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Gregory J. Robertson

D-Index & Metrics

Ecology and Evolution

D-Index
49
Citations
7438
World Ranking
4088
National Ranking
279

Gregory J. Robertson 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 Gregory J. Robertson 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: 218 publications — 79th percentile

79% of scientists in this discipline score the same or lower.

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

Gregory J. Robertson 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 Gregory J. Robertson 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: 49 D-Index — 53rd percentile

53% of scientists in this discipline score the same or lower.

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

Overview

Gregory J. Robertson is affiliated with Environment and Climate Change Canada in Canada and has contributed extensively to environmental science, with particular emphasis on ecology and epidemiology within this broader field.

The scientist's primary research areas span Environmental Science, with a strong focus on the subfields of Ecology, Epidemiology, Infectious Diseases, Global and Planetary Change, and Nature and Landscape Conservation. Their work covers topics including:

  • Avian ecology and behavior
  • Influenza Virus Research Studies
  • Wildlife Ecology and Conservation
  • Viral Infections and Vectors
  • Marine animal studies overview
  • Marine and fisheries research
  • Isotope Analysis in Ecology

Recent papers illustrate a focus on avian influenza and its ecological impacts. Key publications include:

  • "Transatlantic spread of highly pathogenic avian influenza H5N1 by wild birds from Europe to North America in 2021" (2022) in Scientific Reports
  • "High pathogenicity avian influenza (H5N1) in Northern Gannets (Morus bassanus): Global spread, clinical signs and demographic consequences" (2023) in Ibis
  • "Influenza A viruses remain infectious for more than seven months in northern wetlands of North America" (2020) in Proceedings of the Royal Society B Biological Sciences
  • "Seasonal variation of mercury contamination in Arctic seabirds: A pan-Arctic assessment" (2020) in The Science of The Total Environment
  • "Long-Term Changes in Terrestrial Vegetation Linked to Shifts in a Colonial Seabird Population" (2020) in Ecosystems

Frequent publication venues include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Birds of the World
  • Avian Conservation and Ecology
  • Proceedings of the Royal Society B Biological Sciences
  • The Science of The Total Environment

Collaboration plays a notable role in their work, with frequent co-authors being Mark L. Mallory, Andrew S. Lang, William A. Montevecchi, Jennifer F. Provencher, and Sabina I. Wilhelm.

Best Publications

  • Winter philopatry in migratory waterfowl

    Gregory J. Robertson;Fred Cooke;Fred Cooke

  • A Synthesis of Human-related Avian Mortality in Canada

    Anna M. Calvert;Christine A. Bishop;Richard D. Elliot;Elizabeth A. Krebs

  • ASSESSING SEABIRD MORTALITY FROM CHRONIC OIL DISCHARGES AT SEA

    Francis K. Wiese;Gregory J. Robertson

  • Changes in Canadian seabird populations and ecology since 1970 in relation to changes in oceanography and food webs

    Anthony J. GastonA.J. Gaston;Douglas F. BertramD.F. Bertram;Andrew W. BoyneA.W. Boyne;John W. ChardineJ.W. Chardine

  • Fluctuations in circumpolar seabird populations linked to climate oscillations

    David B. Irons;Tycho Anker-Nilssen;Anthony J. Gaston;G. Vernon Byrd

  • Tracking seabirds to identify ecologically important and high risk marine areas in the western North Atlantic

    W.A. Montevecchi;A. Hedd;L. McFarlane Tranquilla;D.A. Fifield

  • Common Eider (Somateria mollissima)

    R. Ian Goudie;Gregory J. Robertson;Austin Reed;A. Poole

  • Ocean-wide Drivers of Migration Strategies and Their Influence on Population Breeding Performance in a Declining Seabird.

    Annette L. Fayet;Robin Freeman;Tycho Anker-Nilssen;Antony Diamond

  • Spatial ecotoxicology: migratory Arctic seabirds are exposed to mercury contamination while overwintering in the northwest Atlantic.

    Jérôme Fort;Gregory J. Robertson;David Grémillet;David Grémillet;Gwendoline Traisnel

  • Evidence of Population Declines among Common Eiders Breeding in the Belcher Islands, Northwest Territories

    Gregory J. Robertson;H. Grant Gilchrist

  • Impacts of chronic marine oil pollution and the murre hunt in Newfoundland on thick-billed murre Uria lomvia populations in the eastern Canadian Arctic

    Francis K. Wiese;Gregory J. Robertson;Anthony J. Gaston

  • Observations of Marine Birds and Mammals Wintering at Polynyas and Ice Edges in the Belcher Islands, Nunavut, Canada

    H. Grant Gilchrist;Gregory J. Robertson

  • Annual adult survival of Least Auklets (Aves, Alcidae) varies with large-scale climatic conditions of the North Pacific Ocean.

    Ian L. Jones;Fiona M. Hunter;Gregory J. Robertson

  • Migration and wintering of a declining seabird, the thick-billed murre Uria lomvia, on an ocean basin scale: Conservation implications

    Morten Frederiksen;Sébastien Descamps;Kjell Einar Erikstad;Anthony J. Gaston

  • Unintended consequences: how the recovery of sea eagle Haliaeetus spp. populations in the northern hemisphere is affecting seabirds

    Mark J. Hipfner;Louise K. Blight;Roy W. Lowe;Sabina I. Wilhelm

  • Extensive Geographic Mosaicism in Avian Influenza Viruses from Gulls in the Northern Hemisphere

    Michelle Wille;Gregory J. Robertson;Hugh Whitney;Mary Anne Bishop

  • Multiple-colony winter habitat use by murres Uria spp. in the Northwest Atlantic Ocean: implications for marine risk assessment

    Laura A. McFarlane Tranquilla;William A. Montevecchi;April Hedd;David A. Fifield

  • Black-legged Kittiwake (Rissa tridactyla)

    Scott A. Hatch;Gregory J. Robertson;Pat Herron Baird

  • Factors affecting nest site selection and nesting success in the Common Eider Somateria mollissima

    Gregory J. Robertson

  • Ingestion of plastic marine debris by Common and Thick-billed Murres in the northwestern Atlantic from 1985 to 2012.

    Alexander L. Bond;Jennifer F. Provencher;Richard D. Elliot;Pierre C. Ryan

  • Harlequin Duck (Histrionicus histrionicus)

    Gregory J. Robertson;R. Ian Goudie;A. Poole;F. Gill

Frequent Co-Authors

Mark L. Mallory
Mark L. Mallory Acadia University
William A. Montevecchi
William A. Montevecchi Memorial University of Newfoundland
H. Grant Gilchrist
H. Grant Gilchrist Carleton University
Andrew S. Lang
Andrew S. Lang Memorial University of Newfoundland
Alexander L. Bond
Alexander L. Bond Natural History Museum
Ian L. Jones
Ian L. Jones Memorial University of Newfoundland
Jennifer F. Provencher
Jennifer F. Provencher Government of Canada
Anthony J. Gaston
Anthony J. Gaston Environment and Climate Change Canada
Antony W. Diamond
Antony W. Diamond University of New Brunswick
Anders Mosbech
Anders Mosbech Aarhus University

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These options allow Ecology and Evolution graduates to apply scientific skills beyond traditional roles, positioning them for impactful careers in healthcare, research, and beyond.

Best Scientists Citing Gregory J. Robertson

Mark L. Mallory

Mark L. Mallory

Acadia University

Publications: 118

H. Grant Gilchrist

H. Grant Gilchrist

Carleton University

Publications: 62

Jennifer F. Provencher

Jennifer F. Provencher

Government of Canada

Publications: 46

Alexander L. Bond

Alexander L. Bond

Natural History Museum

Publications: 42

David Grémillet

David Grémillet

Centre national de la recherche scientifique, CNRS

Publications: 41

William A. Montevecchi

William A. Montevecchi

Memorial University of Newfoundland

Publications: 41

Richard A. Phillips

Richard A. Phillips

British Antarctic Survey

Publications: 39

Birgit M. Braune

Birgit M. Braune

Carleton University

Publications: 38

Kjell Einar Erikstad

Kjell Einar Erikstad

Norwegian Institute for Nature Research

Publications: 37

Anthony J. Gaston

Anthony J. Gaston

Environment and Climate Change Canada

Publications: 35

Daniel Esler

Daniel Esler

United States Geological Survey

Publications: 35

Keith A. Hobson

Keith A. Hobson

University of Western Ontario

Publications: 33

Jérôme Fort

Jérôme Fort

Centre national de la recherche scientifique, CNRS

Publications: 30

Hallvard Strøm

Hallvard Strøm

Norwegian Polar Institute

Publications: 30

Ian L. Jones

Ian L. Jones

Memorial University of Newfoundland

Publications: 27

Anders Mosbech

Anders Mosbech

Aarhus University

Publications: 25

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