World's Best Scientists 2026 revealed!
Award Badge
Ecology and Evolution
South Africa
2026

D-Index & Metrics

Ecology and Evolution

D-Index
90
Citations
34551
World Ranking
467
National Ranking
5

Peter G. Ryan 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 Peter G. Ryan 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: 545 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

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

Peter G. Ryan 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 Peter G. Ryan 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: 90 D-Index — 95th percentile

95% 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

  • 2026 - Research.com Ecology and Evolution in South Africa Leader Award
  • 2025 - Research.com Ecology and Evolution in South Africa Leader Award
  • 2022 - Research.com Ecology and Evolution in South Africa Leader Award
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa
  • Fellow of the Royal Society of South Africa

Overview

Peter G. Ryan is affiliated with the University of Cape Town in South Africa. Their research primarily falls within the field of Environmental Science, with a focus on several subfields including Ecology, Nature and Landscape Conservation, Pollution, Ecology, Evolution, Behavior and Systematics, and Genetics.

The main topics Peter G. Ryan has explored in their publications encompass:

  • Avian ecology and behavior
  • Microplastics and Plastic Pollution
  • Wildlife Ecology and Conservation
  • Fish Ecology and Management Studies
  • Recycling and Waste Management Techniques
  • Species Distribution and Climate Change
  • Genetic diversity and population structure

Peter G. Ryan has contributed to multiple research papers, including notable recent publications such as:

  • The physical oceanography of the transport of floating marine debris (2020), published in Environmental Research Letters
  • Dense sampling of bird diversity increases power of comparative genomics (2020), published in Nature
  • Microfibers in oceanic surface waters: A global characterization (2020), published in Science Advances
  • Tracking of marine predators to protect Southern Ocean ecosystems (2020), published in Nature
  • Floating macro- and microplastics around the Southern Ocean: Results from the Antarctic Circumnavigation Expedition (2020), published in Environment International

Frequent co-authors collaborating with Peter G. Ryan include:

  • Guy M. Kirwan
  • Ben J. Dilley
  • Vonica Perold
  • Richard A. Phillips
  • Henri Weimerskirch

Their work has been frequently published in venues such as:

  • Birds of the World
  • Ostrich
  • Marine Pollution Bulletin
  • Environmental Pollution
  • Marine ornithology

Peter G. Ryan has been recognized as a Fellow of the Royal Society of South Africa, highlighting their engagement and standing within the scientific community.

Best Publications

  • Plastic Pollution in the World's Oceans: More than 5 Trillion Plastic Pieces Weighing over 250,000 Tons Afloat at Sea

    Marcus Eriksen;Laurent C. M. Lebreton;Henry S. Carson;Martin Thiel

  • Monitoring the abundance of plastic debris in the marine environment

    Peter G. Ryan;Charles J. Moore;Jan A. van Franeker;Coleen L. Moloney

  • The physical oceanography of the transport of floating marine debris

    Erik van Sebille;Stefano Aliani;Kara Lavender Law;Nikolai Maximenko

  • Biofouling on buoyant marine plastics: An experimental study into the effect of size on surface longevity.

    Francesca M.C. Fazey;Peter G. Ryan

  • Dense sampling of bird diversity increases power of comparative genomics.

    Shaohong Feng;Josefin Stiller;Yuan Deng;Joel Armstrong;Joel Armstrong

  • Microfibers in oceanic surface waters: A global characterization

    Giuseppe Suaria;Aikaterini Achtypi;Vonica Perold;Jasmine R. Lee

  • A Brief History of Marine Litter Research

    Peter G. Ryan

  • Global research priorities to mitigate plastic pollution impacts on marine wildlife

    Amanda C Vegter;Mario Barletta;Cathy A Beck;Jose Carlos Borrero

  • The incidence and characteristics of plastic particles ingested by seabirds

    Peter G. Ryan

  • Offshore diplomacy, or how seabirds mitigate intra-specific competition: a case study based on GPS tracking of Cape gannets from neighbouring colonies

    David Gremillet;Giacomo Dell'omo;Peter G. Ryan;Gerrit Peters

  • Plastic ingestion and PCBs in seabirds: Is there a relationship?

    Peter G. Ryan;A.D. Connell;B.D. Gardner

  • Antarctica’s ecological isolation will be broken by storm-driven dispersal and warming

    Ceridwen I. Fraser;Adele K. Morrison;Andrew Mc C. Hogg;Erasmo C. Macaya

  • A junk-food hypothesis for gannets feeding on fishery waste

    David Grémillet;David Grémillet;Lorien Pichegru;Lorien Pichegru;Grégoire Kuntz;Anthony G Woakes

  • Spatial match–mismatch in the Benguela upwelling zone: should we expect chlorophyll and sea-surface temperature to predict marine predator distributions?

    David Grémillet;David Grémillet;Sue Lewis;Laurent Drapeau;Carl D. Van Der Lingen

  • Effects of ingested plastic on seabird feeding: Evidence from chickens

    P.G. Ryan

  • Does size and buoyancy affect the long-distance transport of floating debris?

    Peter G Ryan

  • Birds of Africa : South of the Sahara

    Ian Sinclair;Peter Ryan

  • Can predation by invasive mice drive seabird extinctions

    Ross M Wanless;Andrea Angel;Richard J Cuthbert;Richard J Cuthbert;Geoff M Hilton

  • Tracking of marine predators to protect Southern Ocean ecosystems

    Mark A. Hindell;Ryan R. Reisinger;Ryan R. Reisinger;Yan Ropert-Coudert;Luis A. Hückstädt

  • Diving Birds in Cold Water: Do Archimedes and Boyle Determine Energetic Costs?

    Rory P. Wilson;Kit Hustler;Peter G. Ryan;Alan E. Burger

  • Exploitation of mesoscale oceanographic features by grey-headed albatross Thalassarche chrysostoma in the southern Indian Ocean

    D. C. Nel;J. R. E. Lutjeharms;E. A. Pakhomov;I. J. Ansorge

Frequent Co-Authors

David Grémillet
David Grémillet Centre national de la recherche scientifique, CNRS
Richard A. Phillips
Richard A. Phillips British Antarctic Survey
Coleen L. Moloney
Coleen L. Moloney University of Cape Town
Alexander L. Bond
Alexander L. Bond Natural History Museum
Yan Ropert-Coudert
Yan Ropert-Coudert Centre national de la recherche scientifique, CNRS
Marthán N Bester
Marthán N Bester University of Pretoria
Akiko Kato
Akiko Kato University of La Rochelle
Henri Weimerskirch
Henri Weimerskirch Centre national de la recherche scientifique, CNRS
Jacob González-Solís
Jacob González-Solís University of Barcelona
Robert J. M. Crawford
Robert J. M. Crawford University of Cape Town

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Advancing your expertise in Ecology and Evolution can open diverse career paths, including roles in research, conservation, and environmental education. For those interested in healthcare and its intersections with ecological sustainability, several online nursing programs offer flexible pathways that allow you to upskill while balancing work and study.

If you’re already an RN seeking advanced practice roles, consider rn to np programs, which allow professional growth while maintaining ecological responsibility in healthcare. Individuals from non-nursing backgrounds might explore direct entry msn programs online that enable a quick transition into nursing, often with a focus on community and environmental health.

Accreditation is vital when selecting an online degree. For instance, you can compare reputable institutions using details such as capella university nursing accreditation to ensure a rigorous and recognized education.

Cost is often a deciding factor. Flexible options like rn to msn bridge programs offer affordable ways to advance your career while considering the broader impacts of your professional development.

Best Scientists Citing Peter G. Ryan

Trending Scientists

Recently Published Articles