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| Titel |
Differences and implications in biogeochemistry from maximizing entropy production locally versus globally |
| VerfasserIn |
J. J. Vallino |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2190-4979
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| Digitales Dokument |
URL |
| Erschienen |
In: Earth System Dynamics ; 2, no. 1 ; Nr. 2, no. 1 (2011-06-17), S.69-85 |
| Datensatznummer |
250000461
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| Publikation (Nr.) |
 copernicus.org/esd-2-69-2011.pdf |
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| Zusammenfassung |
| In this manuscript we investigate the use of the maximum entropy production
(MEP) principle for modeling biogeochemical processes that are catalyzed by
living systems. Because of novelties introduced by the MEP approach, many
questions need to be answered and techniques developed in the application of
MEP to describe biological systems that are responsible for energy and mass
transformations on a planetary scale. In previous work we introduce the
importance of integrating entropy production over time to distinguish
abiotic from biotic processes under transient conditions. Here we
investigate the ramifications of modeling biological systems involving one
or more spatial dimensions. When modeling systems over space, entropy
production can be maximized either locally at each point in space
asynchronously or globally over the system domain synchronously. We use a
simple two-box model inspired by two-layer ocean models to illustrate the
differences in local versus global entropy maximization. Synthesis and
oxidation of biological structure is modeled using two autocatalytic
reactions that account for changes in community kinetics using a single
parameter each. Our results show that entropy production can be increased if
maximized over the system domain rather than locally, which has important
implications regarding how biological systems organize and supports the
hypothesis for multiple levels of selection and cooperation in biology for
the dissipation of free energy. |
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