The Human Impacts Database

A collection of useful numbers for quantifying the impacts of the human presence on Earth.


Quantity Value HuID Source Type
Production yield of beef ≈ 220 kg / cow 33961 FAO (Food and Agricultural Organization …
Feed-to-edible protein conversion efficiency of common carp ≈ 15 % 34542 Fry, J.P., Mailloux, N.A., Love, …
Standing population of sheep ≈ 1.4 × 109 sheep 34864 FAO (Food and Agricultural Organization) …
CO2 equivalent emissions from farmed salmon production ≈ 4700 - 5500 kg CO2e / t 36679 Gephart, J.A., et al.
Mass of nitrogen needed for rice production ≈ 1 × 10-2 kg Nr / Mcal 36950 Eshel, G., Shepon, A., Makov, …
Land area requirement for potato production ≈ 0.4 m2 / yr / Mcal 37568 Eshel, G., Shepon, A., Makov, …
Annual captured Humboldt squid mass ≈ 8.9 × 108 kg / yr 38638 FAO (Food and Agriculture Organization …
CO2 equivalent emissions from farmed shrimp production ≈ 9000 - 9800 kg CO2e / t 38655 Gephart, J.A., et al.
Total number of chickens slaughtered for poultry since 1960 ≈ 1.8 × 1012 chickens 38712 FAO (Food and Agricultural Organization) …
Irrigated water requirement for dairy production (1.7 ± 0.5) × 10-1 m3 / Mcal 39217 Eshel, G., Shepon, A., Makov, …
Mass of nitrogen needed for beef production (0.175 ± 0.025) kg Nr / Mcal 39532 Eshel, G., Shepon, A., Makov, …
Feed-to-edible protein conversion efficiency of pork ≈ 15 % 39603 Fry, J.P., Mailloux, N.A., Love, …
Land area requirement for egg production 3 ± 1 m2 / yr / Mcal 39661 Eshel, G., Shepon, A., Makov, …
Land area requirement for beef production ≈ 145 ± 15 m2 / yr / Mcal 40176 Eshel, G., Shepon, A., Makov, …
CO2 equivalent emissions from farmed seaweed production ≈ 750 - 1500 kg CO2e / t 40361 Gephart, J.A., et al.