World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
45
Citations
8523
World Ranking
4818
National Ranking
1667

Roland A. Knapp 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 Roland A. Knapp 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: 86 publications — 10th percentile

10% of scientists in this discipline score the same or lower.

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

Roland A. Knapp 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 Roland A. Knapp 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: 45 D-Index — 44th percentile

44% of scientists in this discipline score the same or lower.

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

Overview

Roland A. Knapp is affiliated with the University of California, Berkeley, United States. Their research primarily focuses on topics related to amphibian and reptile biology, wildlife ecology and conservation, and species distribution and climate change. They also investigate aquaculture disease management and microbiota, fish ecology and management studies, gut microbiota and health, and reproductive tract infections research.

Knapp has contributed to several recent publications that address ecological and microbiological aspects of amphibians and their diseases. Notable papers include:

  • The amphibian microbiome exhibits poor resilience following pathogen-induced disturbance, 2021, The ISME Journal
  • Effectiveness of antifungal treatments during chytridiomycosis epizootics in populations of an endangered frog, 2022, PeerJ
  • Divergent regional evolutionary histories of a devastating global amphibian pathogen, 2021, Proceedings of the Royal Society B Biological Sciences
  • Longitudinal patterns in the skin microbiome of wild, individually marked frogs from the Sierra Nevada, California, 2021, ISME Communications
  • Alien fish eradication from high mountain lakes by multiple removal methods: Estimating residual abundance and eradication probability in open populations, 2021, Journal of Applied Ecology

The scientist collaborates frequently with a core group of researchers. Frequent co-authors include Cheryl J. Briggs, Daniel M. Boiano, Maxwell B. Joseph, Thomas C. Smith, and Andrew P. Rothstein.

Their work is often published in venues relevant to ecology, microbiology, and conservation biology. Frequent publication venues include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Proceedings of the Royal Society B Biological Sciences
  • Conservation Genetics
  • The ISME Journal
  • PeerJ

Knapp's research spans the interdisciplinary fields of environmental science as well as biochemistry, genetics, and molecular biology. Among subfields, their work covers global and planetary change, ecology, molecular biology, ecological modeling, and microbiology.

Best Publications

  • Dynamics of an emerging disease drive large-scale amphibian population extinctions

    Vance T. Vredenburg;Roland A. Knapp;Tate S. Tunstall;Cheryl J. Briggs

  • Enzootic and epizootic dynamics of the chytrid fungal pathogen of amphibians

    Cheryl J. Briggs;Roland A. Knapp;Vance T. Vredenburg

  • Non‐Native Fish Introductions and the Decline of the Mountain Yellow‐Legged Frog from within Protected Areas

    Roland A. Knapp;Kathleen R. Matthews

  • RESISTANCE AND RESILIENCE OF ALPINE LAKE FAUNA TO FISH INTRODUCTIONS

    Roland A. Knapp;Kathleen R. Matthews;Orlando Sarnelle

  • Emerging infectious disease as a proximate cause of amphibian mass mortality.

    Lara J. Rachowicz;Roland A. Knapp;Jess A. T. Morgan;Mary J. Stice

  • INVESTIGATING THE POPULATION‐LEVEL EFFECTS OF CHYTRIDIOMYCOSIS: AN EMERGING INFECTIOUS DISEASE OF AMPHIBIANS

    Cheryl J. Briggs;Vance T. Vredenburg;Roland A. Knapp;Lara J. Rachowicz

  • Population genetics of the frog-killing fungus Batrachochytrium dendrobatidis

    Jess A. T. Morgan;Vance T. Vredenburg;Lara J. Rachowicz;Roland A. Knapp

  • Removal of nonnative fish results in population expansion of a declining amphibian (mountain yellow-legged frog, Rana muscosa).

    Roland A. Knapp;Daniel M. Boiano;Vance T. Vredenburg

  • Alteration of Nutrient Cycles and Algal Production Resulting from Fish Introductions into Mountain Lakes

    Daniel E. Schindler;Roland A. Knapp;Peter R. Leavitt

  • Courtship as an honest indicator of male parental quality in the bicolor damselfish stegastes partitus

    Roland A. Knapp;John T. Kovach

  • Effects of nonnative fish and habitat characteristics on lentic herpetofauna in Yosemite National Park, USA

    Roland A. Knapp

  • Nonnative trout impact an alpine‐nesting bird by altering aquatic‐insect subsidies

    Peter N. Epanchin;Roland A. Knapp;Sharon P. Lawler

  • Multiple stressors and amphibian declines: dual impacts of pesticides and fish on yellow-legged frogs.

    Carlos Davidson;Roland A. Knapp

  • Eradication of Nonnative Fish by Gill Netting from a Small Mountain Lake in California

    Roland A. Knapp;Kathleen R. Matthews

  • DEVELOPING PROBABILISTIC MODELS TO PREDICT AMPHIBIAN SITE OCCUPANCY IN A PATCHY LANDSCAPE

    Roland A. Knapp;Kathleen R. Matthews;Haiganoush K. Preisler;Robert Jellison

  • The Introduction of Nonnative Fish into Wilderness Lakes: Good Intentions, Conflicting Mandates, and Unintended Consequences

    Roland A. Knapp;Paul Stephen Corn;Daniel E. Schindler

  • Large-scale recovery of an endangered amphibian despite ongoing exposure to multiple stressors

    Roland A. Knapp;Gary M. Fellers;Patrick M. Kleeman;David A. W. Miller

  • Concordant molecular and phenotypic data delineate new taxonomy and conservation priorities for the endangered mountain yellow-legged frog

    V. T. Vredenburg;R. Bingham;R. Knapp;J. A. T. Morgan

  • Egg-mimicry as a mating strategy in the fantail darter, Etheostoma flabellare: females prefer males with eggs

    Roland A. Knapp;Robert Craig Sargent

  • BODY SIZES OF CONSUMERS AND THEIR RESOURCES

    Ulrich Brose;Lara Cushing;Eric L. Berlow;Tomas Jonsson

Frequent Co-Authors

Vance T. Vredenburg
Vance T. Vredenburg San Francisco State University
Cheryl J. Briggs
Cheryl J. Briggs University of California, Santa Barbara
Orlando Sarnelle
Orlando Sarnelle Michigan State University
Michael E. Pfrender
Michael E. Pfrender University of Notre Dame
Erica Bree Rosenblum
Erica Bree Rosenblum University of California, Berkeley
Richard J. Williams
Richard J. Williams Vibrant Data Labs
Haiganoush K. Preisler
Haiganoush K. Preisler US Forest Service
Paul Stephen Corn
Paul Stephen Corn United States Geological Survey
Jess A. T. Morgan
Jess A. T. Morgan Department of Primary Industries, Queensland
Staci L. Massey Simonich
Staci L. Massey Simonich Oregon State University

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