title: Biospheric theory and report on overall Biosphere 2 design and performance.
abstract: This article reviews the structural complexity of Biospheres as well as Vernadsky's two laws of biospherics generalized into laws of thermodynamics. The history of designing and building apparatuses to test biospheric hypothesis are summarized: Drs. Shepelev and Gitelson's experiments in Russia, and Space Biospheres Ventures' 10,974 ft3 Test Module and 3.15-acre Biosphere 2 systems. Critical parameters in building Biosphere 2 are outlined: species lists, state descriptors, ecosystems, key variables, closure, and the necessity of observer-managers. Some results of the 2-year Mission One experiment in Biosphere 2 are summarized: human health, light-CO2 coupling, food production, redundancy in maintenance. Change made to the Biosphere 2 system after the first 2-year mission and before the start-up of the second mission are listed. As well, the future of artificial biospheres is considered.
authors.affiliation: Biospheres LLC, Bonsall, CA 92003, USA. biospheres@compuserve.com
authors.forename: J
authors.initials: J
authors.lastname: Allen
mesh_terms: D000383:Agriculture; D000389:Air Conditioning; D001272:Atmosphere; D002245:Carbon Dioxide; D018504:Ecological Systems, Closed; D004463:Ecology; D017753:Ecosystem; D004784:Environmental Monitoring; D005069:Evaluation Studies as Topic; D005160:Facility Design and Construction; D006801:Humans; D008021:Life Support Systems / Q000295:instrumentation*; D013816:Thermodynamics; D018505:Waste Management
chemical_list: D002245:Carbon Dioxide