ecological Systems closed (in English: Closed Ecological Systems ) is ecosystems which do not carry out exchanges of matter with outside.
Although the Ground itself corresponds to this definition, this term is more often used to describe more precisely certain artificial ecosystems. A closed ecological system is never a really closed system, since energy (light and heat) can enter and leave the system.
Such systems are scientifically interesting and their development could be useful at the time of the space missions or underwater.
In a closed ecological system, each product rejected by a species must be used by other species. If one aims at the survival of a form of life complexes, such as for example a mouse or an human being, formed products (Carbon dioxide, deposit, Urine…) must possibly be converted into Oxygène, food and Eau.
A closed ecological system must contain at least an organization autotrophic. Although at the same time the Chimiotrophe S and phototrophes are completely possible, the majority of the ecological systems closed to date are based on an organization phototrophe such as a green Algue.
Principal closed ecological systems
- Biosphere II
- MELiSSA
- BIOS-1
- BIOS-2
- BIOS-3
Écosphère
A écosphère is a ball of glass in which is maintained an autonomous closed ecosystem. It is mainly sold like gift or curiosity. It can include microscopic Crevette S, Algue S, gravel S, Coquillage S decorative, or Gorgone S.
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References
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