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Property Organism Value Units ID Details
Number of described and undescribed animal species Biosphere described ~1,900,000: undescribed 11,000,000 species 113443 Pimm SL et al., The ...
Number of species going extinct per day in the sixth (anthropocene) extinction Biosphere ≤150 species/day 117271 Kaebnick GE, Jennings...
Fraction by which species richness is lower in agricultural land compared to minimally disturbed primary vegetation Plants ~30 % 113396 Vellend M et al., Plant...
Estimated number of species Insect 5,000,000 - 6,000,000 species 113444 Pimm SL et al., The ...
Number of cells of bacteria and archaea estimated to inhabit Earth Biosphere ~10^30 cells 113931 Locey KJ, Lennon JT....
Number of microbial species on Earth Biosphere 10^11 - 10^12 species 113932 Locey KJ, Lennon JT....
Total number of species Biosphere ~9 - 52 million species 117274 Khan S et al., Overview...
Diversification rate Eukaryotes plants 0.06: birds 0.15: various chordates 0.2: arthropods 0.17: mammals 0.07 new species/species/million years 113447 Pimm SL et al., The ...
Current (sixth, or anthropocene) extinction rates compared to natural background rates of extinction Biosphere current 1,000: future likely to be 10,000 times higher than background extinction rate 117272 Khan S et al., Overview...
Fraction of the ≈300,000 described flowering plant species that are threatened Plants 16 % 116939 Pimm S, Raven P, Peterson A...
Estimated number of species of land plants Biosphere >450,000 species 113442 Pimm SL et al., The ...
Extinction rates calculated by cohort analysis and fractions of species that are critically endangered (CR) vertebrates Table - link N/A 113448 Pimm SL et al., The ...
Loss of evolutionary history across mammalian orders (Expected contribution to phylogenetic diversity (PD)) Biosphere Table - link N/A 117256 Davis M, Faurby S, Svenning...
Estimated number of marine species Biosphere primary source [9] 2.2±0.18: primary source [12] 0.7 - 1.0 million species 113445 Pimm SL et al., The ...
Estimated rates of plant extinction and speciation in the distant past (background), the recent past (Anthropocene), and the future (projected) Plants Table - link S/MSY (species per million species per year) 113398 Vellend M et al., Plant...
Number of described species of beetles (Coleoptera, the most species-rich group of organisms on Earth) Insect ~360,000 described species 113121 Bouchard P et al., F...
Number of mammals that have gone extinct during the sixth mass extinction that started in the Late Pleistocene Biosphere >300 mammal species 117255 Davis M, Faurby S, Svenning...
Number of plant species Plants ~350,000 (representing an estimated 80–90% of the global total) species 113395 Vellend M et al., Plant...
Extinction rate Birds 132 extinction/million species/year (E/MSY) 113446 Pimm SL et al., The ...
Rate of species extinction in sixth (anthropocene) mass extinction compared to the “normal rate” throughout geological time Biosphere 100 times greater than “normal rate” 117262 Ceballos G, Ehrlich PR....