World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
63
Citations
25138
World Ranking
2406
National Ranking
184

Len Thomas publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Len Thomas sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 282 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–689 publications: 4 scientists 690+ publications: 100 scientists
41 publications 690+

This scientist: 225 publications — 72nd percentile

72% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

Len Thomas D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Len Thomas sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 198 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 20 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125 D-Index: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 63 D-Index — 75th percentile

75% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

Overview

Len Thomas is affiliated with the University of St Andrews in the United Kingdom. Their research primarily spans Environmental Science and Earth and Planetary Sciences, with a notable focus on subfields such as Ecology, Oceanography, Global and Planetary Change, Atmospheric Science, and Nature and Landscape Conservation.

The scientist's work includes research topics that concentrate on marine and ecological studies. Some of the main topics covered in their body of work are:

  • Marine animal studies overview
  • Underwater Acoustics Research
  • Marine and fisheries research
  • Arctic and Antarctic ice dynamics
  • Wildlife Ecology and Conservation
  • Animal Vocal Communication and Behavior
  • Fish Ecology and Management Studies

Len Thomas has contributed to a variety of research papers, including the following notable recent publications:

  • "Designing line transect surveys for complex survey regions" (2023), published in The "journal of cetacean research and management. Special issue"
  • "Distribution and abundance of marine mammals in the coastal waters of British Columbia, Canada" (2023), published in The "journal of cetacean research and management. Special issue"
  • "Understanding the combined effects of multiple stressors: A new perspective on a longstanding challenge" (2022), published in The Science of The Total Environment
  • "REVIEW Assessing North Atlantic right whale health: threats, and development of tools critical for conservation of the species" (2021), published in Diseases of Aquatic Organisms
  • "A guide to state-space modeling of ecological time series" (2020), published on arXiv (Cornell University)

Frequent collaborators in Len Thomas's research include:

  • Lori H. Schwacke
  • Enrico Pirotta
  • Catriona M. Harris
  • Tiago A. Marques
  • Theoni Photopoulou

Len Thomas regularly publishes research in a selection of dedicated scientific venues. These include:

  • arXiv (Cornell University)
  • The Journal of the Acoustical Society of America
  • The "journal of cetacean research and management. Special issue"
  • Frontiers in Marine Science
  • PLoS ONE

Best Publications

  • Introduction to Distance Sampling: Estimating Abundance of Biological Populations

    S.T. Buckland;D.R. Anderson;K.P. Burnham;J.L. Laake

  • Distance software: design and analysis of distance sampling surveys for estimating population size.

    Len Thomas;Stephen T. Buckland;Eric A. Rexstad;Jeff L. Laake

  • Advanced distance sampling

    S. T. Buckland;D. R. Anderson;Kenneth P. Burnham;J. L. Laake

  • State-space models of individual animal movement.

    Toby A. Patterson;Toby A. Patterson;Len Thomas;Chris Wilcox;Otso Ovaskainen

  • Estimating animal population density using passive acoustics

    Tiago A. Marques;Tiago A. Marques;Len Thomas;Stephen Martin;David Mellinger

  • Retrospective Power Analysis

    Len Thomas

  • Flexible and practical modeling of animal telemetry data: hidden Markov models and extensions

    Roland Langrock;Ruth King;Jason Matthiopoulos;Len Thomas

  • Spatial models for distance sampling data: recent developments and future directions

    David Lawrence Miller;M Louise Burt;Eric Rexstad;Len Thomas

  • State-space models for the dynamics of wild animal populations

    S.T. Buckland;K.B. Newman;L. Thomas;N.B. Koesters

  • Estimating cetacean population density using fixed passive acoustic sensors: an example with Blainville's beaked whales.

    Tiago A. Marques;Len Thomas;Jessica Ward;Nancy A. DiMarzio

  • IMPROVING ESTIMATES OF BIRD DENSITY USING MULTIPLE- COVARIATE DISTANCE SAMPLING

    Tiago A. Marques;Tiago A. Marques;Len Thomas;Steven G. Fancy;Stephen T. Buckland

  • Distance sampling

    Unknown

  • A general discrete‐time modeling framework for animal movement using multistate random walks

    Brett Thomas McClintock;Ruth King;Len Thomas;Jason Matthiopoulos

  • Distance sampling in R

    David L. Miller;Eric Rexstad;Len Thomas;Laura Marshall

  • First direct measurements of behavioural responses by Cuvier's beaked whales to mid-frequency active sonar

    Stacy L. DeRuiter;Brandon L. Southall;Brandon L. Southall;John Calambokidis;Walter M. X. Zimmer

  • Monitoring Long‐Term Population Change: Why are there so Many Analysis Methods?

    Len Thomas

  • Inferences About Landbird Abundance from Count Data: Recent Advances and Future Directions

    James D. Nichols;Len Thomas;Paul B. Conn

  • Understanding the population consequences of disturbance.

    Enrico Pirotta;Enrico Pirotta;Cormac G. Booth;Daniel P. Costa;Erica Fleishman;Erica Fleishman

  • Design and analysis of line transect surveys for primates

    Stephen Terrence Buckland;A J Plumptre;Len Thomas;Eric A Rexstad

  • A guide to state-space modeling of ecological time series

    Marie Auger-Méthé;Ken Newman;Diana J. Cole;Fanny Empacher

  • The importance of statistical power analysis: an example from Animal Behaviour

    Len Thomas;Francis Juanes

  • Using short-term measures of behaviour to estimate long-term fitness of southern elephant seals

    Leslie F. New;James S. Clark;Daniel P. Costa;E. Fleishman;E. Fleishman

  • Metapopulation consequences of site fidelity for colonially breeding mammals and birds

    Jason Matthiopoulos;John Harwood;Len Thomas

  • An interim framework for assessing the population consequences of disturbance

    Stephanie L. King;Robert S. Schick;Carl Donovan;Cormac G. Booth

  • HIDDEN PROCESS MODELS FOR ANIMAL POPULATION DYNAMICS

    K. B. Newman;S. T. Buckland;S. T. Lindley;L. Thomas

  • Field trials of line transect methods applied to estimation of desert tortoise abundance

    David R. Anderson;Kenneth P. Burnham;Bruce C. Lubow;L. E. N. Thomas

  • From echolocation clicks to animal density--acoustic sampling of harbor porpoises with static dataloggers.

    Line A. Kyhn;Jakob Tougaard;Len Thomas;Linda Rosager Duve

  • A UNIFIED FRAMEWORK FOR MODELLING WILDLIFE POPULATION DYNAMICS

    Len Thomas;Stephen T. Buckland;Ken B. Newman;John Harwood

Frequent Co-Authors

Stephen T. Buckland
Stephen T. Buckland University of St Andrews
John Harwood
John Harwood University of St Andrews
Peter L. Tyack
Peter L. Tyack University of St Andrews
Byron J. T. Morgan
Byron J. T. Morgan University of Kent
Olivier Gimenez
Olivier Gimenez Centre national de la recherche scientifique, CNRS
Jay Barlow
Jay Barlow National Oceanic and Atmospheric Administration
Patrick J. O. Miller
Patrick J. O. Miller University of St Andrews
Jason Matthiopoulos
Jason Matthiopoulos University of Glasgow
Erica Fleishman
Erica Fleishman Oregon State University
Brandon L. Southall
Brandon L. Southall University of California, Santa Cruz

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