World's Best Scientists 2026 revealed!
Pekka Niemelä

Pekka Niemelä

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Ecology and Evolution 58 2607 2497 47 42 172 9980

Pekka Niemelä publications per year

The chart shows the history of publications by Pekka Niemelä between 1979 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Pekka Niemelä published across 47 years, from 1979 to 2025, averaging 4.1 papers a year. Output peaked at 15 publications in 2007. 3 of the 193 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1979 to 2025. Vertical axis: number of publications, 0 to 15. Peak 15 publications in 2007. 1979: 1 publication 1980: 1 publication 1981: 2 publications 1982: 3 publications 1983: 3 publications 1984: 2 publications 1985: 1 publication 1986: 2 publications 1987: 2 publications 1988: 6 publications 1989: 4 publications 1990: 1 publication 1991: 2 publications 1992: 3 publications 1993: 2 publications 1994: 5 publications 1995: 2 publications 1996: 5 publications 1997: 4 publications 1998: 6 publications 1999: 5 publications 2000: 3 publications 2001: 6 publications 2002: 2 publications 2003: 6 publications 2004: 5 publications 2005: 7 publications 2006: 7 publications 2007: 15 publications 2008: 10 publications 2009: 9 publications 2010: 6 publications 2011: 4 publications 2012: 8 publications 2013: 4 publications 2014: 3 publications 2015: 12 publications 2016: 6 publications 2017: 3 publications 2018: 4 publications 2019: 3 publications 2020: 2 publications 2021: 2 publications 2022: 0 publications 2023: 1 publication 2024: 2 publications 2025: 1 publication
1979 2025

193 publications in total across all disciplines

View publications per year as a table
Pekka Niemelä: publications per year, 1979 to 2025
Year Publications
1979 1
1980 1
1981 2
1982 3
1983 3
1984 2
1985 1
1986 2
1987 2
1988 6
1989 4
1990 1
1991 2
1992 3
1993 2
1994 5
1995 2
1996 5
1997 4
1998 6
1999 5
2000 3
2001 6
2002 2
2003 6
2004 5
2005 7
2006 7
2007 15
2008 10
2009 9
2010 6
2011 4
2012 8
2013 4
2014 3
2015 12
2016 6
2017 3
2018 4
2019 3
2020 2
2021 2
2022 0
2023 1
2024 2
2025 1
Total 193
Download as CSV

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.

No. of scientists
100 200 300
Bar chart with 100 bars. Horizontal axis: publications, 37–41 to 531+. Vertical axis: number of scientists, 0 to 333. Most scientists, 333, have 97–101 publications. The last bar groups every scientist with 531 publications or more. The highlighted bar, 172–176 publications, is where this scientist sits. 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
37–41 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.

View publications distribution as a table
Number of Ecology and Evolution scientists by publication count, Research.com 2026 ranking edition. Based on 8,381 ranked scientists.
Publications Scientists This scientist
37–41 2
42–46 9
47–51 10
52–56 31
57–61 56
62–66 91
67–71 92
72–76 127
77–81 173
82–86 236
87–91 227
92–96 240
97–101 333
102–106 280
107–111 300
112–116 285
117–121 305
122–126 287
127–131 278
132–136 289
137–141 273
142–146 262
147–151 246
152–156 235
157–161 205
162–166 199
167–171 174
172–176 164 172
177–181 173
182–186 189
187–191 170
192–196 139
197–201 128
202–206 117
207–211 115
212–216 107
217–221 124
222–226 81
227–231 82
232–236 85
237–241 75
242–246 66
247–251 81
252–256 69
257–261 70
262–266 55
267–271 64
272–276 49
277–281 48
282–286 44
287–291 45
292–296 36
297–301 39
302–306 38
307–311 30
312–316 34
317–321 25
322–326 22
327–331 28
332–336 30
337–341 22
342–346 30
347–351 26
352–356 22
357–361 29
362–366 21
367–371 12
372–376 18
377–381 17
382–386 13
387–391 21
392–396 13
397–401 10
402–406 15
407–411 8
412–416 9
417–421 8
422–426 4
427–431 10
432–436 10
437–441 5
442–446 4
447–451 10
452–456 2
457–461 4
462–466 7
467–471 7
472–476 6
477–481 6
482–486 3
487–491 3
492–496 4
497–501 4
502–506 8
507–511 5
512–516 4
517–521 5
522–526 4
527–530 5
531+ 100
Download as CSV

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.

No. of scientists
50 100 150 200 250
Bar chart with 92 bars. Horizontal axis: D-Index, 30 to 121+. Vertical axis: number of scientists, 0 to 280. Most scientists, 280, have 40 D-Index. The last bar groups every scientist with 121 D-Index or more. The highlighted bar, 58 D-Index, is where this scientist sits. 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.

View D-Index distribution as a table
Number of Ecology and Evolution scientists by D-index, Research.com 2026 ranking edition. Based on 8,381 ranked scientists.
D-Index Scientists This scientist
30 95
31 123
32 191
33 245
34 252
35 244
36 249
37 244
38 254
39 254
40 280
41 274
42 266
43 233
44 248
45 208
46 201
47 213
48 207
49 172
50 209
51 199
52 153
53 169
54 163
55 148
56 120
57 146
58 137 58
59 140
60 104
61 119
62 118
63 99
64 77
65 100
66 86
67 83
68 75
69 94
70 57
71 68
72 59
73 63
74 66
75 60
76 42
77 49
78 39
79 37
80 43
81 41
82 45
83 34
84 40
85 35
86 55
87 24
88 24
89 30
90 23
91 25
92 27
93 27
94 13
95 23
96 12
97 14
98 19
99 16
100 14
101 5
102 21
103 16
104 10
105 7
106 7
107 7
108 6
109 9
110 11
111 12
112 9
113 7
114 3
115 8
116 5
117 11
118 4
119 2
120 5
121+ 100
Download as CSV

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

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

For students interested in Ecology and Evolution but considering broader career options in science and healthcare, online programs offer flexibility and quick pathways to professional roles. Options like online accelerated bsn programs for non nurses provide a route for non-science majors to transition into nursing within a short time frame. These programs are cost-effective and often feature condensed curriculums for quick completion.

Those looking for advanced clinical roles might explore direct paths to become a nurse practitioner. If speed is key, fast track nurse practitioner programs can meaningfully reduce the time to licensure.

Interested in further specialization? Psychiatric nurse practitioners are in high demand, and their salaries can vary greatly by location. Refer to recent data on dnp psychiatric nurse practitioner salary to see what to expect in each state.

Finally, for current nurses wanting to advance quickly, accelerated bsn programs make possible the jump to higher qualifications in as little as six months. These career pathways complement scientific study, opening doors in both research and patient-centered care.

Best Scientists Citing Pekka Niemelä

Trending Scientists

Recently Published Articles