World's Best Scientists 2026 revealed!
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Plant Science and Agronomy
USA
2026

D-Index & Metrics

Plant Science and Agronomy

D-Index
110
Citations
37441
World Ranking
95
National Ranking
32

Research.com Recognitions

  • 2026 - Research.com Plant Science and Agronomy in United States Leader Award
  • 2022 - Research.com Plant Science and Agronomy in United States Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Botany
  • Ecosystem

Ram Oren mainly focuses on Transpiration, Ecosystem, Ecology, Atmospheric sciences and Stomatal conductance. His Transpiration research includes elements of Hydrology, Water content, Soil water and Liquidambar styraciflua. His Ecosystem research incorporates elements of Biomass, Vegetation and Nitrogen cycle.

His study explores the link between Ecology and topics such as Carbon sequestration that cross with problems in Earth science, Carbon dioxide in Earth's atmosphere and Biogeochemistry. His Atmospheric sciences research is multidisciplinary, incorporating elements of Eddy covariance, Evapotranspiration and Climate model. His study looks at the intersection of Stomatal conductance and topics like Canopy with Deciduous.

His most cited work include:

  • Progressive Nitrogen Limitation of Ecosystem Responses to Rising Atmospheric Carbon Dioxide (956 citations)
  • Soil fertility limits carbon sequestration by forest ecosystems in a CO 2 -enriched atmosphere (890 citations)
  • Survey and synthesis of intra‐ and interspecific variation in stomatal sensitivity to vapour pressure deficit (803 citations)

What are the main themes of his work throughout his whole career to date?

Ram Oren spends much of his time researching Transpiration, Canopy, Atmospheric sciences, Botany and Agronomy. He combines subjects such as Hydrology, Evapotranspiration, Water content and Water-use efficiency with his study of Transpiration. His research investigates the connection between Canopy and topics such as Leaf area index that intersect with problems in Interception.

His study on Atmospheric sciences also encompasses disciplines like

  • Eddy covariance which is related to area like Latent heat,
  • Ecosystem which intersects with area such as Biomass and Nitrogen cycle. The various areas that Ram Oren examines in his Botany study include Carbon dioxide and Horticulture. His work deals with themes such as Ecology, Soil water and Primary production, which intersect with Agronomy.

He most often published in these fields:

  • Transpiration (36.78%)
  • Canopy (34.35%)
  • Atmospheric sciences (33.43%)

What were the highlights of his more recent work (between 2017-2021)?

  • Evapotranspiration (19.45%)
  • Atmospheric sciences (33.43%)
  • Agronomy (37.39%)

In recent papers he was focusing on the following fields of study:

Ram Oren mostly deals with Evapotranspiration, Atmospheric sciences, Agronomy, Primary production and Transpiration. His biological study spans a wide range of topics, including Tree transpiration, Resource, Soil water, Water balance and Digging. In his study, which falls under the umbrella issue of Atmospheric sciences, Water content is strongly linked to Eddy covariance.

As a part of the same scientific family, Ram Oren mostly works in the field of Agronomy, focusing on Taiga and, on occasion, Karst, Nitrate leaching and Soil warming. He is studying Vapour Pressure Deficit, which is a component of Transpiration. Canopy is a subfield of Botany that Ram Oren studies.

Between 2017 and 2021, his most popular works were:

  • Decadal biomass increment in early secondary succession woody ecosystems is increased by CO2 enrichment (26 citations)
  • Decadal biomass increment in early secondary succession woody ecosystems is increased by CO2 enrichment (26 citations)
  • Boreal forest biomass accumulation is not increased by two decades of soil warming (14 citations)

In his most recent research, the most cited papers focused on:

  • Ecology
  • Ecosystem
  • Botany

Ram Oren focuses on Evapotranspiration, Agronomy, Photosynthesis, Taiga and Soil carbon. His research investigates the link between Evapotranspiration and topics such as Water balance that cross with problems in Leaf area index, Streamflow, Transpiration and Soil fertility. His study in Photosynthesis is interdisciplinary in nature, drawing from both Pinus , Scots pine and Horticulture.

His research in Taiga intersects with topics in Water use, Canopy, Growing season and Water cycle. His Soil carbon study incorporates themes from Secondary succession, Temperate climate, Biomass, Primary production and Atmospheric sciences. The subject of his Terrestrial ecosystem research is within the realm of Ecosystem.

Best Publications

  • Progressive Nitrogen Limitation of Ecosystem Responses to Rising Atmospheric Carbon Dioxide

    Yiqi Luo;Bo Su;William S. Currie;Jeffrey S. Dukes

  • Soil fertility limits carbon sequestration by forest ecosystems in a CO 2 -enriched atmosphere

    Ram Oren;David S Ellsworth;David S Ellsworth;Kurt H Johnsen;Nathan C. Phillips

  • Survey and synthesis of intra- and interspecific variation in stomatal sensitivity to vapour pressure deficit

    R. Oren;J. S. Sperry;G. G. Katul;D. E. Pataki

  • Forest response to elevated CO2 is conserved across a broad range of productivity.

    Richard J. Norby;Evan H. DeLucia;Birgit Gielen;Carlo Calfapietra

  • Water deficits and hydraulic limits to leaf water supply.

    J. S. Sperry;U. G. Hacke;R. Oren;J. P. Comstock

  • Differential responses to changes in growth temperature between trees from different functional groups and biomes: a review and synthesis of data

    Danielle A. Way;Ram Oren

  • Mechanisms of long-distance dispersal of seeds by wind

    Ran Nathan;Gabriel G. Katul;Henry S. Horn;Suvi M. Thomas

  • Observed increase in local cooling effect of deforestation at higher latitudes

    Xuhui Lee;Michael L. Goulden;David Y. Hollinger;Alan Barr

  • Evapotranspiration: A process driving mass transport and energy exchange in the soil‐plant‐atmosphere‐climate system

    Gabriel G. Katul;Gabriel G. Katul;Ram Oren;Ram Oren;Stefano Manzoni;Chad Higgins

  • Application of the pipe model theory to predict canopy leaf area.

    R. H. Waring;P. E. Schroeder;R. Oren

  • Increases in the flux of carbon belowground stimulate nitrogen uptake and sustain the long‐term enhancement of forest productivity under elevated CO2

    John E. Drake;Anne Gallet-Budynek;Anne Gallet-Budynek;Kirsten S. Hofmockel;Emily S. Bernhardt

  • Simple additive effects are rare: a quantitative review of plant biomass and soil process responses to combined manipulations of CO2 and temperature.

    Wouter I. J. Dieleman;Wouter I. J. Dieleman;Sara Vicca;Feike A. Dijkstra;Frank Hagedorn

  • Radial patterns of xylem sap flow in non‐, diffuse‐ and ring‐porous tree species

    N. Phillips;R. Oren;R. Zimmermann

  • Increases in nitrogen uptake rather than nitrogen-use efficiency support higher rates of temperate forest productivity under elevated CO2

    Adrien C. Finzi;Richard J. Norby;Carlo Calfapietra;Anne Gallet-Budynek

  • Evaluation of 11 terrestrial carbon–nitrogen cycle models against observations from two temperate Free‐Air CO2 Enrichment studies

    Soenke Zaehle;Belinda E. Medlyn;Martin G. De Kauwe;Anthony P. Walker

  • Canopy nitrogen, carbon assimilation, and albedo in temperate and boreal forests: Functional relations and potential climate feedbacks

    S. V. Ollinger;A. D. Richardson;M. E. Martin;D. Y. Hollinger

  • Forest water use and water use efficiency at elevated CO2: a model‐data intercomparison at two contrasting temperate forest FACE sites

    Martin G. De Kauwe;Belinda E. Medlyn;Soenke Zaehle;Anthony P. Walker

  • Influence of soil porosity on water use in Pinus taeda

    U G Hacke;John S Sperry;Brent E Ewers;D S Ellsworth

  • A stomatal optimization theory to describe the effects of atmospheric CO2 on leaf photosynthesis and transpiration

    Gabriel Katul;Stefano Manzoni;Sari Palmroth;Ram Oren

  • The effect of tree height on crown level stomatal conductance

    Karina Schäfer;Karina Schäfer;Ram Oren;John Tenhunen

  • Using ecosystem experiments to improve vegetation models

    Belinda E Medlyn;Belinda E Medlyn;Sonke Zaehle;Martin G De Kauwe;Anthony P Walker

  • Transpiration in response to variation in microclimate and soil moisture in southeastern deciduous forests.

    Ram Oren;Diane E. Pataki

Frequent Co-Authors

Gabriel G. Katul
Gabriel G. Katul Duke University
Heather R. McCarthy
Heather R. McCarthy University of Oklahoma
Sari Palmroth
Sari Palmroth Duke University
Paul C. Stoy
Paul C. Stoy University of Wisconsin–Madison
David S. Ellsworth
David S. Ellsworth Western Sydney University
Ernst-Detlef Schulze
Ernst-Detlef Schulze Max Planck Institute for Biogeochemistry
Mario B. S. Siqueira
Mario B. S. Siqueira Duke University
Jean-Christophe Domec
Jean-Christophe Domec Bordeaux Sciences Agro
Nathan Phillips
Nathan Phillips Boston University
Kimberly A. Novick
Kimberly A. Novick Indiana University

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