World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
69
Citations
14653
World Ranking
7518
National Ranking
3419

Kirk C. Klasing publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Kirk C. Klasing sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 201 publications — 50th percentile

50% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Kirk C. Klasing D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Kirk C. Klasing sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 69 D-Index — 63rd percentile

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

The last bar groups every scientist with 167 D-Index or more.

Overview

Kirk C. Klasing is affiliated with the University of California, Davis in the United States. Their research primarily focuses on topics within Agricultural and Biological Sciences, with specific attention to subfields such as Animal Science and Zoology, Parasitology, Ecology, Evolution, Behavior and Systematics, Infectious Diseases, and Ecology.

Klasing's work addresses a variety of main topics, including:

  • Animal Nutrition and Physiology
  • Bird parasitology and diseases
  • Animal Behavior and Reproduction
  • Viral Infections and Vectors
  • Animal Ecology and Behavior Studies
  • Climate Change and Health Impacts
  • Wildlife Ecology and Conservation

Recent papers authored by Klasing include:

  • Stress in paradise: effects of elevated corticosterone on immunity and avian malaria resilience in a Hawaiian passerine (2021), Journal of Experimental Biology
  • Patterns of annual and seasonal immune investment in a temporal reproductive opportunist (2020), Proceedings of the Royal Society B Biological Sciences
  • Large Mammals Have More Powerful Antibacterial Defenses Than Expected from Their Metabolic Rates (2020), bioRxiv (Cold Spring Harbor Laboratory)
  • Variation in immunity and health in response to introduced avian malaria in an endemic Hawaiian songbird (2021), Animal Conservation
  • Anti-microbial activity of whole blood and plasma collected from Anna's Hummingbirds (Calypte anna) against three different microbes (2020), PLoS ONE

Frequent coauthors collaborating with Klasing include:

  • Elizabeth M. Schultz
  • Thomas P. Hahn
  • Gabrielle Names
  • Jamie M. Cornelius
  • Kathleen E. Hunt

Publication venues where Klasing has contributed multiple works include:

  • Journal of Experimental Biology
  • Proceedings of the Royal Society B Biological Sciences
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Animal Conservation
  • PLoS ONE

In addition to journal articles, Klasing has contributed to book publications, including a title published by CABI eBooks:

  • Comparative Avian Nutrition (2022)

Best Publications

  • Comparative avian nutrition

    Kirk C. Klasing

  • A hemolysis-hemagglutination assay for characterizing constitutive innate humoral immunity in wild and domestic birds.

    Kevin D. Matson;Robert E. Ricklefs;Kirk C. Klasing

  • Immunologically mediated growth depression in chicks: influence of feed intake, corticosterone and interleukin-1.

    Klasing Kc;Laurin De;Peng Rk;Fry Dm

  • Phytohemagglutinin-induced skin swelling in birds : histological support for a classic immunoecological technique

    Lynn B. Martin;Lynn B. Martin;Peggy Han;Jason Lewittes;Joshua R. Kuhlman

  • Nutrition and the immune system

    K C Klasing

  • Nutritional Aspects of Leukocytic Cytokines

    Kirk C. Klasing

  • Quantifying and comparing constitutive immunity across avian species

    Sam Millet;Jennie Bennett;Kelly A. Lee;Michaela Hau

  • A role for immunology in invasion biology

    Kelly A. Lee;Kirk C. Klasing

  • Constitutive innate immunity is a component of the pace-of-life syndrome in tropical birds

    B Irene Tieleman;Joseph B Williams;Robert E Ricklefs;Kirk C Klasing

  • Prevention of Immunologic Stress Contributes to the Growth-Permitting Ability of Dietary Antibiotics in Chicks

    Eugeni Roura;Josep Homedes;Kirk C. Klasing

  • Capture Stress and the Bactericidal Competence of Blood and Plasma in Five Species of Tropical Birds

    Kevin D. Matson;B. Irene Tieleman;Kirk C. Klasing

  • The effect of light intensity on the behavior, eye and leg health, and immune function of broiler chickens

    R. A. Blatchford;K. C. Klasing;H. L. Shivaprasad;P. S. Wakenell

  • Relationship between the level of dietary vitamin E and the immune response of broiler chickens.

    T. V. Leshchinsky;K. C. Klasing

  • Nutrition of Birds in the Order Psittaciformes: A Review

    Elizabeth A. Koutsos;Kevin D. Matson;Kirk C. Klasing

  • Rice expressing lactoferrin and lysozyme has antibiotic-like properties when fed to chicks.

    Brooke D. Humphrey;Ning Huang;Kirk C. Klasing

  • Evolution of sweet taste perception in hummingbirds by transformation of the ancestral umami receptor

    Maude W. Baldwin;Yasuka Toda;Tomoya Nakagita;Mary J. O'Connell

  • Constitutive immune defences correlate with life-history variables in tropical birds.

    K. A. Lee;Martin Wikelski;W. D. Robinson;T. R. Robinson

  • No simple answers for ecological immunology: relationships among immune indices at the individual level break down at the species level in waterfowl

    Kevin D Matson;Alan A Cohen;Kirk C Klasing;Robert E Ricklefs

  • Maternal Carotenoid Status Modifies the Incorporation of Dietary Carotenoids into Immune Tissues of Growing Chickens (Gallus gallus domesticus)

    Elizabeth A. Koutsos;Andrew J. Clifford;C. Christopher Calvert;Kirk C. Klasing

  • Divergence of the inflammatory response in two types of chickens.

    Tatiana V. Leshchinsky;Kirk C. Klasing

Frequent Co-Authors

Martin Wikelski
Martin Wikelski Max Planck Institute for Ornithology
Thomas P. Hahn
Thomas P. Hahn University of California, Davis
Robert E. Ricklefs
Robert E. Ricklefs University of Missouri–St. Louis
B. Irene Tieleman
B. Irene Tieleman University of Groningen
Lynn B. Martin
Lynn B. Martin University of South Florida
Joseph B. Williams
Joseph B. Williams The Ohio State University
Kevin D. Matson
Kevin D. Matson Wageningen University & Research
W. Douglas Robinson
W. Douglas Robinson Oregon State University
Jose Perez
Jose Perez Autonomous University of Barcelona
R.L. Baldwin
R.L. Baldwin University of California, Davis

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