World's Best Scientists 2026 revealed!
Toomas Tammaru

Toomas Tammaru

D-Index & Metrics

Ecology and Evolution

D-Index
41
Citations
8548
World Ranking
5738
National Ranking
15

Toomas Tammaru 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 Toomas Tammaru 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: 132 publications — 41st percentile

41% of scientists in this discipline score the same or lower.

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

Toomas Tammaru 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 Toomas Tammaru 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: 41 D-Index — 32nd percentile

32% of scientists in this discipline score the same or lower.

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

Overview

Toomas Tammaru is affiliated with the University of Tartu in Estonia and has conducted extensive research primarily within the fields of Agricultural and Biological Sciences, Environmental Science, and Biochemistry, Genetics and Molecular Biology.

Their work encompasses various subfields, including Ecology, Evolution, Behavior and Systematics; Genetics; Insect Science; Nature and Landscape Conservation; and Ecological Modeling. The main research topics covered include Plant and animal studies, Ecology and Vegetation Dynamics Studies, Lepidoptera: Biology and Taxonomy, Species Distribution and Climate Change, Animal Behavior and Reproduction, Entomopathogenic Microorganisms in Pest Control, and Insect symbiosis and bacterial influences.

Toomas Tammaru's recent publications include:

  • Why do males emerge before females? Sexual size dimorphism drives sexual bimaturism in insects, 2021, Biological reviews/Biological reviews of the Cambridge Philosophical Society
  • Comparative analysis of larval growth in Lepidoptera reveals instar-level constraints, 2020, Functional Ecology
  • Molecular phylogeny, classification, biogeography and diversification patterns of a diverse group of moths (Geometridae: Boarmiini), 2021, Molecular Phylogenetics and Evolution
  • Degenerated, Undifferentiated, Rearranged, Lost: High Variability of Sex Chromosomes in Geometridae (Lepidoptera) Identified by Sex Chromatin, 2021, Cells
  • Conserving woodland butterflies in managed forests: Both local and landscape factors matter, 2020, Forest Ecology and Management

The frequent co-authors collaborating with Toomas Tammaru include:

  • Erki Õunap
  • Tiit Teder
  • Ants Kaasik
  • Robert Β. Davis
  • Stênio Ítalo Araújo Foerster

Frequent publication venues for the scientist's work feature:

  • Ecology and Evolution
  • European Journal of Entomology
  • Functional Ecology
  • Journal of Evolutionary Biology
  • Biological reviews/Biological reviews of the Cambridge Philosophical Society

Best Publications

  • Poleward shifts in geographical ranges of butterfly species associated with regional warming

    Camille Parmesan;Nils Ryrholm;Constantí Stefanescu;Jane K. Hill

  • Sexual size dimorphism within species increases with body size in insects

    Tiit Teder;Toomas Tammaru

  • Intraspecific Variability in Number of Larval Instars in Insects

    Toomas Esperk;Toomas Tammaru;Sören Nylin

  • Causes of cyclicity of Epirrita autumnata (Lepidoptera, Geometridae): grandiose theory and tedious practice

    Kai Ruohomäki;Miia Tanhuanpää;Matthew P. Ayres;Pekka Kaitaniemi

  • Capital breeders and income breeders among Lepidoptera - consequences to population dynamics.

    Toomas Tammaru;Erkki Haukioja

  • Realized fecundity in Epirrita autumnata (Lepidoptera: Geometridae): relation to body size and consequences to population dynamics

    Toomas Tammaru;Pekka Kaitaniemi;Kai Ruohomäki

  • No evidence for costs of being large in females of Orgyia spp. (Lepidoptera, Lymantriidae): larger is always better.

    Toomas Tammaru;Toomas Esperk;Ignacio Castellanos

  • Achieving high sexual size dimorphism in insects: females add instars

    Toomas Esperk;Toomas Tammaru;Sören Nylin;Tiit Teder

  • Determination of adult size in a folivorous moth: constraints at instar level?

    Toomas Tammaru

  • Size-dependent predation risk in tree-feeding insects with different colouration strategies: a field experiment.

    Triinu Remmel;Toomas Tammaru

  • Quantifying predation on folivorous insect larvae: the perspective of life‐history evolution

    Triinu Remmel;John Davison;Toomas Tammaru

  • Size dependent predation risk in cryptic and conspicuous insects

    Triinu Mänd;Toomas Tammaru;Johanna Mappes

  • Oviposition Choices of Epirrita autumnata (Lepidoptera: Geometridae) in Relation to Its Eruptive Population Dynamics

    Toomas Tammaru;Pekka Kaitaniemi;Kai Ruohomäki

  • Growth allometry of immature insects: larvae do not grow exponentially

    Toomas Tammaru;Toomas Esperk

  • Reproductive decisions are sensitive to cues of life expectancy: the case of a moth

    Juhan Javoiš;Toomas Tammaru

  • Cascading effects of variation in plant vigour on the relative performance of insect herbivores and their parasitoids

    Tiit Teder;Toomas Tammaru

  • The evolution of female flightlessness among Ennominae of the Holarctic forest zone (Lepidoptera, Geometridae).

    Niklas Wahlberg;Niina Snäll;Jaan Viidalepp;Kai Ruohomäki

  • Allozyme variability in central, peripheral and isolated populations of the scarce heath (Coenonympha hero: Lepidoptera, Nymphalidae): Implications for conservation

    Anna Cassel;Toomas Tammaru

  • Old mountain birches at high altitudes are prone to outbreaks of Epirrita autumnata (Lepidoptera: Geometridae)

    Kai Ruohomäki;Tarmo Virtanen;Pekka Kaitaniemi;Toomas Tammaru

  • Allee effects can both conserve and create spatial heterogeneity in population densities.

    M. Gyllenberg;J. Hemminki;T. Tammaru

Frequent Co-Authors

Kai Ruohomäki
Kai Ruohomäki University of Turku
Niklas Wahlberg
Niklas Wahlberg Lund University
Erkki Haukioja
Erkki Haukioja University of Turku
Karl Gotthard
Karl Gotthard Stockholm University
Sören Nylin
Sören Nylin Stockholm University
Constantí Stefanescu
Constantí Stefanescu Autonomous University of Barcelona
Johanna Mappes
Johanna Mappes University of Helsinki
Martin Konvicka
Martin Konvicka Czech Academy of Sciences
Heikki Roininen
Heikki Roininen University of Eastern Finland
Kari Saikkonen
Kari Saikkonen University of Turku

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring Ecology and Evolution can open doors to diverse and meaningful careers. Many students with an interest in biology, the environment, or research often consider adjacent fields and interdisciplinary studies when searching for educational and professional opportunities.

For those passionate about the intersection of behavior, health, and science, best online clinical psychology programs might be appealing. These programs connect biological principles with mental health and human behavior. Alternatively, those interested in serving communities may find value in online schools for human services, which focus on both practical and administrative roles in social and support services.

Some Ecology graduates consider paths like speech pathology, where understanding biological systems and communication is essential. Learn about the education required to be a speech pathologist if you are interested in healthcare and rehabilitation fields.

Creative thinkers might also be drawn to architecture, where ecological and evolutionary concepts inform sustainable design. If this sounds interesting, see what’s needed with an architect online degree and how it relates to environmental planning and green construction.

Best Scientists Citing Toomas Tammaru

Trending Scientists