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
57688
World Ranking
93
National Ranking
30

John S. Sperry publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where John S. Sperry sits on this spectrum.

36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36 publications 467+

This scientist: 180 publications — 71st percentile

71% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

John S. Sperry D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where John S. Sperry sits on this spectrum.

30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 110 D-Index — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

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
  • Xylem

The scientist’s investigation covers issues in Xylem, Botany, Hydraulic conductivity, Water transport and Cavitation. The concepts of his Xylem study are interwoven with issues in Ecology and Agronomy. His work on Climate change as part of general Ecology study is frequently connected to Increased stature and Basic knowledge, therefore bridging the gap between diverse disciplines of science and establishing a new relationship between them.

His Tracheid, Stomatal conductance, Water stress and Hydraulic conductance study in the realm of Botany interacts with subjects such as Embolism. The study incorporates disciplines such as Horticulture and Transpiration in addition to Hydraulic conductivity. His Cavitation research is multidisciplinary, incorporating elements of Photosynthesis and Animal science.

His most cited work include:

  • Mechanisms of plant survival and mortality during drought: why do some plants survive while others succumb to drought? (2316 citations)
  • Global convergence in the vulnerability of forests to drought (1256 citations)
  • Vulnerability of Xylem to Cavitation and Embolism (1195 citations)

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

His primary areas of investigation include Xylem, Botany, Water transport, Ecology and Cavitation. His Xylem research incorporates themes from Hydraulic conductivity and Transpiration. John S. Sperry has included themes like Conductance and Pressure gradient in his Hydraulic conductivity study.

His research on Botany often connects related topics like Composite material. His Ecology research focuses on subjects like Hydraulics, which are linked to Hydrology. His biological study spans a wide range of topics, including Photosynthesis, Soil science and Porosity.

He most often published in these fields:

  • Xylem (64.88%)
  • Botany (55.36%)
  • Water transport (30.36%)

What were the highlights of his more recent work (between 2015-2020)?

  • Ecology (27.38%)
  • Xylem (64.88%)
  • Climate change (8.93%)

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

His scientific interests lie mostly in Ecology, Xylem, Climate change, Transpiration and Atmospheric sciences. His study in the field of Ecosystem, Forest ecology and Hydraulic conductivity is also linked to topics like Water transport. His research in Xylem intersects with topics in Canopy, Woody plant and Growing season.

His research integrates issues of Abundance, Carbon cycle, Vegetation and Biome in his study of Climate change. Within one scientific family, John S. Sperry focuses on topics pertaining to Water potential under Transpiration, and may sometimes address concerns connected to Tree species, Tropical trees, Leaf phenology and Abscission. His research on Atmospheric sciences also deals with topics like

  • Vapour Pressure Deficit which is related to area like Humidity and Terrestrial ecosystem,
  • Photosynthesis which is related to area like Cavitation.

Between 2015 and 2020, his most popular works were:

  • A multi-species synthesis of physiological mechanisms in drought-induced tree mortality (351 citations)
  • Weak tradeoff between xylem safety and xylem-specific hydraulic efficiency across the world's woody plant species (269 citations)
  • Drivers and Mechanisms of Tree Mortality in Moist Tropical Forests (152 citations)

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

  • Ecology
  • Botany
  • Thermodynamics

John S. Sperry mainly investigates Ecology, Xylem, Transpiration, Climate change and Hydraulic conductivity. His studies in Ecology integrate themes in fields like Specific leaf area, Environmental resource management and Current. His Xylem studies intersect with other subjects such as Context and Water transport.

His Transpiration study combines topics from a wide range of disciplines, such as Tropical trees, Atmospheric sciences and Water potential. The Climate change study combines topics in areas such as Abundance and Biome. John S. Sperry has researched Hydraulic conductivity in several fields, including Hydraulic efficiency and Woody plant.

Best Publications

  • Mechanisms of plant survival and mortality during drought: why do some plants survive while others succumb to drought?

    Nate G. McDowell;William T. Pockman;Craig D. Allen;David D. Breshears

  • Global convergence in the vulnerability of forests to drought

    Brendan Choat;Steven Jansen;Tim J. Brodribb;Hervé Cochard;Hervé Cochard

  • Vulnerability of Xylem to Cavitation and Embolism

    M. T. Tyree;J. S. Sperry

  • Plant responses to rising vapor pressure deficit.

    Charlotte Grossiord;Charlotte Grossiord;Thomas N. Buckley;Lucas A. Cernusak;Kimberly A. Novick

  • Trends in wood density and structure are linked to prevention of xylem implosion by negative pressure

    Uwe G. Hacke;John S. Sperry;William T. Pockman;Stephen D. Davis

  • A method for measuring hydraulic conductivity and embolism in xylem

    J. S. Sperry;J. R. Donnelly;M. T. Tyree

  • 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

  • Do Woody Plants Operate Near the Point of Catastrophic Xylem Dysfunction Caused by Dynamic Water Stress? : Answers from a Model

    Melvin T. Tyree;John S. Sperry

  • Functional and ecological xylem anatomy

    Uwe G. Hacke;John S. Sperry

  • A multi-species synthesis of physiological mechanisms in drought-induced tree mortality

    Henry D. Adams;Melanie J.B. Zeppel;Melanie J.B. Zeppel;William R.L. Anderegg;Henrik Hartmann

  • Water deficits and hydraulic limits to leaf water supply.

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

  • Xylem Embolism in Ring-Porous, Diffuse-Porous, and Coniferous Trees of Northern Utah and Interior Alaska

    John S. Sperry;Kirk L. Nichols;June E. M. Sullivan;Sonda E. Eastlack

  • Mechanism of water stress-induced xylem embolism.

    John S. Sperry;Melvin T. Tyree

  • Limitation of plant water use by rhizosphere and xylem conductance: results from a model

    J. S. Sperry;F. R. Adler;G. S. Campbell;J. P. Comstock

  • Root water uptake and transport: using physiological processes in global predictions.

    Robert B. Jackson;John S. Sperry;Todd E. Dawson

  • Scaling of angiosperm xylem structure with safety and efficiency.

    Uwe G. Hacke;John S. Sperry;James K. Wheeler;Laura Castro

  • Hydraulic constraints on plant gas exchange

    John S Sperry

  • The plant vascular system: evolution, development and functions

    William J. Lucas;Andrew Groover;Raffael Lichtenberger;Kaori Furuta

  • The roles of hydraulic and carbon stress in a widespread climate-induced forest die-off

    William R. L. Anderegg;Joseph A. Berry;Duncan D. Smith;John S. Sperry

  • Weak tradeoff between xylem safety and xylem-specific hydraulic efficiency across the world's woody plant species

    Sean M. Gleason;Sean M. Gleason;Mark Westoby;Steven Jansen;Brendan Choat

  • Vulnerability to xylem cavitation and the distribution of Sonoran Desert vegetation

    William T. Pockman;John S. Sperry

  • Stomatal conductance and photosynthesis vary linearly with plant hydraulic conductance in ponderosa pine

    Robert M. Hubbard;M. G. Ryan;V. Stiller;J. S. Sperry

  • XYLEM EMBOLISM IN RING-POROUS, DIFFUSE-POROUS, AND CONIFEROUS TREES OF

    Northern Utah;Interior Alaska;John S. Sperry;Kirk L. Nichols

Frequent Co-Authors

Uwe G. Hacke
Uwe G. Hacke University of Alberta
William R. L. Anderegg
William R. L. Anderegg University of Utah
Katherine A. McCulloh
Katherine A. McCulloh University of Wisconsin–Madison
William T. Pockman
William T. Pockman University of New Mexico
Melvin T. Tyree
Melvin T. Tyree Zhejiang Normal University
Steven Jansen
Steven Jansen University of Ulm
Nate G. McDowell
Nate G. McDowell Pacific Northwest National Laboratory
Anna T. Trugman
Anna T. Trugman University of California, Santa Barbara
Hervé Cochard
Hervé Cochard INRAE : Institut national de recherche pour l'agriculture, l'alimentation et l'environnement
Frederick C. Meinzer
Frederick C. Meinzer Oregon State University

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