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Christopher M. Clark

D-Index & Metrics

Medicine

D-Index
101
Citations
48035
World Ranking
7847
National Ranking
4090

Christopher M. Clark publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Christopher M. Clark sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 610 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 272 publications — 11th percentile

11% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Christopher M. Clark D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Christopher M. Clark sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 399 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 101 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Research.com Recognitions

  • 1980 - Palmer O. Johnson Memorial Award, American Educational Research Association

Overview

Christopher M. Clark is affiliated with the University of Pennsylvania in the United States and has contributed extensively to the fields of Environmental Science and Agricultural and Biological Sciences. Their research interests span key subfields including Global and Planetary Change, Nature and Landscape Conservation, Plant Science, Soil Science, and Atmospheric Science.

The scientist's work addresses numerous topics, with a particular focus on Plant Water Relations and Carbon Dynamics, Plant responses to elevated CO2, Fire effects on ecosystems, Soil Carbon and Nitrogen Dynamics, Forest Management and Policy, Forest ecology and management, and Soil and Water Nutrient Dynamics.

Frequent publication venues demonstrate the breadth of their research dissemination and include Environmental Research Letters, Global Change Biology, Journal of Geophysical Research Biogeosciences, Renewable and Sustainable Energy Reviews, and Environmental Research Communications.

Collaborations have been established with several co-authors, notably Robert D. Sabo, Jennifer Phelan, Kemen Austin, Kevin J. Horn, and R. Quinn Thomas, indicating a network of active research partnerships.

Among recent papers, notable works include:

  • "The impact of air pollution on terrestrial managed and natural vegetation," 2020, published in Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences
  • "Phosphorus Inventory for the Conterminous United States (2002-2012)," 2021, published in Journal of Geophysical Research Biogeosciences
  • "Grassland-to-cropland conversion increased soil, nutrient, and carbon losses in the US Midwest between 2008 and 2016," 2021, published in Environmental Research Letters
  • "A review of domestic land use change attributable to U.S. biofuel policy," 2022, published in Renewable and Sustainable Energy Reviews
  • "Considerations when using nutrient inventories to prioritize water quality improvement efforts across the US," 2021, published in Environmental Research Communications

In recognition of scholarly contributions, Christopher M. Clark received the Palmer O. Johnson Memorial Award from the American Educational Research Association in 1980.

Best Publications

  • Ubiquitinated TDP-43 in frontotemporal lobar degeneration and amyotrophic lateral sclerosis

    Manuela Neumann;Deepak M. Sampathu;Linda K. Kwong;Adam C. Truax

  • The consortium to establish a registry for alzheimer’s disease (CERAD). Part I. Clinical and neuropsychological assessment of alzheimer’s disease

    J. C. Morris;A. Heyman;R. C. Mohs;J. P. Hughes

  • Cerebrospinal fluid biomarker signature in Alzheimer's disease neuroimaging initiative subjects.

    Leslie M. Shaw;Hugo Vanderstichele;Malgorzata Knapik-Czajka;Christopher M. Clark

  • Use of Florbetapir-PET for Imaging β-Amyloid Pathology

    Christopher M. Clark;Julie A. Schneider;Barry J. Bedell;Thomas G. Beach

  • Cerebral PET with florbetapir compared with neuropathology at autopsy for detection of neuritic amyloid-β plaques: a prospective cohort study

    Christopher M Clark;Michael J Pontecorvo;Thomas G Beach;Barry J Bedell

  • Consensus report of the working group on: 'Molecular and biochemical markers of Alzheimer's disease'

    Peter Davies;Judith Resnick;Burton Resnick;Sid Gilman

  • Development of cognitive instruments for use in clinical trials of antidementia drugs: Additions to the Alzheimer's Disease Assessment Scale that broaden its scope.

    Richard C. Mohs;David Knopman;Ronald C. Petersen;Steven H. Ferris

  • Increase of brain oxidative stress in mild cognitive impairment: a possible predictor of Alzheimer disease.

    Domenico Praticò;Christopher M. Clark;Feyan Liun;Virginia Y.-M. Lee

  • Alpha-synuclein cortical Lewy bodies correlate with dementia in Parkinson’s disease

    H.I. Hurtig;J.Q. Trojanowski;J. Galvin;D. Ewbank

  • FDG-PET improves accuracy in distinguishing frontotemporal dementia and Alzheimer's disease

    Norman L. Foster;Judith L. Heidebrink;Christopher M. Clark;William J. Jagust

  • Validity and reliability of the Alzheimer's Disease Cooperative Study–Clinical Global Impression of Change.

    Lon S. Schneider;Jason T. Olin;Rachelle S. Doody;Christopher M. Clark

  • High Cerebrospinal Fluid Tau and Low Amyloid β42 Levels in the Clinical Diagnosis of Alzheimer Disease and Relation to Apolipoprotein E Genotype

    D. Galasko;L. Chang;R. Motter;C. M. Clark

  • The Consortium to Establish a Registry for Alzheimer's Disease (CERAD): Part IV. Rates of cognitive change in the longitudinal assessment of probable Alzheimer's disease

    J. C. Morris;S. Edland;C. Clark;D. Galasko

  • Spatial patterns of brain atrophy in MCI patients, identified via high-dimensional pattern classification, predict subsequent cognitive decline.

    Yong Fan;Nematollah Batmanghelich;Chris M. Clark;Christos Davatzikos

  • Frontotemporal dementia: clinicopathological correlations.

    Mark S. Forman;Jennifer Farmer;Julene K. Johnson;Christopher M. Clark

  • Consortium to Establish a Registry for Alzheimer's Disease (CERAD): the first twenty years.

    Gerda G. Fillenbaum;Gerda G. Fillenbaum;Gerald van Belle;John C. Morris;Richard C. Mohs

  • Concomitant TAR-DNA-binding protein 43 pathology is present in Alzheimer disease and corticobasal degeneration but not in other tauopathies.

    Kunihiro Uryu;Hanae Nakashima-Yasuda;Mark S. Forman;Linda K. Kwong

  • YKL-40: A Novel Prognostic Fluid Biomarker for Preclinical Alzheimer's Disease

    Rebecca Craig-Schapiro;Richard J. Perrin;Catherine M. Roe;Chengjie Xiong

  • The Consortium to Establish a Registry for Alzheimer's Disease (CERAD).: Part XI. Clinical milestones in patients with Alzheimer's disease followed over 3 years

    D. Galasko;S.D. Edland;J. C. Morris;C. Clark

  • The Consortium to Establish a Registry for Alzheimer's Disease (CERAD). Part VI. Family history assessment: A multicenter study of first-degree relatives of Alzheimer's disease probands and nondemented spouse controls

    J. M. Silverman;K. Raiford;S. Edland;G. Fillenbaum

Frequent Co-Authors

John Q. Trojanowski
John Q. Trojanowski University of Pennsylvania
Virginia M.-Y. Lee
Virginia M.-Y. Lee University of Pennsylvania
Steven E. Arnold
Steven E. Arnold Harvard University
Joseph F. Quinn
Joseph F. Quinn Oregon Health & Science University
Douglas Galasko
Douglas Galasko University of California, San Diego
Murray Grossman
Murray Grossman University of Pennsylvania
Elaine R. Peskind
Elaine R. Peskind University of Washington
Mark A. Mintun
Mark A. Mintun University of Pennsylvania
John C. Morris
John C. Morris Washington University in St. Louis
Sharon X. Xie
Sharon X. Xie University of Pennsylvania

External Links

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With these diverse online medical and healthcare degrees, students can tailor their educational journey to match their career ambitions in the evolving field of healthcare.

Best Scientists Citing Christopher M. Clark

John Q. Trojanowski

John Q. Trojanowski

University of Pennsylvania

Publications: 437

Kaj Blennow

Kaj Blennow

University of Gothenburg

Publications: 436

Henrik Zetterberg

Henrik Zetterberg

University of Gothenburg

Publications: 408

Virginia M.-Y. Lee

Virginia M.-Y. Lee

University of Pennsylvania

Publications: 209

Dennis W. Dickson

Dennis W. Dickson

Mayo Clinic

Publications: 200

Bruce L. Miller

Bruce L. Miller

University of California, San Francisco

Publications: 191

Ronald C. Petersen

Ronald C. Petersen

University of Pennsylvania

Publications: 190

Murray Grossman

Murray Grossman

University of Pennsylvania

Publications: 187

Michael W. Weiner

Michael W. Weiner

University of California, San Francisco

Publications: 181

Leslie M. Shaw

Leslie M. Shaw

University of Pennsylvania

Publications: 180

Philip Scheltens

Philip Scheltens

Amsterdam UMC

Publications: 168

Clifford R. Jack

Clifford R. Jack

Mayo Clinic

Publications: 158

William J. Jagust

William J. Jagust

University of California, Berkeley

Publications: 152

Harald Hampel

Harald Hampel

Eisai (United States)

Publications: 148

Victor L. Villemagne

Victor L. Villemagne

University of Pittsburgh

Publications: 138

Paul S. Aisen

Paul S. Aisen

University of Southern California

Publications: 136

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