World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
71
Citations
19959
World Ranking
1295
National Ranking
26

Nils Ryman 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 Nils Ryman 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: 177 publications — 65th percentile

65% of scientists in this discipline score the same or lower.

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

Nils Ryman 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 Nils Ryman 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: 71 D-Index — 85th percentile

85% of scientists in this discipline score the same or lower.

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

Overview

Nils Ryman is affiliated with Stockholm University in Sweden and conducts research primarily in the fields of Biochemistry, Genetics and Molecular Biology, as well as Environmental Science. Their work spans various subfields including Genetics, Nature and Landscape Conservation, Ecology, Molecular Biology, and Plant Science.

Their research focuses on several main topics:

  • Genetic diversity and population structure
  • Genetic and phenotypic traits in livestock
  • Fish Ecology and Management Studies
  • Evolution and Genetic Dynamics
  • Genetic Mapping and Diversity in Plants and Animals
  • Environmental DNA in Biodiversity Studies
  • Wildlife Ecology and Conservation

Ryman has published frequently in several scientific journals, contributing notably to:

  • Conservation Genetics
  • Molecular Ecology
  • Science
  • Evolutionary Applications
  • BMC Genomics

Some of their recent papers include:

  • Post-2020 goals overlook genetic diversity, 2020, Science
  • Authors' Reply to Letter to the Editor: Continued improvement to genetic diversity indicator for CBD, 2021, Conservation Genetics
  • Monitoring genetic diversity with new indicators applied to an alpine freshwater top predator, 2022, Molecular Ecology
  • Moose genomes reveal past glacial demography and the origin of modern lineages, 2020, BMC Genomics
  • What does effective population size tell us about loss of allelic variation?, 2024, Evolutionary Applications

The scientist frequently collaborates with other researchers including Linda Laikre, Fred W. Allendorf, Sara Kurland, Ola Hössjer, and Philip W. Hedrick, among others.

Best Publications

  • Genetic Effects of Cultured Fish on Natural Fish Populations

    Kjetil Hindar;Nils Ryman;Fred Utter

  • Genetic effects of harvest on wild animal populations

    Fred W. Allendorf;Fred W. Allendorf;Fred W. Allendorf;Phillip R. England;Gordon Luikart;Peter A. Ritchie

  • Effects of Supportive Breeding on the Genetically Effective Population Size

    Nils Ryman;Linda Laikre

  • Estimation of census and effective population sizes: the increasing usefulness of DNA-based approaches

    Gordon Luikart;Nils Ryman;David A. Tallmon;Michael K. Schwartz

  • POWSIM: a computer program for assessing statistical power when testing for genetic differentiation

    Nils Ryman;Stefan Palm

  • Compromising genetic diversity in the wild: unmonitored large-scale release of plants and animals

    Linda Laikre;Michael K. Schwartz;Robin S. Waples;Nils Ryman

  • Isozyme loci in brown trout (Salmo trutta L.): detection and interpretation from population data

    Fred W. Allendorf;N. Mitchell;N. Ryman;G. Stahl

  • Population Genetics and Fishery Management

    Nils Ryman;Fred Utter

  • GENETIC STRUCTURE OF NORWAY SPRUCE (PICEA ABIES): CONCORDANCE OF MORPHOLOGICAL AND ALLOZYMIC VARIATION.

    Ulf Lagercrantz;Nils Ryman

  • Protection of intraspecific biodiversity of exploited fishes

    Nils Ryman;Fred Utter;Linda Laikre

  • Power for detecting genetic divergence: differences between statistical methods and marker loci.

    Nils Ryman;Stefan Palm;Carl André;Gary R. Carvalho

  • Temporal allele frequency change and estimation of effective size in populations with overlapping generations.

    Per Erik Jorde;Nils Ryman

  • Unbiased estimator for genetic drift and effective population size.

    Per Erik Jorde;Nils Ryman

  • Population-scale sequencing reveals genetic differentiation due to local adaptation in Atlantic herring

    Sangeet Lamichhaney;Alvaro Martinez Barrio;Nima Rafati;Görel Sundström

  • Biocomplexity in a highly migratory pelagic marine fish, Atlantic herring

    D.E. Ruzzante;S. Mariani;Dorte Bekkevold;C. André

  • Neglect of genetic diversity in implementation of the convention on biological diversity.

    Linda Laikre;Fred W. Allendorf;Laurel C. Aroner;C. Scott Baker

  • Patterns of distribution of biochemical genetic variation in salmonids: differences between species.

    Nils Ryman

  • Genetic Variation in Atlantic Cod (Gadus morhua) Throughout Its Range

    Jarle Mork;Nils Ryman;Gunnar Ståhl;Fred Utter

  • Genetic relationships among landlocked, resident, and anadromous Brown Trout, Salmo trutta L.

    K Hindar;B Jonsson;N Ryman;G Ståhl

  • Genetic changes in hatchery stocks of brown trout (Salmo trutta).

    Nils Ryman;Gunnar Ståhl

  • Population Genetics and Fishery Management.

    A. Jamieson;N. Ryman;F. Utter

  • Compromising genetic diversity in thewild: unmonitored large-scale releaseof plants and animals

    Linda Laikre;Michael K. Schwartz;Robin Waples;Nils Ryman

Frequent Co-Authors

Per Erik Jorde
Per Erik Jorde University of Oslo
Fred W. Allendorf
Fred W. Allendorf University of Montana
Leif Andersson
Leif Andersson Texas A&M University
Carl André
Carl André University of Gothenburg
Gary R. Carvalho
Gary R. Carvalho Bangor University
Ranajit Chakraborty
Ranajit Chakraborty University of North Texas Health Science Center
Daniel E. Ruzzante
Daniel E. Ruzzante Dalhousie University
Stefano Mariani
Stefano Mariani Liverpool John Moores University
Kjetil Hindar
Kjetil Hindar Norwegian Institute for Nature Research
Michael K. Schwartz
Michael K. Schwartz US Forest Service

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