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Nonprofit · Arlington · United States

Trout Unlimited

In research, Trout Unlimited stands highest in Physical Sciences (#16,597 of 17,446 worldwide), over all time. Relative to its size it is most specialised in Environmental Science (Environmental Science is 5.4× its share of world research).

tu.orgROR OpenAlex
World rank, 2022-now
#16,936
of 22,385 · #23,219 all time
Rank in United States
#2,458
of 3,332
Research works
362
▲ 41% vs 2018-21
Citations
6.5k
17.9 per fractional work
Top-10% rate
8.1%
all institutions 10.0%
vs its own fields
1.00×
1.00× is exactly expected
Open access
44%
world 40%
International
22%
world 18%
Trout Unlimited

What is Trout Unlimited known for in research?

The fields where it stands highest, over all time, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorks
Physical SciencesDomain #16,597 of 17,446 10.3%157

Each strip is that field's whole ranked pool, with the notch where Trout Unlimited sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Trout Unlimited work in?

In 2022-now, 43% of research at Trout Unlimited is in Physical Sciences, 24% in Health Sciences. Its largest fields are Environmental Science (27%), Medicine (19%), Social Sciences (15%).

Physical Sciences: 36 fractional works · 43.4% of its workEnvironmental Science: 23 fractional works · 27.0% of its workEcology: 13 fractional works · 15.8% of its workNature and Landscape Conservation: 4 fractional works · 4.5% of its workManagement, Monitoring, Policy and Law: 2 fractional works · 2.8% of its workWater Science and Technology: 1 fractional works · 1.1% of its workGlobal and Planetary Change: 1 fractional works · 0.9% of its workEnvironmental Chemistry: 1 fractional works · 0.6% of its workEnvironmental Engineering: 0 fractional works · 0.4% of its workEcological Modeling: 0 fractional works · 0.4% of its workPollution: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.3% of its workEngineering: 6 fractional works · 7.5% of its workCivil and Structural Engineering: 3 fractional works · 3.9% of its workMechanical Engineering: 1 fractional works · 0.9% of its workAerospace Engineering: 1 fractional works · 0.8% of its workSafety, Risk, Reliability and Quality: 0 fractional works · 0.5% of its workBiomedical Engineering: 0 fractional works · 0.4% of its workIndustrial and Manufacturing Engineering: 0 fractional works · 0.4% of its workElectrical and Electronic Engineering: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workComputer Science: 3 fractional works · 3.4% of its workArtificial Intelligence: 1 fractional works · 1.4% of its workInformation Systems: 1 fractional works · 1.4% of its workComputer Vision and Pattern Recognition: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPhysics and Astronomy: 2 fractional works · 2.5% of its workAtomic and Molecular Physics, and Optics: 1 fractional works · 0.7% of its workRadiation: 0 fractional works · 0.6% of its workAstronomy and Astrophysics: 0 fractional works · 0.5% of its workStatistical and Nonlinear Physics: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.4% of its workEarth and Planetary Sciences: 1 fractional works · 1.4% of its workAtmospheric Science: 1 fractional works · 0.9% of its workGeology: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workMaterials Science: 1 fractional works · 1.1% of its workMaterials Chemistry: 1 fractional works · 1.1% of its workMathematics: 0 fractional works · 0.4% of its workChemistry: 0 fractional works · 0.1% of its workHealth Sciences: 20 fractional works · 23.8% of its workMedicine: 16 fractional works · 19.4% of its workSurgery: 3 fractional works · 4.1% of its workEmergency Medicine: 2 fractional works · 2.4% of its workComplementary and alternative medicine: 2 fractional works · 2.2% of its workPulmonary and Respiratory Medicine: 1 fractional works · 1.4% of its workEpidemiology: 1 fractional works · 1.2% of its workRheumatology: 1 fractional works · 1.2% of its workInfectious Diseases: 1 fractional works · 1.0% of its workHepatology: 0 fractional works · 0.6% of its workOncology: 0 fractional works · 0.6% of its workPharmacology: 0 fractional works · 0.6% of its workGastroenterology: 0 fractional works · 0.5% of its workPublic Health, Environmental and Occupational Health: 0 fractional works · 0.4% of its workHematology: 0 fractional works · 0.4% of its workDermatology: 0 fractional works · 0.3% of its workRadiology, Nuclear Medicine and Imaging: 0 fractional works · 0.3% of its workEndocrinology, Diabetes and Metabolism: 0 fractional works · 0.3% of its workNephrology: 0 fractional works · 0.3% of its workGeriatrics and Gerontology: 0 fractional works · 0.3% of its workRehabilitation: 0 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 1.2% of its workHealth Professions: 3 fractional works · 3.7% of its workGeneral Health Professions: 2 fractional works · 2.2% of its workPharmacy: 0 fractional works · 0.6% of its workSpeech and Hearing: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.6% of its workNursing: 0 fractional works · 0.5% of its workNutrition and Dietetics: 0 fractional works · 0.5% of its workDentistry: 0 fractional works · 0.1% of its workSocial Sciences: 19 fractional works · 22.8% of its workSocial Sciences: 13 fractional works · 15.4% of its workSociology and Political Science: 4 fractional works · 4.6% of its workEducation: 3 fractional works · 3.8% of its workPolitical Science and International Relations: 3 fractional works · 3.1% of its workHealth: 1 fractional works · 0.8% of its workLaw: 1 fractional works · 0.8% of its workCultural Studies: 1 fractional works · 0.7% of its workTransportation: 0 fractional works · 0.4% of its workGender Studies: 0 fractional works · 0.4% of its workUrban Studies: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.4% of its workBusiness, Management and Accounting: 2 fractional works · 2.6% of its workStrategy and Management: 1 fractional works · 0.8% of its workBusiness and International Management: 0 fractional works · 0.6% of its workOrganizational Behavior and Human Resource Management: 0 fractional works · 0.6% of its workMarketing: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEconomics, Econometrics and Finance: 1 fractional works · 1.6% of its workEconomics and Econometrics: 1 fractional works · 1.6% of its workPsychology: 1 fractional works · 1.6% of its workClinical Psychology: 1 fractional works · 0.9% of its workSocial Psychology: 1 fractional works · 0.6% of its workArts and Humanities: 1 fractional works · 1.3% of its workPhilosophy: 0 fractional works · 0.4% of its workMuseology: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.6% of its workDecision Sciences: 0 fractional works · 0.3% of its workStatistics, Probability and Uncertainty: 0 fractional works · 0.3% of its workLife Sciences: 8 fractional works · 10.0% of its workAgricultural and Biological Sciences: 3 fractional works · 4.0% of its workAquatic Science: 1 fractional works · 0.9% of its workGeneral Agricultural and Biological Sciences: 1 fractional works · 0.7% of its workPlant Science: 1 fractional works · 0.7% of its workSoil Science: 0 fractional works · 0.6% of its workInsect Science: 0 fractional works · 0.5% of its workFood Science: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workBiochemistry, Genetics and Molecular Biology: 2 fractional works · 3.0% of its workGenetics: 1 fractional works · 1.4% of its workMolecular Biology: 1 fractional works · 0.9% of its workCancer Research: 0 fractional works · 0.3% of its workPhysiology: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workImmunology and Microbiology: 1 fractional works · 1.3% of its workImmunology: 1 fractional works · 0.9% of its workApplied Microbiology and Biotechnology: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workNeuroscience: 1 fractional works · 0.9% of its workNeurology: 1 fractional works · 0.7% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPharmacology, Toxicology and Pharmaceutics: 1 fractional works · 0.8% of its workToxicology: 1 fractional works · 0.8% of its workALL ITS WORKTrout Unlimited83fractional works, 2022-now
Life Sciences10%Physical Sciences43%Health Sciences24%Social Sciences23%

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 23 fields, with their numbers
    1. Environmental Science2327.0%
    2. Engineering67.5%
    3. Computer Science33.4%
    4. Physics and Astronomy22.5%
    5. Earth and Planetary Sciences11.4%
    6. Materials Science11.1%
    7. Mathematics00.4%
    8. Chemistry00.1%
    1. Medicine1619.4%
    2. Health Professions33.7%
    3. Nursing00.5%
    4. Dentistry00.1%
    1. Social Sciences1315.4%
    2. Business, Management and Accounting22.6%
    3. Economics, Econometrics and Finance11.6%
    4. Psychology11.6%
    5. Arts and Humanities11.3%
    6. Decision Sciences00.3%
    1. Agricultural and Biological Sciences34.0%
    2. Biochemistry, Genetics and Molecular Biology23.0%
    3. Immunology and Microbiology11.3%
    4. Neuroscience10.9%
    5. Pharmacology, Toxicology and Pharmaceutics10.8%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Trout Unlimited specialise in?

Where its research is concentrated relative to its size: Environmental Science takes 5.4× the share of its output that it takes of world research.

  1. Environmental ScienceField · 22.5 works5.4×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

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: 0.83× its world share, 3 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.56× its world share, 2 worksBiochemistry, Geneti…Immunology and Microbiology: 1.31× its world share, 1 worksImmunology and Micro…Neuroscience: 0.57× its world share, 1 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 2.27× its world share, 1 worksPharmacology, Toxico…Chemistry: 0.06× its world share, 0 worksChemistryComputer Science: 0.44× its world share, 3 worksComputer ScienceEarth and Planetary Sciences: 0.89× its world share, 1 worksEarth and Planetary …Engineering: 0.50× its world share, 6 worksEngineeringEnvironmental Science: 5.44× its world share, 22 worksEnvironmental ScienceMaterials Science: 0.31× its world share, 1 worksMaterials ScienceMathematics: 0.34× its world share, 0 worksMathematicsPhysics and Astronomy: 1.14× its world share, 2 worksPhysics and AstronomyDentistry: 0.27× its world share, 0 worksDentistryHealth Professions: 1.42× its world share, 3 worksHealth ProfessionsMedicine: 1.01× its world share, 16 worksMedicineNursing: 1.06× its world share, 0 worksNursingArts and Humanities: 0.45× its world share, 1 worksArts and HumanitiesBusiness, Management and Accounting: 0.79× its world share, 2 worksBusiness, Management…Decision Sciences: 0.29× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.75× its world share, 1 worksEconomics, Econometr…Psychology: 0.52× its world share, 1 worksPsychologySocial Sciences: 1.22× its world share, 13 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Environmental Science, 5.4×. Every wedge is a field page.

All 23 fields, with their numbers
  1. Environmental Science5.44×22 works
  2. Pharmacology, Toxicology and Pharmaceutics2.27×1 works
  3. Health Professions1.42×3 works
  4. Immunology and Microbiology1.31×1 works
  5. Social Sciences1.22×13 works
  6. Physics and Astronomy1.14×2 works
  7. Nursing1.06×0 works
  8. Medicine1.01×16 works
  9. Earth and Planetary Sciences0.89×1 works
  10. Agricultural and Biological Sciences0.83×3 works
  11. Business, Management and Accounting0.79×2 works
  12. Economics, Econometrics and Finance0.75×1 works
  13. Neuroscience0.57×1 works
  14. Biochemistry, Genetics and Molecular Biology0.56×2 works
  15. Psychology0.52×1 works
  16. Engineering0.50×6 works
  17. Arts and Humanities0.45×1 works
  18. Computer Science0.44×3 works
  19. Mathematics0.34×0 works
  20. Materials Science0.31×1 works
  21. Decision Sciences0.29×0 works
  22. Dentistry0.27×0 works
  23. Chemistry0.06×0 works

Who are the top researchers at Trout Unlimited?

Ranked on the quality score, Helen M. Neville, Kurt A. Fesenmyer and Kyle E. Martin lead among researchers whose main affiliation is Trout Unlimited.

  1. 1 Helen M. Neville United States · #1,466,549 worldwide 2.2k citations · 43 works
  2. 2 Kurt A. Fesenmyer United States · #1,495,111 worldwide 621 citations · 32 works
  3. 3 Kyle E. Martin United States · #2,034,411 worldwide 1.3k citations · 40 works
  4. 4 James E. Parsons United States · #2,221,203 worldwide 1.6k citations · 37 works
  5. 5 Jack E. Williams United States · #2,291,877 worldwide 4.9k citations · 127 works
  6. 6 Theodore A. Johnson United States · #3,568,989 worldwide 360 citations · 19 works
  7. 7 Robin D. Bjork United States · #3,574,426 worldwide 649 citations · 17 works
  8. 8 Jack Trout United States · #3,671,290 worldwide 2.1k citations · 73 works
  9. 9 Russell F. Lord United States · #3,815,656 worldwide 46 citations · 16 works
  10. 10 Michael Chodounský United States · #4,305,369 worldwide 0 citations · 60 works
All ranked researchers at Trout Unlimited

What are the most cited papers from Trout Unlimited?

The most cited paper from Trout Unlimited is "The Natural Flow Regime" (N. LeRoy Poff, J. David Allan, Mark B. Bain et al., 1997), with 6,478 citations. Next come "Ecological Theory and Community Restoration Ecology" (1,123) and "Assessing transferability of ecological models: an underappreciated aspect of statistical validation" (654).

Most cited papers
#PaperReleasedCitations
1 The Natural Flow Regime N. LeRoy Poff, J. David Allan, Mark B. Bain et al. · BioScience Dec 1997 6,478
2 Ecological Theory and Community Restoration Ecology Margaret A. Palmer, Richard F. Ambrose, N. LeRoy Poff · Restoration Ecology Open access Dec 1997 1,123
3 Assessing transferability of ecological models: an underappreciated aspect of statistical validation Seth J. Wenger, Julian D. Olden · Methods in Ecology and Evolution Open access 23 Jan 2012 654
4 Flow regime, temperature, and biotic interactions drive differential declines of trout species under climate change Seth J. Wenger, Daniel J. Isaak, Charles H. Luce et al. · Proceedings of the National Academy of Sciences Open access 15 Aug 2011 621
5 Morphology and Experimental Hydrodynamics of Fish Fin Control Surfaces GEORGE V. LAUDER, Eliot G. Drucker · IEEE Journal of Oceanic Engineering Jul 2004 344
All 60 most cited papers, with filters and sorting

Which keywords describe research at Trout Unlimited?

By fractional works in 2022-now, weighted toward what it does more of than the world: Risk Assessment, Fuzzy Mathematics, Set Pair Analysis, Climate Change, Invasive Species, Fisheries Sustainability, Freshwater Biodiversity and Habitat Fragmentation.

▲ 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 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Climate Change9▲ 4.1×27 topics
  2. Risk Assessment7▲ 13×3 topics
  3. Fuzzy Mathematics7▲ 401×1 topic
  4. Set Pair Analysis7▲ 401×1 topic
  5. Invasive Species6▲ 17×11 topics
  6. Fisheries Sustainability4▲ 56×2 topics
  7. Freshwater Biodiversity4▲ 74×2 topics
  8. Habitat Fragmentation4▲ 20×2 topics
  9. Conservation Challenges4▲ 94×1 topic
  10. Flow Regulation4▲ 94×1 topic
  11. Globalization4▲ 2.2×10 topics
  12. Environmental Attitudes3▲ 41×2 topics
  13. Environmental Education3▲ 21×2 topics
  14. Sediment Transport3▲ 20×2 topics
  15. Geomorphological Effects2▲ 80×2 topics
  16. Diagnosis2▲ 2.9×6 topics
  17. History2▲ 3.6×4 topics
  18. Identity2▲ 3.4×5 topics
  19. Infrastructure2▲ 21×2 topics
  20. River Restoration2▲ 57×2 topics
  21. Social Norms2▲ 25×2 topics
  22. Energy Conservation2▲ 48×1 topic
  23. Pro-environmental Behavior2▲ 48×1 topic
  24. Fluvial Processes2▲ 81×1 topic
  25. Riparian Vegetation2▲ 81×1 topic
  26. Colonialism2▲ 4.6×3 topics
  27. Gender2▲ 4.0×4 topics
  28. Geodetic2▲ 269×1 topic
  29. Monitoring2▲ 23×1 topic
  30. Religion2▲ 4.7×2 topics
  31. Neoliberalism2▲ 5.8×3 topics
  32. Population Dynamics2▲ 7.8×5 topics
  33. Risk Perception2▲ 7.2×4 topics
  34. Herbal Medicine2▲ 6.4×1 topic
  35. Society2▲ 9.4×1 topic
  36. Traditional Chinese Medicine2▲ 15×1 topic
  37. Vietnam2▲ 45×1 topic
  38. Children1▲ 7.2×3 topics
  39. Comparative Education1▲ 71×1 topic
  40. Education Policy1▲ 24×1 topic

Which research topics does Trout Unlimited publish most on?

By volume in 2022-now: Research studies in Vietnam, Fish Ecology and Management Studies, Environmental Education and Sustainability and Hydrology and Sediment Transport Processes.

Research studies in Viet…7Research studies in Vietnam: 7 fractional worksFish Ecology and Managem…4Fish Ecology and Management Studies: 4 fractional worksEnvironmental Education …2Environmental Education and Sustainability: 2 fractional worksHydrology and Sediment Transport Processes: 2 fractional worksGeodetic Measurements and Engineering Structures: 2 fractional worksMedical Research and Tre…2Medical Research and Treatments: 2 fractional worksVietnamese History and Culture Studies: 2 fractional worksGlobal Educational Policies and Reforms: 1 fractional worksCongenital gastrointestinal and neural anomalies: 1 fractional worksPelvic floor disorders treatments: 1 fractional works
EcologyNature and Landscape ConservationManagement, Monitoring, Policy and LawCivil and Structural Engineering5 others

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

  1. 1 Research studies in Vietnam Ecology 7 works
  2. 2 Fish Ecology and Management Studies Nature and Landscape Conservation 4 works
  3. 3 Environmental Education and Sustainability Management, Monitoring, Policy and Law 2 works
  4. 4 Hydrology and Sediment Transport Processes Ecology 2 works
  5. 5 Geodetic Measurements and Engineering Structures Civil and Structural Engineering 2 works
  6. 6 Medical Research and Treatments Complementary and alternative medicine 2 works
  7. 7 Vietnamese History and Culture Studies Sociology and Political Science 2 works
  8. 8 Global Educational Policies and Reforms Political Science and International Relations 1 works
  9. 9 Congenital gastrointestinal and neural anomalies Surgery 1 works
  10. 10 Pelvic floor disorders treatments Rheumatology 1 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 available43.6%not open56.4%

World: 40% of research is openly available.

with international co-authors22.1%domestic only77.9%

World: 18% is written across borders.

How has Trout Unlimited's research output changed?

Output in 2022-2025 was 41% 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 Trout Unlimited as a percentage of every work published that year, 0.00032% in 2024.

still counting0.00050%0.0010%0.0015%Trout Unlimited0.00044% in 202519801990200020102020

Fractional works of Trout Unlimited over all fractional works that year. How the balance of science has shifted.

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