World's Best Scientists 2026 revealed!
John D. Marshall

John D. Marshall

D-Index & Metrics

Plant Science and Agronomy

D-Index
62
Citations
11560
World Ranking
1115
National Ranking
20

John D. Marshall 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 D. Marshall 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: 162 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

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

John D. Marshall 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 D. Marshall 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: 62 D-Index — 84th percentile

84% 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

  • 1961 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Botany
  • Ecosystem

John D. Marshall mostly deals with Botany, Isotopes of carbon, Water-use efficiency, Ecology and Stomatal conductance. His Botany research includes elements of Animal science and Horticulture. In his research on the topic of Horticulture, Canopy is strongly related with Biomass.

The concepts of his Isotopes of carbon study are interwoven with issues in δ13C and Photosynthetic pathway. His biological study spans a wide range of topics, including Terrestrial plant, Carbon uptake, Crassulacean acid metabolism and Range. The Ecosystem, Climate change and Intraspecific competition research he does as part of his general Ecology study is frequently linked to other disciplines of science, such as Gene–environment interaction, therefore creating a link between diverse domains of science.

His most cited work include:

  • Environmental and physiological determinants of carbon isotope discrimination in terrestrial plants (311 citations)
  • Environmental and physiological determinants of carbon isotope discrimination in terrestrial plants (311 citations)
  • Sources of Variation in the Stable Isotopic Composition of Plants (291 citations)

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

His main research concerns Botany, Ecology, Photosynthesis, Canopy and Respiration. His Botany research includes themes of δ13C, Horticulture and Isotopes of carbon. His Photosynthesis study incorporates themes from Agronomy and Seasonality.

John D. Marshall works mostly in the field of Canopy, limiting it down to topics relating to Leaf area index and, in certain cases, Canopy conductance and Interception. His research integrates issues of Phloem, Carbon dioxide, Bark and Animal science in his study of Respiration. His study focuses on the intersection of Stomatal conductance and fields such as Water-use efficiency with connections in the field of Dry matter.

He most often published in these fields:

  • Botany (43.88%)
  • Ecology (26.62%)
  • Photosynthesis (19.42%)

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

  • Conductance (2.16%)
  • Ecosystem (8.63%)
  • Scots pine (6.47%)

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

His scientific interests lie mostly in Conductance, Ecosystem, Scots pine, Soil water and Respiration. His Ecosystem research is within the category of Ecology. His study on Scots pine is covered under Botany.

His Botany research focuses on Bark in particular. His work investigates the relationship between Soil water and topics such as Microclimate that intersect with problems in δ13C and Growing season. His studies examine the connections between Respiration and genetics, as well as such issues in Phloem, with regards to Tracheid, Xylem, Shoot, Transpiration stream and Canopy.

Between 2017 and 2021, his most popular works were:

  • The handbook for standardized field and laboratory measurements in terrestrial climate change experiments and observational studies (ClimEx) (25 citations)
  • Photosynthetic refixation varies along the stem and reduces CO2 efflux in mature boreal Pinus sylvestris trees (13 citations)
  • Forest productivity varies with soil moisture more than temperature in a small montane watershed (7 citations)

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

  • Ecology
  • Botany
  • Ecosystem

His primary areas of study are Growing season, Microclimate, Water content, Vapour Pressure Deficit and δ13C. John D. Marshall has included themes like Carbon cycle and Metabolomics in his Growing season study. His study in Microclimate is interdisciplinary in nature, drawing from both Watershed, Soil water and Lapse rate.

Best Publications

  • Environmental and physiological determinants of carbon isotope discrimination in terrestrial plants

    Lucas A. Cernusak;Nerea Ubierna;Klaus Winter;Joseph A. M. Holtum;Joseph A. M. Holtum

  • Sources of Variation in the Stable Isotopic Composition of Plants

    John D. Marshall;J. Renee Brooks;Kate Lajtha

  • Altitude trends in conifer leaf morphology and stable carbon isotope composition

    K. R. Hultine;J. D. Marshall

  • The relationship between tree height and leaf area: sapwood area ratio.

    N. Mcdowell;H. Barnard;B. J. Bond;T. Hinckley

  • Differential uptake of summer precipitation among co-occurring trees and shrubs in a pinyon-juniper woodland

    L. B. Flanagan;J. R. Ehleringer;J. D. Marshall

  • Carbon Isotope Discrimination and Water-Use Efficiency in Native Plants of the North-Central Rockies

    John D. Marshall;Jianwei Zhang

  • Comparison of Methods of Estimating Leaf‐Area Index In Old‐Growth Douglas‐Fir

    J. D. Marshall;R. H. Waring

  • Predicting fine root production and turnover by monitoring root starch and soil temperature

    J. D. Marshall;R. H. Waring

  • High soil carbon dioxide concentrations inhibit root respiration of Douglas fir

    Jingen Qi;John D. Marshall;Kim G. Mattson

  • Homeostatic gas-exchange parameters inferred from 13C/12C in tree rings of conifers.

    John D. Marshall;Robert A. Monserud

  • An inexpensive, fast, and reliable method for vacuum extraction of soil and plant water for stable isotope analyses by mass spectrometry.

    Paul Koeniger;John D. Marshall;Timothy Link;Andreas Mulch

  • Genetic differentiation in carbon isotope discrimination and gas exchange in Pseudotsuga menziesii : a common-garden experiment

    Jianwei Zhang;John D. Marshall;Barry C. Jaquish

  • Allometric crown relations in three northern Idaho conifer species

    Robert A Monserud;John D Marshall

  • The way back: recovery of trees from drought and its implication for acclimation.

    Arthur Gessler;Alessandra Bottero;John Marshall;Matthias Arend

  • BAAD: a Biomass And Allometry Database for woody plants

    Daniel S. Falster;Remko A. Duursma;Masae I. Ishihara;Diego R. Barneche

  • Are xylem-tapping mistletoes partially heterotrophic?

    John D. Marshall;James R. Ehleringer

  • A regression-based equivalence test for model validation: shifting the burden of proof

    Andrew P. Robinson;Remko A. Duursma;John D. Marshall

  • Ideas and perspectives: Tracing terrestrial ecosystem water fluxes using hydrogen and oxygen stable isotopes – challenges and opportunities from an interdisciplinary perspective

    Daniele Penna;Luisa Hopp;Francesca Scandellari;Scott T. Allen

  • Drought reduces water uptake in beech from the drying topsoil, but no compensatory uptake occurs from deeper soil layers.

    Arthur Gessler;Arthur Gessler;Lukas Bächli;Elham Rouholahnejad Freund;Kerstin Treydte

  • Photosynthetic refixation in branches of Western White Pine

    Lucas L.A. Cernusak;John J.D. Marshall

  • Large variation in whole-plant water-use efficiency among tropical tree species

    Lucas A. Cernusak;Jorge E. Aranda;John D. Marshall;Klaus Winter

  • Time-series analysis of δ13C from tree rings. I. Time trends and autocorrelation

    Robert A. Monserud;John D. Marshall

Frequent Co-Authors

Torgny Näsholm
Torgny Näsholm Swedish University of Agricultural Sciences
Sune Linder
Sune Linder Swedish University of Agricultural Sciences
Timothy E. Link
Timothy E. Link University of Idaho
Remko A. Duursma
Remko A. Duursma Western Sydney University
Lucas A. Cernusak
Lucas A. Cernusak James Cook University
Ram Oren
Ram Oren Duke University
James R. Ehleringer
James R. Ehleringer University of Utah
Robert A. Monserud
Robert A. Monserud US Forest Service
Matthias Peichl
Matthias Peichl Swedish University of Agricultural Sciences
Andrew T. Hudak
Andrew T. Hudak US Forest Service

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