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Alan Warren

D-Index & Metrics

Ecology and Evolution

D-Index
47
Citations
11367
World Ranking
4359
National Ranking
483

Alan Warren 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 Alan Warren 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: 385 publications — 96th percentile

96% of scientists in this discipline score the same or lower.

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

Alan Warren 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 Alan Warren 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: 47 D-Index — 49th percentile

49% of scientists in this discipline score the same or lower.

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

Overview

Alan Warren is affiliated with the Natural History Museum in the United Kingdom. Their research spans multiple fields, focusing predominantly on Environmental Science and Biochemistry, Genetics, and Molecular Biology. Within these, their work extends into several subfields including Ecology, Molecular Biology, Environmental Chemistry, Oceanography, and Pollution.

The scientist's research topics cover a range of areas related to microbial and environmental studies. These include:

  • Microbial Community Ecology and Physiology
  • Protist diversity and phylogeny
  • Methane Hydrates and Related Phenomena
  • Marine and coastal ecosystems
  • Genomics and Phylogenetic Studies
  • Environmental DNA in Biodiversity Studies
  • Marine Biology and Ecology Research

Alan Warren has contributed extensively to publishing, with frequent appearances in several scientific journals. The most common venues for their work include:

  • European Journal of Protistology
  • Frontiers in Microbiology
  • Marine Life Science & Technology
  • Marine Pollution Bulletin
  • Zoological Journal of the Linnean Society

Their recent papers include the following:

  • "Biodiversity of freshwater ciliates (Protista, Ciliophora) in the Lake Weishan Wetland, China: the state of the art" (2022), published in Marine Life Science & Technology
  • "Morphology, taxonomy and molecular phylogeny of three marine peritrich ciliates, including two new species: Zoothamnium apoarbuscula n. sp. and Z. apohentscheli n. sp. (Protozoa, Ciliophora, Peritrichia)" (2020), published in Marine Life Science & Technology
  • "New contributions to the phylogeny of the ciliate class Heterotrichea (Protista, Ciliophora): analyses at family-genus level and new evolutionary hypotheses" (2020), published in Science China Life Sciences
  • "Does the Gonostomum-patterned oral apparatus in hypotrichia carry a phylogenetic signal? Evidence from morphological and molecular data based on extended taxon sampling using three nuclear genes (Ciliophora, Spirotrichea)" (2020), published in Science China Life Sciences
  • "A new hypotrich ciliate, Oxytricha xianica sp. nov., with notes on the morphology and phylogeny of a Chinese population of Oxytricha auripunctata Blatterer & Foissner, 1988 (Ciliophora, Oxytrichidae)" (2021), published in Marine Life Science & Technology

The scientist has collaborated frequently with a number of coauthors over their career. These include:

  • Saleh Alfarraj
  • Weibo Song
  • Borong Lu
  • Xiaozhong Hu
  • Henglong Xu

Best Publications

  • The magnitude of global marine species diversity

    Ward Appeltans;Shane T. Ahyong;Shane T. Ahyong;Gary Anderson;Martin V. Angel

  • The All-Data-Based Evolutionary Hypothesis of Ciliated Protists with a Revised Classification of the Phylum Ciliophora (Eukaryota, Alveolata).

    Feng Gao;Alan Warren;Qianqian Zhang;Jun Gong

  • Investigation of Escherichia coli removal in various designs of subsurface flow wetlands used for wastewater treatment

    O Decamp;A Warren

  • An approach to analyzing spatial patterns of planktonic ciliate communities for monitoring water quality in Jiaozhou Bay, northern China.

    Yong Jiang;Henglong Xu;Xiaozhong Hu;Mingzhuang Zhu

  • Periphytic ciliate colonization: annual cycle and responses to environmental conditions

    Jun Gong;Weibo Song;Alan Warren

  • Effect of bone meal (calcium phosphate) amendments on metal release from contaminated soils--a leaching column study.

    M.E Hodson;E Valsami-Jones;J.D Cotter-Howells;W.E Dubbin

  • Protistan communities in aquifers: a review

    Gianfranco Novarino;Alan Warren;Helen Butler;Gail Lambourne

  • Bacterivory in ciliates isolated from constructed wetlands (reed beds) used for wastewater treatment

    Olivier Decamp;Alan Warren

  • "Candidatus Sonnebornia yantaiensis", a member of candidate division OD1, as intracellular bacteria of the ciliated protist Paramecium bursaria (Ciliophora, Oligohymenophorea).

    Jun Gong;Jun Gong;Yao Qing;Xiaohong Guo;Alan Warren

  • Taxonomic Redescriptions of Two Ciliates, Protogastrostyla pulchra n. g., n. comb. and Hemigastrostyla enigmatica (Ciliophora: Spirotrichea, Stichotrichia), with Phylogenetic Analyses Based on 18S and 28S rRNA Gene Sequences

    Jun Gong;Jun Gong;Jun Gong;Se-Joo Kim;Sun-Young Kim;Gi-Sik Min

  • Beyond the "Code": A Guide to the Description and Documentation of Biodiversity in Ciliated Protists (Alveolata, Ciliophora).

    Alan Warren;David J. Patterson;Micah Dunthorn;John C. Clamp

  • The role of ciliated protozoa in subsurface flow wetlands and their potential as bioindicators

    O. Decamp;A. Warren;R. Sanchez

  • Analysis of the Internal Transcribed Spacer 2 (ITS2) Region of Scuticociliates and Related Taxa (Ciliophora, Oligohymenophorea) to Infer their Evolution and Phylogeny

    Miao Miao;Alan Warren;Weibo Song;Shi Wang

  • Planktonic protist communities in a semi-enclosed mariculture pond : structural variation and correlation with environmental conditions

    Henglong Xu;Weibo Song;Alan Warren;Khaled A. S. Al-Rasheid

  • Protozoan predation as a mechanism for the removal of cryptosporidium oocysts from wastewaters in constructed wetlands.

    R. Stott;Eric May;E. Matsushita;A. Warren

  • Diversity of free-living marine ciliates (Alveolata, Ciliophora): Faunal studies in coastal waters of China during the years 2011–2016

    Weiwei Liu;Jiamei Jiang;Yuan Xu;Xuming Pan

  • Shifts in diversity and community structure of endophytic bacteria and archaea across root, stem and leaf tissues in the common reed, Phragmites australis, along a salinity gradient in a marine tidal wetland of northern China

    Bin Ma;Xiaofei Lv;Alan Warren;Jun Gong

  • An approach to determining the sampling effort for analyzing biofilm-dwelling ciliate colonization using an artificial substratum in coastal waters.

    Henglong Xu;Wei Zhang;Yong Jiang;Mingzhuang Zhu

  • Biodiversity of freshwater ciliates (Protista, Ciliophora) in the Lake Weishan Wetland, China: the state of the art

    Unknown

  • Functional groups of marine ciliated protozoa and their relationships to water quality

    Yong Jiang;Henglong Xu;Xiaozhong Hu;Alan Warren

  • Morphology and SSU rRNA gene-based phylogeny of two marine Euplotes species, E. orientalis spec. nov. and E. raikovi (Ciliophora, Euplotida).

    Jiamei Jiang;Qianqian Zhang;Alan Warren;Khaled A.S. Al-Rasheid

  • Predation of Cryptosporidium oocysts by protozoa and rotifers: implications for water quality and public health.

    R. Stott;Eric May;E. Ramirez;A. Warren

Frequent Co-Authors

Weibo Song
Weibo Song Ocean University of China
Khaled A. S. Al-Rasheid
Khaled A. S. Al-Rasheid King Saud University
Henglong Xu
Henglong Xu Ocean University of China
Zigui Chen
Zigui Chen Chinese University of Hong Kong
Nianzhi Jiao
Nianzhi Jiao Xiamen University
Thorsten Stoeck
Thorsten Stoeck Technical University of Kaiserslautern
Micah Dunthorn
Micah Dunthorn University of Oslo
Ronald W. Harvey
Ronald W. Harvey United States Geological Survey
Bangqin Huang
Bangqin Huang Xiamen University
Mark E. Hodson
Mark E. Hodson University of York

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Related Online Degrees & Career Pathways

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With a background in ecology, evolution, or the life sciences, you can pivot into many rewarding and high-growth professions using flexible, online pathways.

Best Scientists Citing Alan Warren

Weibo Song

Weibo Song

Ocean University of China

Publications: 168

Khaled A. S. Al-Rasheid

Khaled A. S. Al-Rasheid

King Saud University

Publications: 125

Henglong Xu

Henglong Xu

Ocean University of China

Publications: 95

Thorsten Stoeck

Thorsten Stoeck

Technical University of Kaiserslautern

Publications: 44

Laura A. Katz

Laura A. Katz

Smith College

Publications: 35

Wilhelm Foissner

Wilhelm Foissner

University of Salzburg

Publications: 31

Mark J. Costello

Mark J. Costello

Nord University

Publications: 27

Micah Dunthorn

Micah Dunthorn

University of Oslo

Publications: 23

Denis H. Lynn

Denis H. Lynn

University of British Columbia

Publications: 19

Jillian F. Banfield

Jillian F. Banfield

University of California, Berkeley

Publications: 17

Hartmut Arndt

Hartmut Arndt

University of Cologne

Publications: 16

Zigui Chen

Zigui Chen

Chinese University of Hong Kong

Publications: 16

John R. Dolan

John R. Dolan

Université Paris Cité

Publications: 14

Enrique Lara

Enrique Lara

Spanish National Research Council

Publications: 14

Markus Weitere

Markus Weitere

Helmholtz Centre for Environmental Research

Publications: 12

Mark E. Hodson

Mark E. Hodson

University of York

Publications: 12

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City University of Hong Kong

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