Biomass (ecology)

For the eco-industrial use of the term, which includes dead material used for biofuels, see biomass In ecology, biomass refers to the cumulation of life that is possibly living matter. That is, it is the total living biologica (usually measured per square metre or square kilometre). This means that only 30% of the weight of any creature is counted, the rest being water.The most successful animal, in terms of biomass, is the Antarctic krill, Euphausia superba, with a biomass of probably over 500 million tons, roughly twice the total biomass of humans. The entire earth contains about 75 billion tons of biomass, or 0.00000000126% of the total mass of the Earth. Humans comprise about 250 million tons (0.33%) of the Earth's biomass, domesticated animals about 700 million (1.0%), and crops about 2 billion tons or 2.7% of the Earth's biomass. The total biomass of bacteria is estimated to equal that of plants .
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