World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
62
Citations
15726
World Ranking
2055
National Ranking
748

Katherine Ralls 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 Katherine Ralls 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: 196 publications — 73rd percentile

73% of scientists in this discipline score the same or lower.

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

Katherine Ralls 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 Katherine Ralls 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.

Research.com Recognitions

  • 1989 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Katherine Ralls is affiliated with the Smithsonian Conservation Biology Institute in the United States. Their research spans multiple fields with a focus on biochemistry, genetics, molecular biology, and environmental science. Within these domains, their work particularly addresses genetics, ecology, ecology evolution, behavior and systematics, ecological modeling, and global and planetary change.

The scientist has made contributions to understanding genetic and phenotypic traits in livestock, genetic diversity and population structure, marine animal studies, wildlife ecology and conservation, genetic mapping and diversity in plants and animals, environmental DNA in biodiversity studies, and species distribution in relation to climate change.

Selected recent publications include:

  • Genetic rescue: A critique of the evidence supports maximizing genetic diversity rather than minimizing the introduction of putatively harmful genetic variation (2020, Biological Conservation)
  • A pragmatic approach for integrating molecular tools into biodiversity conservation (2023, Conservation Science and Practice)
  • Hunting cetaceans with sound: a worldwide review (2023, The journal of cetacean research and management. Special issue)
  • An efficient method for simultaneous species, individual, and sex identification via in-solution single nucleotide polymorphism capture from low-quality scat samples (2021, Molecular Ecology Resources)
  • U.S. Pacific Marine Mammal Stock Assessments: 2019 (2020, Lincoln (University of Nebraska))

Frequent co-authors include:

  • Brian L. Cypher
  • Paul Sunnucks
  • Robert C. Lacy
  • Richard Frankham
  • Robert L. Brownell

The scientist's work is often published in venues such as Biological Conservation, Conservation Science and Practice, the journal of cetacean research and management (special issue), Molecular Ecology Resources, and Lincoln (University of Nebraska).

Katherine Ralls was named a Fellow of the American Association for the Advancement of Science (AAAS) in 1989.

Best Publications

  • Estimates of Lethal Equivalents and the Cost of Inbreeding in Mammals

    Katherine Ralls;Jonathan D. Ballou;Alan Templeton

  • Predicting the probability of outbreeding depression

    Richard Frankham;Richard Frankham;Jonathan D. Ballou;Mark D. B. Eldridge;Robert C. Lacy

  • Mammals in which females are larger than males.

    Katherine Ralls

  • Mammalian Scent Marking

    Katherine Ralls

  • SEXUAL DIMORPHISM IN MAMMALS: AVIAN MODELS AND UNANSWERED QUESTIONS

    Katherine Ralls

  • Inbreeding and juvenile mortality in small populations of ungulates

    Katherine Ralls;Kristin Brugger;Jonathan Ballou

  • Genetic Management of Fragmented Animal and Plant Populations

    Richard Frankham;Richard Frankham;Jonathan D Ballou;Katherine Ralls;Mark D B Eldridge

  • Call for a Paradigm Shift in the Genetic Management of Fragmented Populations

    Katherine Ralls;Jonathan D. Ballou;Michele R. Dudash;Mark D. B. Eldridge

  • The role of top carnivores in regulating terrestrial ecosystems

    J. Terborgh;J.A. Estes;P. Paquet;K. Ralls

  • Using stable isotopes to investigate individual diet specialization in California sea otters (Enhydra lutris nereis)

    Seth D. Newsome;M. Tim Tinker;Daniel H. Monson;Olav T. Oftedal

  • Inbreeding leads to extinction

    Richard Frankham;Katherine Ralls

  • Elephant Seal Genetic Variation and the Use of Simulation Models to Investigate Historical Population Bottlenecks

    A. R. Hoelzel;J. Halley;S. J. O'Brien;C. Campagna

  • Implications of different species concepts for conserving biodiversity

    Richard Frankham;Richard Frankham;Jonathan D. Ballou;Michele R. Dudash;Mark D.B. Eldridge

  • Genetic rescue: a critique of the evidence supports maximizing genetic diversity rather than minimizing the introduction of putatively harmful genetic variation

    Katherine Ralls;Paul Sunnucks;Robert C. Lacy;Richard Frankham;Richard Frankham

  • Predation on San Joaquin Kit Foxes by Larger Canids

    Katherine Ralls;Patrick J. White

  • Detection and accuracy rates of dogs trained to find scats of San Joaquin kit foxes (Vulpes macrotis mutica)

    Deborah A. Smith;Katherine Ralls;Aimee Hurt;Brice Adams

  • Geographic variation in size and sexual dimorphism of North American weasels

    Katherine Ralls;Paul H. Harvey

  • Vocalizations and vocal mimicry in captive harbor seals, Phoca vitulina

    Katherine Ralls;Patricia Fiorelli;Sheri Gish

  • A noninvasive method for distinguishing among canid species: amplification and enzyme restriction of DNA from dung

    E. Paxinos;C. McIntosh;Katherine Ralls;Robert C. Fleischer

  • A Practical Guide for Genetic Management of Fragmented Animal and Plant Populations

    Richard Frankham;Richard Frankham;Jonathan D. Ballou;Katherine Ralls;Mark D. B. Eldridge

  • Viable populations for conservation: edited by Michael E. Soulé, Cambridge University Press, 1987. £25/$44.50 hbk, £9.95/$16.95 pbk (xii + 189 pages) ISBN 0 521 33390 (hbk), 0 521 33657 (pbk)

    Katherine Ralls;Jonathan Ballou

Frequent Co-Authors

Jonathan D. Ballou
Jonathan D. Ballou Smithsonian Conservation Biology Institute
Richard Frankham
Richard Frankham Macquarie University
Jesús E. Maldonado
Jesús E. Maldonado Smithsonian Conservation Biology Institute
Robert C. Lacy
Robert C. Lacy Chicago Zoological Society
Mark D. B. Eldridge
Mark D. B. Eldridge Australian Museum
Paul Sunnucks
Paul Sunnucks Monash University
Charles B. Fenster
Charles B. Fenster South Dakota State University
Donald B. Siniff
Donald B. Siniff University of Minnesota
James A. Estes
James A. Estes University of California, Santa Cruz
Robert C. Fleischer
Robert C. Fleischer Smithsonian Conservation Biology Institute

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Related Online Degrees & Career Pathways

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These diverse online degree options provide flexibility and cater to evolving interests and career goals, allowing you to build on your ecology and evolution foundation for impactful roles across various sectors.

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