World's Best Scientists 2026 revealed!
Alan T. Critchley

Alan T. Critchley

D-Index & Metrics

Plant Science and Agronomy

D-Index
63
Citations
14752
World Ranking
1032
National Ranking
36

Alan T. Critchley 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 Alan T. Critchley 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: 210 publications — 80th percentile

80% of scientists in this discipline score the same or lower.

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

Alan T. Critchley 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 Alan T. Critchley 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: 63 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.

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Botany
  • Enzyme

His scientific interests lie mostly in Botany, Ascophyllum, Ecology, Kappaphycus and Food science. His Botany study incorporates themes from Salinity and Carrageenan. He works mostly in the field of Ascophyllum, limiting it down to topics relating to Arabidopsis and, in certain cases, Arabidopsis thaliana, Auxin, Plant physiology and Chlorophyll, as a part of the same area of interest.

As a part of the same scientific study, Alan T. Critchley usually deals with the Ecology, concentrating on Agroforestry and frequently concerns with Environmental impact assessment, Nutrient content and Coral Triangle. Alan T. Critchley has included themes like Chromatography, Chondracanthus, Epiphyte and Eucheuma in his Kappaphycus study. In his study, Animal feed and Proximate analysis is strongly linked to Kelp, which falls under the umbrella field of Food science.

His most cited work include:

  • Seaweed Extracts as Biostimulants of Plant Growth and Development (664 citations)
  • Identification of selected seaweed polysaccharides (phycocolloids) by vibrational spectroscopy (FTIR-ATR and FT-Raman) (230 citations)
  • Variability of Iodine Content in Common Commercially Available Edible Seaweeds (180 citations)

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

Alan T. Critchley mainly investigates Botany, Ascophyllum, Algae, Kappaphycus and Ecology. His Botany research incorporates elements of Horticulture and Carrageenan. His work carried out in the field of Ascophyllum brings together such families of science as Arabidopsis thaliana, Food science, Propagule, Arabidopsis and Plant physiology.

His Kappaphycus study combines topics in areas such as Biomass, Agriculture and Eucheuma. His research integrates issues of Agroforestry and Biotechnology in his study of Agriculture. The Sargassum muticum, Range and Flora research Alan T. Critchley does as part of his general Ecology study is frequently linked to other disciplines of science, such as East coast, therefore creating a link between diverse domains of science.

He most often published in these fields:

  • Botany (40.67%)
  • Ascophyllum (23.33%)
  • Algae (19.33%)

What were the highlights of his more recent work (between 2016-2021)?

  • Ascophyllum (23.33%)
  • Agroforestry (8.67%)
  • Algae (19.33%)

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

Ascophyllum, Agroforestry, Algae, Agriculture and Ecology are his primary areas of study. His work carried out in the field of Ascophyllum brings together such families of science as Thallus, Kappaphycus, Kappaphycus alvarezii and Horticulture. His Thallus study results in a more complete grasp of Botany.

His Botany research includes themes of Intertidal ecology and Seasonality. His Algae research integrates issues from Kelp and Carrageenan. His Agriculture study incorporates themes from Terrestrial plant, Biotechnology and Toxicology.

Between 2016 and 2021, his most popular works were:

  • Seaweed production: overview of the global state of exploitation, farming and emerging research activity (178 citations)
  • Sustainable harvesting of wild seaweed resources. (52 citations)
  • Ascophyllum nodosum-Based Biostimulants: Sustainable Applications in Agriculture for the Stimulation of Plant Growth, Stress Tolerance, and Disease Management. (50 citations)

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

  • Ecology
  • Botany
  • Enzyme

Alan T. Critchley mainly focuses on Ascophyllum, Kappaphycus, Agriculture, Agroforestry and Horticulture. His Ascophyllum study integrates concerns from other disciplines, such as Arabidopsis thaliana, Arabidopsis, Abiotic component and Plant physiology. Biotic stress, Botany and Thallus is closely connected to Biomass in his research, which is encompassed under the umbrella topic of Kappaphycus.

His study in Agriculture is interdisciplinary in nature, drawing from both Nutrient and Aquatic organisms. Alan T. Critchley combines subjects such as Productivity and Antioxidant with his study of Horticulture. His Carrageenan research focuses on Algae and how it connects with Microbiology.

Best Publications

  • Seaweed Extracts as Biostimulants of Plant Growth and Development

    Wajahatullah Khan;Wajahatullah Khan;Usha P. Rayirath;Sowmyalakshmi Subramanian;Mundaya N. Jithesh

  • Seaweed production: overview of the global state of exploitation, farming and emerging research activity

    Alejandro H. Buschmann;Carolina Camus;Javier Infante;Amir Neori

  • Identification of selected seaweed polysaccharides (phycocolloids) by vibrational spectroscopy (FTIR-ATR and FT-Raman)

    Leonel Pereira;Ana M. Amado;Alan T. Critchley;Fred van de Velde

  • Ascophyllum nodosum -Based Biostimulants: Sustainable Applications in Agriculture for the Stimulation of Plant Growth, Stress Tolerance, and Disease Management.

    Pushp Sheel Shukla;Emily Grace Mantin;Mohd Adil;Sruti Bajpai

  • Variability of Iodine Content in Common Commercially Available Edible Seaweeds

    Jane Teas;Sam Pino;Alan Critchley;Lewis E. Braverman

  • Regulation of Phytohormone Biosynthesis and Accumulation in Arabidopsis Following Treatment with Commercial Extract from the Marine Macroalga Ascophyllum nodosum

    Owen S. D. Wally;Alan T. Critchley;David Hiltz;James S. Craigie

  • Prospects and challenges for industrial production of seaweed bioactives.

    Jeff T. Hafting;James S. Craigie;Dagmar B. Stengel;Rafael R. Loureiro

  • Rapid bioassays to evaluate the plant growth promoting activity of Ascophyllum nodosum (L.) Le Jol. using a model plant, Arabidopsis thaliana (L.) Heynh

    Prasanth Rayorath;Mundaya N. Jithesh;Amir Farid;Wajahatullah Khan

  • Seaweeds for animal production use

    F. D. Evans;A. T. Critchley

  • Sustainable harvesting of wild seaweed resources.

    Michéal Mac Monagail;Lynn Cornish;Liam Morrison;Rita Araújo

  • Commercial extract of the brown seaweed Ascophyllum nodosum enhances phenolic antioxidant content of spinach (Spinacia oleracea L.) which protects Caenorhabditis elegans against oxidative and thermal stress

    Di Fan;D. Mark Hodges;Junzeng Zhang;Christopher W. Kirby

  • Distribution and symptoms of epiphyte infection in major carrageenophyte-producing farms

    Charles Santhanaraju Vairappan;Chong Sim Chung;A. Q. Hurtado;Flower E. Soya

  • Carrageenans from Red Seaweeds As Promoters of Growth and Elicitors of Defense Response in Plants

    Pushp S. Shukla;Tudor Borza;Alan T. Critchley;Balakrishnan Prithiviraj

  • Seaweed resources of the world

    Alan T. Critchley;正夫 大野

  • On-land cultivation of functional seaweed products for human usage

    Jeff T. Hafting;Alan T. Critchley;M. Lynn Cornish;Scott A. Hubley

  • Lipophilic components of the brown seaweed, Ascophyllum nodosum , enhance freezing tolerance in Arabidopsis thaliana

    Prasanth Rayirath;Bernhard Benkel;D. Mark Hodges;Paula Allan-Wojtas

  • Seaweed extract improve drought tolerance of soybean by regulating stress-response genes

    Pushp S Shukla;Katy Shotton;Erin Norman;Will Neily

  • A Commercial Extract of Brown Macroalga (Ascophyllum nodosum) Affects Yield and the Nutritional Quality of Spinach In Vitro

    Di Fan;D. Mark Hodges;Alan T. Critchley;Balakrishnan Prithiviraj

  • Transcriptional and metabolomic analysis of Ascophyllum nodosum mediated freezing tolerance in Arabidopsis thaliana

    Prasanth Nair;Saveetha Kandasamy;Junzeng Zhang;Xiuhong Ji

  • Cultivation of tropical red seaweeds in the BIMP-EAGA region

    Anicia Q. Hurtado;Grevo S. Gerung;Suhaimi Md Yasir;Alan T. Critchley

  • Occurrence of Polysiphonia Epiphytes in Kappaphycus Farms at Calaguas Is., Camarines Norte, Phillippines

    A. Q. Hurtado;A. T. Critchley;A. Trespoey;G. Bleicher Lhonneur

Frequent Co-Authors

Balakrishnan Prithiviraj
Balakrishnan Prithiviraj Dalhousie University
Charles Yarish
Charles Yarish University of Connecticut
Alejandro H. Buschmann
Alejandro H. Buschmann University of Los Lagos
Nicholas A. Paul
Nicholas A. Paul University of the Sunshine Coast
Michael A. Borowitzka
Michael A. Borowitzka Murdoch University
Michael D. Guiry
Michael D. Guiry University of Galway
Jennifer E. Smith
Jennifer E. Smith University of California, San Diego
Donald L. Smith
Donald L. Smith McGill University
Liam Morrison
Liam Morrison University of Galway
J. L. Pérez-Lloréns
J. L. Pérez-Lloréns University of Cádiz

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