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University · Sofia · Bulgaria

Sofia University "St. Kliment Ohridski"

In research, Sofia University "St. Kliment Ohridski" stands highest in Social Sciences (#3,615 of 9,585 worldwide), Physical Sciences (#5,030 of 10,670 worldwide) and Arts and Humanities (#1,124 of 1,896 worldwide), 2022-now. Relative to its size it is most specialised in Paleontology, Ecology, Evolution, Behavior and Systematics and Oceanography (Paleontology is 16.6× its share of world research).

uni-sofia.bgROR OpenAlex
World rank, 2022-now
#4,889
of 22,385 · #7,822 all time
Rank in Bulgaria
#4
of 64
Research works
13k
▲ 26% vs 2018-21
Citations
144k
10.8 per fractional work
Top-10% rate
5.3%
all institutions 10.0%
vs its own fields
0.65×
1.00× is exactly expected
Open access
38%
world 40%
International
22%
world 18%
Sofia University "St. Kliment Ohridski"

What is Sofia University "St. Kliment Ohridski" known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Social SciencesDomain #3,615 of 9,585 6.8%669 #6336
Physical SciencesDomain #5,030 of 10,670 4.5%1,123 #5238
Arts and HumanitiesField #1,124 of 1,896 6.0%120 #2535
Life SciencesDomain #4,109 of 6,403 4.5%303 #7512
Agricultural and Biological SciencesField #2,154 of 3,157 3.7%144 #3834
Physics and AstronomyField #1,066 of 1,417 4.4%154 #1537
MathematicsField #808 of 1,051 5.7%87 #1321
ChemistryField #1,016 of 1,299 4.2%82 #1773
MedicineField #7,062 of 8,541 6.0%189 #12755
Environmental ScienceField #2,760 of 3,334 4.2%170 #4165

Each strip is that field's whole ranked pool, with the notch where Sofia University "St. Kliment Ohridski" 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 of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022-now. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Social Sciences#6,336 #3,615
  2. Physical Sciences#5,238 #5,030
  3. Arts and Humanities#2,535 #1,124
  4. Life Sciences#7,512 #4,109
  5. Agricultural and Biological Sciences#3,834 #2,154
  6. Physics and Astronomy#1,537 #1,066
  7. Mathematics#1,321 #808
  8. Chemistry#1,773 #1,016
  9. Medicine#12,755 #7,062
  10. Environmental Science#4,165 #2,760
all time2022-now, better2022-now, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

Which fields of science does Sofia University "St. Kliment Ohridski" work in?

In 2022-now, 50% of research at Sofia University "St. Kliment Ohridski" is in Physical Sciences, 26% in Social Sciences. Its largest fields are Social Sciences (13%), Environmental Science (10%), Computer Science (8%). It does 1.3× the world's share of Physical Sciences.

Physical Sciences: 1,469 fractional works · 49.7% of its workEnvironmental Science: 305 fractional works · 10.3% of its workEcology: 93 fractional works · 3.2% of its workGlobal and Planetary Change: 72 fractional works · 2.4% of its workManagement, Monitoring, Policy and Law: 31 fractional works · 1.0% of its workEnvironmental Chemistry: 29 fractional works · 1.0% of its workEnvironmental Engineering: 20 fractional works · 0.7% of its workWater Science and Technology: 15 fractional works · 0.5% of its workHealth, Toxicology and Mutagenesis: 14 fractional works · 0.5% of its workPollution: 11 fractional works · 0.4% of its workIndustrial and Manufacturing Engineering: 10 fractional works · 0.3% of its workNature and Landscape Conservation: 7 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.1% of its workComputer Science: 239 fractional works · 8.1% of its workArtificial Intelligence: 89 fractional works · 3.0% of its workInformation Systems: 58 fractional works · 1.9% of its workComputer Vision and Pattern Recognition: 24 fractional works · 0.8% of its workComputational Theory and Mathematics: 21 fractional works · 0.7% of its workComputer Networks and Communications: 18 fractional works · 0.6% of its workComputer Science Applications: 12 fractional works · 0.4% of its workSignal Processing: 6 fractional works · 0.2% of its workSmaller subfields together: 11 fractional works · 0.4% of its workEngineering: 220 fractional works · 7.4% of its workElectrical and Electronic Engineering: 46 fractional works · 1.6% of its workBiomedical Engineering: 34 fractional works · 1.1% of its workControl and Systems Engineering: 23 fractional works · 0.8% of its workMechanical Engineering: 22 fractional works · 0.8% of its workAerospace Engineering: 19 fractional works · 0.6% of its workBuilding and Construction: 16 fractional works · 0.5% of its workComputational Mechanics: 12 fractional works · 0.4% of its workOcean Engineering: 10 fractional works · 0.4% of its workMechanics of Materials: 10 fractional works · 0.3% of its workIndustrial and Manufacturing Engineering: 9 fractional works · 0.3% of its workMedia Technology: 8 fractional works · 0.3% of its workSmaller subfields together: 12 fractional works · 0.4% of its workEarth and Planetary Sciences: 180 fractional works · 6.1% of its workPaleontology: 59 fractional works · 2.0% of its workOceanography: 49 fractional works · 1.7% of its workGeophysics: 30 fractional works · 1.0% of its workAtmospheric Science: 20 fractional works · 0.7% of its workGeochemistry and Petrology: 10 fractional works · 0.3% of its workGeology: 6 fractional works · 0.2% of its workSmaller subfields together: 5 fractional works · 0.2% of its workPhysics and Astronomy: 174 fractional works · 5.9% of its workAtomic and Molecular Physics, and Optics: 49 fractional works · 1.7% of its workAstronomy and Astrophysics: 42 fractional works · 1.4% of its workNuclear and High Energy Physics: 30 fractional works · 1.0% of its workStatistical and Nonlinear Physics: 24 fractional works · 0.8% of its workRadiation: 20 fractional works · 0.7% of its workCondensed Matter Physics: 6 fractional works · 0.2% of its workSmaller subfields together: 3 fractional works · 0.1% of its workMaterials Science: 134 fractional works · 4.5% of its workMaterials Chemistry: 79 fractional works · 2.7% of its workBiomaterials: 27 fractional works · 0.9% of its workElectronic, Optical and Magnetic Materials: 16 fractional works · 0.5% of its workSmaller subfields together: 12 fractional works · 0.4% of its workMathematics: 98 fractional works · 3.3% of its workApplied Mathematics: 25 fractional works · 0.8% of its workNumerical Analysis: 16 fractional works · 0.5% of its workMathematical Physics: 15 fractional works · 0.5% of its workGeometry and Topology: 11 fractional works · 0.4% of its workStatistics and Probability: 10 fractional works · 0.3% of its workAlgebra and Number Theory: 9 fractional works · 0.3% of its workModeling and Simulation: 8 fractional works · 0.3% of its workSmaller subfields together: 4 fractional works · 0.1% of its workChemistry: 88 fractional works · 3.0% of its workOrganic Chemistry: 42 fractional works · 1.4% of its workSpectroscopy: 13 fractional works · 0.4% of its workPhysical and Theoretical Chemistry: 11 fractional works · 0.4% of its workInorganic Chemistry: 11 fractional works · 0.4% of its workAnalytical Chemistry: 9 fractional works · 0.3% of its workSmaller subfields together: 3 fractional works · 0.1% of its workEnergy: 22 fractional works · 0.7% of its workRenewable Energy, Sustainability and the Environment: 19 fractional works · 0.6% of its workSmaller subfields together: 3 fractional works · 0.1% of its workChemical Engineering: 10 fractional works · 0.3% of its workSocial Sciences: 781 fractional works · 26.5% of its workSocial Sciences: 396 fractional works · 13.4% of its workSociology and Political Science: 122 fractional works · 4.1% of its workPolitical Science and International Relations: 79 fractional works · 2.7% of its workEducation: 55 fractional works · 1.9% of its workCultural Studies: 23 fractional works · 0.8% of its workCommunication: 16 fractional works · 0.5% of its workLaw: 16 fractional works · 0.5% of its workTransportation: 15 fractional works · 0.5% of its workAnthropology: 13 fractional works · 0.4% of its workSafety Research: 8 fractional works · 0.3% of its workDemography: 8 fractional works · 0.3% of its workGeography, Planning and Development: 6 fractional works · 0.2% of its workUrban Studies: 6 fractional works · 0.2% of its workSmaller subfields together: 30 fractional works · 1.0% of its workArts and Humanities: 142 fractional works · 4.8% of its workLanguage and Linguistics: 35 fractional works · 1.2% of its workLiterature and Literary Theory: 27 fractional works · 0.9% of its workArcheology: 19 fractional works · 0.6% of its workPhilosophy: 17 fractional works · 0.6% of its workClassics: 14 fractional works · 0.5% of its workHistory: 13 fractional works · 0.4% of its workReligious studies: 7 fractional works · 0.2% of its workSmaller subfields together: 11 fractional works · 0.4% of its workEconomics, Econometrics and Finance: 74 fractional works · 2.5% of its workEconomics and Econometrics: 45 fractional works · 1.5% of its workFinance: 22 fractional works · 0.7% of its workGeneral Economics, Econometrics and Finance: 7 fractional works · 0.2% of its workPsychology: 71 fractional works · 2.4% of its workSocial Psychology: 19 fractional works · 0.7% of its workDevelopmental and Educational Psychology: 18 fractional works · 0.6% of its workClinical Psychology: 16 fractional works · 0.5% of its workExperimental and Cognitive Psychology: 13 fractional works · 0.4% of its workSmaller subfields together: 5 fractional works · 0.2% of its workBusiness, Management and Accounting: 65 fractional works · 2.2% of its workManagement Information Systems: 19 fractional works · 0.6% of its workStrategy and Management: 18 fractional works · 0.6% of its workOrganizational Behavior and Human Resource Management: 7 fractional works · 0.2% of its workManagement of Technology and Innovation: 7 fractional works · 0.2% of its workAccounting: 6 fractional works · 0.2% of its workMarketing: 6 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.0% of its workDecision Sciences: 33 fractional works · 1.1% of its workManagement Science and Operations Research: 18 fractional works · 0.6% of its workInformation Systems and Management: 9 fractional works · 0.3% of its workSmaller subfields together: 6 fractional works · 0.2% of its workLife Sciences: 422 fractional works · 14.3% of its workAgricultural and Biological Sciences: 228 fractional works · 7.7% of its workEcology, Evolution, Behavior and Systematics: 95 fractional works · 3.2% of its workPlant Science: 52 fractional works · 1.7% of its workFood Science: 29 fractional works · 1.0% of its workInsect Science: 22 fractional works · 0.7% of its workAquatic Science: 13 fractional works · 0.4% of its workSoil Science: 8 fractional works · 0.3% of its workSmaller subfields together: 10 fractional works · 0.3% of its workBiochemistry, Genetics and Molecular Biology: 138 fractional works · 4.7% of its workMolecular Biology: 85 fractional works · 2.9% of its workGenetics: 22 fractional works · 0.7% of its workCancer Research: 7 fractional works · 0.2% of its workSmaller subfields together: 24 fractional works · 0.8% of its workNeuroscience: 22 fractional works · 0.8% of its workCognitive Neuroscience: 13 fractional works · 0.4% of its workSmaller subfields together: 9 fractional works · 0.3% of its workImmunology and Microbiology: 22 fractional works · 0.7% of its workImmunology: 13 fractional works · 0.4% of its workSmaller subfields together: 8 fractional works · 0.3% of its workPharmacology, Toxicology and Pharmaceutics: 12 fractional works · 0.4% of its workPharmaceutical Science: 8 fractional works · 0.3% of its workSmaller subfields together: 4 fractional works · 0.1% of its workHealth Sciences: 281 fractional works · 9.5% of its workMedicine: 218 fractional works · 7.4% of its workRadiology, Nuclear Medicine and Imaging: 21 fractional works · 0.7% of its workSurgery: 16 fractional works · 0.5% of its workPulmonary and Respiratory Medicine: 15 fractional works · 0.5% of its workEpidemiology: 15 fractional works · 0.5% of its workPublic Health, Environmental and Occupational Health: 13 fractional works · 0.4% of its workPhysiology: 12 fractional works · 0.4% of its workCardiology and Cardiovascular Medicine: 11 fractional works · 0.4% of its workInfectious Diseases: 10 fractional works · 0.4% of its workOncology: 10 fractional works · 0.3% of its workPharmacology: 9 fractional works · 0.3% of its workComplementary and alternative medicine: 7 fractional works · 0.2% of its workRheumatology: 7 fractional works · 0.2% of its workEndocrinology, Diabetes and Metabolism: 7 fractional works · 0.2% of its workPathology and Forensic Medicine: 7 fractional works · 0.2% of its workSmaller subfields together: 61 fractional works · 2.1% of its workHealth Professions: 40 fractional works · 1.3% of its workGeneral Health Professions: 14 fractional works · 0.5% of its workRadiological and Ultrasound Technology: 9 fractional works · 0.3% of its workSmaller subfields together: 16 fractional works · 0.6% of its workDentistry: 12 fractional works · 0.4% of its workNursing: 9 fractional works · 0.3% of its workNutrition and Dietetics: 8 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.0% of its workVeterinary: 2 fractional works · 0.1% of its workALL ITS WORKSofia University"St. Kliment…2,953fractional works, 2022-now
Life Sciences14%Physical Sciences50%Health Sciences10%Social Sciences26%

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 26 fields, with their numbers
    1. Environmental Science30510.3%
    2. Computer Science2398.1%
    3. Engineering2207.4%
    4. Earth and Planetary Sciences1806.1%
    5. Physics and Astronomy1745.9%
    6. Materials Science1344.5%
    7. Mathematics983.3%
    8. Chemistry883.0%
    9. Energy220.7%
    10. Chemical Engineering100.3%
    1. Social Sciences39613.4%
    2. Arts and Humanities1424.8%
    3. Economics, Econometrics and Finance742.5%
    4. Psychology712.4%
    5. Business, Management and Accounting652.2%
    6. Decision Sciences331.1%
    1. Agricultural and Biological Sciences2287.7%
    2. Biochemistry, Genetics and Molecular Biology1384.7%
    3. Neuroscience220.8%
    4. Immunology and Microbiology220.7%
    5. Pharmacology, Toxicology and Pharmaceutics120.4%
    1. Medicine2187.4%
    2. Health Professions401.3%
    3. Dentistry120.4%
    4. Nursing90.3%
    5. Veterinary20.1%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Sofia University "St. Kliment Ohridski" specialise in?

Where its research is concentrated relative to its size: Paleontology takes 16.6× the share of its output that it takes of world research.

  1. PaleontologySubfield · 59.0 works17×
  2. Ecology, Evolution, Behavior and SystematicsSubfield · 95.2 works6.9×
  3. OceanographySubfield · 49.0 works5.9×
← 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: 1.62× its world share, 228 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.88× its world share, 138 worksBiochemistry, Geneti…Immunology and Microbiology: 0.72× its world share, 22 worksImmunology and Micro…Neuroscience: 0.46× its world share, 22 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 1.14× its world share, 12 worksPharmacology, Toxico…Chemical Engineering: 0.97× its world share, 10 worksChemical EngineeringChemistry: 1.90× its world share, 88 worksChemistryComputer Science: 1.04× its world share, 239 worksComputer ScienceEarth and Planetary Sciences: 3.88× its world share, 180 worksEarth and Planetary …Energy: 0.81× its world share, 22 worksEnergyEngineering: 0.50× its world share, 220 worksEngineeringEnvironmental Science: 2.08× its world share, 305 worksEnvironmental ScienceMaterials Science: 1.30× its world share, 134 worksMaterials ScienceMathematics: 2.81× its world share, 98 worksMathematicsPhysics and Astronomy: 2.65× its world share, 174 worksPhysics and AstronomyDentistry: 0.84× its world share, 12 worksDentistryHealth Professions: 0.51× its world share, 40 worksHealth ProfessionsMedicine: 0.38× its world share, 218 worksMedicineNursing: 0.64× its world share, 9 worksNursingVeterinary: 0.58× its world share, 2 worksVeterinaryArts and Humanities: 1.67× its world share, 142 worksArts and HumanitiesBusiness, Management and Accounting: 0.68× its world share, 65 worksBusiness, Management…Decision Sciences: 1.14× its world share, 33 worksDecision SciencesEconomics, Econometrics and Finance: 1.17× its world share, 74 worksEconomics, Econometr…Psychology: 0.79× its world share, 71 worksPsychologySocial Sciences: 1.06× its world share, 396 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 3.9×. Every wedge is a field page.

All 26 fields, with their numbers
  1. Earth and Planetary Sciences3.88×180 works
  2. Mathematics2.81×98 works
  3. Physics and Astronomy2.65×174 works
  4. Environmental Science2.08×305 works
  5. Chemistry1.90×88 works
  6. Arts and Humanities1.67×142 works
  7. Agricultural and Biological Sciences1.62×228 works
  8. Materials Science1.30×134 works
  9. Economics, Econometrics and Finance1.17×74 works
  10. Pharmacology, Toxicology and Pharmaceutics1.14×12 works
  11. Decision Sciences1.14×33 works
  12. Social Sciences1.06×396 works
  13. Computer Science1.04×239 works
  14. Chemical Engineering0.97×10 works
  15. Biochemistry, Genetics and Molecular Biology0.88×138 works
  16. Dentistry0.84×12 works
  17. Energy0.81×22 works
  18. Psychology0.79×71 works
  19. Immunology and Microbiology0.72×22 works
  20. Business, Management and Accounting0.68×65 works
  21. Nursing0.64×9 works
  22. Veterinary0.58×2 works
  23. Health Professions0.51×40 works
  24. Engineering0.50×220 works
  25. Neuroscience0.46×22 works
  26. Medicine0.38×218 works

Who are the top researchers at Sofia University "St. Kliment Ohridski"?

Ranked on the quality score, A. Cimmino, A. Cabrera and L. Litov lead among researchers whose main affiliation is Sofia University "St. Kliment Ohridski".

  1. 1 A. Cimmino Bulgaria · #8,111 worldwide 84k citations · 1,049 works
  2. 2 A. Cabrera Bulgaria · #11,365 worldwide 33k citations · 472 works
  3. 3 L. Litov Bulgaria · #17,576 worldwide 113k citations · 2,193 works
  4. 4 S. Stoykova Bulgaria · #20,679 worldwide 47k citations · 461 works
  5. 5 V. Genchev Bulgaria · #32,911 worldwide 54k citations · 539 works
  6. 6 D. Lomidze Bulgaria · #68,921 worldwide 36k citations · 354 works
  7. 7 Nikolai D. Denkov Bulgaria · #138,756 worldwide 16k citations · 215 works
  8. 8 M. Mateev Bulgaria · #139,973 worldwide 17k citations · 175 works
  9. 9 N. Cavallo Bulgaria · #150,116 worldwide 6.6k citations · 149 works
  10. 10 Stoytcho S. Yazadjiev Bulgaria · #203,530 worldwide 7k citations · 264 works
All ranked researchers at Sofia University "St. Kliment Ohridski"

What are the most cited papers from Sofia University "St. Kliment Ohridski"?

The most cited paper from Sofia University "St. Kliment Ohridski" is "The CMS experiment at the CERN LHC" (S. Chatrchyan et al., 2008), with 5,508 citations. Next come "Mapping genomic loci implicates genes and synaptic biology in schizophrenia" (2,894) and "The IPBES Conceptual Framework — connecting nature and people" (2,619).

Most cited papers
#PaperReleasedCitations
1 The CMS experiment at the CERN LHC S. Chatrchyan et al. · Journal of Instrumentation Open access2,047 authors 14 Aug 2008 5,508
2 Mapping genomic loci implicates genes and synaptic biology in schizophrenia Vassily Vladimirovich Trubetskoy et al. · Nature Open access613 authors 8 Apr 2022 2,894
3 The IPBES Conceptual Framework — connecting nature and people Sandra M. Díaz et al. · Current Opinion in Environmental Sustainability ReviewOpen access 19 Dec 2014 2,619
4 Cancer Incidence, Mortality, Years of Life Lost, Years Lived With Disability, and Disability-Adjusted Life Years for 29 Cancer Groups From 2010 to 2019 Jonathan Kocarnik et al. · JAMA Oncology Open access601 authors 30 Dec 2021 2,100
5 Recovery of large carnivores in Europe’s modern human-dominated landscapes Guillaume Chapron et al. · Science Open access 19 Dec 2014 1,906
All 60 most cited papers, with filters and sorting

Which keywords describe research at Sofia University "St. Kliment Ohridski"?

By fractional works in 2022-now, weighted toward what it does more of than the world: Invasive Species, Biodiversity, Climate Change, Biogeography, Evolution, Ecosystem Functioning, Taxonomy and Phylogeny.

▲ 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 Change184▲ 2.3×89 topics
  2. Biodiversity137▲ 6.1×26 topics
  3. Invasive Species133▲ 11×21 topics
  4. Biogeography96▲ 12×19 topics
  5. Machine Learning90◆ 0.91×72 topics
  6. Evolution83▲ 11×15 topics
  7. Ecosystem Functioning77▲ 13×7 topics
  8. Globalization72▲ 1.24×71 topics
  9. Taxonomy72▲ 17×13 topics
  10. Phylogeny70▲ 14×16 topics
  11. Ecology64▲ 13×9 topics
  12. Environmental Impacts47▲ 5.9×8 topics
  13. Self-Assembly46▲ 4.9×11 topics
  14. Conservation46▲ 3.7×19 topics
  15. DNA Barcoding46▲ 9.0×9 topics
  16. Morphology45▲ 8.6×10 topics
  17. Biological Invasions45▲ 17×3 topics
  18. Adaptation43▲ 4.9×11 topics
  19. Phylogenetic Analysis42▲ 4.5×14 topics
  20. Groundwater40▲ 14×5 topics
  21. Biodiversity Loss40▲ 24×3 topics
  22. Ecosystem Engineering39▲ 45×2 topics
  23. Mediterranean39▲ 15×5 topics
  24. Genetic Analysis38▲ 25×3 topics
  25. Marine Invasions38▲ 80×1 topic
  26. Mediterranean Sea38▲ 80×1 topic
  27. Toxins38▲ 12×5 topics
  28. Cavefish37▲ 64×1 topic
  29. Subterranean37▲ 64×1 topic
  30. Conservation Genetics37▲ 31×2 topics
  31. Aquatic Invasions36▲ 59×1 topic
  32. Freshwater Mussels36▲ 59×1 topic
  33. Holocene34▲ 10×3 topics
  34. Sea Level32▲ 11×2 topics
  35. Coleoptera30▲ 39×2 topics
  36. Speciation28▲ 21×3 topics
  37. Eutrophication27▲ 8.2×4 topics
  38. Black Sea26▲ 24×2 topics
  39. Harmful Algal Blooms26▲ 11×2 topics
  40. Sedimentation25▲ 15×2 topics

Which research topics does Sofia University "St. Kliment Ohridski" publish most on?

By volume in 2022-now: Marine Ecology and Invasive Species, Subterranean biodiversity and taxonomy, Aquatic Invertebrate Ecology and Behavior and Marine and environmental studies.

Marine Ecology and Invasive Species: 38 fractional worksSubterranean biodiversity and taxonomy: 37 fractional worksAquatic Invertebrate Eco…36Aquatic Invertebrate Ecology and Behavior: 36 fractional worksMarine and environmental…25Marine and environmental studies: 25 fractional worksColeoptera Taxonomy and Distribution: 24 fractional worksAquatic Ecosystems and Phytoplankton Dynamics: 23 fractional worksDiatoms and Algae Research18Diatoms and Algae Research: 18 fractional worksMarine Biology and Ecology Research: 14 fractional worksFreshwater macroinvertebrate diversity and ecology: 13 fractional worksByzantine Studies and History: 13 fractional works
Global and Planetary ChangePaleontologyEcologyOceanography4 others

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

  1. 1 Marine Ecology and Invasive Species Global and Planetary Change 38 works
  2. 2 Subterranean biodiversity and taxonomy Paleontology 37 works
  3. 3 Aquatic Invertebrate Ecology and Behavior Ecology 36 works
  4. 4 Marine and environmental studies Oceanography 25 works
  5. 5 Coleoptera Taxonomy and Distribution Ecology, Evolution, Behavior and Systematics 24 works
  6. 6 Aquatic Ecosystems and Phytoplankton Dynamics Environmental Chemistry 23 works
  7. 7 Diatoms and Algae Research Biomaterials 18 works
  8. 8 Marine Biology and Ecology Research Oceanography 14 works
  9. 9 Freshwater macroinvertebrate diversity and ecology Ecology 13 works
  10. 10 Byzantine Studies and History Classics 13 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 available38.5%not open61.5%

World: 40% of research is openly available.

with international co-authors21.5%domestic only78.5%

World: 18% is written across borders.

How has Sofia University "St. Kliment Ohridski"'s research output changed?

Output in 2022-2025 was 26% 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 Sofia University "St. Kliment Ohridski" as a percentage of every work published that year, 0.011% in 2024.

still counting0.010%0.020%0.030%Sofia University "St. Kliment Ohridski"0.011% in 202519801990200020102020

Fractional works of Sofia University "St. Kliment Ohridski" over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025Sofia University "St. Kliment Ohridski"6.2% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 7.7% in 2006.

Other research institutions in Sofia

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Sofia University "St. Kliment Ohridski" on Science Explorer

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