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  • Marotta, H., et al. (author)
  • Large CO2 disequilibria in tropical lakes
  • 2009
  • In: Global Biogeochemical Cycles. - 0886-6236 .- 1944-9224. ; 23
  • Journal article (peer-reviewed)abstract
    • On the basis of a broad compilation of data on pCO(2) in surface waters, we show tropical lakes to be, on average, far more supersaturated and variable in CO2 (geometric mean +/- SE pCO(2) = 1804 +/- 35 mu atm) than temperate lakes (1070 +/- 6 mu atm). There was a significant negative relationship between pCO(2) and latitude, resulting in an average decrease of pCO(2) by 2.8 +/- 0.5% per degree latitude. In addition, we found a general positive relationship between pCO(2) and water temperature across lakes involving an average increase (+/-SE) in 6.7 +/- 0.8% per degrees C. A conservative annual efflux from global lakes to the atmosphere was reestimated to 0.44 Gt C. Our results show tropical lakes maintain large CO2 disequilibria with the atmosphere, playing a disproportionate and variable role in the flux of CO between lakes and the atmosphere, thereby being a significant component of the global C cycle.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Minnhagen, Petter (1)
Sobek, S (1)
Duarte, C. M. (1)
Christofano, G. (1)
Marotta, V. (1)
Naddeo, A. (1)
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Niccoli, G. (1)
Enrich-Prast, A. (1)
Marotta, H. (1)
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University
Umeå University (1)
Uppsala University (1)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (1)

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