World's Best Scientists 2026 revealed!
Karl I. Ugland

Karl I. Ugland

D-Index & Metrics

Ecology and Evolution

D-Index
30
Citations
5385
World Ranking
8304
National Ranking
144

Karl I. Ugland 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 Karl I. Ugland 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: 62 publications — 2nd percentile

2% of scientists in this discipline score the same or lower.

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

Karl I. Ugland 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 Karl I. Ugland 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: 30 D-Index — 1st percentile

1% of scientists in this discipline score the same or lower.

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

Overview

Karl I. Ugland is affiliated with the University of Oslo in Norway. Their research spans several fields, predominantly in Environmental Science, Earth and Planetary Sciences, and Computer Science. Their subfields include Oceanography, Ecology, Global and Planetary Change, Artificial Intelligence, and Computer Networks and Communications.

Their work frequently addresses topics such as Marine Biology and Ecology Research, Coral and Marine Ecosystems Studies, Marine and fisheries research, Marine and coastal plant biology, Gaussian Processes and Bayesian Inference, Distributed Sensor Networks and Detection Algorithms, and Isotope Analysis in Ecology.

Recent publications by Karl I. Ugland include the following papers:

  • The use of taxonomic relationships among species in applied ecological research: Baseline, steps forward and future challenges (2021, Austral Ecology)
  • Coordinated gas release among the physostomous fish sprat (Sprattus sprattus) (2021, Scientific Reports)

The scientist has collaborated with several frequent co-authors, including:

  • Thomas J. Matthews (4 joint publications)
  • Even Tjørve (3 joint publications)
  • Simone Fattorini (2 joint publications)
  • Mark V. Lomolino (1 joint publication)
  • Florent Mazel (1 joint publication)

Karl I. Ugland has also contributed to book publications, notably with Cambridge University Press. One significant work is titled The Species-Area Relationship, published in 2021.

Frequently publishing in venues such as Austral Ecology and Scientific Reports, Karl's research outputs cover a combination of ecological studies and interdisciplinary approaches involving computational methods and ecological data analysis.

Best Publications

  • Species abundance distributions: moving beyond single prediction theories to integration within an ecological framework

    Brian J. McGill;Rampal S. Etienne;John S. Gray;David Alonso

  • The species–accumulation curve and estimation of species richness

    Karl I. Ugland;John S. Gray;Kari E. Ellingsen

  • Lognormal Distributions and the Concept of Community Equilibrium

    Karl I. Ugland;John S. Gray

  • A meta-analysis of species-abundance distributions

    Werner Ulrich;Marcin Ollik;Karl Inne Ugland

  • Changes in the root-associated fungal communities along a primary succession gradient analysed by 454 pyrosequencing

    Rakel Blaalid;Tor Carlsen;Surendra Kumar;Rune Halvorsen

  • Predicting the effects of habitat homogenization on marine biodiversity.

    Simon F. Thrush;John S. Gray;Judi E. Hewitt;Karl I. Ugland

  • Coastal and deep-sea benthic diversities compared

    J. S. Gray;Gary C. B. Poore;K. I. Ugland;Robin S. Wilson

  • Ecological Evaluation Index continuous formula (EEI-c) application: a step forward for functional groups, the formula and reference condition values

    S. Orfanidis;P. Panayotidis;K.I. Ugland

  • High diversity of root associated fungi in both alpine and arctic Dryas octopetala

    Marit Frederikke Markussen Bjorbækmo;Tor Carlsen;Anne Brysting;Trude Vrålstad

  • Influence of trophic position on organochlorine concentrations and compositional patterns in a Marine Food Web

    Anders Ruus;Karl Inne Ugland;Janneche Utne Skaare

  • Organochlorine contaminants in a local marine food chain from Jarfjord, Northern Norway

    A Ruus;K.I Ugland;O Espeland;J.U Skaare;J.U Skaare

  • Harp seal (Phoca groenlandica) invasions in Norwegian coastal waters: age composition and feeding habits

    Tore Haug;Ari B. Krøyer;Kjell T. Nilssen;Karl I. Ugland

  • On plotting species abundance distributions

    John S. Gray;Anders Bjørgesæter;Karl. I. Ugland

  • The impact of rare species on natural assemblages

    John S. Gray;Anders Bjørgesæter;Karl I. Ugland

  • Species accumulation and species area curves - a comment on Scheiner (2003): Correspondence

    John S. Gray;Karl I. Ugland;John Lambshead

  • Modelling dimensionality in species abundance distributions: description and evaluation of the Gambin model

    Karl I. Ugland;P. John D. Lambshead;Brian McGill;John S. Gray

  • ORGANOCHLORINE CONTAMINATION IN DEEP-SEA FISH FROM THE DAVIS STRAIT

    Vidar Berg;Karl I. Ugland;Nils R. Hareide;Paul E. Aspholm

  • On species accumulation and species-area curves

    John S. Gray;Karl I. Ugland;John Lambshead

  • Factors influencing activities of biotransformation enzymes, concentrations and compositional patterns of organochlorine contaminants in members of a marine food web.

    Anders Ruus;Morten Sandvik;Karl I Ugland;Janneche U Skaare;Janneche U Skaare

  • On the Evolution of Reproductive Rates in Microtine Rodents

    Nils Chr. Stenseth;Torgny O. Gustafsson;Lennart Hansson;Karl Inne Ugland

  • Reproduction of female spiny dogfish, Squalus acanthias, in the Oslofjord

    Thomas S. Jones;Karl I. Ugland

  • The gambin model provides a superior fit to species abundance distributions with a single free parameter: evidence, implementation and interpretation

    Thomas J. Matthews;Thomas J. Matthews;Michael K. Borregaard;Karl I. Ugland;Paulo A. V. Borges

Frequent Co-Authors

John S. Gray
John S. Gray University of Oslo
Janneche Utne Skaare
Janneche Utne Skaare Norwegian University of Life Sciences
Robert J. Whittaker
Robert J. Whittaker University of Oxford
Thomas J. Matthews
Thomas J. Matthews University of Birmingham
Antonio Terlizzi
Antonio Terlizzi Stazione Zoologica Anton Dohrn
Marti J. Anderson
Marti J. Anderson Massey University
Michael K. Borregaard
Michael K. Borregaard University of Copenhagen
Stein Kaartvedt
Stein Kaartvedt University of Oslo
Pablo A. Marquet
Pablo A. Marquet Pontificia Universidad Católica de Chile
Nils Chr. Stenseth
Nils Chr. Stenseth University of Oslo

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