{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T11:38:52Z","timestamp":1784806732937,"version":"3.55.0"},"reference-count":6,"publisher":"American Geophysical Union (AGU)","issue":"3","license":[{"start":{"date-parts":[[2011,6,3]],"date-time":"2011-06-03T00:00:00Z","timestamp":1307059200000},"content-version":"vor","delay-in-days":6345,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["EoS Transactions"],"published-print":{"date-parts":[[1994,1,18]]},"abstract":"<jats:p>Oxygen concentrations have dropped sharply in the air of \u201cBiosphere 2,\u201d an enclosed experimental ecosystem located in southern Arizona. Biosphere 2 is a 3.15\u2010acre airtight structure roofed in glass and underlain by an impermeable liner. It houses an artificial ecosystem containing soil, air, water, flora, and fauna and was built primarily as an apparatus for the experimental investigation of biogeochemical cycles, whole ecosystems, and life\u2010support systems for space habitation [see <jats:italic>Nelson et al.<\/jats:italic>, 1993].<\/jats:p><jats:p>O<jats:sub>2<\/jats:sub> in Biosphere 2 decreased during the first 16 months of closure from the ambient 21% to 14%, enough to cause health problems in the human occupants. We present evidence that the O<jats:sub>2<\/jats:sub> loss is caused by microbial respiration of the excessive amount of organic matter incorporated into the experiment's soils and furthermore, that the respired CO<jats:sub>2<\/jats:sub> is reacting with the structure's concrete to form calcium carbonate.<\/jats:p>","DOI":"10.1029\/94eo00285","type":"journal-article","created":{"date-parts":[[2006,10,19]],"date-time":"2006-10-19T18:07:28Z","timestamp":1161281248000},"page":"33-37","source":"Crossref","is-referenced-by-count":41,"title":["Oxygen loss in biosphere 2"],"prefix":"10.1029","volume":"75","author":[{"given":"Jeffrey P.","family":"Severinghaus","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wallace S.","family":"Broecker","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William F.","family":"Dempster","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taber","family":"MacCallum","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Wahlen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"13","published-online":{"date-parts":[[2011,6,3]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(84)90089-X"},{"key":"e_1_2_1_3_1","volume-title":"Workshop F4.4\u2010M.1.10X, Congress on Space Research","author":"Dempster W. F.","year":"1994"},{"key":"e_1_2_1_4_1","volume-title":"Handbook of Chemistry and Physics","year":"1988"},{"key":"e_1_2_1_5_1","unstructured":"Keeling R. F. Development of an interferometric oxygen analyzer for precise measurement of the atmospheric O2mole fraction Ph.D. thesis Harvard University 179 pp. 1988."},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.2307\/1312123"},{"key":"e_1_2_1_7_1","volume-title":"Biogeochemistry: An Analysis of Global Change","author":"Schlesinger W. H.","year":"1991"}],"container-title":["Eos, Transactions American Geophysical Union"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1029%2F94EO00285","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/agupubs.onlinelibrary.wiley.com\/doi\/pdf\/10.1029\/94EO00285","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,22]],"date-time":"2023-09-22T16:03:53Z","timestamp":1695398633000},"score":1,"resource":{"primary":{"URL":"https:\/\/agupubs.onlinelibrary.wiley.com\/doi\/10.1029\/94EO00285"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1994,1,18]]},"references-count":6,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1994,1,18]]}},"alternative-id":["10.1029\/94EO00285"],"URL":"https:\/\/doi.org\/10.1029\/94eo00285","archive":["Portico"],"relation":{},"ISSN":["0096-3941","2324-9250"],"issn-type":[{"value":"0096-3941","type":"print"},{"value":"2324-9250","type":"electronic"}],"subject":[],"published":{"date-parts":[[1994,1,18]]}}}