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NCBI Taxonomy named species

NCBI / Taxonomy

2.5M
species · 2026-11-09
S-curve
best-fit model
2.5M
projected 2027
2.3M2.4M2.5M2.5M202620272.5M 2027
Logistic (S-curve) fitbest fit (AICc)N(t) = L / (1 + e^{−k(t − t₀)})
carrying capacity L 2.6Msteepness k 4.840 / yrmidpoint t₀ 2026R² 0.9537forecast 2.5M by 2027

Forecast = 10% of the 0-yr record (0.8 yr ahead). Anchored on the latest value; levels off toward L ≈ 2.6M.

Datespecies
2026-11-092,506,310
2026-11-022,497,547
2026-10-262,496,277
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

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