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. 1998 Jun 9;95(12):6578–6583. doi: 10.1073/pnas.95.12.6578

Table 6.

Relationship of plant and prokaryotic biomass to primary productivity

Ecosystem Net primary productivity,* Pg of C/yr Total carbon content, Pg of C
Plant* Soil and aquatic prokaryotes Subsurface prokaryotes
Terrestrial 48 560 26 22–215
Marine 51 1.8 2.2 303
*

From ref. 73.