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John D. Armstrong

John D. Armstrong

Marine Scotland
United Kingdom

D-Index & Metrics

Ecology and Evolution

D-Index
62
Citations
11195
World Ranking
2111
National Ranking
251

John D. Armstrong 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 John D. Armstrong sits on this spectrum.

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 publications 531+

This scientist: 166 publications — 61st percentile

61% of scientists in this discipline score the same or lower.

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

John D. Armstrong 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 John D. Armstrong sits on this spectrum.

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: 62 D-Index — 76th percentile

76% of scientists in this discipline score the same or lower.

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

Overview

John D. Armstrong is affiliated with Marine Scotland in the United Kingdom and focuses on research primarily within the fields of Environmental Science and Immunology and Microbiology. Their work spans several subfields including Ecology, Nature and Landscape Conservation, Parasitology, Organic Chemistry, and Immunology.

Armstrong's main research topics include Fish Ecology and Management Studies, Parasite Biology and Host Interactions, Freshwater macroinvertebrate diversity and ecology, Bird parasitology and diseases, Parasites and Host Interactions, Fish biology, ecology, and behavior, as well as Aquaculture disease management and microbiota.

Notable recent papers by Armstrong include:

  • Metabolic Rate Interacts with Resource Availability to Determine Individual Variation in Microhabitat Use in the Wild, 2020, The American Naturalist
  • Salmon lice loads on Atlantic salmon smolts associated with reduced welfare and increased population mortalities, 2023, Aquaculture Environment Interactions
  • Nutrient limitation in Atlantic salmon rivers and streams: Causes, consequences, and management strategies, 2022, Aquatic Conservation Marine and Freshwater Ecosystems
  • Inshore and offshore marine migration pathways of Atlantic salmon post-smolts from multiple rivers in Scotland, England, Northern Ireland, and Ireland, 2024, Journal of Fish Biology
  • High summer temperatures are associated with poorer performance of underyearling Atlantic salmon (Salmo salar) in upland streams, 2022, Journal of Fish Biology

Frequent coauthors working alongside Armstrong include SC Ives, Alexander G. Murray, Keith H. Nislow, Neil B. Metcalfe, and Meadhbh Moriarty.

Their publications have appeared most frequently in the following venues:

  • Aquaculture Environment Interactions
  • Journal of Fish Biology
  • The American Naturalist
  • Aquatic Conservation Marine and Freshwater Ecosystems
  • Diseases of Aquatic Organisms

Best Publications

  • Habitat requirements of Atlantic salmon and brown trout in rivers and streams

    J.D Armstrong;P.S Kemp;P.S Kemp;G.J.A Kennedy;M Ladle

  • What causes intraspecific variation in resting metabolic rate and what are its ecological consequences

    T. Burton;S. S. Killen;J. D. Armstrong;N. B. Metcalfe

  • The natural control of salmon and trout populations in streams

    N.J. Milner;J.M. Elliott;J.D. Armstrong;R. Gardiner

  • Physiological effects of dominance hierarchies: laboratory artefacts or natural phenomena?

    K. A. Sloman;J. D. Armstrong

  • Sequence and topology of a model intracellular membrane protein, E1 glycoprotein, from a coronavirus

    John Armstrong;Heiner Niemann;Sjef Smeekens;Peter Rottier

  • Basin‐scale phenology and effects of climate variability on global timing of initial seaward migration of Atlantic salmon (Salmo salar)

    Jaime Otero;Jan Henning L'Abée-Lund;Ted Castro-Santos;Kjell Leonardsson

  • Presence of shelter reduces maintenance metabolism of juvenile salmon

    K. J. Millidine;J. D. Armstrong;N. B. Metcalfe

  • Movements of adult Atlantic salmon in relation to a hydroelectric dam and fish ladder

    A. R. D. Gowans;J. D. Armstrong;I. G. Priede

  • Movements of Atlantic salmon migrating upstream through a fish‐pass complex in Scotland

    A. R. D. Gowans;A. R. D. Gowans;J. D. Armstrong;I. G. Priede;S. Mckelvey

  • Foraging behavior of abyssal grenadier fish: inferences from acoustic tagging and tracking in the North Pacific Ocean

    Imants George Priede;Kenneth L. Smith;John D. Armstrong

  • Spatial strategies of wild Atlantic salmon parr: Exploration and settlement in unfamiliar areas

    John D. Armstrong;Victoria A. Braithwaite;Felicity A. Huntingford

  • Juvenile salmon with high standard metabolic rates have higher energy costs but can process meals faster

    K.J. Millidine;J.D. Armstrong;N.B. Metcalfe

  • A flat‐bed passive integrated transponder antenna array for monitoring behaviour of Atlantic salmon parr and other fish

    J. D. Armstrong;V. A. Braithwaite;P. Rycroft

  • Growth rates of wild stream-dwelling Atlantic salmon correlate with activity and sex but not dominance

    Keith M. Martin-Smith;John D. Armstrong

  • Photographic and acoustic tracking observations of the behaviour of the grenadier Coryphaenoides (Nematonurus) armatus, the eel Synaphobranchus bathybius, and other abyssal demersal fish in the North Atlantic Ocean

    John D. Armstrong;Philip Michael Bagley;Imants George Priede

  • Kin-biased territory overlap and food sharing among Atlantic salmon juveniles

    Sian Wyn Griffiths;Sian Wyn Griffiths;John D. Armstrong

  • Functional and aggregative responses of harbour seals to changes in salmonid abundance.

    Stuart Middlemas;Timothy Roy Barton;J. D. Armstrong;Paul Michael Thompson

  • Direct measurements of metabolism, activity and feeding behaviour of pike, Esox Zucius L., in the wild, by the use of heart rate telemetry

    M. C. Lucas;I. G. Priede;J. D. Armstrong;A. N. Z. Gindy

  • The performance advantage of a high resting metabolic rate in juvenile salmon is habitat dependent

    Donald Reid;John D. Armstrong;Neil B. Metcalfe

  • Direct measurement of active dispersal of food-falls by deep-sea demersal fishes

    Imants George Priede;Philip Michael Bagley;John D. Armstrong;Kenneth L. Smith

  • Critical habitat during the transition from maternal provisioning in freshwater fish, with emphasis on Atlantic salmon (Salmo salar) and brown trout (Salmo trutta)

    J. D. Armstrong;K. H. Nislow

  • Redistribution of juvenile salmonid fishes after localized catastrophic depletion

    J. D. Armstrong;P. E. Shackley;R. Gardiner

Frequent Co-Authors

Neil B. Metcalfe
Neil B. Metcalfe University of Glasgow
Keith H. Nislow
Keith H. Nislow US Forest Service
Imants G. Priede
Imants G. Priede University of Aberdeen
Anne E. Magurran
Anne E. Magurran University of St Andrews
Felicity A. Huntingford
Felicity A. Huntingford University of Glasgow
Martyn C. Lucas
Martyn C. Lucas Durham University
David Gilvear
David Gilvear Plymouth University
Victoria A. Braithwaite
Victoria A. Braithwaite Pennsylvania State University
Sigurd Einum
Sigurd Einum Norwegian University of Science and Technology
Mia O. Hoogenboom
Mia O. Hoogenboom James Cook University

External Links

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Related Online Degrees & Career Pathways

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Best Scientists Citing John D. Armstrong

Steven J. Cooke

Steven J. Cooke

Carleton University

Publications: 74

Imants G. Priede

Imants G. Priede

University of Aberdeen

Publications: 50

Sigurd Einum

Sigurd Einum

Norwegian University of Science and Technology

Publications: 42

James W. A. Grant

James W. A. Grant

Concordia University

Publications: 35

Kim Aarestrup

Kim Aarestrup

Technical University of Denmark

Publications: 35

Jörgen I. Johnsson

Jörgen I. Johnsson

University of Gothenburg

Publications: 35

Neil B. Metcalfe

Neil B. Metcalfe

University of Glasgow

Publications: 33

Shaun S. Killen

Shaun S. Killen

University of Glasgow

Publications: 32

Eva B. Thorstad

Eva B. Thorstad

Norwegian Institute for Nature Research

Publications: 32

Martyn C. Lucas

Martyn C. Lucas

Durham University

Publications: 30

Shinji Makino

Shinji Makino

The University of Texas Medical Branch at Galveston

Publications: 29

Larry Greenberg

Larry Greenberg

Karlstad University

Publications: 27

Scott G. Hinch

Scott G. Hinch

University of British Columbia

Publications: 26

Keith H. Nislow

Keith H. Nislow

US Forest Service

Publications: 26

Michael M. C. Lai

Michael M. C. Lai

Academia Sinica

Publications: 25

Craig R. White

Craig R. White

Monash University

Publications: 25

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