World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
47
Citations
6810
World Ranking
4502
National Ranking
114

Jan Ekman 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 Jan Ekman sits on this spectrum.

37–46 publications: 11 scientists 47–56 publications: 41 scientists 57–66 publications: 147 scientists 67–76 publications: 219 scientists 77–86 publications: 409 scientists 87–96 publications: 467 scientists 97–106 publications: 613 scientists 107–116 publications: 585 scientists 117–126 publications: 591 scientists 127–136 publications: 567 scientists 137–146 publications: 535 scientists 147–156 publications: 481 scientists 157–166 publications: 404 scientists 167–176 publications: 338 scientists 177–186 publications: 362 scientists 187–196 publications: 309 scientists 197–206 publications: 246 scientists 207–216 publications: 223 scientists 217–226 publications: 205 scientists 227–236 publications: 167 scientists 237–246 publications: 141 scientists 247–256 publications: 150 scientists 257–266 publications: 125 scientists 267–276 publications: 113 scientists 277–286 publications: 92 scientists 287–296 publications: 81 scientists 297–306 publications: 77 scientists 307–316 publications: 64 scientists 317–326 publications: 47 scientists 327–336 publications: 58 scientists 337–346 publications: 52 scientists 347–356 publications: 48 scientists 357–366 publications: 50 scientists 367–376 publications: 30 scientists 377–386 publications: 30 scientists 387–396 publications: 34 scientists 397–406 publications: 25 scientists 407–416 publications: 17 scientists 417–426 publications: 12 scientists 427–436 publications: 20 scientists 437–446 publications: 9 scientists 447–456 publications: 12 scientists 457–466 publications: 11 scientists 467–476 publications: 13 scientists 477–486 publications: 10 scientists 487–496 publications: 7 scientists 497–506 publications: 12 scientists 507–516 publications: 10 scientists 517–526 publications: 9 scientists 527–532 publications: 6 scientists 533+ publications: 100 scientists
37 publications 533+

This scientist: 79 publications — 6th percentile

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

The last bar groups every scientist with 533 publications or more.

Jan Ekman 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 Jan Ekman 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: 152 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: 120 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: 28 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: 8 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: 3 scientists 122+ D-Index: 99 scientists
30 D-Index 122+

This scientist: 47 D-Index — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 122 D-Index or more.

Overview

Jan Ekman is affiliated with Uppsala University in Sweden and works primarily within the fields of Engineering, Materials Science, and Chemical Engineering. Their research covers a variety of subfields, including Materials Chemistry, Fluid Flow and Transfer Processes, Automotive Engineering, Safety, Risk, Reliability and Quality, and Medical Laboratory Technology.

The scientist's work focuses on topics such as Catalytic Processes in Materials Science, Advanced Combustion Engine Technologies, Vehicle Emissions and Performance, Reliability and Maintenance Optimization, Quality and Safety in Healthcare, and Quality and Supply Management.

Jan Ekman has published in the SAE technical papers on CD-ROM/SAE technical paper series, which is also among the frequent venues for their scholarly contributions.

  • Different Methods to Improve the Exhaust Gas Temperature in Modern Stage V Off-Road Diesel Engine over Transient Emission Cycles, 2020, SAE technical papers on CD-ROM/SAE technical paper series

Their research collaborations involve multiple coauthors, including:

  • Mika Laurén
  • Toomas Karhu
  • Seppo Niemi
  • Miika Laivola
  • Kirsi Spoof-Tuomi

Jan Ekman's publication record shows engagement with topics that combine both fundamental and applied aspects of engineering and materials science. Areas such as catalytic processes and combustion engine technologies reflect interdisciplinary approaches that intersect with reliability and quality management in both technical and healthcare contexts.

Best Publications

  • Predation risk induces changes in nest-site selection and clutch size in the Siberian jay

    Sönke Eggers;Michael Griesser;Magdalena Nystrand;Jan Ekman

  • Winter mortality and food supply in tits Parus spp.

    Christer Jansson;Jan Ekman;Anders von Brdmssen

  • Social rank and habitat use in willow tit groups

    Jan B. Ekman;Conny E.H. Askenmo

  • Delayed dispersal as a route to breeding: Territorial inheritance, safe havens, and ecological constraints

    Hanna Kokko;Jan Ekman

  • Exposure and time use in willow tit flocks: the cost of subordination

    Unknown

  • Using priority to food access : fattening strategies in dominance-structured willow tit (Parus montanus) flocks

    Unknown

  • SPACING AND SURVIVAL IN WINTER GROUPS OF WILLOW TIT PARUS MONTANUS AND CRESTED TIT P. CRISTATUS-A REMOVAL STUDY

    Jan Ekman;Goran Cederholm;Conny Askenmo

  • Monitoring starvation risk: adjustments of body reserves in greenfinches (Carduelis Chloris L.) during periods of unpredictable foraging success

    Unknown

  • Coherence, Composition and Territories of Winter Social Groups of the Willow Tit Parus montanus and the Crested Tit P. cristatus

    Unknown

  • Predator-induced plasticity in nest visitation rates in the Siberian jay (Perisoreus infaustus)

    Sönke Eggers;Michael Griesser;Jan Ekman

  • Increased lifetime reproductive success for Siberian jay (Perisoreus infaustus) males with delayed dispersal

    Jan Ekman;Anders Bylin;HÔkan TegelstrÎm

  • Offspring retention in the Siberian jay {Perisoreus infaustus): the prolonged brood care hypothesis

    Unknown

  • Density-dependent seasonal mortality and population fluctuations of the temperature-zone willow tit (Parus montanus)

    Jan Ekman

  • Ecology and Evolution of Cooperative Breeding in Birds: Delayed dispersal

    Jan Ekman;Janis L. Dickinson;Ben J. Hatchwell;Michael Griesser

  • Nepotistic mobbing behaviour in the Siberian jay, Perisoreus infaustus

    Michael Griesser;Jan Ekman

  • Impact of some wintering birds on spider abundance in spruce

    C. Askenmo;A. von Brömssen;J. Ekman;C. Jansson

  • Kin Selection in Cooperative Alliances of Carrion Crows

    Vittorio Baglione;Daniela Canestrari;José M. Marcos;Jan Ekman

  • Parental nepotism enhances survival of retained offspring in the Siberian jay

    Jan Ekman;Anders Bylin;Håkan Tegelström

  • Reduced mortality selects for family cohesion in a social species

    Michael Griesser;Magdalena Nystrand;Jan Ekman

  • Inter-generic relationships of the crows, jays, magpies and allied groups (Aves: Corvidae) based on nucleotide sequence data

    Per G. P. Ericson;Anna-Lee Jansén;Ulf S. Johansson;Jan Ekman

  • DOMINANT AND SUBORDINATE FATTENING STRATEGIES - A DYNAMIC GAME

    Colin W. Clark;Jan Ekman

  • Predator-induced reductions in nest visitation rates are modified by forest cover and food availability

    Sönke Eggers;Sönke Eggers;Michael Griesser;Michael Griesser;Jan Ekman

  • Fighting to stay: the role of sibling rivalry for delayed dispersal

    Jan Ekman;Sönke Eggers;Michael Griesser

  • Queuing for preferred territories: delayed dispersal of Siberian jays

    Jan Ekman;SÖnke Eggers;Michael Griesser;HÅkan Tegelström

  • Nepotistic alarm calling in the Siberian jay, Perisoreus infaustus

    Michael Griesser;Jan Ekman

Frequent Co-Authors

Michael Griesser
Michael Griesser University of Konstanz
Sönke Eggers
Sönke Eggers Swedish University of Agricultural Sciences
Daniela Canestrari
Daniela Canestrari University of Leon
Per G. P. Ericson
Per G. P. Ericson Swedish Museum of Natural History
Alasdair I. Houston
Alasdair I. Houston University of Bristol
Rauri C. K. Bowie
Rauri C. K. Bowie University of California, Berkeley
Anssi Laurila
Anssi Laurila Uppsala University
Trevor D. Price
Trevor D. Price University of Chicago
John M. McNamara
John M. McNamara University of Bristol

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