Results
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| Property | Organism | Value | Units | ID | Details |
|---|---|---|---|---|---|
| Number of species of parasitic worms and protozoa that humans are host to | Human Homo sapiens | parasitic worms ~300: protozoa >70 | species | 117278 | Cox FE. History of human... |
| Total number of species | Biosphere | ~9 - 52 | million species | 117274 | Khan S et al., Overview... |
| Extant taxa | Spider | ~47,000 species: 4,072 genera: 112 families | N/A | 116053 | Mammola S, Michalik P... |
| Fraction of total terrestrial plant species that are C4 species | Biosphere | ~3 | % | 116891 | Arrivault S et al., ... |
| 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 total number of species of organisms | Biosphere | 3e6-5e6 | Species | 103931 | May RM. How Many Species... |
| Number of microbial species on Earth | Biosphere | 10^11 - 10^12 | species | 113932 | Locey KJ, Lennon JT.... |
| Estimated number of species of land plants | Biosphere | >450,000 | species | 113442 | Pimm SL et al., The ... |
| Number of microbial species contained in one gram of soil | Microbes | 2,000 to 50,000 | Species | 107286 | Zhili He, Joy D. Van Nostrand... |
| Fraction of (roughly 16,000) tree species in Amazonia that account for half of all trees | Biosphere | 1.4 (equivalent to 227 species) | % of species | 112911 | ter Steege H et al. ... |
| Total number of trees, median tree density and number of tree species in [the ~6-million-km^2 landscape of] Amazonia | Biosphere | Total number of trees 3.9×10^11: median tree density 565 trees/ha: ~16,000 tree species | N/A | 112912 | ter Steege H et al. ... |
| Population characteristics of the 20 most abundant tree species of the Amazon | Biosphere | Table - link | N/A | 112913 | ter Steege H et al. ... |
| Chitin content of selected crustacean, insects, molluscan organs, and fungi | Various | Table - link | % | 115475 | Tharanathan RN, Kittur... |
| List of non-human animals with publications on their genome projects as of 2012 | Metazoa animals | Table - link | Mb | 112712 | Luting Song & Wen Wang... |