World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
33
Citations
2939
World Ranking
7971
National Ranking
135

Geir Rudolfsen 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 Geir Rudolfsen 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: 79 publications — 6th percentile

6% of scientists in this discipline score the same or lower.

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

Geir Rudolfsen 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 Geir Rudolfsen 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: 33 D-Index — 8th percentile

8% of scientists in this discipline score the same or lower.

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

Overview

Geir Rudolfsen is affiliated with the University of Tromsø - The Arctic University of Norway. Their research primarily focuses on environmental science and agricultural and biological sciences, often intersecting with subfields such as ecology, evolution, behavior, systematics, ecological modeling, nature and landscape conservation, and global and planetary change.

Their work covers a range of topics within avian ecology and behavior, animal behavior and reproduction, and plant and animal studies. Additional topics include wildlife ecology and conservation, species distribution and climate change, ecology and vegetation dynamics studies, as well as radioactive contamination and transfer.

Geir Rudolfsen has contributed to multiple peer-reviewed publications in several scientific journals. Recent papers include:

  • When Older Males Sire More Offspring-Increased Attractiveness or Higher Fertility? (2022), Behavioral Ecology and Sociobiology
  • Sperm velocity in a promiscuous bird across experimental media of different viscosities (2020), Proceedings of the Royal Society B Biological Sciences
  • Resident bird species track inter-annual variation in spring phenology better than long-distance migrants in a subalpine habitat (2022), Climate Change Ecology
  • Extra-pair paternity in the boreal, socially monogamous Grey-headed Chickadee (Poecile cinctus) (2020), Ornis Fennica
  • Extra-pair paternity and sperm length variation in a far northern Great Tit (Parus major) population (2024), Journal für Ornithologie

Frequent co-authors in Rudolfsen's publications include Oddmund Kleven, Tim Schmoll, Jan T. Lifjeld, Frode Fossøy, and Frode F. Jacobsen. The repeated collaboration with these researchers reflects thematic consistency in studies related to avian reproductive biology and behavioral ecology.

Rudolfsen's research has been published consistently in a selection of journals with Behavioral Ecology and Sociobiology being a notable venue with multiple publications. Other journals include the Proceedings of the Royal Society B Biological Sciences, Climate Change Ecology, Ornis Fennica, and Journal für Ornithologie.

Best Publications

  • Rapid adjustments of sperm characteristics in relation to social status

    Geir Rudolfsen;Lars Figenschou;Ivar Folstad;Helge Tveiten

  • COMPARATIVE EVIDENCE FOR THE EVOLUTION OF SPERM SWIMMING SPEED BY SPERM COMPETITION AND FEMALE SPERM STORAGE DURATION IN PASSERINE BIRDS

    Oddmund Kleven;Frode Fossøy;Frode Fossøy;Terje Laskemoen;Raleigh J. Robertson

  • Rejection of artificial cuckoo (Cuculus canorus) eggs in relation to variation in egg appearance among reed warblers (Acrocephalus scirpaceus)

    Bård G. Stokke;Arne Moksnes;Eivin Røskaft;Geir Rudolfsen

  • Effects of ovarian fluid on sperm velocity in Arctic charr (Salvelinus alpinus)

    Davnah Urbach;Davnah Urbach;Ivar Folstad;Geir Rudolfsen

  • Predictors of resistance to brood parasitism within and among reed warbler populations

    Bård G. Stokke;Inge Hafstad;Geir Rudolfsen;Arne Moksnes

  • Chernobyl Birds Have Smaller Brains

    Anders Pape Møller;Andea Bonisoli-Alquati;Geir Rudolfsen;Timothy A. Mousseau

  • Quantitative characteristics of Atlantic halibut, Hippoglossus hippoglossus L., semen throughout the reproductive season.

    Igor Babiak;Oddvar Ottesen;Geir Rudolfsen;Steinar Johnsen

  • The genetic consequences of hatchery-induced sperm competition in a salmonid

    Claus Wedekind;Claus Wedekind;Geir Rudolfsen;Alain Jacob;Davnah Urbach

  • Sperm velocity influence paternity in the Atlantic cod (Gadus morhua L.)

    Geir Rudolfsen;Lars Figenschou;Ivar Folstad;Oddmund Kleven

  • Factors predicting male fertilization success in an external fertilizer

    Ståle Liljedal;Geir Rudolfsen;Ivar Folstad

  • Sperm quantity and quality effects on fertilization success in a highly promiscuous passerine, the tree swallow Tachycineta bicolor

    Terje Laskemoen;Oddmund Kleven;Oddmund Kleven;Frode Fossøy;Frode Fossøy;Raleigh J. Robertson

  • Potential fitness benefits from mate selection in the Atlantic cod (Gadus morhua)

    G. Rudolfsen;L. Figenschou;I. Folstad;J. T. Nordeide

  • Rejection of Conspecific Eggs in Chaffinches: The Effect of Age and Clutch Characteristics

    Bård G. Stokke;Bård G. Stokke;Geir Rudolfsen;Arne Moksnes;Eivin Røskaft

  • Senescent sperm performance in old male birds.

    A. P. Møller;T. A. Mousseau;G. Rudolfsen;J. BALBONTíN

  • Host density predicts presence of cuckoo parasitism in reed warblers

    Bård G. Stokke;Inge Hafstad;Geir Rudolfsen;Bruno Bargain

  • Sperm-related phenotypes implicated in both maintenance and breakdown of a natural species barrier in the house mouse.

    Jana Albrechtová;Tomáš Albrecht;Tomáš Albrecht;Stuart J. E. Baird;Miloš Macholán

  • Costs associated with recognition and rejection of parasitic eggs in two European passerines

    Bård G. Stokke;Marcel Honza;Arne Moksnes;Eivin Røskaft

  • Breeding success of common cuckoos Cuculus canorus parasitising four sympatric species of Acrocephalus warblers

    Oddmund Kleven;Arne Moksnes;Eivin Røskaft;Geir Rudolfsen

  • Impaired swimming behaviour and morphology of sperm from barn swallows Hirundo rustica in Chernobyl.

    A.P. Møller;T.A. Mousseau;C. Lynnn;S. Ostermiller

  • Variation in sperm morphometry and sperm competition among barn swallow ( Hirundo rustica ) populations

    Terje Laskemoen;Tomas Albrecht;Tomas Albrecht;Andrea Bonisoli-Alquati;Jaroslav Cepak

  • Sperm characteristics and competitive ability in farmed and wild cod

    Jon Egil Skjæraasen;Ian Mayer;Justin J. Meager;Geir Rudolfsen

  • Milt characteristics of diploid and triploid Atlantic cod (Gadus morhua L.)

    Stefano Peruzzi;Geir Rudolfsen;Raul Primicerio;Marianne Frantzen

Frequent Co-Authors

Ivar Folstad
Ivar Folstad University of Tromsø - The Arctic University of Norway
Oddmund Kleven
Oddmund Kleven Norwegian Institute for Nature Research
Anders Pape Møller
Anders Pape Møller University of Paris-Saclay
Bård G. Stokke
Bård G. Stokke Norwegian Institute for Nature Research
Timothy A. Mousseau
Timothy A. Mousseau University of South Carolina
Eivin Røskaft
Eivin Røskaft Norwegian University of Science and Technology
Arne Moksnes
Arne Moksnes Norwegian University of Science and Technology
Jan T. Lifjeld
Jan T. Lifjeld University of Oslo
Marcel Honza
Marcel Honza Czech Academy of Sciences
Raine Kortet
Raine Kortet University of Eastern Finland

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