<Tr> <Td> Open ocean </Td> <Td> </Td> <Td> 1.7 to 10 </Td> </Tr> <Tr> <Td> Terrestrial soil </Td> <Td> 2.6 </Td> <Td> 3.7 to 22 </Td> </Tr> <Tr> <Td> Subsurface terrestrial </Td> <Td> 2.5 to 25 </Td> <Td> 3.5 to 215 </Td> </Tr> <P> Estimates for the global biomass of species and higher level groups are not always consistent across the literature . Apart from bacteria, the total global biomass has been estimated at about 560 billion tonnes C. Most of this biomass is found on land, with only 5 to 10 billion tonnes C found in the oceans . On land, there is about 1,000 times more plant biomass (phytomass) than animal biomass (zoomass). About 18% of this plant biomass is eaten by the land animals . However, in the ocean, the animal biomass is nearly 30 times larger than the plant biomass . Most ocean plant biomass is eaten by the ocean animals . </P>

The total of living biological organisms in a given area or ecosystem at a given time