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Jean-Claude Grégoire

Jean-Claude Grégoire

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D-Index & Metrics

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Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Ecology and Evolution 46 4619 4457 58 57 378 8884

Jean-Claude Grégoire publications per year

The chart shows the history of publications by Jean-Claude Grégoire between 1978 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Jean-Claude Grégoire published across 48 years, from 1978 to 2025, averaging 9.6 papers a year. Output peaked at 51 publications in 2017. 25 of the 459 publications appeared in the last two years.

No. of publications
10 20 30 40 50
Bar chart. Horizontal axis: year, 1978 to 2025. Vertical axis: number of publications, 0 to 51. Peak 51 publications in 2017. 1978: 1 publication 1979: 0 publications 1980: 2 publications 1981: 0 publications 1982: 1 publication 1983: 1 publication 1984: 11 publications 1985: 0 publications 1986: 2 publications 1987: 1 publication 1988: 10 publications 1989: 2 publications 1990: 2 publications 1991: 2 publications 1992: 6 publications 1993: 4 publications 1994: 2 publications 1995: 4 publications 1996: 11 publications 1997: 1 publication 1998: 0 publications 1999: 6 publications 2000: 4 publications 2001: 8 publications 2002: 3 publications 2003: 13 publications 2004: 10 publications 2005: 5 publications 2006: 8 publications 2007: 8 publications 2008: 12 publications 2009: 11 publications 2010: 9 publications 2011: 12 publications 2012: 11 publications 2013: 16 publications 2014: 27 publications 2015: 13 publications 2016: 16 publications 2017: 51 publications 2018: 41 publications 2019: 7 publications 2020: 4 publications 2021: 10 publications 2022: 36 publications 2023: 30 publications 2024: 22 publications 2025: 3 publications
1978 2025

459 publications in total across all disciplines

View publications per year as a table
Jean-Claude Grégoire: publications per year, 1978 to 2025
Year Publications
1978 1
1979 0
1980 2
1981 0
1982 1
1983 1
1984 11
1985 0
1986 2
1987 1
1988 10
1989 2
1990 2
1991 2
1992 6
1993 4
1994 2
1995 4
1996 11
1997 1
1998 0
1999 6
2000 4
2001 8
2002 3
2003 13
2004 10
2005 5
2006 8
2007 8
2008 12
2009 11
2010 9
2011 12
2012 11
2013 16
2014 27
2015 13
2016 16
2017 51
2018 41
2019 7
2020 4
2021 10
2022 36
2023 30
2024 22
2025 3
Total 459
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Jean-Claude Grégoire publications per year - data summary

  • Jean-Claude Grégoire, a Ecology and Evolution scholar from Université Libre de Bruxelles, has 459 publications recorded across 48 years, from 1978 to 2025.
  • The oldest publication on record dates to 1978 and the most recent to 2025.
  • The most productive year is 2017, with 51 publications.
  • The least productive years with any output are 1978, 1982, 1983, 1987 and others, with 1 publication each.
  • 4 of the 48 years in the span carry no publications at all (1979, 1981, 1985 and 1998).
  • The rate of publication averages 9.6 papers per year over the whole span, or 10.4 per year counting only the 44 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 101 publications, 22% of the career total.
  • Split into equal eras - 1978-1993: 45 publications (2.8 per year); 1994-2009: 106 publications (6.6 per year); 2010-2025: 308 publications (19.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Jean-Claude Grégoire publication distribution in Ecology and Evolution in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Ecology and Evolution in 2026. The highlighted bar marks where Jean-Claude Grégoire sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 100 bars. Horizontal axis: publications, 37–41 to 531+. Vertical axis: number of scientists, 0 to 333. Most scientists, 333, have 97–101 publications. The last bar groups every scientist with 531 publications or more. The highlighted bar, 377–381 publications, is where this scientist sits. 37–41 publications: 2 scientists 42–46 publications: 9 scientists 47–51 publications: 10 scientists 52–56 publications: 31 scientists 57–61 publications: 56 scientists 62–66 publications: 91 scientists 67–71 publications: 92 scientists 72–76 publications: 127 scientists 77–81 publications: 173 scientists 82–86 publications: 236 scientists 87–91 publications: 227 scientists 92–96 publications: 240 scientists 97–101 publications: 333 scientists 102–106 publications: 280 scientists 107–111 publications: 300 scientists 112–116 publications: 285 scientists 117–121 publications: 305 scientists 122–126 publications: 287 scientists 127–131 publications: 278 scientists 132–136 publications: 289 scientists 137–141 publications: 273 scientists 142–146 publications: 262 scientists 147–151 publications: 246 scientists 152–156 publications: 235 scientists 157–161 publications: 205 scientists 162–166 publications: 199 scientists 167–171 publications: 174 scientists 172–176 publications: 164 scientists 177–181 publications: 173 scientists 182–186 publications: 189 scientists 187–191 publications: 170 scientists 192–196 publications: 139 scientists 197–201 publications: 128 scientists 202–206 publications: 117 scientists 207–211 publications: 115 scientists 212–216 publications: 107 scientists 217–221 publications: 124 scientists 222–226 publications: 81 scientists 227–231 publications: 82 scientists 232–236 publications: 85 scientists 237–241 publications: 75 scientists 242–246 publications: 66 scientists 247–251 publications: 81 scientists 252–256 publications: 69 scientists 257–261 publications: 70 scientists 262–266 publications: 55 scientists 267–271 publications: 64 scientists 272–276 publications: 49 scientists 277–281 publications: 48 scientists 282–286 publications: 44 scientists 287–291 publications: 45 scientists 292–296 publications: 36 scientists 297–301 publications: 39 scientists 302–306 publications: 38 scientists 307–311 publications: 30 scientists 312–316 publications: 34 scientists 317–321 publications: 25 scientists 322–326 publications: 22 scientists 327–331 publications: 28 scientists 332–336 publications: 30 scientists 337–341 publications: 22 scientists 342–346 publications: 30 scientists 347–351 publications: 26 scientists 352–356 publications: 22 scientists 357–361 publications: 29 scientists 362–366 publications: 21 scientists 367–371 publications: 12 scientists 372–376 publications: 18 scientists 377–381 publications: 17 scientists 382–386 publications: 13 scientists 387–391 publications: 21 scientists 392–396 publications: 13 scientists 397–401 publications: 10 scientists 402–406 publications: 15 scientists 407–411 publications: 8 scientists 412–416 publications: 9 scientists 417–421 publications: 8 scientists 422–426 publications: 4 scientists 427–431 publications: 10 scientists 432–436 publications: 10 scientists 437–441 publications: 5 scientists 442–446 publications: 4 scientists 447–451 publications: 10 scientists 452–456 publications: 2 scientists 457–461 publications: 4 scientists 462–466 publications: 7 scientists 467–471 publications: 7 scientists 472–476 publications: 6 scientists 477–481 publications: 6 scientists 482–486 publications: 3 scientists 487–491 publications: 3 scientists 492–496 publications: 4 scientists 497–501 publications: 4 scientists 502–506 publications: 8 scientists 507–511 publications: 5 scientists 512–516 publications: 4 scientists 517–521 publications: 5 scientists 522–526 publications: 4 scientists 527–530 publications: 5 scientists 531+ publications: 100 scientists
37–41 publications 531+

This scientist: 378 publications — 96th percentile

96% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 531 publications or more.

View publications distribution as a table
Number of Ecology and Evolution scientists by publication count, Research.com 2026 ranking edition. Based on 8,381 ranked scientists.
Publications Scientists This scientist
37–41 2
42–46 9
47–51 10
52–56 31
57–61 56
62–66 91
67–71 92
72–76 127
77–81 173
82–86 236
87–91 227
92–96 240
97–101 333
102–106 280
107–111 300
112–116 285
117–121 305
122–126 287
127–131 278
132–136 289
137–141 273
142–146 262
147–151 246
152–156 235
157–161 205
162–166 199
167–171 174
172–176 164
177–181 173
182–186 189
187–191 170
192–196 139
197–201 128
202–206 117
207–211 115
212–216 107
217–221 124
222–226 81
227–231 82
232–236 85
237–241 75
242–246 66
247–251 81
252–256 69
257–261 70
262–266 55
267–271 64
272–276 49
277–281 48
282–286 44
287–291 45
292–296 36
297–301 39
302–306 38
307–311 30
312–316 34
317–321 25
322–326 22
327–331 28
332–336 30
337–341 22
342–346 30
347–351 26
352–356 22
357–361 29
362–366 21
367–371 12
372–376 18
377–381 17 378
382–386 13
387–391 21
392–396 13
397–401 10
402–406 15
407–411 8
412–416 9
417–421 8
422–426 4
427–431 10
432–436 10
437–441 5
442–446 4
447–451 10
452–456 2
457–461 4
462–466 7
467–471 7
472–476 6
477–481 6
482–486 3
487–491 3
492–496 4
497–501 4
502–506 8
507–511 5
512–516 4
517–521 5
522–526 4
527–530 5
531+ 100
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Jean-Claude Grégoire publication distribution in Ecology and Evolution in 2026 - data summary

  • The chart plots the publication count of all 8,381 Ecology and Evolution scientists ranked by Research.com in 2026, grouped into 100 ranges running from 37–41 to 531+ publications.
  • Jean-Claude Grégoire, a Ecology and Evolution scholar from Université Libre de Bruxelles, records 378 publications - the 96th percentile of the discipline.
  • 96% of ranked Ecology and Evolution scientists score the same or lower than Jean-Claude Grégoire, and about 4% score higher.
  • The median of the discipline falls in the 147–151 publications range, and Jean-Claude Grégoire ranks above the median.
  • The most crowded range is 97–101 publications, holding 333 scientists (4% of the field).
  • 58% of the field sits in the lowest quarter of the value range (up to 157–161 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 531 publications or more, 100 scientists in all (1% of the field).

Jean-Claude Grégoire D-index placement in Ecology and Evolution in 2026

The chart shows the D-index (discipline H-index) distribution of Ecology and Evolution scientists ranked by Research.com in 2026. The highlighted bar marks where Jean-Claude Grégoire sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 92 bars. Horizontal axis: D-Index, 30 to 121+. Vertical axis: number of scientists, 0 to 280. Most scientists, 280, have 40 D-Index. The last bar groups every scientist with 121 D-Index or more. The highlighted bar, 46 D-Index, is where this scientist sits. 30 D-Index: 95 scientists 31 D-Index: 123 scientists 32 D-Index: 191 scientists 33 D-Index: 245 scientists 34 D-Index: 252 scientists 35 D-Index: 244 scientists 36 D-Index: 249 scientists 37 D-Index: 244 scientists 38 D-Index: 254 scientists 39 D-Index: 254 scientists 40 D-Index: 280 scientists 41 D-Index: 274 scientists 42 D-Index: 266 scientists 43 D-Index: 233 scientists 44 D-Index: 248 scientists 45 D-Index: 208 scientists 46 D-Index: 201 scientists 47 D-Index: 213 scientists 48 D-Index: 207 scientists 49 D-Index: 172 scientists 50 D-Index: 209 scientists 51 D-Index: 199 scientists 52 D-Index: 153 scientists 53 D-Index: 169 scientists 54 D-Index: 163 scientists 55 D-Index: 148 scientists 56 D-Index: 120 scientists 57 D-Index: 146 scientists 58 D-Index: 137 scientists 59 D-Index: 140 scientists 60 D-Index: 104 scientists 61 D-Index: 119 scientists 62 D-Index: 118 scientists 63 D-Index: 99 scientists 64 D-Index: 77 scientists 65 D-Index: 100 scientists 66 D-Index: 86 scientists 67 D-Index: 83 scientists 68 D-Index: 75 scientists 69 D-Index: 94 scientists 70 D-Index: 57 scientists 71 D-Index: 68 scientists 72 D-Index: 59 scientists 73 D-Index: 63 scientists 74 D-Index: 66 scientists 75 D-Index: 60 scientists 76 D-Index: 42 scientists 77 D-Index: 49 scientists 78 D-Index: 39 scientists 79 D-Index: 37 scientists 80 D-Index: 43 scientists 81 D-Index: 41 scientists 82 D-Index: 45 scientists 83 D-Index: 34 scientists 84 D-Index: 40 scientists 85 D-Index: 35 scientists 86 D-Index: 55 scientists 87 D-Index: 24 scientists 88 D-Index: 24 scientists 89 D-Index: 30 scientists 90 D-Index: 23 scientists 91 D-Index: 25 scientists 92 D-Index: 27 scientists 93 D-Index: 27 scientists 94 D-Index: 13 scientists 95 D-Index: 23 scientists 96 D-Index: 12 scientists 97 D-Index: 14 scientists 98 D-Index: 19 scientists 99 D-Index: 16 scientists 100 D-Index: 14 scientists 101 D-Index: 5 scientists 102 D-Index: 21 scientists 103 D-Index: 16 scientists 104 D-Index: 10 scientists 105 D-Index: 7 scientists 106 D-Index: 7 scientists 107 D-Index: 7 scientists 108 D-Index: 6 scientists 109 D-Index: 9 scientists 110 D-Index: 11 scientists 111 D-Index: 12 scientists 112 D-Index: 9 scientists 113 D-Index: 7 scientists 114 D-Index: 3 scientists 115 D-Index: 8 scientists 116 D-Index: 5 scientists 117 D-Index: 11 scientists 118 D-Index: 4 scientists 119 D-Index: 2 scientists 120 D-Index: 5 scientists 121+ D-Index: 100 scientists
30 D-Index 121+

This scientist: 46 D-Index — 46th percentile

46% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 121 D-Index or more.

View D-Index distribution as a table
Number of Ecology and Evolution scientists by D-index, Research.com 2026 ranking edition. Based on 8,381 ranked scientists.
D-Index Scientists This scientist
30 95
31 123
32 191
33 245
34 252
35 244
36 249
37 244
38 254
39 254
40 280
41 274
42 266
43 233
44 248
45 208
46 201 46
47 213
48 207
49 172
50 209
51 199
52 153
53 169
54 163
55 148
56 120
57 146
58 137
59 140
60 104
61 119
62 118
63 99
64 77
65 100
66 86
67 83
68 75
69 94
70 57
71 68
72 59
73 63
74 66
75 60
76 42
77 49
78 39
79 37
80 43
81 41
82 45
83 34
84 40
85 35
86 55
87 24
88 24
89 30
90 23
91 25
92 27
93 27
94 13
95 23
96 12
97 14
98 19
99 16
100 14
101 5
102 21
103 16
104 10
105 7
106 7
107 7
108 6
109 9
110 11
111 12
112 9
113 7
114 3
115 8
116 5
117 11
118 4
119 2
120 5
121+ 100
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Jean-Claude Grégoire D-index placement in Ecology and Evolution in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 8,381 Ecology and Evolution scientists ranked by Research.com in 2026, grouped into 92 ranges running from 30 to 121+ D-Index.
  • Jean-Claude Grégoire, a Ecology and Evolution scholar from Université Libre de Bruxelles, records 46 D-Index - the 46th percentile of the discipline.
  • 46% of ranked Ecology and Evolution scientists score the same or lower than Jean-Claude Grégoire, and about 54% score higher.
  • The median of the discipline falls in the 48 D-Index range, and Jean-Claude Grégoire ranks below the median.
  • The most crowded range is 40 D-Index, holding 280 scientists (3% of the field).
  • 60% of the field sits in the lowest quarter of the value range (up to 52 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 121 D-Index or more, 100 scientists in all (1% of the field).

Overview

Jean-Claude Grégoire is affiliated with the Université Libre de Bruxelles in Belgium. Their research primarily focuses on Agricultural and Biological Sciences, with a significant number of publications spanning 211 works in this field. Within this broad domain, their work delves deeply into specialized subfields such as Insect Science, Ecology, Ecology, Evolution, Behavior and Systematics, Cardiology and Cardiovascular Medicine, and Plant Science.

The scientist's main topics of research cover various aspects of insects and their interactions with plants and environments. Key thematic areas include:

  • Insect-Plant Interactions and Control
  • Research on scale insects
  • Forest Insect Ecology and Management
  • Hymenoptera taxonomy and phylogeny
  • Insect and Pesticide Research
  • Insect behavior and control techniques
  • Phytoplasmas and Hemiptera pathogens

Jean-Claude Grégoire has published research in several scientific venues, frequently contributing to:

  • EFSA Journal
  • bioRxiv (Cold Spring Harbor Laboratory)
  • CJC Open
  • Zenodo (CERN European Organization for Nuclear Research)
  • Canadian Journal of Cardiology

The scientist has worked alongside numerous coauthors in their research endeavors. Frequent collaborators include:

  • Claude Bragard
  • Annemarie Fejer Justesen
  • Juan A Navas-Cortés
  • Roel Potting
  • Philippe Lucien Reignault

Some of their recent academic papers reflect an interdisciplinary reach including cardiovascular and infectious disease contexts. Notable publications are:

  • "Hypertension Canada's 2020 Comprehensive Guidelines for the Prevention, Diagnosis, Risk Assessment, and Treatment of Hypertension in Adults and Children" published in 2020 in Canadian Journal of Cardiology
  • "Colchicine for community-treated patients with COVID-19 (COLCORONA): a phase 3, randomised, double-blinded, adaptive, placebo-controlled, multicentre trial" published in 2021 in The Lancet Respiratory Medicine
  • "Efficacy of Colchicine in Non-Hospitalized Patients with COVID-19" published in 2021 in bioRxiv (Cold Spring Harbor Laboratory)
  • "Cost-effectiveness of low-dose colchicine after myocardial infarction in the Colchicine Cardiovascular Outcomes Trial (COLCOT)" published in 2020 in European Heart Journal - Quality of Care and Clinical Outcomes
  • "2022 Canadian Cardiovascular Society Guideline for Use of GLP-1 Receptor Agonists and SGLT2 Inhibitors for Cardiorenal Risk Reduction in Adults" published in 2022 in Canadian Journal of Cardiology

Best Publications

  • Bark and Wood Boring Insects in Living Trees in Europe, a Synthesis

    François Lieutier;Keith R. Day;Andrea Battisti;Jean-Claude Grégoire

  • The Chemical Ecology of Defense in Arthropods

    Jacques Pasteels;Jean-Claude Grégoire;Martine Rowell-Rahier

  • Invasive alien predator causes rapid declines of native European ladybirds

    Helen E. Roy;Tim Adriaens;Nick J. B. Isaac;Marc Kenis

  • Climate drivers of bark beetle outbreak dynamics in Norway spruce forests

    Lorenzo Marini;Bjørn Økland;Anna Maria Jönsson;Barbara Bentz

  • Guidance on quantitative pest risk assessment

    Michael Jeger;Claude Bragard;David Caffier

  • Bark Beetle Population Dynamics in the Anthropocene: Challenges and Solutions

    Peter H W Biedermann;Peter H W Biedermann;Jörg Müller;Jörg Müller;Jean-Claude Grégoire;Axel Gruppe

  • Damage and Control of Bawbilt Organisms an Overview

    J.-C. GrÉGoire;H.F. Evans

  • Guidance on a harmonised framework for pest risk assessment and the identification and evaluation of pest risk management options by EFSA

    Richard Baker;Thierry Candresse;Erzsébet Dormannsné Simon;Gianni Gilioli

  • Long-distance dispersal and human population density allow the prediction of invasive patterns in the horse-chestnut leafminer Cameraria ohridella

    Marius Gilbert;Jean-Claude Grégoire;Jona Freise;Werner Heitland

  • Natural History and Ecology of Bark Beetles

    Kenneth Francis Raffa;Jean-Claude Grégoire;Staffan B.S. Lindgren

  • Population dynamics in changing environments: the case of an eruptive forest pest species

    Kyrre L Kausrud;Kyrre L Kausrud;Bjørn Okland;Olav Skarpaas;Jean-Claude Grégoire

  • Scientific Opinion on the risk to plant health posed by Xylella fastidiosa in the EU territory, with the identification and evaluation of risk reduction options

    Richard Baker;Claude Bragard;David Caffier;Thierry Candresse

  • Research on Parasitoids and Predators of Scolytidae – A Review

    M. Kenis;B. Wermelinger;J.-C. Grégoire

  • L’agroécologie : trajectoire et potentiel Pour une transition vers des systèmes alimentaires durables

    Pierre M Stassart;Philippe Baret;Jean-Claude Grégoire;Thierry Hance

  • Rapid increase in dispersal during range expansion in the invasive ladybird Harmonia axyridis.

    Eric Lombaert;Eric Lombaert;Eric Lombaert;Arnaud Estoup;B Facon;B. Joubard;B. Joubard;B. Joubard

  • The Greater European Spruce Beetle

    Jean-Claude Grégoire

  • Harmonia + and Pandora +: risk screening tools for potentially invasive plants, animals and their pathogens

    Bram D’hondt;Sonia Vanderhoeven;Sophie Roelandt;Francois Mayer

  • Forecasting Cameraria ohridella invasion dynamics in recently invaded countries: from validation to prediction

    M. Gilbert;S. Guichard;J. Freise;J.-C. Grégoire

  • Scientific Opinion on the risk to plant health posed by Daktulosphaira vitifoliae (Fitch) in the EU territory, with the identification and evaluation of risk reduction options

    Richard Baker;Claude Bragard;Thierry Candresse;Gilioli Gianni

  • Kinetics of larval gregarious behavior in the bark beetle Dendroctonus micans (Coleoptera: Scolytidae)

    Jean-Louis Deneubourg;Jean-Claude Grégoire;E. Le Fort

  • Scientific Opinion on the risks to plant health posed by Bemisia tabaci species complex and viruses it transmits for the EU territory

    Richard Baker;Claude Bragard;Thierry Candresse;Gianni Gilioli

Frequent Co-Authors

Claude Bragard
Claude Bragard Université Catholique de Louvain
Wopke van der Werf
Wopke van der Werf Wageningen University & Research
Vittorio Rossi
Vittorio Rossi Catholic University of the Sacred Heart
Jonathan West
Jonathan West Rothamsted Research
Thierry Candresse
Thierry Candresse University of Bordeaux
Marius Gilbert
Marius Gilbert Université Libre de Bruxelles
Paolo Gonthier
Paolo Gonthier University of Turin
Marco Pautasso
Marco Pautasso European Food Safety Authority
Jacques Pasteels
Jacques Pasteels Université Libre de Bruxelles
Juan A. Navas-Cortés
Juan A. Navas-Cortés Spanish National Research Council

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