Results

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Property Organism Value Units ID Details
Number of microbial species on Earth Biosphere 10^11 - 10^12 species 113932 Locey KJ, Lennon JT....
Fraction of known animal species that are beetles Biosphere nearly 25 % of all described species 113119 Hunt T et al., A com...
Number of cells of bacteria and archaea estimated to inhabit Earth Biosphere ~10^30 cells 113931 Locey KJ, Lennon JT....
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 species going extinct per day in the sixth (anthropocene) extinction Biosphere ≤150 species/day 117271 Kaebnick GE, Jennings...
Fraction of the four billion species estimated to have evolved on the Earth over the last 3.5 billion years that are extinct Biosphere ~99 % 112752 Barnosky AD et al., Has...
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....
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...
Total number of species Biosphere ~9 - 52 million species 117274 Khan S et al., Overview...
Fraction of world vascular plant flora that Mediterranean-type climate (MTC) regions (covering only about 2.2% of world land area) are home to Biosphere 16.7 % of world vascular plant flora 117260 Rundel PW et al., Fire...
Fraction by which species richness is lower in agricultural land compared to minimally disturbed primary vegetation Plants ~30 % 113396 Vellend M et al., Plant...
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 plant species Plants ~350,000 (representing an estimated 80–90% of the global total) species 113395 Vellend M et al., Plant...
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...
Estimated number of species Insect 5,000,000 - 6,000,000 species 113444 Pimm SL et al., The ...
Estimated number of species of land plants Biosphere >450,000 species 113442 Pimm SL et al., The ...
Number of bird species that became extinct in tropical oceania islands in approximately 2000 years, since human colonization Biosphere 1800 bird species 117273 Khan S et al., Overview...
Time it would take the ~5,400 current mammal species to evolve enough new history to restore net phylogenetic diversity (PD) to preanthropogenic levels Biosphere ~500,000 years 117257 Davis M, Faurby S, Svenning...
Fraction of all species that are at high risk of extinction as of 2004 Amphibians ~40 % of all species 117259 Wake DB, Koo MS. Amphibians....
Fraction of earth's upper oceans occupied by coral reefs and fraction of the globe's marine species they provide habitat for Biosphere <0.1% of earth's upper oceans: ~25% of the globe's marine species % 114509 Blackall LL, Wilson B...