World's Best Scientists 2026 revealed!
Ryan J. Wasserman

Ryan J. Wasserman

D-Index & Metrics

Ecology and Evolution

D-Index
32
Citations
4020
World Ranking
8078
National Ranking
99

Ryan J. Wasserman 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 Ryan J. Wasserman 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: 132 publications — 41st percentile

41% of scientists in this discipline score the same or lower.

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

Ryan J. Wasserman 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 Ryan J. Wasserman 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: 32 D-Index — 5th percentile

5% of scientists in this discipline score the same or lower.

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

Overview

Ryan J. Wasserman is affiliated with Rhodes University in South Africa and primarily focuses on Environmental Science. Their work encompasses diverse subfields including Ecology, Nature and Landscape Conservation, Public Health, Environmental and Occupational Health, Environmental Chemistry, and Global and Planetary Change.

Their research covers numerous topics with particular emphasis on Fish Ecology and Management Studies, Aquatic Invertebrate Ecology and Behavior, Freshwater Macroinvertebrate Diversity and Ecology, Mosquito-borne Diseases and Control, Aquatic Ecosystems and Phytoplankton Dynamics, Malaria Research and Control, and Parasite Biology and Host Interactions.

Among recent publications authored or co-authored by Wasserman are:

  • Global economic costs of aquatic invasive alien species, 2021, The Science of The Total Environment
  • Spatiotemporal variation in microplastic contamination along a subtropical reservoir shoreline, 2020, Environmental Science and Pollution Research
  • Influence of intra- and interspecific variation in predator-prey body size ratios on trophic interaction strengths, 2020, Ecology and Evolution
  • On the RIP: using Relative Impact Potential to assess the ecological impacts of invasive alien species, 2020, NeoBiota
  • Food web properties vary with climate and land use in South African streams, 2020, Functional Ecology

Frequent publication venues for Wasserman's research include:

  • The Science of The Total Environment (12 publications)
  • Chemistry and Ecology (5 publications)
  • Water (4 publications)
  • Mitochondrial DNA Part B (3 publications)
  • African Journal of Aquatic Science (3 publications)

Collaborations are a significant aspect of Wasserman's work. Frequent co-authors include Tatenda Dalu, Ross N. Cuthbert, Farai Dondofema, Olaf L. F. Weyl, and Casper Nyamukondiwa, with multiple joint publications reflecting ongoing research partnerships.

Best Publications

  • Global economic costs of aquatic invasive alien species

    Ross N. Cuthbert;Zarah Pattison;Nigel G. Taylor;Laura Verbrugge

  • Invader Relative Impact Potential: a new metric to understand and predict the ecological impacts of existing, emerging and future invasive alien species

    Jaimie T.A. Dick;Ciaran Laverty;Jack J. Lennon;Daniel Barrios-O'Neill

  • Functional responses can unify invasion ecology

    Jaimie T. A. Dick;Mhairi E. Alexander;Anthony Ricciardi;Ciaran Laverty

  • Using functional responses to quantify interaction effects among predators

    Ryan J. Wasserman;Mhairi E. Alexander;Mhairi E. Alexander;Mhairi E. Alexander;Tatenda Dalu;Bruce R. Ellender

  • River nutrient water and sediment measurements inform on nutrient retention, with implications for eutrophication.

    Tatenda Dalu;Tatenda Dalu;Ryan J. Wasserman;Mandla L. Magoro;P. William Froneman

  • Assessing drivers of benthic macroinvertebrate community structure in African highland streams: An exploration using multivariate analysis.

    Tatenda Dalu;Ryan J. Wasserman;Jonathan D. Tonkin;Mhairi E. Alexander

  • Cyanobacteria dynamics in a small tropical reservoir: Understanding spatio-temporal variability and influence of environmental variables.

    Tatenda Dalu;Ryan J. Wasserman

  • Spatiotemporal variation in microplastic contamination along a subtropical reservoir shoreline.

    Rendani Mbedzi;Ross N. Cuthbert;Ryan J. Wasserman;Florence M. Murungweni

  • Water or sediment? Partitioning the role of water column and sediment chemistry as drivers of macroinvertebrate communities in an austral South African stream.

    Tatenda Dalu;Ryan J. Wasserman;Ryan J. Wasserman;Jonathan D. Tonkin;Tongayi Mwedzi

  • Novel and Disrupted Trophic Links Following Invasion in Freshwater Ecosystems

    M. C. Jackson;M. C. Jackson;R. J. Wasserman;R. J. Wasserman;Jonathan Grey;A. Ricciardi

  • Macroinvertebrate functional feeding group alterations in response to habitat degradation of headwater Austral streams

    Tinotenda Mangadze;Ryan J. Wasserman;P. William Froneman;Tatenda Dalu

  • Variation partitioning of benthic diatom community matrices: Effects of multiple variables on benthic diatom communities in an Austral temperate river system.

    Tatenda Dalu;Tatenda Dalu;Ryan J. Wasserman;Ryan J. Wasserman;Mandla L. Magoro;Mandla L. Magoro;Tongayi Mwedzi

  • On the RIP: using Relative Impact Potential to assess the ecological impacts of invasive alien species

    J.W.E. Dickey;R.N. Cuthbert;J. South;J.R. Britton

  • Emergent effects of structural complexity and temperature on predator–prey interactions

    Ryan J. Wasserman;Mhairi E. Alexander;Olaf L. F. Weyl;Daniel Barrios‐O'Neill

  • Deeper knowledge of shallow waters: reviewing the invertebrate fauna of southern African temporary wetlands

    Matthew S. Bird;Musa C. Mlambo;Ryan J. Wasserman;Ryan J. Wasserman;Tatenda Dalu

  • Agricultural intensification and drought frequency increases may have landscape-level consequences for ephemeral ecosystems.

    Tatenda Dalu;Ryan J. Wasserman;Ryan J. Wasserman;Mwazvita T. B. Dalu

  • A review of the biology and status of Cape Fold Ecoregion freshwater fishes

    Bruce R. Ellender;Ryan J. Wasserman;Albert Chakona;Paul H. Skelton

  • Ethical considerations for field research on fishes

    Rhett H. Bennett;Bruce R. Ellender;Tuuli Mäkinen;Tshoanelo Miya

  • Influence of intra‐ and interspecific variation in predator–prey body size ratios on trophic interaction strengths

    Ross N. Cuthbert;Ross N. Cuthbert;Ross N. Cuthbert;Ryan J. Wasserman;Ryan J. Wasserman;Tatenda Dalu;Tatenda Dalu;Horst Kaiser

  • Review of the southern African Leptestheriidae (Branchiopoda: Spinicaudata) I: redescription of Leptestheria brevirostris Barnard, 1924 with comments on diagnostic characters.

    D. Christopher Rogers;Murphy Tladi;Ryan J. Wasserman;Elizabeth Meyer-Milne

  • An assessment of the effect of rotenone on selected non-target aquatic fauna

    Tatenda Dalu;Ryan J. Wasserman;Martine Jordaan;Martine Jordaan;William P. Froneman

  • Using functional responses to quantify notonectid predatory impacts across increasingly complex environments

    Ross N. Cuthbert;Ross N. Cuthbert;Tatenda Dalu;Tatenda Dalu;Ryan J. Wasserman;Ryan J. Wasserman;Amanda Callaghan

  • Diet of Largemouth Bass, Micropterus salmoides (Centrarchidae), an Invasive Alien in the Lower Reaches of an Eastern Cape River, South Africa

    R.J. Wasserman;N.A. Strydom;O.L.F Weyl

Frequent Co-Authors

Tatenda Dalu
Tatenda Dalu University of Mpumalanga
Ross N. Cuthbert
Ross N. Cuthbert Queen's University Belfast
Olaf L. F. Weyl
Olaf L. F. Weyl South African Institute for Aquatic Biodiversity
Jaimie T. A. Dick
Jaimie T. A. Dick Queen's University Belfast
Amanda Callaghan
Amanda Callaghan University of Reading
D. Christopher Rogers
D. Christopher Rogers Northeastern State University
Anthony Ricciardi
Anthony Ricciardi McGill University
Alan K. Whitfield
Alan K. Whitfield South African Institute for Aquatic Biodiversity
P.W. Froneman
P.W. Froneman University of Cape Town
Jonathan M. Jeschke
Jonathan M. Jeschke Freie Universität Berlin

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