← All metrics

Standards & vocabularies

NCBI Taxonomy named species

NCBI / Taxonomy

2.5M
species · 2026-10-19
Gompertz
best-fit model
2.9M
projected 2027
2.3M2.5M2.7M2.9M202620272.9M 2027
Gompertz (S-curve) fitbest fit (AICc)N(t) = L·e^{−e^{−k(t − t₀)}}
carrying capacity L 4.5Msteepness k 0.414 / yrinflection t₀ 2025R² 0.9448forecast 2.9M by 2027

Forecast = 10% of the 0-yr record (0.8 yr ahead). Anchored on the latest value; levels off toward L ≈ 4.5M.

How this is tracked
SourceNCBI / Taxonomy
Update cadenceweekly
Live endpointhttps://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=taxonomy&term=species%5Brank%5D&retmode=json&retmax=0&tool=seqdesk-tracker&email=chrmnch@icloud.com
Parsejson · esearchresult.count
All data points (16)
Datespecies
2026-10-192,494,184
2026-10-122,493,818
2026-10-052,490,520
2026-09-282,489,565
2026-09-212,487,756
2026-09-142,486,891
2026-09-072,471,803
2026-08-242,435,511
2026-08-172,423,282
2026-08-102,402,034
2026-08-032,391,483
2026-07-272,367,596
2026-07-202,342,699
2026-07-132,332,354
2026-07-062,329,845
2026-06-242,327,771

Machine-readable: /api/research-data?metric=ncbi-taxonomy-species · back to all metrics

Report errorpmu15@helmholtz-hzi.de
NCBI Taxonomy named species: 2.5M species — SeqDesk research-data tracker