World's Best Scientists 2026 revealed!
Graham P. Wallis

Graham P. Wallis

D-Index & Metrics

Ecology and Evolution

D-Index
52
Citations
7179
World Ranking
3520
National Ranking
39

Graham P. Wallis 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 Graham P. Wallis 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: 106 publications — 23rd percentile

23% of scientists in this discipline score the same or lower.

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

Graham P. Wallis 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 Graham P. Wallis 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: 52 D-Index — 60th percentile

60% of scientists in this discipline score the same or lower.

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

Overview

Graham P. Wallis is affiliated with the University of Otago in New Zealand. Their research spans multiple fields, with a primary focus on environmental science and biochemistry, genetics, and molecular biology. Wallis has contributed notably to subfields including nature and landscape conservation, genetics, molecular biology, aquatic science, and ecology.

Their work addresses a range of topics, prominently featuring genetic diversity and population structure, fish ecology and management studies, and fish biology and ecology studies. Additional areas of research include identification and quantification in food, ecology and vegetation dynamics studies, and species distribution and climate change.

Wallis's recent publications cover diverse ecological and evolutionary themes. Among the notable papers are:

  • "Persisting in a glaciated landscape: Pleistocene microrefugia evidenced by the tree wētā Hemideina maori in central South Island, New Zealand" (2020, Journal of Biogeography)
  • "Genome-wide analysis resolves the radiation of New Zealand's freshwater Galaxias vulgaris complex and reveals a candidate species obscured by mitochondrial capture" (2022, Diversity and Distributions)
  • "A Review of Galaxias (Galaxiidae) Fossils from the Southern Hemisphere" (2020, Diversity)
  • "First evidence of deviation from Mendelian proportions in a conservation programme" (2021, Molecular Ecology)
  • "Evolutionary biogeography of Aotearoa" (2023, Journal of the Royal Society of New Zealand)

Wallis frequently collaborates with other researchers in their field. Frequent co-authors include Jonathan M. Waters, Ludovic Dutoit, Ciarán Campbell, Tania M. King, and Dave Craw. These collaborations have contributed to publications appearing in various scientific journals.

Their research has been published in several recurrent venues, such as:

  • Diversity
  • Journal of Biogeography
  • Diversity and Distributions
  • Journal of the Royal Society of New Zealand
  • Molecular Ecology

Overall, Graham P. Wallis's research presents interdisciplinary intersections between environmental science and molecular biology, emphasizing biodiversity, genetics, and ecological dynamics in New Zealand's unique landscapes and aquatic environments. Their work contributes to the understanding of genetic structures in native species and evolutionary patterns within these ecosystems.

Best Publications

  • New Zealand phylogeography: evolution on a small continent.

    Graham P. Wallis;Steven A. Trewick

  • EVOLUTION AND THE AQUATIC ECOSYSTEM: DEFINING UNIQUE UNITS IN POPULATION CONSERVATION

    Unknown

  • Biogeography of a southern hemisphere freshwater fish: how important is marine dispersal?

    Jonathan M. Waters;Lucette H. Dijkstra;Graham P. Wallis

  • RESTRICTED GENE FLOW IN A MOVING HYBRID ZONE OF THE NEWTS TRITURUS CRISTATUS AND T. MARMORATUS IN WESTERN FRANCE.

    J. W. Arntzen;G. P. Wallis;G. P. Wallis

  • GENES MEET GEOLOGY: FISH PHYLOGEOGRAPHIC PATTERN REFLECTS ANCIENT, RATHER THAN MODERN, DRAINAGE CONNECTIONS

    Jonathan M. Waters;Dave Craw;John H. Youngson;Graham P. Wallis

  • MITOCHONDRIAL-DNA VARIATION IN THE CRESTED NEWT SUPERSPECIES: LIMITED CYTOPLASMIC GENE FLOW AMONG SPECIES.

    Graham P. Wallis;Graham P. Wallis;J. W. Arntzen

  • Oral infection of aedes aegypti with yellow fever virus: geographic variation and genetic considerations

    W. J. Tabachnick;G. P. Wallis;T. H. G. Aitken;B. R. Miller

  • Inbreeding and endangered species management: is New Zealand out of step with the rest of the world?

    Ian G. Jamieson;Graham P. Wallis;James V. Briskie

  • BRIDGING THE “BEECH-GAP”: NEW ZEALAND INVERTEBRATE PHYLOGEOGRAPHY IMPLICATES PLEISTOCENE GLACIATION AND PLIOCENE ISOLATION

    Steven A. Trewick;Graham P. Wallis

  • CLADOGENESIS AND LOSS OF THE MARINE LIFE-HISTORY PHASE IN FRESHWATER GALAXIID FISHES (OSMERIFORMES: GALAXIIDAE)

    Jonathan M. Waters;Graham P. Wallis

  • Molecular phylogenetics and biogeography of galaxiid fishes (Osteichthyes: Galaxiidae): dispersal, vicariance, and the position of Lepidogalaxias salamandroides.

    Jonathan M. Waters;J. Andrés López;Graham P. Wallis

  • Geographic variation and taxonomy of crested newts (Triturus cristatus superspecies): morphological and mitochondrial DNA data

    J.W. Arntzen;Graham P. Wallis

  • Transverse Alpine Speciation Driven by Glaciation.

    Graham P. Wallis;Jonathan M. Waters;Phaedra Upton;David Craw

  • Phylogeographical pattern correlates with Pliocene mountain building in the alpine scree weta (Orthoptera, Anostostomatidae)

    S. A. Trewick;G. P. Wallis;M. Morgan‐Richards

  • Seabird and louse coevolution: complex histories revealed by 12S rRNA sequences and reconciliation analyses.

    Adrian M. Paterson;Graham P. Wallis;Lise J. Wallis;Russell D. Gray

  • Isozyme analysis of Galaxias species (Teleostei: Galaxiidae) from the Taieri River, South Island, New Zealand: a species complex revealed

    Richard M. Allibone;Todd A. Crowl;Jean M. Holmes;Tania M. King

  • Genetic variation and diadromy in some native New Zealand galaxiids (Teleostei: Galaxiidae)

    Richard M. Allibone;Graham P. Wallis

  • Heterozygosity-fitness correlations and their relevance to studies on inbreeding depression in threatened species

    Catherine E Grueber;Graham P Wallis;Ian G Jamieson

  • Gene Trees versus Species Trees: Reassessing Life-History Evolution in a Freshwater Fish Radiation

    Jonathan M. Waters;Diane L. Rowe;Christopher P. Burridge;Christopher P. Burridge;Graham P. Wallis

  • Episodic positive selection in the evolution of avian toll-like receptor innate immunity genes.

    Catherine E. Grueber;Graham P. Wallis;Ian G. Jamieson

  • Penguins, petrels, and parsimony: does cladistic analysis of behavior reflect seabird phylogeny?

    Adrian M. Paterson;Graham P. Wallis;Russell D. Gray

Frequent Co-Authors

Jonathan M. Waters
Jonathan M. Waters University of Otago
Steven A. Trewick
Steven A. Trewick Massey University
Jan W. Arntzen
Jan W. Arntzen Naturalis Biodiversity Center
Christopher P. Burridge
Christopher P. Burridge University of Tasmania
Dave Craw
Dave Craw University of Otago
Ian G. Jamieson
Ian G. Jamieson University of Otago
Mary Morgan-Richards
Mary Morgan-Richards Massey University
Catherine E. Grueber
Catherine E. Grueber University of Sydney
Terry Burke
Terry Burke University of Sheffield
Brent C. Emerson
Brent C. Emerson Spanish National Research Council

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