World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
44
Citations
8662
World Ranking
2984
National Ranking
740

Thomas A. Day 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 Thomas A. Day 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: 72 publications — 7th percentile

7% of scientists in this discipline score the same or lower.

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

Thomas A. Day 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 Thomas A. Day 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: 44 D-Index — 55th percentile

55% of scientists in this discipline score the same or lower.

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

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Botany
  • Ecosystem

His primary areas of study are Botany, Ecology, Ozone depletion, Biomass and Plant community. In general Botany, his work in Herbaceous plant and Uv b radiation is often linked to UVB Radiation linking many areas of study. His work in Tundra, Global warming, Vegetation and Productivity is related to Ecology.

His Ozone depletion study combines topics in areas such as Photosynthesis and Colobanthus quitensis, Deschampsia antarctica. His Biomass study integrates concerns from other disciplines, such as Growing season, Herbivore, Grassland, Poa pratensis and Grazing. Thomas A. Day combines subjects such as Climate change, Schizachyrium scoparium, Ecosystem and Cumulative effects with his study of Plant community.

His most cited work include:

  • Global assessment of experimental climate warming on tundra vegetation: heterogeneity over space and time. (598 citations)
  • Plot-scale evidence of tundra vegetation change and links to recent summer warming. (536 citations)
  • Are some plant life forms more effective than others in screening out ultraviolet-B radiation? (213 citations)

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

Thomas A. Day focuses on Botany, Deschampsia antarctica, Colobanthus quitensis, Ecology and Horticulture. Botany is often connected to Ozone depletion in his work. He interconnects Glacier foreland, Tundra and Physical geography in the investigation of issues within Deschampsia antarctica.

Thomas A. Day studied Tundra and Global warming that intersect with Vegetation, Cumulative effects and Biome. His Colobanthus quitensis research is multidisciplinary, relying on both Vegetative reproduction, Growing season, Biomass, Oceanography and Caryophyllaceae. His study in the field of Ecosystem and Soil water is also linked to topics like Nitrogen cycle.

He most often published in these fields:

  • Botany (50.00%)
  • Deschampsia antarctica (25.00%)
  • Colobanthus quitensis (23.44%)

What were the highlights of his more recent work (between 2011-2020)?

  • Plant litter (10.94%)
  • Litter (12.50%)
  • Photodegradation (7.81%)

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

Thomas A. Day mainly investigates Plant litter, Litter, Photodegradation, Sunlight and Ecology. His research on Plant litter often connects related topics like Botany. His study in the fields of Secondary succession under the domain of Botany overlaps with other disciplines such as Nitrification.

In general Ecology study, his work on Ecosystem, Tundra and Global warming often relates to the realm of Nitrogen cycle and Deglaciation, thereby connecting several areas of interest. His work carried out in the field of Tundra brings together such families of science as Productivity and Permafrost. The various areas that Thomas A. Day examines in his Climate change study include Plant community and Cumulative effects.

Between 2011 and 2020, his most popular works were:

  • Global assessment of experimental climate warming on tundra vegetation: heterogeneity over space and time. (598 citations)
  • Plot-scale evidence of tundra vegetation change and links to recent summer warming. (536 citations)
  • Nitrogen cycling in desert biological soil crusts across biogeographic regions in the Southwestern United States (67 citations)

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

  • Ecology
  • Botany
  • Ecosystem

His primary areas of investigation include Ecology, Tundra, Global warming, Ecosystem and Vegetation. His work on Bulk soil and Arid as part of general Ecology research is often related to Extinction risk from global warming, Denitrification and Nitrogen cycle, thus linking different fields of science. His Tundra research incorporates elements of Productivity, Permafrost and Biome.

His Global warming research incorporates themes from Plant community, Climatology and Cumulative effects. His study in the field of Biological soil crust also crosses realms of Cycling.

Best Publications

  • Global assessment of experimental climate warming on tundra vegetation: heterogeneity over space and time.

    Sarah C. Elmendorf;Gregory H. R. Henry;Robert D. Hollister;Robert G. Bjork

  • Plot-scale evidence of tundra vegetation change and links to recent summer warming.

    Sarah C. Elmendorf;Gregory H.R. Henry;Robert D. Hollister;Robert G. Björk

  • Are some plant life forms more effective than others in screening out ultraviolet-B radiation?

    T. A. Day;T. C. Vogelmann;E. H. DeLucia

  • Relating UV-B radiation screening effectiveness of foliage to absorbing-compound concentration and anatomical characteristics in a diverse group of plants

    T. A. Day

  • Growth and reproduction of Antarctic vascular plants in response to warming and UV radiation reductions in the field

    Thomas Day;C. T. Ruhland;C. W. Grobe;F. Xiong

  • Effect of solar ultraviolet-B radiation during springtime ozone depletion on photosynthesis and biomass production of Antarctic vascular plants.

    Fusheng S. Xiong;Thomas A. Day

  • Grassland patch dynamics and herbivore grazing preference following urine deposition

    T. A. Day;T. A. Day;J. K. Detling

  • Effects of UV-B Radiation on Terrestrial and Aquatic Primary Producers*

    Thomas A. Day;Patrick J. Neale

  • Penetration of UV‐B radiation in foliage: evidence that the epidermis behaves as a non‐uniform filter

    Thomas Day;G. Martin;T. C. Vogelmann

  • Photosynthetic and respiratory acclimation and growth response of Antarctic vascular plants to contrasting temperature regimes

    Fusheng S. Xiong;Erin C. Mueller;Thomas A. Day

  • Ultraviolet‐B and visible light penetration into needles of two species of subalpine conifers during foliar development

    E. H. DeLUCIA;Thomas Day;T. C. Vogelman

  • Warming increases aboveground plant biomass and C stocks in vascular‐plant‐dominated Antarctic tundra

    Thomas A. Day;Christopher T. Ruhland;Fusheng S. Xiong

  • Exposure to solar UV-B radiation accelerates mass and lignin loss of Larrea tridentata litter in the Sonoran Desert

    Thomas A. Day;Elisa T. Zhang;Christopher T. Ruhland

  • Ultraviolet absorption and epidermal-transmittance spectra in foliage

    Thomas Day;B. W. Howells;W. J. Rice

  • Effects of ultraviolet‐B radiation on leaf elongation, production and phenylpropanoid concentrations of Deschampsia antarctica and Colobanthus quitensis in Antarctica

    Christopher T. Ruhland;Thomas A. Day

  • Photosynthetic temperature response of the Antarctic vascular plants Colobanthus quitensis and Deschampsia antarctica

    F. S. Xiong;Christopher T. Ruhland;Thomas A. Day

  • Effect of Neotyphodium endophyte infection on growth and leaf gas exchange of Arizona fescue under contrasting water availability regimes

    Laura J. Morse;Thomas Day;S. H. Faeth

  • Influence of solar ultraviolet-B radiation on Antarctic terrestrial plants: Results from a 4-year field study

    Thomas Day;C. T. Ruhland;F. S. Xiong

  • Response of antarctic terrestrial microarthropods to long-term climate manipulations

    P. Convey;Philip J.A. Pugh;C. Jackson;A.W. Murray

  • EFFECT OF ENHANCED UV-B RADIATION ON POLLEN QUANTITY, QUALITY, AND SEED YIELD IN BRASSICA RAPA (BRASSICACEAE)

    Sophie M. Demchik;Thomas A. Day

  • Alterations in photosynthesis and pigment distributions in pea leaves following UV‐B exposure

    Thomas Day;T. C. Vogelmann

  • Nitrogen cycling in desert biological soil crusts across biogeographic regions in the Southwestern United States

    Sarah L. Strauss;Sarah L. Strauss;Thomas A. Day;Ferran Garcia-Pichel;Ferran Garcia-Pichel

  • Changes in leaf expansion and epidermal screening effectiveness in Liquidambar styraciflua and Pinus taeda in response to UV‐B radiation

    Joe H. Sullivan;Bradley W. Howells;Christopher T. Ruhland;Thomas A. Day

  • Changes in growth and pigment concentrations with leaf age in pea under modulated UV-B radiation field treatments

    Thomas Day;B. W. Howells;C. T. Ruhland

  • The effect of urban ground cover on microclimate, growth and leaf gas exchange of oleander in Phoenix, Arizona

    Erin C. Mueller;Thomas A. Day

  • Response of plants and the dominant microarthropod, Cryptopygus antarcticus, to warming and contrasting precipitation regimes in Antarctic tundra

    Thomas A. Day;Christopher T. Ruhland;Sarah L. Strauss;Ji-Hyung Park

  • Ultraviolet absorption and epidermal-transmittance spectra in foliage [UV-A radiation, UV-B radiation]

    T.A. Day;B.W. Howells;W.J. Rice

Frequent Co-Authors

Terry V. Callaghan
Terry V. Callaghan University of Sheffield
Johannes H. C. Cornelissen
Johannes H. C. Cornelissen Vrije Universiteit Amsterdam
John Harte
John Harte University of California, Berkeley
Anne Tolvanen
Anne Tolvanen Natural Resources Institute Finland
Ulf Molau
Ulf Molau University of Gothenburg
Gregory H. R. Henry
Gregory H. R. Henry University of British Columbia
Christian Rixen
Christian Rixen Swiss Federal Institute for Forest, Snow and Landscape Research
Annika Hofgaard
Annika Hofgaard Norwegian Institute for Nature Research
Ferran Garcia-Pichel
Ferran Garcia-Pichel Arizona State University
Gaku Kudo
Gaku Kudo Hokkaido University

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