World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 53 1791 1643 33 30 152 10549
Environmental Sciences 56 3647 3482 67 66 180 11419

Håkan Pleijel publications per year

The chart shows the history of publications by Håkan Pleijel between 1991 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Håkan Pleijel published across 35 years, from 1991 to 2025, averaging 6 papers a year. Output peaked at 14 publications in 2014. 11 of the 209 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1991 to 2025. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 2014. 1991: 1 publication 1992: 2 publications 1993: 0 publications 1994: 4 publications 1995: 8 publications 1996: 2 publications 1997: 3 publications 1998: 3 publications 1999: 7 publications 2000: 6 publications 2001: 2 publications 2002: 6 publications 2003: 5 publications 2004: 13 publications 2005: 3 publications 2006: 5 publications 2007: 5 publications 2008: 7 publications 2009: 10 publications 2010: 2 publications 2011: 9 publications 2012: 7 publications 2013: 6 publications 2014: 14 publications 2015: 8 publications 2016: 6 publications 2017: 6 publications 2018: 11 publications 2019: 8 publications 2020: 4 publications 2021: 9 publications 2022: 8 publications 2023: 8 publications 2024: 8 publications 2025: 3 publications
1991 2025

209 publications in total across all disciplines

View publications per year as a table
Håkan Pleijel: publications per year, 1991 to 2025
Year Publications
1991 1
1992 2
1993 0
1994 4
1995 8
1996 2
1997 3
1998 3
1999 7
2000 6
2001 2
2002 6
2003 5
2004 13
2005 3
2006 5
2007 5
2008 7
2009 10
2010 2
2011 9
2012 7
2013 6
2014 14
2015 8
2016 6
2017 6
2018 11
2019 8
2020 4
2021 9
2022 8
2023 8
2024 8
2025 3
Total 209
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Håkan Pleijel 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 Håkan Pleijel sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 88 bars. Horizontal axis: publications, 36–40 to 467+. Vertical axis: number of scientists, 0 to 255. Most scientists, 255, have 111–115 publications. The last bar groups every scientist with 467 publications or more. The highlighted bar, 151–155 publications, is where this scientist sits. 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
36–40 publications 467+

This scientist: 152 publications — 59th percentile

59% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Plant Science and Agronomy scientists by publication count, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
Publications Scientists This scientist
36–40 2
41–45 7
46–50 40
51–55 58
56–60 60
61–65 107
66–70 130
71–75 153
76–80 191
81–85 199
86–90 206
91–95 218
96–100 226
101–105 227
106–110 247
111–115 255
116–120 253
121–125 233
126–130 219
131–135 201
136–140 194
141–145 176
146–150 157
151–155 147 152
156–160 151
161–165 159
166–170 137
171–175 128
176–180 126
181–185 98
186–190 114
191–195 100
196–200 90
201–205 71
206–210 98
211–215 70
216–220 86
221–225 61
226–230 58
231–235 53
236–240 64
241–245 39
246–250 46
251–255 51
256–260 36
261–265 44
266–270 35
271–275 30
276–280 33
281–285 35
286–290 36
291–295 26
296–300 26
301–305 31
306–310 30
311–315 21
316–320 29
321–325 14
326–330 15
331–335 15
336–340 17
341–345 15
346–350 12
351–355 17
356–360 18
361–365 12
366–370 11
371–375 6
376–380 6
381–385 11
386–390 9
391–395 10
396–400 8
401–405 4
406–410 9
411–415 11
416–420 4
421–425 7
426–430 4
431–435 3
436–440 5
441–445 8
446–450 6
451–455 7
456–460 5
461–465 6
466 2
467+ 99
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Håkan Pleijel 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 Håkan Pleijel sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 80 bars. Horizontal axis: D-Index, 30 to 109+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 34 D-Index. The last bar groups every scientist with 109 D-Index or more. The highlighted bar, 53 D-Index, is where this scientist sits. 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: 53 D-Index — 73rd percentile

73% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Plant Science and Agronomy scientists by D-index, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
D-Index Scientists This scientist
30 200
31 236
32 253
33 283
34 288
35 240
36 246
37 243
38 247
39 229
40 232
41 230
42 228
43 219
44 193
45 164
46 158
47 143
48 131
49 127
50 122
51 122
52 110
53 102 53
54 98
55 79
56 85
57 88
58 91
59 62
60 61
61 59
62 54
63 61
64 59
65 58
66 41
67 49
68 39
69 32
70 40
71 47
72 38
73 28
74 29
75 28
76 22
77 21
78 25
79 26
80 19
81 16
82 12
83 16
84 14
85 11
86 17
87 13
88 10
89 12
90 18
91 16
92 16
93 17
94 12
95 8
96 9
97 9
98 11
99 12
100 5
101 8
102 4
103 11
104 5
105 9
106 7
107 4
108 8
109+ 99
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Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Botany
  • Agronomy

Håkan Pleijel focuses on Ozone, Agronomy, Stomatal conductance, Botany and Carbon dioxide. His research in Ozone intersects with topics in Biomass, Air pollution, Poaceae and Animal science. His study in Cultivar, Yield and Phytotoxicity is carried out as part of his Agronomy studies.

His Stomatal conductance research incorporates themes from Vapour Pressure Deficit, Transpiration and Photosynthetically active radiation. The study of Botany is intertwined with the study of Horticulture in a number of ways. His Carbon dioxide study combines topics in areas such as Terrestrial plant and Productivity.

His most cited work include:

  • Evaluating the relationship between leaf chlorophyll concentration and SPAD-502 chlorophyll meter readings (385 citations)
  • A synthesis of AOT40-based response functions and critical levels of ozone for agricultural and horticultural crops (301 citations)
  • New stomatal flux-based critical levels for ozone effects on vegetation (168 citations)

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

Håkan Pleijel mainly investigates Ozone, Agronomy, Botany, Stomatal conductance and Animal science. His Ozone study integrates concerns from other disciplines, such as Pollutant, Horticulture, Vegetation, Air pollution and Poaceae. His Agronomy research includes themes of Tropospheric ozone and Carbon dioxide.

As part of the same scientific family, Håkan Pleijel usually focuses on Botany, concentrating on Biomass and intersecting with Ozone exposure. In Stomatal conductance, Håkan Pleijel works on issues like Vapour Pressure Deficit, which are connected to Meteorology. His Animal science research is multidisciplinary, incorporating elements of Grain yield and Straw.

He most often published in these fields:

  • Ozone (56.87%)
  • Agronomy (33.75%)
  • Botany (19.38%)

What were the highlights of his more recent work (between 2014-2021)?

  • Ozone (56.87%)
  • Agronomy (33.75%)
  • Crop (8.75%)

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

His main research concerns Ozone, Agronomy, Crop, Animal science and Yield. His research integrates issues of Biomass, Vegetation and Pollutant in his study of Ozone. He combines subjects such as Climate change and Nutrient with his study of Agronomy.

His studies deal with areas such as Agriculture, Statistics, Yield and Seed protein as well as Crop. His research in Animal science intersects with topics in Crop yield, Carbon dioxide and Starch. In his study, which falls under the umbrella issue of Cultivar, Stomatal conductance is strongly linked to Chlorophyll a.

Between 2014 and 2021, his most popular works were:

  • Tropospheric Ozone Assessment Report: Present-day tropospheric ozone distribution and trends relevant to vegetation (112 citations)
  • Constraints to nitrogen acquisition of terrestrial plants under elevated CO2 (83 citations)
  • Transpiration of urban trees and its cooling effect in a high latitude city. (81 citations)

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

  • Ecology
  • Botany
  • Agronomy

The scientist’s investigation covers issues in Ozone, Agronomy, Climate change, Tropospheric ozone and Vegetation. His work deals with themes such as Photosynthesis, Cultivar and Chlorophyll a, which intersect with Ozone. His work carried out in the field of Agronomy brings together such families of science as Carbon dioxide, Animal science and Starch.

Håkan Pleijel focuses mostly in the field of Climate change, narrowing it down to topics relating to Ecosystem and, in certain cases, Grassland, Productivity and Terrestrial plant. His Tropospheric ozone research incorporates elements of Food security and Pollutant. Håkan Pleijel has researched Vegetation in several fields, including Ground Level Ozone, Northern Hemisphere and Physical geography.

Best Publications

  • Evaluating the relationship between leaf chlorophyll concentration and SPAD-502 chlorophyll meter readings

    J. Uddling;J. Gelang-Alfredsson;K. Piikki;H. Pleijel

  • A synthesis of AOT40-based response functions and critical levels of ozone for agricultural and horticultural crops

    G. Mills;A. Buse;B. Gimeno;V. Bermejo

  • Tropospheric Ozone Assessment Report: Present-day tropospheric ozone distribution and trends relevant to vegetation

    Gina Mills;Håkan Pleijel;Christopher S. Malley;Baerbel Sinha

  • Ozone effects on crops and consideration in crop models

    Lisa D. Emberson;Håkan Pleijel;Elizabeth A. Ainsworth;Maurits van den Berg

  • New stomatal flux-based critical levels for ozone effects on vegetation

    Gina E. Mills;Hakan Pleijel;Sabine Braun;Patrick Buker

  • Ozone pollution will compromise efforts to increase global wheat production.

    Gina Mills;Katrina Sharps;David Simpson;David Simpson;Håkan Pleijel

  • Policy design for the Anthropocene

    Thomas Sterner;Edward B. Barbier;Ian Bateman;Inge van den Bijgaart

  • Ozone risk assessment for agricultural crops in Europe: Further development of stomatal flux and flux–response relationships for European wheat and potato

    H. Pleijel;H. Danielsson;L. Emberson;M.R. Ashmore

  • Closing the global ozone yield gap: Quantification and cobenefits for multistress tolerance

    Gina Mills;Katrina Sharps;David Simpson;David Simpson;Håkan Pleijel

  • Transpiration of urban trees and its cooling effect in a high latitude city.

    Janina Konarska;Johan Uddling;Björn Holmer;Martina Lutz

  • Constraints to nitrogen acquisition of terrestrial plants under elevated CO2

    Zhaozhong Feng;Zhaozhong Feng;Tobias Rütting;Håkan Pleijel;Göran Wallin

  • Influence of urban vegetation on air pollution and noise exposure - A case study in Gothenburg, Sweden

    Jenny Klingberg;Malin Broberg;Bo Strandberg;Pontus Thorsson

  • Relationships between ozone exposure and yield loss in European wheat and potato—a comparison of concentration- and flux-based exposure indices

    H. Pleijel;H. Danielsson;Katinka Ojanperä;L De Temmerman

  • Differential ozone sensitivity in an old and a modern Swedish wheat cultivar—grain yield and quality, leaf chlorophyll and stomatal conductance

    H. Pleijel;A. Berglen Eriksen;H. Danielsson;N. Bondesson

  • Rate and duration of grain filling in relation to flag leaf senescence and grain yield in spring wheat (Triticum aestivum) exposed to different concentrations of ozone

    Johanna Gelang;Håkan Pleijel;Ebe Sild;Helena Danielsson

  • Growth stage dependence of the grain yield response to ozone in spring wheat (Triticum aestivum L.)

    H Pleijel;H Danielsson;J Gelang;E Sild

  • Narrowing uncertainties in the effects of elevated CO2 on crops

    Andrea Toreti;Delphine Deryng;Francesco N. Tubiello;Christoph Müller

  • Grain protein accumulation in relation to grain yield of spring wheat (Triticum aestivum L.) grown in open-top chambers with different concentrations of ozone, carbon dioxide and water availability

    H. Pleijel;L. Mortensen;J. Fuhrer;Katinka Ojanperä

  • Yield vs. quality trade-offs for wheat in response to carbon dioxide and ozone.

    Håkan Pleijel;Johan Uddling

  • A stomatal ozone flux-response relationship to assess ozone-induced yield loss of winter wheat in subtropical China.

    Zhaozhong Feng;Haoye Tang;Haoye Tang;Johan Uddling;Håkan Pleijel

  • Yield and grain quality of spring wheat (Triticum aestivum L., cv. Drabant) exposed to different concentrations of ozone in open-top chambers.

    H. Pleijel;L. Skärby;G. Wallin;G. Selldén

  • Ozone uptake modelling and flux-response relationships—an assessment of ozone-induced yield loss in spring wheat

    Helena Danielsson;Gunilla Pihl Karlsson;Per Erik Karlsson;H. Håkan Pleijel

Frequent Co-Authors

Johan Uddling
Johan Uddling University of Gothenburg
Zhaozhong Feng
Zhaozhong Feng Nanjing University of Information Science and Technology
David Simpson
David Simpson Chalmers University of Technology
Gina Mills
Gina Mills University of Gothenburg
Lisa Emberson
Lisa Emberson University of York
Deliang Chen
Deliang Chen Tsinghua University
Kazuhiko Kobayashi
Kazuhiko Kobayashi University of Tokyo
Petra Högy
Petra Högy University of Hohenheim
Mattias Hallquist
Mattias Hallquist University of Gothenburg
Harry Harmens
Harry Harmens Bangor University

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