram Oren, David Ellsworth, Cheng-I Hsieh, Nathan Phillips, and Keith Lewin. “A Lagrangian dispersion model for predicting CO2sources, sinks, and fluxes in a uniform loblolly pine (Pinus taeda L.) stand.” Journal of Geophysical Research: Atmospheres 102, no. D8 (April 27, 1997): 9309–21. https://doi.org/10.1029/96jd03785.
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  - Katul, G., P. Todd, D. Pataki, Z. J. Kabala, and R. Oren. “Soil water depletion by oak trees and the influence of root water uptake on the moisture content spatial statistics.” Water Resources Research 33, no. 4 (January 1, 1997): 611–23. https://doi.org/10.1029/96WR03978.
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  - Katul, G., C. I. Hsieh, R. Oren, D. Ellsworth, and N. Phillips. “Latent and sensible heat flux predictions from a uniform pine forest using surface renewal and flux variance methods.” Boundary Layer Meteorology 80, no. 1–2 (December 1, 1996): 249–82.
  - Katul, Gabriel, Cheng-I Hsieh, Ram Oren, David Ellsworth, and Nathan Phillips. “Latent and sensible heat flux predictions from a uniform pine forest using surface renewal and flux variance methods.” Boundary Layer Meteorology 80, no. 3 (August 1996): 249–82. https://doi.org/10.1007/bf00119545.
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  - Ellsworth, David S., Ram Oren, Ce Huang, Nathan Phillips, and George R. Hendrey. “Leaf and canopy responses to elevated CO2 in a pine forest under free-air CO2 enrichment..” Oecologia 106, no. 3 (May 1996). https://doi.org/10.1007/bf00334570.
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  - Oren, Ram, Reiner Zimmermann, and John Terbough. “Transpiration in Upper Amazonia Floodplain and Upland Forests in Response to Drought-Breaking Rains.” Ecology 77, no. 3 (April 1996): 968–73. https://doi.org/10.2307/2265517.
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  - Ellsworth, D. S., R. Oren, C. Huang, N. Phillips, and G. R. Hendrey. “Erratum: Leaf and canopy responses to elevated CO 2 in a pine forest under free-air CO 2 enrichment (Oecologia (1995) 104 (139-146)).” Oecologia 106, no. 3 (January 1, 1996).
  - Phillips, N., R. Oren, and R. Zimmermann. “Radial patterns of xylem sap flow in non-, diffuse- and ring-porous tree species.” Plant, Cell and Environment 19, no. 8 (January 1, 1996): 983–90. https://doi.org/10.1111/j.1365-3040.1996.tb00463.x.
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  - WARING, R. H., J. B. WAY, E. R. HUNT, L. MORRISSEY, K. J. RANSON, J. F. WEISHAMPEL, R. OREN, and S. E. FRANKLIN. “BIOLOGISTS TOOLBOX - IMAGING RADAR FOR ECOSYSTEM STUDIES.” Bioscience 45, no. 10 (November 1, 1995): 715–23. https://doi.org/10.2307/1312677.
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  - Ellsworth, David S., Ram Oren, Ce Huang, Nathan Phillips, and George R. Hendrey. “Leaf and canopy responses to elevated CO2 in a pine forest under free-air CO2 enrichment..” Oecologia 104, no. 2 (October 1995): 139–46. https://doi.org/10.1007/bf00328578.
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  - Buchmann, N., R. Oren, and R. Zimmermann. “Response of magnesium-deficient saplings in a young, open stand of Picea abies (L.) Karst. to elevated soil magnesium, nitrogen and carbon..” Environmental Pollution (Barking, Essex : 1987) 87, no. 1 (January 1995): 31–43. https://doi.org/10.1016/s0269-7491(99)80005-0.
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  - McDonald, K. C., R. Zimmermann, R. Oren, and J. B. Way. “Dielectric and hydraulic response of selected forest canopies at the boreas test sites in Canada.” International Geoscience and Remote Sensing Symposium (Igarss) 2 (January 1, 1995): 1204–6.
  - Waring, R. H., J. Way, E. R. Hunt, L. Morrissey, K. J. Ranson, J. F. Weishampel, R. Oren, and S. E. Franklin. “Imaging radar for ecosystem studies.” Bioscience 45, no. 10 (January 1, 1995): 715–23. https://doi.org/10.2307/1312677.
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  - Zimmermann, R., K. McDonald, R. Oren, and J. B. Way. “Xylem dielectric constant, water status, and transpiration of young Jack Pine (Pinus banksiana Lamb.) in the southern boreal zone of Canada.” International Geoscience and Remote Sensing Symposium (Igarss) 2 (January 1, 1995): 1006–8.
  - Zimmermann, R., K. McDonald, J. B. Way, and R. Oren. “Microclimate, water potential, transpiration, and bole dielectric constant of coniferous and deciduous tree species in the continental boreal ecotone of central Alaska.” International Geoscience and Remote Sensing Symposium (Igarss) 1 (December 1, 1994): 226–28.
  - Berger, A., R. Oren, and E. D. Schulze. “Element concentrations in the xylem sap of Picea abies (L.) Karst. seedlings extracted by various methods under different environmental conditions.” Tree Physiology 14, no. 2 (January 1, 1994): 111–28. https://doi.org/10.1093/treephys/14.2.111.
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  - Way, J., E. J. M. Rignot, K. C. McDonald, R. Oren, and R. Kwok. “Evaluating the Type and State of Alaska Taiga Forests with Imaging Radar for Use in Ecosystem Models.” Ieee Transactions on Geoscience and Remote Sensing 32, no. 2 (January 1, 1994): 353–70. https://doi.org/10.1109/36.295050.
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  - McDonald, K. C., R. Zimmermann, R. Oren, and J. B. Way. “Hydrologic and dielectric properties of woody plant tissue: Implications for remote sensing of canopy water status.” International Geoscience and Remote Sensing Symposium (Igarss) 4 (December 1, 1993).
  - Oren, R., K. S. Werk, N. Buchmann, and R. Zimmermann. “Chlorophyll-nutrient relationships identify nutritionally caused decline in Picea abies stands.” Canadian Journal of Forest Research 23, no. 6 (January 1, 1993): 1187–95. https://doi.org/10.1139/x93-150.
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  - Buchmann, N., R. Oren, G. Gebauer, P. Dietrich, and E. -. D. Schulze. “The use of stable isotopes in ecosystem research. First results of a field study with 15N.” Isotopenpraxis Isotopes in Environmental and Health Studies 28, no. 1 (September 1992): 51–59. https://doi.org/10.1080/00211919208050821.
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  - Katz, C., R. Oren, E. D. Schulze, and J. A. Milburn. “Uptake of water and solutes through twigs of Picea abies (L.) Karst.” Trees 3, no. 1 (May 1, 1989): 33–37. https://doi.org/10.1007/BF00202398.
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  - Oren, R., K. S. Werk, E. D. Schulze, J. Meyer, B. U. Schneider, and P. Schramel. “Performance of two Picea abies (L.) Karst. stands at different stages of decline - VI. Nutrient concentrations.” Oecologia 78, no. 4 (March 1, 1989). https://doi.org/10.1007/BF00378750.
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  - Oren, R., E. -. D. Schulze, K. S. Werk, and J. Meyer. “Performance of two Picea abies (L.) Karst. stands at different stages of decline : VII. Nutrient relations and growth..” Oecologia 77, no. 2 (November 1988): 163–73. https://doi.org/10.1007/bf00379182.
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  - Oren, R., K. S. Werk, E. -. D. Schulze, J. Meyer, B. U. Schneider, and P. Schramel. “Performance of two Picea abies (L.) Karst. stands at different stages of decline : VI. Nutrient concentration..” Oecologia 77, no. 2 (November 1988): 151–62. https://doi.org/10.1007/bf00379181.
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  - Meyer, J., B. U. Schneider, K. Werk, R. Oren, and E. D. Schulze. “Performance of two Picea abies (L.) Karst. stands at different stages of decline - V. Root tip and ectomycorrhiza development and their relations to above ground and soil nutrients.” Oecologia 77, no. 1 (October 1, 1988): 7–13. https://doi.org/10.1007/BF00380917.
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  - Osonubi, O., R. Oren, K. S. Werk, E. D. Schulze, and H. Heilmeier. “Performance of two Picea abies (L.) Karst. stands at different stages of decline - IV. Xylem sap concentrations of magnesium, calcium, potassium and nitrogen.” Oecologia 77, no. 1 (October 1, 1988): 1–6. https://doi.org/10.1007/BF00380916.
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  - Werk, K. S., R. Oren, E. D. Schulze, R. Zimmermann, and J. Meyer. “Performance of two Picea abies (L.) Karst. stands at different stages of decline - III. Canopy transpiration of green trees.” Oecologia 76, no. 4 (September 1, 1988): 519–24. https://doi.org/10.1007/BF00397863.
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  - Zimmermann, R., R. Oren, E. D. Schulze, and K. S. Werk. “Performance of two Picea abies (L.) Karst. stands at different stages of decline - II. Photosynthesis and leaf conductance.” Oecologia 76, no. 4 (September 1, 1988): 513–18. https://doi.org/10.1007/BF00397862.
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  - Oren, R., E. -. D. Schulze, K. S. Werk, J. Meyer, B. U. Schneider, and H. Heilmeier. “Performance of two Picea abies (L.) Karst. stands at different stages of decline : I. Carbon relations and stand growth..” Oecologia 75, no. 1 (February 1988): 25–37. https://doi.org/10.1007/bf00378810.
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  - Steudle, Ernst, Ram Oren, and Ernst-Detlef Schulze. “Water Transport in Maize Roots.” Plant Physiology 84, no. 4 (August 1, 1987): 1220–32. https://doi.org/10.1104/pp.84.4.1220.
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  - OREN, R., R. H. WARING, S. G. STAFFORD, and J. W. BARRETT. “24 YEARS OF PONDEROSA PINE GROWTH IN RELATION TO CANOPY LEAF-AREA AND UNDERSTORY COMPETITION.” Forest Science 33, no. 2 (June 1, 1987): 538–47.
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  - Oren, R., R. H. Waring, S. G. Stafford, and J. W. Barrett. “Twenty-four years of ponderosa pine growth in relation to canopy leaf area and understory competition..” Forest Science 33, no. 2 (January 1, 1987): 538–47.
  - Oren, R., E. D. Schulze, R. Matyssek, and R. Zimmermann. “Estimating photosynthetic rate and annual carbon gain in conifers from specific leaf weight and leaf biomass.” Oecologia 70, no. 2 (September 1, 1986): 187–93. https://doi.org/10.1007/BF00379238.
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  - Oren, R., K. S. Werk, and E. D. Schulze. “Relationships between foliage and conducting xylem in Picea abies (L.) Karst..” Trees 1, no. 1 (March 1, 1986): 61–69. https://doi.org/10.1007/BF00197026.
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  - Oren, Ram, Walter G. Thies, and Richard H. Waring. “Tree vigor and stand growth of Douglas-fir as influenced by laminated root rot.” Canadian Journal of Forest Research 15, no. 5 (October 1985): 985–88. https://doi.org/10.1139/x85-156.
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  - Larsson, S., R. Oren, R. H. Waring, and J. W. Barrett. “Attacks of mountain pine beetle as related to tree vigor of ponderosa pine..” Forest Science 29, no. 2 (January 1, 1983): 395–402.
  - Waring, R. H., P. E. Schroeder, and R. Oren. “Application of the pipe model theory to predict canopy leaf area..” Canadian Journal of Forest Research 12, no. 3 (January 1, 1982): 556–60. https://doi.org/10.1139/x82-086.
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- Book Sections
  - Luxmoore, R. J., R. Oren, D. W. Sheriff, and R. B. Thomas. “Source-Sink-Storage Relationships of Conifers.” In Resource Physiology of Conifers: Acquisition, Allocation, and Utilization, 179–216, 2013. https://doi.org/10.1016/B978-0-08-092591-2.50011-X.
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  - Margolis, H., R. Oren, D. Whitehead, and M. R. Kaufmann. “Leaf Area Dynamics of Conifer Forests.” In Ecophysiology of Coniferous Forests, 181–223, 2013. https://doi.org/10.1016/B978-0-08-092593-6.50012-8.
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  - Matyssek, R., P. Reich, R. Oren, and W. E. Winner. “Response Mechanisms of Conifers to Air Pollutants.” In Ecophysiology of Coniferous Forests, 255–308, 2013. https://doi.org/10.1016/B978-0-08-092593-6.50014-1.
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  - Oren, R., and D. W. Sheriff. “Water and Nutrient Acquisition by Roots and Canopies.” In Resource Physiology of Conifers: Acquisition, Allocation, and Utilization, 39–74, 2013. https://doi.org/10.1016/B978-0-08-092591-2.50007-8.
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- Conference Papers
  - McDonald, K. C., R. Zimmerman, J. Way, and R. Oren. “An investigation of the relationship between tree water potential and dielectric constant.” In International Geoscience and Remote Sensing Symposium (Igarss), 1:523–25, 1992. https://doi.org/10.1109/IGARSS.1992.576758.
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Teaching & Mentoring
Recent Courses
- ENVIRON 393: Research Independent Study 2019
- ENVIRON 503: Forest Ecosystems 2019
- ENVIRON 593: Independent Studies and Projects 2019
- ENVIRON 898: Program Area Seminar 2019
- ENVIRON 899: Master's Project 2019

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