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• W2104839310 abstract "A coupled photochemical-ecosystem model has been developed to simulate the early Archean biosphere. The model incorporates kinetic and nutrient limitations on biological productivity, along with constraints imposed by metabolic thermodynamics. We have used this model to predict the biogenic CH4 flux and net primary productivity (NPP) of the marine biosphere prior to the advent of oxygenic photosynthesis. Organisms considered include chemotrophic and organotrophic methanogens, H2-, H2S-, and Fe-using anoxygenic phototrophs, S-reducing bacteria, CO-using acetogens, and fermentative bacteria.CH4 production and NPP in our model are limited by the downward flux of H2, CO, S8, and H2S through the atmosphere–ocean interface and by the upwelling rate of Fe2+ from the deep oceans. For reasonable estimates of the supply rates of these compounds, we find that the biogenic CH4 flux should have ranged from approximately 1/3 to 2.5 times the modern CH4 flux. In the anoxic Archean atmosphere, this would have produced CH4 concentrations of 100 ppmv to as much as 35 000 ppmv (3.5%), depending on the rate at which hydrogen escaped to space. Recent calculations indicating that hydrogen escape was slow favour the higher CH4 concentrations. Calculated NPP is lower than in the modern oceans by a factor of at least 40. In our model, H2-based metabolism is moderately more productive than Fe2+-based metabolism, with S-based metabolism being considerably less productive. Internal recycling of sulphur within the surface ocean could conceivably raise rates of sulphur metabolism by a factor of 10 higher than the values predicted by our model. Although explicit climate calculations have not been performed here, our results are consistent with the idea that the Archean climate was warm, and possibly very hot. Some or most of our ecosystem scenarios are consistent with the carbon isotope record, depending on how that record is interpreted. If the conventional view is correct and organic carbon burial accounted for approximately 20% of total carbon burial during the Archean, then only two of our phototroph-based model ecosystems are plausible. However, if a recent alternative analysis is correct and only approximately 0–10% of total buried carbon was organic, then essentially all of our anaerobic ecosystems are plausible. A better understanding of both the geochemical and the biological records is needed to better constrain our models." @default.
• W2104839310 created "2016-06-24" @default.
• W2104839310 creator A5073431390 @default.
• W2104839310 creator A5078053479 @default.
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• W2104839310 date "2005-04-01" @default.
• W2104839310 modified "2023-10-18" @default.
• W2104839310 title "A coupled atmosphere-ecosystem model of the early Archean Earth" @default.
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• W2104839310 cites W1489938111 @default.
• W2104839310 cites W1519389355 @default.
• W2104839310 cites W1532877896 @default.
• W2104839310 cites W1576808635 @default.
• W2104839310 cites W1631820701 @default.
• W2104839310 cites W1638884317 @default.
• W2104839310 cites W1651488792 @default.
• W2104839310 cites W1663764976 @default.
• W2104839310 cites W1666242565 @default.
• W2104839310 cites W1666532264 @default.
• W2104839310 cites W1770898362 @default.
• W2104839310 cites W1807670144 @default.
• W2104839310 cites W1858582829 @default.
• W2104839310 cites W1862626561 @default.
• W2104839310 cites W1898190494 @default.
• W2104839310 cites W1965198394 @default.
• W2104839310 cites W1965724422 @default.
• W2104839310 cites W1966428847 @default.
• W2104839310 cites W1967032739 @default.
• W2104839310 cites W1969468624 @default.
• W2104839310 cites W1972615373 @default.
• W2104839310 cites W1975008107 @default.
• W2104839310 cites W1975785998 @default.
• W2104839310 cites W1981281557 @default.
• W2104839310 cites W1985379624 @default.
• W2104839310 cites W1986671359 @default.
• W2104839310 cites W1988044912 @default.
• W2104839310 cites W1988435801 @default.
• W2104839310 cites W1990587480 @default.
• W2104839310 cites W1994212233 @default.
• W2104839310 cites W1999178866 @default.
• W2104839310 cites W2003437633 @default.
• W2104839310 cites W2007827573 @default.
• W2104839310 cites W2015210102 @default.
• W2104839310 cites W2016331324 @default.
• W2104839310 cites W2027831967 @default.
• W2104839310 cites W2027888221 @default.
• W2104839310 cites W2030965685 @default.
• W2104839310 cites W2031387033 @default.
• W2104839310 cites W2032247127 @default.
• W2104839310 cites W2032500592 @default.
• W2104839310 cites W2037228913 @default.
• W2104839310 cites W2038602179 @default.
• W2104839310 cites W2041142620 @default.
• W2104839310 cites W2042757256 @default.
• W2104839310 cites W2048539091 @default.
• W2104839310 cites W2049621326 @default.
• W2104839310 cites W2054832581 @default.
• W2104839310 cites W2054861741 @default.
• W2104839310 cites W2055503466 @default.
• W2104839310 cites W2060566889 @default.
• W2104839310 cites W2060690559 @default.
• W2104839310 cites W2063068374 @default.
• W2104839310 cites W2069927109 @default.
• W2104839310 cites W2073056495 @default.
• W2104839310 cites W2073158252 @default.
• W2104839310 cites W2080205814 @default.
• W2104839310 cites W2084709851 @default.
• W2104839310 cites W2087769129 @default.
• W2104839310 cites W2089075563 @default.
• W2104839310 cites W2089410238 @default.
• W2104839310 cites W2092553727 @default.
• W2104839310 cites W2106784803 @default.
• W2104839310 cites W2107710538 @default.
• W2104839310 cites W2109506486 @default.
• W2104839310 cites W2120445312 @default.
• W2104839310 cites W2131750083 @default.
• W2104839310 cites W2138060941 @default.
• W2104839310 cites W2138545727 @default.
• W2104839310 cites W2141066579 @default.
• W2104839310 cites W2156751329 @default.
• W2104839310 cites W2161443252 @default.
• W2104839310 cites W2165303310 @default.
• W2104839310 cites W2169534343 @default.
• W2104839310 cites W2170531372 @default.
• W2104839310 cites W2478338812 @default.
• W2104839310 cites W26720159 @default.
• W2104839310 cites W2914605146 @default.
• W2104839310 cites W3020842808 @default.
• W2104839310 cites W4246058282 @default.
• W2104839310 cites W4246548745 @default.
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• W2104839310 doi "https://doi.org/10.1111/j.1472-4669.2005.00049.x" @default.
• W2104839310 hasPublicationYear "2005" @default.
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