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Pekka Niemelä

Pekka Niemelä

D-Index & Metrics

Ecology and Evolution

D-Index
58
Citations
9980
World Ranking
2607
National Ranking
47

Pekka Niemelä 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 Pekka Niemelä 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: 172 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

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

Pekka Niemelä 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 Pekka Niemelä 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: 58 D-Index — 70th percentile

70% of scientists in this discipline score the same or lower.

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

Overview

Pekka Niemelä is affiliated with the University of Turku in Finland. Their expertise lies primarily within the fields of Agricultural and Biological Sciences, Environmental Science, and Earth and Planetary Sciences. The scientist's research spans several subfields, including Ecology, Evolution, Behavior and Systematics, Oceanography, Global and Planetary Change, Plant Science, and Ecological Modeling.

Their academic output includes recent papers published between 2020 and 2024. These works appear in journals such as Frontiers in Ecology and the Environment, Ecology and Evolution, Scientific Reports, Boreal Environment Research Journal Archive, and Heliyon. Notable papers include:

  • Complex responses of global insect pests to climate warming, 2020, Frontiers in Ecology and the Environment
  • Within-season changes in habitat use of forest-dwelling boreal bats, 2020, Ecology and Evolution
  • Temporomandibular joint and Giant Panda's (Ailuropoda melanoleuca) adaptation to bamboo diet, 2021, Scientific Reports
  • Effects of soil quality and air pollution on the rooting and survival of Salix borealis cuttings, 2024, Boreal Environment Research Journal Archive
  • Changes in Atlantic climatic regulation mechanisms that underlie mesozooplankton biomass loss in the northern Baltic Sea, 2024, Heliyon

The scientist frequently collaborates with peers including Pekka K. Vallittu, Juha Varrela, Jukka Salo, Hemin Zhang, and Heta Rousi. Their publications cover a range of research topics, highlighting key focuses such as Plant and Animal Studies, Species Distribution and Climate Change, Marine and Fisheries Research, Marine and Coastal Ecosystems, Oceanographic and Atmospheric Processes, Insect-Plant Interactions and Control, and Plant Responses to Elevated CO2.

Publication venues where Pekka Niemelä has contributed multiple articles include Scientific Reports, Frontiers in Ecology and the Environment, Ecology and Evolution, Heliyon, and Boreal Environment Research Journal Archive. This distribution of publication venues reflects a research profile oriented toward ecological and environmental sciences with an emphasis on both terrestrial and marine ecosystems.

Best Publications

  • River dynamics and the diversity of Amazon lowland forest

    Jukka Salo;Risto Kalliola;Ilmari Häkkinen;Yrjö Mäkinen

  • Complex responses of global insect pests to climate warming

    Philipp Lehmann;Philipp Lehmann;Philipp Lehmann;Tea Ammunét;Madeleine Barton;Andrea Battisti

  • Nutrient stress: an explanation for plant anti-herbivore responses to defoliation

    Juha Tuomi;Pekka Niemelä;Erkki Haukioja;Seija Sirén

  • Invasion of North American Forests by European Phytophagous Insects Legacy of the European crucible

    Pekka Niemelä;William J. Mattson

  • Defensive Responses of Trees in Relation to Their Carbon/Nutrient Balance

    Juha Tuomi;Pekka Niemelä;F. Stuart ChapinIII;John P. Bryant

  • Insects on trees : population and individual response to fertilization

    Maarit Kytö;Pekka Niemelä;Stig Larsson

  • Birch leaves as a resource for herbivores: Seasonal occurrence of increased resistance in foliage after mechanical damage of adjacent leaves.

    Erkki Haukioja;Pekka Niemelä

  • Climate Change and Range Shifts in Two Insect Defoliators: Gypsy Moth and Nun Moth - a Model Study

    Henri Vanhanen;Timo O Veteli;Sonja Päivinen;Seppo Kellomäki

  • Foliage phenols and nitrogen in relation to growth, insect damage, and ability to recover after defoliation, in the mountain birch Betula pubescens ssp tortuosa.

    Erkki Haukioja;Pekka Niemelä;Seija Sirén

  • The Autumnal Moth in Fennoscandia

    Erkki Haukioja;Seppo Neuvonen;Sinikka Hanhimäki;Pekka Niemelä

  • Moose Browsing on Scots Pine along a Gradient of Plant Productivity

    Kjell Danell;Pekka Niemela;Tuomo Varvikko;Timo Vuorisalo

  • Growth of reindeer lichens and effects of reindeer grazing on ground cover vegetation in a Scots pine forest and a subarctic heathland in Finnish Lapland

    Michael Den Herder;Minna‐Maarit Kytöviita;Pekka Niemelä

  • Delayed induced resistance and increase in leaf fluctuating asymmetry as responses of Salix borealis to insect herbivory.

    Elena L Zvereva;Mikhail V Kozlov;Pekka Niemelä;Erkki Haukioja

  • Induced responses in stilbenes and terpenes in fertilized Norway spruce after inoculation with blue-stain fungus, Ceratocystis polonica.

    Heli Viiri;Erkki Annila;Veikko Kitunen;Pekka Niemelä

  • The influence of ants on the survival of mountain birches during an Oporinia autumnata (Lep., Geometridae) outbreak.

    Kari J. Laine;Pekka Niemelä

  • The effect of elevated CO2 and temperature on the secondary chemistry of Betula pendula seedlings

    Kari Kuokkanen;Riitta Julkunen-Tiitto;Markku Keinänen;Pekka Niemelä

  • Abiotic factors, climatic variability and forest insect pests

    Seppo Neuvonen;Tarmo Antero Virtanen

  • Few immigrant phytophagous insects on woody plants in Europe: legacy of the European crucible?

    William Mattson;Henri Vanhanen;Timo Veteli;Sanna Sivonen

  • The Panglossian paradigm and delayed inducible accumulation of foliar phenolics in mountain birch

    Juha Tuomi;Pekka Niemelä;Seija Sirén

  • Reversed latitudinal gradient in species richness of sawflies (Hymenoptera, Symphyta)

    J. Kouki;P. Niemelä;M. Viitasaari

  • Plant availability hypothesis and other explanations of herbivore cycles: complementary or exclusive alternatives?

    Erkki Haukioja;Keijo Kapiainen;Pekka Niemela;Juha Tuomi

  • Seasonal patterns in species richness of herbivores: macrolepidopteran larvae on Finnish deciduous trees.

    Pekka Niemelä

Frequent Co-Authors

Liselotte Sundström
Liselotte Sundström University of Helsinki
Anita C. Risch
Anita C. Risch Swiss Federal Institute for Forest, Snow and Landscape Research
Martin F. Jurgensen
Martin F. Jurgensen Michigan Technological University
Leena Finér
Leena Finér Natural Resources Institute Finland
Juha Tuomi
Juha Tuomi University of Oulu
Seppo Kellomäki
Seppo Kellomäki University of Eastern Finland
Erkki Haukioja
Erkki Haukioja University of Turku
Pekka Punttila
Pekka Punttila Finnish Environment Institute
Mikhail V. Kozlov
Mikhail V. Kozlov University of Turku
Riitta Julkunen-Tiitto
Riitta Julkunen-Tiitto University of Eastern Finland

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