Table 1.

The main experimental BLSS that use plants and microalgae and that recycle products in a closed loop.

System	Country	Period	Microorganism	References
BIOS	Russia	1960	Chlorella	Gitelson et al., 1989
CEBASa	Germany	1985	Chlamydomonas	Blüm, 1992; Blüm et al., 2003
MELiSSAb	Bel, Fra, Spa, Can	1988	Arthrospira	Mergeay et al., 1988; Hendrickx et al., 2006; Lasseur et al., 2011
CERASa	Japan	1997	Euglena, Chlorella, Arthrospira	Takeuchi, 1997; Omori et al., 2001; Takeuchi and Endo, 2004
CAESa	China	2004	Chlorella	Wang et al., 2007

^acontains also an aquatic animal habitat.

^bhttp://ecls.esa.int/ecls/