THE LONG-TERM EVOLUTION OF THE GEOBIOSPHERE

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THE LONG-TERM EVOLUTION OF THE GEOBIOSPHERE

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dc.contributor.author Franck, Siegfried
dc.date.accessioned 2011-01-20T12:47:13Z
dc.date.available 2011-01-20T12:47:13Z
dc.date.issued 2007
dc.identifier.isbn 978-86-80019-26-0 en_US
dc.identifier.uri http://hdl.handle.net/123456789/1526
dc.description.provenance Submitted by Slavisha Milisavljevic (slavisha) on 2011-01-20T12:47:13Z No. of bitstreams: 1 franck2.pdf: 1640743 bytes, checksum: e2c9fbeee351f332622d6d26f093f290 (MD5) en
dc.description.provenance Made available in DSpace on 2011-01-20T12:47:13Z (GMT). No. of bitstreams: 1 franck2.pdf: 1640743 bytes, checksum: e2c9fbeee351f332622d6d26f093f290 (MD5) Previous issue date: 2007 en
dc.language.iso en en_US
dc.publisher Astronomical Observatory Belgrade en_US
dc.title THE LONG-TERM EVOLUTION OF THE GEOBIOSPHERE en_US
mf.subject.keywords We present a minimal model for the global carbon cycle of the Earth containing the reservoirs mantle, ocean floor, continental crust, continental biosphere, and the kerogen, as well as the aggregated reservoir ocean and atmosphere and obtain reasonable values for the present distribution of carbon in the surface reservoirs of the Earth. The Earth system model for the long-term carbon cycle is specified by introducing three different types of biosphere: procaryotes, eucaryotes, and complex multicellular life. From the Archaean to the future there always exists a procaryotic biosphere. In contrast to the eucaryotes the first appearance of complex multicellular life starts with an explosive increase in biomass connected with a strong decrease in Cambrian global surface temperature at about 0.54 Gyr ago. The biological colonization of land surface by metaphyta and the consequent increase in silicate weathering rates causes a reduction in atmospheric carbon dioxide and planetary cooling. After the Cambrian explosion there is a continuous decrease of biomass in all pools. The ultimate life span of the biosphere is defined by the extinction of procaryotes in about 1.6 Gyr. en_US
mf.document.pages 32 en_US
mf.contributor.editor-in-chief Dimitrijević, S. Milan
mf.contributor.technical-editor Milovanov, Tatjana

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