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National Museum of Natural History

In research, National Museum of Natural History stands highest in Physical Sciences (#19,180 of 21,541 worldwide) and Life Sciences (#13,142 of 14,347 worldwide), over all time. Relative to its size it is most specialised in Ecology, Evolution, Behavior and Systematics — Ecology, Evolution, Behavior and Systematics is 43.0× its share of world research.

nmnhs.comROR OpenAlex
World rank, 2022–2025
#19,628
of 28,054 · #28,609 all time
Rank in Bulgaria
#54
of 92
Research works
341
▲ 61% vs 2013–17
Citations
2.3k
6.8 per fractional work
Top-10% rate
11.3%
record average 16.5%
Open access
68%
world 28%

What is National Museum of Natural History 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 #19,180 of 21,541 12.7%146
Life SciencesDomain #13,142 of 14,347 11.4%146

Each strip is that field’s whole ranked pool, with the notch where National Museum of Natural History 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 world mark, because the world rate differs by field (from about 6% to 21% in this record).

What does National Museum of Natural History specialise in?

Where its research is concentrated relative to its size: Ecology, Evolution, Behavior and Systematics takes 43.0× the share of its output that it takes of world research.

  1. Ecology, Evolution, Behavior and SystematicsSubfield · 23.5 works43×
← 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: 6.46× its world share, 36 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.71× its world share, 11 worksBiochemistry, Geneti…Immunology and Microbiology: 0.64× its world share, 1 worksImmunology and Micro…Neuroscience: 0.04× its world share, 0 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.20× its world share, 0 worksPharmacology, Toxico…Chemistry: 0.06× its world share, 0 worksChemistryComputer Science: 0.12× its world share, 1 worksComputer ScienceEarth and Planetary Sciences: 9.19× its world share, 17 worksEarth and Planetary …Engineering: 0.06× its world share, 1 worksEngineeringEnvironmental Science: 4.31× its world share, 25 worksEnvironmental ScienceMaterials Science: 0.53× its world share, 2 worksMaterials ScienceMathematics: 0.27× its world share, 0 worksMathematicsPhysics and Astronomy: 0.14× its world share, 0 worksPhysics and AstronomyHealth Professions: 0.13× its world share, 0 worksHealth ProfessionsMedicine: 0.04× its world share, 1 worksMedicineArts and Humanities: 2.94× its world share, 10 worksArts and HumanitiesBusiness, Management and Accounting: 0.01× its world share, 0 worksBusiness, Management…Decision Sciences: 0.12× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.13× its world share, 0 worksEconomics, Econometr…Psychology: 0.25× its world share, 1 worksPsychologySocial Sciences: 0.66× its world share, 10 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 9.2×. Every wedge is a field page.

Who are the top researchers at National Museum of Natural History?

Ranked on the composite score, Nikolaï Spassov, Borislav Guéorguiev and Petâr Beron lead among researchers whose main affiliation is National Museum of Natural History.

  1. 1 Nikolaï Spassov Bulgaria · #668,348 worldwide 87 citations · 33 works
  2. 2 Borislav Guéorguiev Bulgaria · #883,776 worldwide 9 citations · 15 works
  3. 3 Petâr Beron Bulgaria · #1,033,192 worldwide 9 citations · 15 works
  4. 4 Nikolay Tzankov Bulgaria · #1,631,292 worldwide 10 citations · 16 works
All ranked researchers at National Museum of Natural History

Which keywords describe research at National Museum of Natural History?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Climate Change, Biodiversity, Invasive Species, Phylogeny, Biogeography, Taxonomy, Evolution and DNA Barcoding.

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

Size is fractional works in 2022–2025 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 Change23▲ 7.3×31 topics
  2. Biodiversity21▲ 24×19 topics
  3. Invasive Species18▲ 37×20 topics
  4. Phylogeny18▲ 100×16 topics
  5. Biogeography17▲ 55×19 topics
  6. Taxonomy15▲ 98×13 topics
  7. Evolution15▲ 50×12 topics
  8. DNA Barcoding13▲ 68×9 topics
  9. Population Dynamics10▲ 32×11 topics
  10. Molecular Phylogeny9▲ 51×11 topics
  11. Conservation9▲ 18×14 topics
  12. Ecology8▲ 44×7 topics
  13. Morphology8▲ 37×7 topics
  14. Conservation Biology7▲ 56×3 topics
  15. Mediterranean6▲ 56×3 topics
  16. Biological Control6▲ 33×8 topics
  17. Habitat Fragmentation5▲ 21×5 topics
  18. Holocene5▲ 38×2 topics
  19. Sea Level5▲ 45×2 topics
  20. Phylogenetic Analysis5▲ 14×12 topics
  21. Biodiversity Conservation5▲ 11×4 topics
  22. Coleoptera4▲ 194×2 topics
  23. Cryptic Species4▲ 163×2 topics
  24. Black Sea4▲ 93×1 topic
  25. Speciation4▲ 94×2 topics
  26. paleoceanography4▲ 123×1 topic
  27. Diversification4▲ 87×2 topics
  28. Groundwater4▲ 40×2 topics
  29. Water Resources4▲ 14×2 topics
  30. Adaptation4▲ 11×4 topics
  31. Bronze Age4▲ 75×2 topics
  32. Ecological Niche4▲ 53×1 topic
  33. Global Food Security4▲ 75×1 topic
  34. Species Distribution Modeling4▲ 53×1 topic
  35. Warfare Ecology4▲ 229×1 topic
  36. Cavefish4▲ 266×1 topic
  37. Habitat Selection4▲ 40×2 topics
  38. Species Delimitation4▲ 68×3 topics
  39. Subterranean4▲ 266×1 topic
  40. Lepidoptera3▲ 153×1 topic

Which research topics does National Museum of Natural History publish most on?

By volume in 2022–2025: Marine and environmental studies, Environmental and Biological Research in Conflict Zones, Species Distribution and Climate Change and Subterranean biodiversity and taxonomy.

Marine and environmental…4Marine and environmental studies: 4 fractional worksEnvironmental and Biolog…4Environmental and Biological Research in Conflict Zones: 4 fractional worksSpecies Distribution and Climate Change: 4 fractional worksSubterranean biodiversit…4Subterranean biodiversity and taxonomy: 4 fractional worksLepidoptera: Biology and…3Lepidoptera: Biology and Taxonomy: 3 fractional worksColeoptera Taxonomy and Distribution: 3 fractional worksAncient and Medieval Archaeology Studies: 2 fractional worksAnimal Ecology and Behav…2Animal Ecology and Behavior Studies: 2 fractional worksBotany and Plant Ecology Studies: 2 fractional worksBryophyte Studies and Records: 2 fractional works
OceanographyManagement, Monitoring, Policy and LawEcological ModelingPaleontology5 others

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

  1. 1 Marine and environmental studies Oceanography 4 works
  2. 2 Environmental and Biological Research in Conflict Zones Management, Monitoring, Policy and Law 4 works
  3. 3 Species Distribution and Climate Change Ecological Modeling 4 works
  4. 4 Subterranean biodiversity and taxonomy Paleontology 4 works
  5. 5 Lepidoptera: Biology and Taxonomy Genetics 3 works
  6. 6 Coleoptera Taxonomy and Distribution Ecology, Evolution, Behavior and Systematics 3 works
  7. 7 Ancient and Medieval Archaeology Studies Archeology 2 works
  8. 8 Animal Ecology and Behavior Studies Ecology 2 works
  9. 9 Botany and Plant Ecology Studies Plant Science 2 works
  10. 10 Bryophyte Studies and Records Ecology, Evolution, Behavior and Systematics 2 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 available67.8%not open32.2%

World: 28% of research is openly available.

with international co-authors43.9%domestic only56.1%

World: 19% is written across borders.

How has National Museum of Natural History's research output changed?

Output in 2018–2022 was 61% higher than in 2013–2017.

1990200020102020
grewheldshrank

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

Other research institutions in Sofia

All research institutions in Sofia

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.