Results

Click a row for more details

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...