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Randy A. Dahlgren

D-Index & Metrics

Biology and Biochemistry

D-Index
92
Citations
25781
World Ranking
2247
National Ranking
1207

Randy A. Dahlgren 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 Randy A. Dahlgren 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: 360 publications — 86th percentile

86% of scientists in this discipline score the same or lower.

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

Randy A. Dahlgren 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 Randy A. Dahlgren 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: 92 D-Index — 89th percentile

89% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2006 - Fellow of the Soil Science Society of America (SSSA)

Overview

Randy A. Dahlgren is affiliated with the University of California, Davis in the United States. Their research primarily falls within the field of Environmental Science, with a focus on several key subfields including Ecology, Environmental Chemistry, Pollution, Oceanography, and Soil Science.

The scientist's work covers important topics such as Microbial Community Ecology and Physiology, Soil Carbon and Nitrogen Dynamics, Soil and Water Nutrient Dynamics, Marine and Coastal Ecosystems, Hydrology and Watershed Management Studies, Recycling and Waste Management Techniques, and Fish Ecology and Management Studies.

Frequent publication venues for their research include:

  • Journal of Hazardous Materials
  • Environmental Science & Technology
  • The Science of The Total Environment
  • Geoderma
  • Water Research

Dahlgren's recent papers include:

  • Elevated temperature shifts soil N cycling from microbial immobilization to enhanced mineralization, nitrification and denitrification across global terrestrial ecosystems (2020, Global Change Biology)
  • Airborne microplastics in indoor and outdoor environments of a coastal city in Eastern China (2021, Journal of Hazardous Materials)
  • Airborne Microplastic Concentrations in Five Megacities of Northern and Southeast China (2021, Environmental Science & Technology)
  • Long-term (1980-2015) changes in net anthropogenic phosphorus inputs and riverine phosphorus export in the Yangtze River basin (2020, Water Research)
  • Nitrate pollution source apportionment, uncertainty and sensitivity analysis across a rural-urban river network based on δ15N/δ18O-NO3− isotopes and SIAR modeling (2022, Journal of Hazardous Materials)

The scientist has collaborated frequently with other researchers, including:

  • Jianming Xu
  • Zheng Chen
  • Xiaoliang Ji
  • Minghua Zhang
  • Xu Shang

Randy A. Dahlgren was recognized as a Fellow of the Soil Science Society of America (SSSA) in 2006.

Best Publications

  • TANNINS IN NUTRIENT DYNAMICS OF FOREST ECOSYSTEMS- A REVIEW

    Tamara E. C. Kraus;Randy A. Dahlgren;Robert J. Zasoski

  • Polyphenol control of nitrogen release from pine litter

    Robert R. Northup;Zengshou Yu;Randy A. Dahlgren;Kristina A. Vogt

  • Land use and land cover influence on water quality in the last free-flowing river draining the western Sierra Nevada, California

    Dylan S. Ahearn;Richard W. Sheibley;Randy A. Dahlgren;Michael Anderson

  • The Nature, Properties and Management of Volcanic Soils

    R.A. Dahlgren;M. Saigusa;F.C. Ugolini

  • Polyphenols as regulators of plant-litter-soil interactions in northern California’s pygmy forest: A positive feedback?

    Robert R. Northup;Randy A. Dahlgren;John G. McColl

  • Elevated temperature shifts soil N cycling from microbial immobilization to enhanced mineralization, nitrification and denitrification across global terrestrial ecosystems

    Zhongmin Dai;Mengjie Yu;Huaihai Chen;Haochun Zhao

  • Soil development along an elevational transect in the western Sierra Nevada, California

    R.A. Dahlgren;J.L. Boettinger;G.L. Huntington;R.G. Amundson

  • Contribution of bedrock nitrogen to high nitrate concentrations in stream water

    J. M. Holloway;R. A. Dahlgren;B. Hansen;W. H. Casey

  • A Review of Vegetated Buffers and a Meta-analysis of Their Mitigation Efficacy in Reducing Nonpoint Source Pollution

    Xuyang Zhang;Xingmei Liu;Minghua Zhang;Randy A. Dahlgren

  • Chapter 7 Physical Characteristics of Volcanic Ash Soils

    Masami Nanzyo;S. Shoji;R. Dahlgren

  • The effects of whole-tree clear-cutting on soil processes at the Hubbard Brook Experimental Forest, New Hampshire, USA

    R. A. Dahlgren;R. A. Dahlgren;C. T. Driscoll;C. T. Driscoll

  • Risk analysis of heavy metal concentration in surface waters across the rural-urban interface of the Wen-Rui Tang River, China

    Liyin Qu;Hong Huang;Fang Xia;Yuan Yuan Liu

  • Temperature, water content and wet–dry cycle effects on DOC production and carbon mineralization in agricultural peat soils

    Alex T. Chow;Kenneth K. Tanji;Suduan Gao;Randy A. Dahlgren

  • Nitrogen in rock: Occurrences and biogeochemical implications

    JoAnn M. Holloway;Randy A. Dahlgren

  • Contribution of amino compounds to dissolved organic nitrogen in forest soils

    Z. Yu;Q. Zhang;T.E.C. Kraus;R.A. Dahlgren

  • Convergent evidence for widespread rock nitrogen sources in Earth's surface environment.

    Benjamin Houlton;S. L. Morford;Randy A. Dahlgren

  • Airborne microplastics in indoor and outdoor environments of a coastal city in Eastern China.

    Zhonglu Liao;Xiaoliang Ji;Yuan Ma;Baoqiang Lv

  • Oak tree and grazing impacts on soil properties and nutrients in a California oak woodland

    R.A. Dahlgren;M.J. Singer;X. Huang

  • Impacts of land use and population density on seasonal surface water quality using a modified geographically weighted regression

    Qiang Chen;Kun Mei;Randy A. Dahlgren;Ting Wang

  • Simultaneous sorption of Cd, Cu, Ni, Zn, Pb, and Cr on soils treated with sewage sludge supernatant

    Suduan Gao;William J. Walker;Randy A. Dahlgren;Jeff Bold

Frequent Co-Authors

Kenneth W. Tate
Kenneth W. Tate University of California, Davis
Alex T. Chow
Alex T. Chow Clemson University
Edward R. Atwill
Edward R. Atwill University of California, Davis
Benjamin Z. Houlton
Benjamin Z. Houlton University of California, Davis
Michael J. Singer
Michael J. Singer University of California, Davis
Carol Kendall
Carol Kendall United States Geological Survey
Po Keung Wong
Po Keung Wong Chinese University of Hong Kong
William R. Horwath
William R. Horwath University of California, Davis
Robert G. M. Spencer
Robert G. M. Spencer Florida State University
Jianming Xu
Jianming Xu Zhejiang University

External Links

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Best Scientists Citing Randy A. Dahlgren

Davey L. Jones

Davey L. Jones

Bangor University

Publications: 43

Alex T. Chow

Alex T. Chow

Clemson University

Publications: 39

Charles T. Driscoll

Charles T. Driscoll

Syracuse University

Publications: 38

David A. Wardle

David A. Wardle

Umeå University

Publications: 37

Dale W. Johnson

Dale W. Johnson

University of Nevada Reno

Publications: 35

Robert G. M. Spencer

Robert G. M. Spencer

Florida State University

Publications: 32

Kenneth W. Tate

Kenneth W. Tate

University of California, Davis

Publications: 30

Aino Smolander

Aino Smolander

Finnish Forest Research Institute

Publications: 29

Stephen C. Hart

Stephen C. Hart

University of California, Merced

Publications: 29

Caroline M. Preston

Caroline M. Preston

Natural Resources Canada

Publications: 27

Leo M. Condron

Leo M. Condron

Lincoln University

Publications: 25

Bruno Delvaux

Bruno Delvaux

Université Catholique de Louvain

Publications: 25

Mark Farrell

Mark Farrell

Commonwealth Scientific and Industrial Research Organisation

Publications: 25

Brian A. Bergamaschi

Brian A. Bergamaschi

United States Geological Survey

Publications: 25

Josep Peñuelas

Josep Peñuelas

Centre for Ecological Research and Forestry Applications (CREAF), CSIC

Publications: 25

Paul W. Hill

Paul W. Hill

Bangor University

Publications: 23

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