Results
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Property | Organism | Value | Units | ID | Details |
---|---|---|---|---|---|
Average doubling time of bacteria in the mammalian gut | bacteria | 2.7 - 2.9 | hours | 117322 | Rosenberg E. and Zil... |
Characteristic heat production rate of fermenting rumen bacteria | Ruminants | 160 - 180 | watts/kg bacterial mass | 117321 | Rosenberg E. and Zil... |
Mass of an individual bacterium | bacteria | 600×10^−18 – 700×10^−18 | Kg | 117320 | Christina L Lewis, Caelli... |
Rumen volume | Cow Bos Taurus | 150 - 200 | Liters | 117319 | MilkProduction.com. Digestive... |
Number of species of bacteria in the foregut of ruminant animals | Ruminants | >200 | species | 117318 | Matthews et al., The... |
Concentration of bacteria in the foregut of ruminant animals | Ruminants | 10^10 - 10^11 | cells/ml | 117317 | Matthews et al., The... |
Concentration of ciliate protozoa in rumen fluid | Ruminants | 10^4 - 10^6 | cells/ml | 117316 | Matthews et al., The... |
Domestication date | Chicken Gallus gallus | ~8,000 | years ago | 117285 | Bennett CE et al., The... |
Population size (most numerous undomesticated bird on earth) | Red-billed quelea Quelea quelea | ~1.5 | billion individuals | 117284 | Bennett CE et al., The... |
Net change in abundance across North American bird families, 1970-2017 | Biosphere | Table - link | N/A | 117283 | Rosenberg KV et al.,... |
Net change in abundance across the North American avifauna, 1970-2017 | Biosphere | Table - link | N/A | 117282 | Rosenberg KV et al.,... |
Net population change in North American birds | Biosphere | Table - link | % change since 1970 | 117281 | Rosenberg KV et al.,... |
Gains and losses across the North American avifauna over the last half century | Biosphere | Table - link | N/A | 117280 | Rosenberg KV et al.,... |
Decrease in bird population size in North America since 1970 | Biosphere | 29 | % | 117279 | Rosenberg KV et al.,... |
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... |
Number of times obligate interspecific brood parasitism arose independently during evolution | Birds | 7 | times | 117277 | Stevens M. Bird brood... |
Number of species in which intraspecific (same-species) brood parasitism has been reported | Birds | ~200 | bird species | 117276 | Stevens M. Bird brood... |
Fraction of all species that are obligate brood parasites | Birds | ~1 | % of all bird species | 117275 | Stevens M. Bird brood... |
Total number of species | Biosphere | ~9 - 52 | million species | 117274 | Khan S et al., Overview... |
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... |