World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
32
Citations
3819
World Ranking
8097
National Ranking
108

Gerard P. Closs 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 Gerard P. Closs 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: 166 publications — 61st percentile

61% of scientists in this discipline score the same or lower.

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

Gerard P. Closs 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 Gerard P. Closs 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

Gerard P. Closs is affiliated with the University of Otago in New Zealand and is an active researcher in the field of Environmental Science. Their work primarily focuses on various aspects of ecology, particularly related to aquatic environments and fish biology.

The main fields of study for Closs include Environmental Science with an emphasis on subfields such as Ecology, Nature and Landscape Conservation, Aquatic Science, Global and Planetary Change, and Pollution. Their research contributions cover several topics including Fish Ecology and Management Studies, Fish Biology and Ecology Studies, Marine and Fisheries Research, Aquatic Invertebrate Ecology and Behavior, Freshwater Macroinvertebrate Diversity and Ecology, Wildlife Ecology and Conservation, and Fish Biology, Ecology, and Behavior.

Closs has published in multiple venues, with a concentration in New Zealand Journal of Marine and Freshwater Research, Ecology Of Freshwater Fish, Diversity, Marine and Freshwater Research, and Global Ecology and Biogeography.

Frequent co-authors in Closs's research include Malcolm Reid, Matt G. Jarvis, Christoph D. Matthaei, П. Б. Михеев, and Travis Ingram.

Selected recent papers authored or co-authored by Closs include:

  • Morphological Convergence and Divergence in Galaxias Fishes in Lentic and Lotic Habitats (2020), published in Diversity
  • Straying of brown trout in the catchment of a large New Zealand river evaluated by otolith microchemistry (2021), published in Ecology Of Freshwater Fish
  • Phenotypically Induced Intraspecific Variation in the Morphological Development of Wetland and Stream Galaxias gollumoides McDowall and Chadderton (2020), published in Diversity
  • Life history plasticity affects the population structure and distribution of the widespread migratory fish Galaxias brevipinnis (2020), published in Marine and Freshwater Research
  • Agricultural Land-Use Legacy, The Invasive Alga Didymosphenia geminata and Invertebrate Communities in Upland Streams with Natural Flow Regimes (2020), published in Environmental Management

Best Publications

  • Spatial and Temporal Variation in the Structure of an Intermittent-Stream Food Web

    Unknown

  • Arthropod morphospecies versus taxonomic species: a case study with Araneae, Coleoptera, and Lepidoptera

    José G. B. Derraik;Gerard P. Closs;Katharine J. M. Dickinson;Philip Sirvid

  • Behavioural responses of a south‐east Australian floodplain fish community to gradual hypoxia

    Unknown

  • Hydrological disturbance benefits a native fish at the expense of an exotic fish.

    F. Leprieur;M. A. Hickey;C. J. Arbuckle;G. P. Closs

  • Drought, differential mortality and the coexistence of a native and an introduced fish species in a south east Australian intermittent stream

    Unknown

  • Otolith microchemistry of two amphidromous galaxiids across an experimental salinity gradient: A multi-element approach for tracking diadromous migrations

    Andy S. Hicks;Gerard P. Closs;Stephen E. Swearer

  • Behavior of a stream-dwelling fish before, during, and after high-discharge events

    Unknown

  • Life-history plasticity in amphidromous and catadromous fishes: a continuum of strategies

    Unknown

  • Conservation of freshwater fishes

    Gerard P. Closs;Martin Krkosek;Julian D. Olden

  • Life histories of closely related amphidromous and non‐migratory fish species: a trade‐off between egg size and fecundity

    Unknown

  • Diel activity and home range size in relation to food supply in a drift-feeding stream fish

    Unknown

  • Morphospecies and Taxonomic Species Comparison for Hymenoptera

    José G. B. Derraik;José G. B. Derraik;John W. Early;Gerard P. Closs;Katharine J. M. Dickinson

  • Seasonal variation in diel activity and microhabitat use of an endemic New Zealand stream‐dwelling galaxiid fish

    Unknown

  • Relationships between land use and stream invertebrate community structure in a South Island, New Zealand, coastal stream catchment

    Unknown

  • Spatial scale and benthic community organisation in the littoral zones of large oligotrophic lakes: potential for cross‐scale interactions

    Unknown

  • Challenges and opportunities for fish conservation in dam-impacted waters

    Julian D. Olden

  • Migration as an escape from parasitism in New Zealand galaxiid fishes

    Robert Poulin;Gerard P. Closs;Adrian W. T. Lill;Andy S. Hicks

  • Anti-predator response of naive and experienced common bully to chemical alarm cues

    Unknown

  • Non‐diadromous recruitment in coastal populations of common bully (Gobiomorphus cotidianus)

    Unknown

  • Long-term growth and movement in relation to food supply and social status in a stream fish

    Unknown

  • Is diel activity determined by social rank in a drift-feeding stream fish dominance hierarchy?

    Unknown

  • Fragmentation, connectivity and fish species persistence in freshwater ecosystems

    Keith B. Gido;James E. Whitney;Joshuah S. Perkin;Thomas F. Turner

  • Evaluation of visible implant elastomer for individual marking of small perch and common bully

    Unknown

  • Niche partitioning and the effect of interspecific competition on microhabitat use by two sympatric galaxiid stream fishes

    S. K. Crow;S. K. Crow;G. P. Closs;J. M. Waters;D. J. Booker

  • Redesigning a curriculum for inquiry: an ecology case study

    R. A. Spronken-Smith;R. Walker;K. J. M. Dickinson;G. P. Closs

  • Hydroelectric development and translocation of Galaxias brevipinnis: a cloud at the end of the tunnel?

    Jonathan M Waters;Michael Shirley;Gerard P Closs

  • Lake and species specific patterns of non-diadromous recruitment in amphidromous fish: The importance of local recruitment and habitat requirements

    Andy S. Hicks;Matt G. Jarvis;Bruno O. David;Jonathan M. Waters

  • Effects of fine sediment addition and removal on stream invertebrates and fish: a reach-scale experiment

    Javad Ramezani;Lasse Rennebeck;Gerard P. Closs;Christoph D. Matthaei

  • Invertebrate survey of a modified native shrubland, Brookdale Covenant, Rock and Pillar Range, Otago, New Zealand

    José G. B. Derraik;Barbara I. P. Barratt;Phil Sirvid;Roderick P. Macfarlane

  • Stream ecosystem health outcomes of providing information to farmers and adoption of best management practices

    Heather M Rhodes;Gerard P Closs;Colin R Townsend

  • Does social status within a dominance hierarchy mediate individual growth, residency and relocation?

    Abbas Akbaripasand;Martin Krkosek;P. Mark Lokman;Gerard P. Closs

  • Why are freshwater fish so threatened

    Gerard P. Closs;Paul L. Angermeier;William R. T. Darwall;Stephen R. Balcombe

  • Morphological and genetic analysis of Galaxias 'southern' and G. gollumoides: interspecific differentiation and intraspecific structuring

    S. K. Crow;J. M. Waters;G. P. Closs;G. P. Wallis

  • Climate change and freshwater ecosystems in Oceania: An assessment of vulnerability and adaptation opportunities

    Kim Jenkins;R.T. Kingsford;G.P. Closs;Benjamin Wolfenden

  • Microhabitat use by longfin eels in New Zealand streams with contrasting riparian vegetation

    T. L. Broad;C. R. Townsend;G. P. Closs;D. J. Jellyman

  • Multiple scales and the relationship between density and spatial aggregation in littoral zone communities

    Rick J. Stoffels;Gerard P. Closs;Carolyn W. Burns

Frequent Co-Authors

Marc D. Norman
Marc D. Norman Australian National University
Jonathan M. Waters
Jonathan M. Waters University of Otago

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