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Nonprofit · Oakland · United States

Sierra Club

sierraclub.orgROR OpenAlex
World rank, all time
#28,757
of 34,923
Rank in United States
#6,051
of 7,310
Research works
173
▲ 53% vs 2018-21
Citations
1.8k
10.5 per fractional work
Top-10% rate
5.0%
all institutions 10.0%
vs its own fields
0.87×
1.00× is exactly expected
Open access
36%
world 40%
International
16%
world 18%
Sierra Club

Which fields of science does Sierra Club work in?

In 2022-now, 45% of research at Sierra Club is in Physical Sciences, 34% in Social Sciences. Its largest fields are Environmental Science (18%), Medicine (12%), Computer Science (9%). It does 1.3× the world's share of Social Sciences.

Physical Sciences: 15 fractional works · 45.5% of its workEnvironmental Science: 6 fractional works · 18.1% of its workManagement, Monitoring, Policy and Law: 2 fractional works · 5.6% of its workEcology: 2 fractional works · 5.2% of its workEnvironmental Engineering: 1 fractional works · 2.6% of its workWater Science and Technology: 1 fractional works · 1.8% of its workGlobal and Planetary Change: 0 fractional works · 1.2% of its workHealth, Toxicology and Mutagenesis: 0 fractional works · 0.5% of its workPollution: 0 fractional works · 0.5% of its workNature and Landscape Conservation: 0 fractional works · 0.5% of its workEcological Modeling: 0 fractional works · 0.2% of its workComputer Science: 3 fractional works · 9.0% of its workInformation Systems: 1 fractional works · 2.8% of its workComputational Theory and Mathematics: 1 fractional works · 2.6% of its workArtificial Intelligence: 1 fractional works · 1.9% of its workComputer Networks and Communications: 0 fractional works · 1.5% of its workComputer Vision and Pattern Recognition: 0 fractional works · 0.2% of its workMathematics: 2 fractional works · 7.0% of its workMathematical Physics: 1 fractional works · 2.1% of its workNumerical Analysis: 0 fractional works · 1.6% of its workApplied Mathematics: 0 fractional works · 1.3% of its workAlgebra and Number Theory: 0 fractional works · 1.0% of its workGeometry and Topology: 0 fractional works · 1.0% of its workEngineering: 2 fractional works · 5.0% of its workElectrical and Electronic Engineering: 1 fractional works · 2.1% of its workControl and Systems Engineering: 0 fractional works · 1.6% of its workOcean Engineering: 0 fractional works · 0.8% of its workAerospace Engineering: 0 fractional works · 0.3% of its workBiomedical Engineering: 0 fractional works · 0.2% of its workPhysics and Astronomy: 1 fractional works · 4.6% of its workAstronomy and Astrophysics: 1 fractional works · 3.4% of its workNuclear and High Energy Physics: 0 fractional works · 0.7% of its workAtomic and Molecular Physics, and Optics: 0 fractional works · 0.5% of its workEarth and Planetary Sciences: 0 fractional works · 1.1% of its workAtmospheric Science: 0 fractional works · 0.4% of its workGeochemistry and Petrology: 0 fractional works · 0.3% of its workOceanography: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workMaterials Science: 0 fractional works · 0.7% of its workBiomaterials: 0 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.1% of its workSocial Sciences: 11 fractional works · 33.6% of its workSocial Sciences: 3 fractional works · 8.4% of its workSociology and Political Science: 2 fractional works · 7.1% of its workEducation: 0 fractional works · 0.7% of its workDemography: 0 fractional works · 0.3% of its workSafety Research: 0 fractional works · 0.3% of its workBusiness, Management and Accounting: 2 fractional works · 7.7% of its workStrategy and Management: 1 fractional works · 4.2% of its workAccounting: 1 fractional works · 3.1% of its workBusiness and International Management: 0 fractional works · 0.4% of its workArts and Humanities: 2 fractional works · 6.8% of its workHistory: 1 fractional works · 3.1% of its workHistory and Philosophy of Science: 0 fractional works · 1.6% of its workLiterature and Literary Theory: 0 fractional works · 1.0% of its workMuseology: 0 fractional works · 1.0% of its workEconomics, Econometrics and Finance: 2 fractional works · 6.0% of its workFinance: 1 fractional works · 2.6% of its workEconomics and Econometrics: 1 fractional works · 1.8% of its workGeneral Economics, Econometrics and Finance: 0 fractional works · 1.6% of its workSmaller subfields together: 0 fractional works · 0.0% of its workPsychology: 1 fractional works · 4.5% of its workSocial Psychology: 1 fractional works · 2.2% of its workClinical Psychology: 0 fractional works · 0.9% of its workDevelopmental and Educational Psychology: 0 fractional works · 0.9% of its workApplied Psychology: 0 fractional works · 0.5% of its workDecision Sciences: 0 fractional works · 0.2% of its workHealth Sciences: 5 fractional works · 14.8% of its workMedicine: 4 fractional works · 11.8% of its workPhysiology: 1 fractional works · 2.3% of its workPulmonary and Respiratory Medicine: 1 fractional works · 2.0% of its workNeurology: 0 fractional works · 1.4% of its workPublic Health, Environmental and Occupational Health: 0 fractional works · 1.1% of its workCardiology and Cardiovascular Medicine: 0 fractional works · 1.0% of its workDermatology: 0 fractional works · 0.5% of its workEpidemiology: 0 fractional works · 0.5% of its workGenetics: 0 fractional works · 0.5% of its workHematology: 0 fractional works · 0.5% of its workEndocrinology, Diabetes and Metabolism: 0 fractional works · 0.4% of its workInfectious Diseases: 0 fractional works · 0.3% of its workOncology: 0 fractional works · 0.3% of its workOrthopedics and Sports Medicine: 0 fractional works · 0.2% of its workRadiology, Nuclear Medicine and Imaging: 0 fractional works · 0.2% of its workSurgery: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workHealth Professions: 1 fractional works · 2.0% of its workGeneral Health Professions: 0 fractional works · 0.9% of its workPhysical Therapy, Sports Therapy and Rehabilitation: 0 fractional works · 0.6% of its workSpeech and Hearing: 0 fractional works · 0.5% of its workNursing: 0 fractional works · 1.0% of its workNutrition and Dietetics: 0 fractional works · 1.0% of its workLife Sciences: 2 fractional works · 6.1% of its workAgricultural and Biological Sciences: 1 fractional works · 3.4% of its workPlant Science: 0 fractional works · 1.3% of its workEcology, Evolution, Behavior and Systematics: 0 fractional works · 1.0% of its workAquatic Science: 0 fractional works · 0.6% of its workGeneral Agricultural and Biological Sciences: 0 fractional works · 0.2% of its workFood Science: 0 fractional works · 0.2% of its workBiochemistry, Genetics and Molecular Biology: 1 fractional works · 2.4% of its workMolecular Biology: 0 fractional works · 1.2% of its workGenetics: 0 fractional works · 0.9% of its workCell Biology: 0 fractional works · 0.2% of its workNeuroscience: 0 fractional works · 0.3% of its workNeurology: 0 fractional works · 0.3% of its workALL ITS WORKSierra Club32fractional works, 2022-now
Life Sciences6%Physical Sciences45%Health Sciences15%Social Sciences34%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 19 fields, with their numbers
    1. Environmental Science618.1%
    2. Computer Science39.0%
    3. Mathematics27.0%
    4. Engineering25.0%
    5. Physics and Astronomy14.6%
    6. Earth and Planetary Sciences01.1%
    7. Materials Science00.7%
    1. Social Sciences38.4%
    2. Business, Management and Accounting27.7%
    3. Arts and Humanities26.8%
    4. Economics, Econometrics and Finance26.0%
    5. Psychology14.5%
    6. Decision Sciences00.2%
    1. Medicine411.8%
    2. Health Professions12.0%
    3. Nursing01.0%
    1. Agricultural and Biological Sciences13.4%
    2. Biochemistry, Genetics and Molecular Biology12.4%
    3. Neuroscience00.3%
All of science, and how each field's share has moved since 1950: the Science domain explorer

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.72× its world share, 1 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.45× its world share, 1 worksBiochemistry, Geneti…Neuroscience: 0.21× its world share, 0 worksNeuroscienceComputer Science: 1.16× its world share, 3 worksComputer ScienceEarth and Planetary Sciences: 0.67× its world share, 0 worksEarth and Planetary …Engineering: 0.34× its world share, 2 worksEngineeringEnvironmental Science: 3.64× its world share, 6 worksEnvironmental ScienceMaterials Science: 0.19× its world share, 0 worksMaterials ScienceMathematics: 5.98× its world share, 2 worksMathematicsPhysics and Astronomy: 2.05× its world share, 2 worksPhysics and AstronomyHealth Professions: 0.76× its world share, 1 worksHealth ProfessionsMedicine: 0.61× its world share, 4 worksMedicineNursing: 2.13× its world share, 0 worksNursingArts and Humanities: 2.35× its world share, 2 worksArts and HumanitiesBusiness, Management and Accounting: 2.38× its world share, 2 worksBusiness, Management…Decision Sciences: 0.18× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 2.80× its world share, 2 worksEconomics, Econometr…Psychology: 1.46× its world share, 1 worksPsychologySocial Sciences: 0.67× its world share, 3 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Mathematics, 6.0×. Every wedge is a field page.

All 19 fields, with their numbers
  1. Mathematics5.98×2 works
  2. Environmental Science3.64×6 works
  3. Economics, Econometrics and Finance2.80×2 works
  4. Business, Management and Accounting2.38×2 works
  5. Arts and Humanities2.35×2 works
  6. Nursing2.13×0 works
  7. Physics and Astronomy2.05×2 works
  8. Psychology1.46×1 works
  9. Computer Science1.16×3 works
  10. Health Professions0.76×1 works
  11. Agricultural and Biological Sciences0.72×1 works
  12. Earth and Planetary Sciences0.67×0 works
  13. Social Sciences0.67×3 works
  14. Medicine0.61×4 works
  15. Biochemistry, Genetics and Molecular Biology0.45×1 works
  16. Engineering0.34×2 works
  17. Neuroscience0.21×0 works
  18. Materials Science0.19×0 works
  19. Decision Sciences0.18×0 works

Who are the top researchers at Sierra Club?

Ranked on the quality score, Kim S. Haddow, Patricia J. Scharlin and Martha Klein lead among researchers whose main affiliation is Sierra Club.

  1. 1 Kim S. Haddow United States · #2,714,919 worldwide 89 citations · 31 works
  2. 2 Patricia J. Scharlin United States · #3,242,609 worldwide 25 citations · 21 works
  3. 3 Martha Klein United States · #3,433,960 worldwide 253 citations · 22 works
  4. 4 Ken Kramer United States · #3,919,205 worldwide 85 citations · 26 works
All ranked researchers at Sierra Club

What are the most cited papers from Sierra Club?

The most cited paper from Sierra Club is "THE EFFECTS OF PSYCHOLOGICAL STRESS ON HUMANS: INCREASED PRODUCTION OF PRO-INFLAMMATORY CYTOKINES AND Th1-LIKE RESPONSE IN STRESS-INDUCED ANXIETY" (Michael H. J. Maes, Cai Song, Aihua Lin et al., 1998), with 778 citations. Next come "Fatty acid composition in major depression: decreased ω3 fractions in cholesteryl esters and increased C20:4ω6C20:5ω3 ratio in cholesteryl esters and phospholipids" (424) and "An assessment of inflammation in the reservoir after restorative proctocolectomy with ileoanal ileal reservoir" (386).

Most cited papers
#PaperReleasedCitations
1 THE EFFECTS OF PSYCHOLOGICAL STRESS ON HUMANS: INCREASED PRODUCTION OF PRO-INFLAMMATORY CYTOKINES AND Th1-LIKE RESPONSE IN STRESS-INDUCED ANXIETY Michael H. J. Maes, Cai Song, Aihua Lin et al. · Cytokine Apr 1998 778
2 Fatty acid composition in major depression: decreased ω3 fractions in cholesteryl esters and increased C20:4ω6C20:5ω3 ratio in cholesteryl esters and phospholipids Michael H. J. Maes, Ronald S. Smith, Armand B. Christophe et al. · Journal of Affective Disorders Apr 1996 424
3 An assessment of inflammation in the reservoir after restorative proctocolectomy with ileoanal ileal reservoir Robert L. Moskowitz, Neil A. Shepherd, R J Nicholls · International Journal of Colorectal Disease Sep 1986 386
4 Lower serum high‐density lipoprotein cholesterol (HDL‐C) in major depression and in depressed men with serious suicidal attempts: relationship with immune‐inflammatory markers Michael H. J. Maes, Ricardo Luiz Smith, A. Christophe et al. · Acta Psychiatrica Scandinavica Mar 1997 363
5 Recent advances on the use of natural and safe alternatives to conventional methods to control postharvest gray mold of table grapes Gianfranco Romanazzi, Amnon Lichter, Franka Mlikota Gabler et al. · Postharvest Biology and Technology 22 Aug 2011 268
All 60 most cited papers, with filters and sorting

Which keywords describe research at Sierra Club?

By fractional works in 2022-now, weighted toward what it does more of than the world: Economic Growth, Climate Change, Social Justice, Sustainable Development, History, Philanthropy, Biodiversity and Sustainability.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 20 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 20 words, with their numbers
  1. Climate Change3▲ 3.1×23 topics
  2. Economic Growth2▲ 8.3×3 topics
  3. Sustainable Development2▲ 4.2×6 topics
  4. Machine Learning2▲ 1.75×9 topics
  5. Sustainability2▲ 2.4×10 topics
  6. Globalization2▲ 2.6×3 topics
  7. Social Justice2▲ 8.7×4 topics
  8. History2▲ 6.8×3 topics
  9. Biodiversity1▲ 5.5×10 topics
  10. Philanthropy1▲ 99×2 topics
  11. Epidemiology1▼ 0.83×5 topics
  12. Inflammation1▲ 1.57×4 topics
  13. Environmental Sustainability1▲ 19×1 topic
  14. France1▲ 190×1 topic
  15. Income Inequality1▲ 22×1 topic
  16. Iterative Methods1▲ 85×2 topics
  17. Monetary Policy1▲ 13×3 topics
  18. Poverty Measurement1▲ 167×1 topic
  19. Sociopolitical1▲ 92×1 topic
  20. Sustainability Indicators1▲ 48×1 topic

Which research topics does Sierra Club publish most on?

By volume in 2022-now: French Historical and Cultural Studies, Sustainable Development and Environmental Policy, Income, Poverty, and Inequality and Public-Private Partnership Projects.

French Historical and Cu…1French Historical and Cultural Studies: 1 fractional worksSustainable Development …1Sustainable Development and Environmental Policy: 1 fractional worksIncome, Poverty, and Inequality: 1 fractional worksPublic-Private Partnership Projects: 1 fractional worksAir Quality Monitoring and Forecasting: 1 fractional worksLife Cycle Costing Analysis: 1 fractional worksHomotopy and Cohomology in Algebraic Topology: 1 fractional worksValue Engineering and Ma…1Value Engineering and Management: 1 fractional worksWildlife Ecology and Conservation: 1 fractional worksIterative Methods for Nonlinear Equations: 0 fractional works
HistoryManagement, Monitoring, Policy and LawSociology and Political ScienceStrategy and Management5 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 French Historical and Cultural Studies History 1 works
  2. 2 Sustainable Development and Environmental Policy Management, Monitoring, Policy and Law 1 works
  3. 3 Income, Poverty, and Inequality Sociology and Political Science 1 works
  4. 4 Public-Private Partnership Projects Strategy and Management 1 works
  5. 5 Air Quality Monitoring and Forecasting Environmental Engineering 1 works
  6. 6 Life Cycle Costing Analysis Accounting 1 works
  7. 7 Homotopy and Cohomology in Algebraic Topology Mathematical Physics 1 works
  8. 8 Value Engineering and Management Strategy and Management 1 works
  9. 9 Wildlife Ecology and Conservation Ecology 1 works
  10. 10 Iterative Methods for Nonlinear Equations Numerical Analysis 0 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available36.0%not open64.0%

World: 40% of research is openly available.

with international co-authors16.4%domestic only83.6%

World: 18% is written across borders.

How has Sierra Club's research output changed?

Output in 2022-2025 was 53% higher than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Sierra Club as a percentage of every work published that year, 0.000085% in 2024.

still counting0.00050%0.0010%0.0015%Sierra Club0.00015% in 202519801990200020102020

Fractional works of Sierra Club over all fractional works that year. How the balance of science has shifted.

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Sierra Club on Science Explorer

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