World's Best Scientists 2026 revealed!
David H. Turpin

David H. Turpin

D-Index & Metrics

Plant Science and Agronomy

D-Index
51
Citations
8258
World Ranking
2055
National Ranking
88

David H. Turpin 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 David H. Turpin 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: 120 publications — 40th percentile

40% of scientists in this discipline score the same or lower.

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

David H. Turpin 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 David H. Turpin 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: 51 D-Index — 70th percentile

70% 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

  • 1998 - Fellow of the Royal Society of Canada Academy of Science

Overview

What is he best known for?

The fields of study he is best known for:

  • Enzyme
  • Metabolism
  • Photosynthesis

His scientific interests lie mostly in Photosynthesis, Botany, Biochemistry, Respiration and Ammonium. His work in the fields of Photosynthesis, such as Specific leaf area and RuBisCO, intersects with other areas such as Conductance. The study incorporates disciplines such as Carbon dioxide, Nitrate and Animal science in addition to Botany.

His work on Pyruvate carboxylase, Metabolism, Fatty acid synthesis and Malate dehydrogenase as part of general Biochemistry research is often related to Malic acid, thus linking different fields of science. His Respiration research is multidisciplinary, incorporating perspectives in Nitrogen assimilation, Assimilation and Algae. His Ammonium study combines topics in areas such as Environmental chemistry, Fractionation, Isotope fractionation and Isotopes of nitrogen.

His most cited work include:

  • Integration of Carbon and Nitrogen Metabolism in Plant and Algal Cells (359 citations)
  • EFFECTS OF INORGANIC N AVAILABILITY ON ALGAL PHOTOSYNTHESIS AND CARBON METABOLISM (347 citations)
  • Nitrogen isotope fractionation during the uptake and assimilation of nitrate, nitrite, ammonium, and urea by a marine diatom (264 citations)

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

David H. Turpin focuses on Biochemistry, Photosynthesis, Botany, Ammonium and Assimilation. In the field of Biochemistry, his study on Phosphoenolpyruvate carboxylase, Phosphoenolpyruvate carboxykinase, Enzyme and Pyruvate kinase overlaps with subjects such as Chlamydomonas reinhardtii. His research in Photosynthesis intersects with topics in Chlorophyll, Nitrogen assimilation, Algae, Respiration and Dissolved organic carbon.

His studies deal with areas such as Chemostat, Nitrogen, Horticulture, Carbon and Animal science as well as Botany. The Nitrogen study combines topics in areas such as Inorganic chemistry and Nitrate. As a part of the same scientific study, David H. Turpin usually deals with the Ammonium, concentrating on Chlorophyta and frequently concerns with Selenastrum and Phosphate.

He most often published in these fields:

  • Biochemistry (49.11%)
  • Photosynthesis (40.18%)
  • Botany (33.04%)

What were the highlights of his more recent work (between 1997-2014)?

  • Botany (33.04%)
  • Biochemistry (49.11%)
  • Photosynthesis (40.18%)

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

The scientist’s investigation covers issues in Botany, Biochemistry, Photosynthesis, Phosphoenolpyruvate carboxylase and Enzyme. His Botany research is multidisciplinary, relying on both Animal science, Nutrient, Horticulture and Nitrate. In his work, David H. Turpin performs multidisciplinary research in Biochemistry and Homotetramer.

His Photosynthesis research includes elements of Dissolved organic carbon and Isotopes of carbon. His study on Phosphoenolpyruvate carboxylase also encompasses disciplines like

  • Molecular mass, which have a strong connection to Dihydroxyacetone phosphate, Chlorophyceae, Pyruvate carboxylase, Assimilation and Cytosol,
  • Green algae which intersects with area such as Carbon fixation. Many of his research projects under Enzyme are closely connected to Receptor–ligand kinetics and Gene isoform with Receptor–ligand kinetics and Gene isoform, tying the diverse disciplines of science together.

Between 1997 and 2014, his most popular works were:

  • Nitrogen isotope fractionation during the uptake and assimilation of nitrate, nitrite, ammonium, and urea by a marine diatom (264 citations)
  • STEADY‐STATE LUXURY CONSUMPTION AND THE CONCEPT OF OPTIMUM NUTRIENT RATIOS: A STUDY WITH PHOSPHATE AND NITRATE LIMITED SELENASTRUM MINUTUM (CHLOROPHYTA)1 (131 citations)
  • Transfer conductance in second growth Douglas‐fir (Pseudotsuga menziesii (Mirb.)Franco) canopies (126 citations)

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

  • Enzyme
  • Metabolism
  • Photosynthesis

David H. Turpin mainly investigates Botany, Nitrate, Photosynthesis, Stomatal conductance and Isotopes of nitrogen. His Botany study typically links adjacent topics like Animal science. His Photosynthesis research is multidisciplinary, incorporating elements of Horticulture and Chlorophyll a.

The concepts of his Stomatal conductance study are interwoven with issues in Carbon dioxide, Stomatal density and Transpiration. David H. Turpin combines subjects such as Ammonium, Fractionation, Isotope fractionation, Emiliania huxleyi and Environmental chemistry with his study of Isotopes of nitrogen. His research integrates issues of Urea, Coccolithophore, Nitrogen, Inorganic chemistry and Thalassiosira pseudonana in his study of Ammonium.

Best Publications

  • Integration of Carbon and Nitrogen Metabolism in Plant and Algal Cells

    H. C. Huppe;D. H. Turpin

  • EFFECTS OF INORGANIC N AVAILABILITY ON ALGAL PHOTOSYNTHESIS AND CARBON METABOLISM

    David H. Turpin

  • Nitrogen isotope fractionation during the uptake and assimilation of nitrate, nitrite, ammonium, and urea by a marine diatom

    N. A. D. Waser;P. J. Harrison;B. Nielsen;S. E. Calvert

  • Plant Physiology, Biochemistry and Molecular Biology

    David T. Dennis;David H. Turpin

  • Limiting nutrient patchiness and its rôle in phytoplankton ecology

    David H. Turpin;Paul J. Harrison

  • Malate- and pyruvate-dependent Fatty Acid synthesis in leucoplasts from developing castor endosperm.

    Ronald G. Smith;David A. Gauthier;David T. Dennis;David H. Turpin

  • STEADY‐STATE LUXURY CONSUMPTION AND THE CONCEPT OF OPTIMUM NUTRIENT RATIOS: A STUDY WITH PHOSPHATE AND NITRATE LIMITED SELENASTRUM MINUTUM (CHLOROPHYTA)1

    Ivor R. Elrifi;David H. Turpin

  • Effects of Phosphorus Limitation on Respiratory Metabolism in the Green Alga Selenastrum minutum

    Maria E. Theodorou;Ivor R. Elrifi;David H. Turpin;William C. Plaxton

  • Stomatal development in new leaves is related to the stomatal conductance of mature leaves in poplar (Populus trichocarpa×P. deltoides)

    Shin-Ichi Miyazawa;Nigel J. Livingston;David H. Turpin

  • Transfer conductance in second growth Douglas‐fir (Pseudotsuga menziesii (Mirb.)Franco) canopies

    C. R. Warren;G. J. Ethier;N. J. Livingston;N. J. Grant

  • Respiratory losses in the light in a marine diatom: Measurements by short‐term mass spectrometry

    Harold G. Weger;Ronny Herzig;Paul G. Falkowski;David H. Turpin

  • Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability

    Nathalie A. Waser;Kedong Yin;Zhiming Yu;Kuninao Tada

  • Interactions between photosynthesis, respiration, and nitrogen assimilation in microalgae

    David H. Turpin;Ivor R. Elrifi;Douglas G. Birch;Harold G. Weger

  • Na+ requirement for growth, photosynthesis, and pH regulation in the alkalotolerant cyanobacterium Synechococcus leopoliensis.

    A G Miller;D H Turpin;D T Canvin

  • The Role of External Carbonic Anhydrase in Inorganic Carbon Acquisition by Chlamydomonas reinhardii at Alkaline pH

    Timothy G. Williams;David H. Turpin

  • Water stress decreases the transfer conductance of Douglas-fir (Pseudotsuga menziesii) seedlings.

    C. R. Warren;N. J. Livingston;D. H. Turpin

  • Mitochondrial Respiration Can Support NO3− and NO2− Reduction during Photosynthesis : Interactions between Photosynthesis, Respiration, and N Assimilation in the N-Limited Green Alga Selenastrum minutum

    Harold G. Weger;David H. Turpin

  • Nitrate and Ammonium Induced Photosynthetic Suppression in N-Limited Selenastrum minutum

    Ivor R. Elrifi;David H. Turpin

  • Relationship between NH+4 Assimilation Rate and in Vivo Phosphoenolpyruvate Carboxylase Activity : Regulation of Anaplerotic Carbon Flow in the Green Alga Selenastrum minutum

    Greg C. Vanlerberghe;Kathryn A. Schuller;Ronald G. Smith;Regina Feil

  • Growth and Photosynthesis of the Cyanobacterium Synechococcus leopoliensis in HCO3−-Limited Chemostats

    Anthony G. Miller;David H. Turpin;David T. Canvin

  • Ammonium Assimilation Requires Mitochondrial Respiration in the Light: A Study with the Green Alga Selenastrum minutum

    Harold G. Weger;Douglas G. Birch;Ivor R. Elrifi;David H. Turpin

  • Cell Size Manipulation in Natural Marine, Planktonic, Diatom Communities

    David H. Turpin;Paul J. Harrison

  • Regulation of Phosphoenolpyruvate Carboxylase from the Green Alga Selenastrum minutum: Properties Associated with Replenishment of Tricarboxylic Acid Cycle Intermediates during Ammonium Assimilation.

    Kathryn A. Schuller;William C. Plaxton;David H. Turpin

  • Na+Requirement forGrowth, Photosynthesis, andpHRegulation in theAlkalotolerant Cyanobacterium Synechococcus leopoliensis

    Anthony G. Miller;David H. Turpin;David T. Canvin

Frequent Co-Authors

William C. Plaxton
William C. Plaxton Queen's University
Paul J. Harrison
Paul J. Harrison University of Oxford
Greg C. Vanlerberghe
Greg C. Vanlerberghe University of Toronto
David T. Canvin
David T. Canvin Queen's University
Charles R. Warren
Charles R. Warren University of Sydney
David B. Layzell
David B. Layzell University of Calgary
Robert D. Guy
Robert D. Guy University of British Columbia
Stephen E. Calvert
Stephen E. Calvert University of British Columbia
Regina Feil
Regina Feil Max Planck Society
Kedong Yin
Kedong Yin Sun Yat-sen University

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Best Scientists Citing David H. Turpin