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Property Organism Value Units ID Details
Milankovitch cycles (orbital periods of the earth) Biosphere Table - link years 116127 Duursma EK, Boisson MPRM...
Total biomass on Earth Biosphere ≈550 gigatons of carbon (Gt C) 115269 Bar-On YM, Phillips R...
Surface area of earth covered by water Biosphere 3.62e+8 km^2 100542 http://hypertextbook...
Nitrogen flow on Earth Biosphere Table - link N/A 103506 John Harte, Consider...
Sulfur flow on Earth Biosphere Table - link N/A 103509 John Harte, Consider...
Carbon flow on Earth Biosphere Table - link N/A 103492 John Harte, Consider...
Phosphorus flow on Earth Biosphere Table - link N/A 103508 John Harte, Consider...
Total marine biomass on Earth Biosphere ≈6 gigatons of carbon (Gt C) 115273 Bar-On YM, Phillips R...
Surface area of the Earth Biosphere 5.1e+8 km^2 116120 Duursma EK, Boisson MPRM...
Number of microbial species on Earth Biosphere 10^11 - 10^12 species 113932 Locey KJ, Lennon JT....
Biological nitrogen fixation on Earth Biosphere 2e+14 Kg (N)/Year 103507 John Harte, Consider...
Total organic carbon on Earth Biosphere ~2,000 Gt C 111600 Landenmark HK, Forgan DH...
Environmental parameters on Mars and Earth surfaces Biosphere Table - link N/A 114113 Verseux et al., Sustainable...
livestock (cows, pigs, poultry etc) biomass on earth per person Biosphere ~100 kg/person 111482 V. Smil, Should we eat meat?...
Maximum biological time scale: age of earth Biosphere 4e+9 years 103768 "Physical Biology of...
Total solar electromagnetic energy reaching the earth Biosphere 160 W/m^2 104558 Jorg Overmann and Ferran...
Total animal biomass on Earth (mainly marine) Biosphere ≈2 gigatons of carbon (Gt C) 115271 Bar-On YM, Phillips R...
Surface area of earth covered by land Biosphere 1.48e+8 km^2 100541 http://hypertextbook...
Average heat flow through the earth crust Biosphere 0.059 W/m^2 100747 Sustainable Energy -...
Number of bird specimens on Earth Biosphere 200 - 400 billion (10^9) birds 116940 Kevin J. Gaston & Tim...