World's Best Scientists 2026 revealed!
Hajime Kayanne

Hajime Kayanne

D-Index & Metrics

Ecology and Evolution

D-Index
43
Citations
6088
World Ranking
5377
National Ranking
26

Hajime Kayanne 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 Hajime Kayanne 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: 153 publications — 54th percentile

54% of scientists in this discipline score the same or lower.

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

Hajime Kayanne 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 Hajime Kayanne 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: 43 D-Index — 38th percentile

38% of scientists in this discipline score the same or lower.

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

Overview

Hajime Kayanne is a researcher affiliated with the University of Tokyo in Japan, specializing in environmental science with a focus on oceanography and ecology. Their work primarily addresses topics related to coral and marine ecosystem studies, ocean acidification effects and responses, and marine and fisheries research. The researcher has contributed extensively to the understanding of marine environments, particularly within the context of environmental changes and their impacts on marine biodiversity.

The main fields of study in which Kayanne has published include Environmental Science and Earth and Planetary Sciences. More specialized subfields of their research encompass Oceanography, Ecology, Global and Planetary Change, Bioengineering, and Earth-Surface Processes.

Among the research topics Kayanne has explored are:

  • Coral and Marine Ecosystems Studies
  • Ocean Acidification Effects and Responses
  • Marine and fisheries research
  • Marine and coastal plant biology
  • Marine Bivalve and Aquaculture Studies
  • Analytical Chemistry and Sensors
  • Coastal and Marine Management

Kayanne's recent papers demonstrate a focus on marine ecosystem monitoring and conservation challenges in Japan and surrounding regions. Notable publications include:

  • Designing a blueprint for coral reef survival, 2021, Biological Conservation
  • Trajectory to local extinction of an isolated dugong population near Okinawa Island, Japan, 2022, Scientific Reports
  • Unexpected high abundance of aragonite-forming Nanipora (Octocorallia: Helioporacea) at an acidified volcanic reef in southern Japan, 2021, Marine Biodiversity
  • Anthropogenic Anoxic History of the Tuvalu Atoll Recorded as Annual Black Bands in Coral, 2020, Scientific Reports
  • Development of an automated transportable continuous system to measure the total alkalinity of seawater, 2020, Talanta

Kayanne frequently collaborates with other researchers in the marine sciences. Frequent co-authors include Shoji Yamamoto, Hiroya Yamano, Haruko Kurihara, Akihide Hemmi, and Takeshi Hara. These collaborations reflect a network of contributors active in marine ecology and environmental monitoring.

The main publication venues for Kayanne's work feature journals such as Scientific Reports, Galaxea Journal of Coral Reef Studies, Frontiers in Marine Science, Biological Conservation, and Marine Biodiversity. These platforms indicate a focus on both broad scientific communication and specialized coral reef and marine biodiversity research.

Best Publications

  • Spatial community shift from hard to soft corals in acidified water

    Shihori Inoue;Hajime Kayanne;Shoji Yamamoto;Haruko Kurihara

  • Larval survivorship, competency periods and settlement of two brooding corals, Heliopora coerulea and Pocillopora damicornis

    S. Harii;H. Kayanne;H. Takigawa;T. Hayashibara

  • Diurnal Changes in the Partial Pressure of Carbon Dioxide in Coral Reef Water

    Hajime Kayanne;Atsushi Suzuki;Hiroshi Saito

  • Atoll island vulnerability to flooding and inundation revealed by historical reconstruction: Fongafale Islet, Funafuti Atoll, Tuvalu

    Hiroya Yamano;Hiroya Yamano;Hajime Kayanne;Toru Yamaguchi;Yuji Kuwahara

  • Rapid direct determination of organic carbon and nitrogen in carbonate‐bearing sediments with a Yanaco MT‐5 CHN analyzer

    Masumi Yamamuro;Hajime Kayanne

  • Fine-scale mapping of land-derived nitrogen in coral reefs by δ15N in macroalgae

    Yu Umezawa;Toshihiro Miyajima;Masumi Yamamuro;Hajime Kayanne

  • Validation of degree heating weeks as a coral bleaching index in the northwestern Pacific

    Hajime Kayanne

  • Carbon and nitrogen stable isotopes of primary producers in coral reef ecosystems

    Masumi Yamamuro;Hajime Kayanne;Masao Minagawao

  • Designing a blueprint for coral reef survival

    Joan Kleypas;Denis Allemand;Ken Anthony;Andrew C. Baker

  • Recovery of coral populations after the 1998 bleaching on Shiraho Reef, in the southern Ryukyus, NW Pacific

    Hajime Kayanne;Saki Harii;Yoichi Ide;Fujio Akimoto

  • Evaluation of various satellite sensors for waterline extraction in a coral reef environment: Majuro Atoll, Marshall Islands

    Hiroya Yamano;Hiroya Yamano;Hiroto Shimazaki;Tsuneo Matsunaga;Albon Ishoda

  • Net uptake of atmospheric CO2 by coastal submerged aquatic vegetation.

    Tatsuki Tokoro;Shinya Hosokawa;Eiichi Miyoshi;Kazufumi Tada

  • Heavy metal contamination of coastal lagoon sediments: Fongafale Islet, Funafuti Atoll, Tuvalu.

    Masafumi Fujita;Masafumi Fujita;Yoichi Ide;Daisaku Sato;Paul S. Kench

  • Taking the Metabolic Pulse of the World's Coral Reefs

    Tyler Cyronak;Andreas J. Andersson;Chris Langdon;Rebecca Albright

  • Significance of groundwater nitrogen discharge into coral reefs at Ishigaki Island, southwest of Japan

    Y. Umezawa;T. Miyajima;H. Kayanne;I. Koike

  • Salinity records for the 1997–98 El Niño from Western Pacific corals

    Maki Morimoto;Maki Morimoto;Osamu Abe;Hajime Kayanne;Naoyuki Kurita

  • The mechanism of production enhancement in coral reef carbonate systems: model and empirical results

    Unknown

  • Seasonal and bleaching-induced changes in coral reef metabolism and CO2 flux

    Hajime Kayanne;Hiroshi Hata;Setsuko Kudo;Hiroya Yamano

  • Holocene sea-level changes and barrier reef formation on an oceanic island, Palau Islands, western Pacific

    Hajime Kayanne;Hiroya Yamano;Richard H. Randall

  • Corals mass-cultured from eggs and transplanted as juveniles to their native, remote coral reef

    Unknown

  • Larval dispersal, recruitment, and adult distribution of the brooding stony octocoral Heliopora coerulea on Ishigaki Island, southwest Japan

    S. Harii;S. Harii;H. Kayanne

  • of seagrass leaves for monitoring anthropogenic nutrient increases in coral reef ecosystems

    M. Yamamuro;H. Kayanne;H. Yamano

Frequent Co-Authors

Hiroya Yamano
Hiroya Yamano National Institute for Environmental Studies
Isao Koike
Isao Koike University of Tokyo
Tim R. McClanahan
Tim R. McClanahan Wildlife Conservation Society
Toshio Yamagata
Toshio Yamagata Japan Agency for Marine-Earth Science and Technology
Swadhin K. Behera
Swadhin K. Behera Japan Agency for Marine-Earth Science and Technology
Atsushi Suzuki
Atsushi Suzuki National Institute of Advanced Industrial Science and Technology
Kazuhisa Goto
Kazuhisa Goto University of Tokyo
Teruaki Ishii
Teruaki Ishii Shizuoka University
Kenji Satake
Kenji Satake University of Tokyo
Andrew G. Dickson
Andrew G. Dickson University of California, San Diego

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