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Alan T. Critchley

Alan T. Critchley

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 63 1032 948 36 32 210 14752

Alan T. Critchley publications per year

The chart shows the history of publications by Alan T. Critchley between 1981 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Alan T. Critchley published across 45 years, from 1981 to 2025, averaging 5.5 papers a year. Output peaked at 18 publications in 2020. 26 of the 249 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1981 to 2025. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2020. 1981: 1 publication 1982: 1 publication 1983: 6 publications 1984: 1 publication 1985: 0 publications 1986: 1 publication 1987: 3 publications 1988: 0 publications 1989: 0 publications 1990: 3 publications 1991: 2 publications 1992: 0 publications 1993: 1 publication 1994: 5 publications 1995: 0 publications 1996: 2 publications 1997: 9 publications 1998: 4 publications 1999: 4 publications 2000: 0 publications 2001: 6 publications 2002: 2 publications 2003: 3 publications 2004: 5 publications 2005: 3 publications 2006: 5 publications 2007: 7 publications 2008: 6 publications 2009: 11 publications 2010: 7 publications 2011: 7 publications 2012: 10 publications 2013: 6 publications 2014: 9 publications 2015: 10 publications 2016: 4 publications 2017: 8 publications 2018: 8 publications 2019: 17 publications 2020: 18 publications 2021: 15 publications 2022: 6 publications 2023: 7 publications 2024: 18 publications 2025: 8 publications
1981 2025

249 publications in total across all disciplines

View publications per year as a table
Alan T. Critchley: publications per year, 1981 to 2025
Year Publications
1981 1
1982 1
1983 6
1984 1
1985 0
1986 1
1987 3
1988 0
1989 0
1990 3
1991 2
1992 0
1993 1
1994 5
1995 0
1996 2
1997 9
1998 4
1999 4
2000 0
2001 6
2002 2
2003 3
2004 5
2005 3
2006 5
2007 7
2008 6
2009 11
2010 7
2011 7
2012 10
2013 6
2014 9
2015 10
2016 4
2017 8
2018 8
2019 17
2020 18
2021 15
2022 6
2023 7
2024 18
2025 8
Total 249
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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.

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, 206–210 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: 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.

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
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 98 210
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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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.

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, 63 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: 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.

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
54 98
55 79
56 85
57 88
58 91
59 62
60 61
61 59
62 54
63 61 63
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
  • 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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