Results

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Property Organism Value Units ID Details
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...
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...
Number of species going extinct per day in the sixth (anthropocene) extinction Biosphere ≤150 species/day 117271 Kaebnick GE, Jennings...
Number of described species Invertebrates ~1.4 million species 117270 Régnier C et al., Mass...
Fraction of of the 1.9 million known recent species that are recorded as extinct Biosphere 0.04 ((799 species)) % 117269 Régnier C et al., Mass...
Fraction of number of individual animals that once shared the Earth with humans that are extinct Biosphere ≤50 % of individual animals 117268 Ceballos G, Ehrlich PR...
Fraction of insect species per taxonomic order that have contracting ranges in the UK Biosphere 30 - 60 % of species per taxonomic order 117267 Ceballos G, Ehrlich PR...
Percentage of decreasing species classified by IUCN (International Union for Conservation of Nature) as "endangered" or "low concern" in terrestrial vertebrates Vertebrates Table - link % 117266 Ceballos G, Ehrlich PR...
Decrease in wildlife on Earth between 1970 and 2012 Biosphere ≤58 % 117265 Ceballos G, Ehrlich PR...
Fraction of 3,623 terrestrial invertebrate species and of 1,306 marine invertebrate species that are classified as threatened with extinction Invertebrates terrestrial species 42%: marine species 25% % 117264 Ceballos G, Ehrlich PR...
Fraction of land vertebrates including reptiles, birds, and amphibians that are experiencing a decline and losses in local population Biosphere ~30 % 117263 The Lancet Planetary...
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....
Plant species richness and fire-response traits in the five Mediterranean-type climate regions of the world Biosphere Table - link N/A 117261 Rundel PW et al., Fire...
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 of all species that are at high risk of extinction as of 2004 Amphibians ~40 % of all species 117259 Wake DB, Koo MS. Amphibians....
The amphibian tree of life Amphibians Table - link number of species for major clades 117258 Wake DB, Koo MS. Amphibians....
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...
Loss of evolutionary history across mammalian orders (Expected contribution to phylogenetic diversity (PD)) Biosphere Table - link N/A 117256 Davis M, Faurby S, Svenning...
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...
Lifetime prevalence of cluster headache Human Homo sapiens 0.12 % 117254 Nesbitt AD, Goadsby PJ....