Biosphere, Planetary

New Gaia Surface
Image from Anders Sandberg
Biology on the surface of New Gaia

The organic component of a Garden World; includes all living organisms (whether natural or bionanites or both) and all organic matter that has not yet decomposed.

Biospheres occasionally develop naturally, but much more often result from the hand of terragen mindkind. In either process, the chemical reactions of life (e.g., photosynthesis-respiration, carbonate precipitation, etc.) impart a strong signal on the chemical composition of the atmosphere, transforming it from reducing conditions (e.g. EoGaian) and oxidizing environment with free oxygen. The biosphere is structured into a hierarchy known as the food chain whereby all life is dependent upon the autotrophs of the first tier. The biosphere can be divided into distinct ecosystems that represent the interactions between a group of organisms forming a trophic pyramid and the environment and the natural or artificial habitat in which they live.
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Development Notes
Text by M. Alan Kazlev
Initially published on 08 October 2001.