2026 Peter G. Ryan: Ecology and Evolution Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Ecology and Evolution	90	471	447	5	3	545	34551

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

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

5093
Citations
Monitoring the abundance of plastic debris in the marine environment

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

1856
Citations
The physical oceanography of the transport of floating marine debris

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

862
Citations
Biofouling on buoyant marine plastics: An experimental study into the effect of size on surface longevity.

Francesca M.C. Fazey;Peter G. Ryan

583
Citations
Dense sampling of bird diversity increases power of comparative genomics.

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

486
Citations
Microfibers in oceanic surface waters: A global characterization

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

458
Citations
A Brief History of Marine Litter Research

Peter G. Ryan

411
Citations
Global research priorities to mitigate plastic pollution impacts on marine wildlife

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

399
Citations
The incidence and characteristics of plastic particles ingested by seabirds

Peter G. Ryan

360
Citations
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

350
Citations
Plastic ingestion and PCBs in seabirds: Is there a relationship?

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

329
Citations
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

324
Citations
A junk-food hypothesis for gannets feeding on fishery waste

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

309
Citations
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

297
Citations
Effects of ingested plastic on seabird feeding: Evidence from chickens

P.G. Ryan

295
Citations
Does size and buoyancy affect the long-distance transport of floating debris?

Peter G Ryan

295
Citations
Birds of Africa : South of the Sahara

Ian Sinclair;Peter Ryan

293
Citations
Can predation by invasive mice drive seabird extinctions

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

283
Citations
Tracking of marine predators to protect Southern Ocean ecosystems

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

275
Citations
Diving Birds in Cold Water: Do Archimedes and Boyle Determine Energetic Costs?

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

273
Citations
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

263
Citations

Frequent Co-Authors

David Grémillet Centre national de la recherche scientifique, CNRS

Richard A. Phillips British Antarctic Survey

Coleen L. Moloney University of Cape Town

Alexander L. Bond Natural History Museum

Yan Ropert-Coudert Centre national de la recherche scientifique, CNRS

Marthán N Bester University of Pretoria

Akiko Kato University of La Rochelle

Henri Weimerskirch Centre national de la recherche scientifique, CNRS

Jacob González-Solís University of Barcelona

Robert J. M. Crawford University of Cape Town

External Links

Personal website of Peter G. Ryan

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