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| Titel |
Rainfall leads to increased pCO2 in Brazilian coastal lakes |
| VerfasserIn |
H. Marotta, C. M. Duarte, L. Pinho, A. Enrich-Prast |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 7, no. 5 ; Nr. 7, no. 5 (2010-05-18), S.1607-1614 |
| Datensatznummer |
250004772
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| Publikation (Nr.) |
 copernicus.org/bg-7-1607-2010.pdf |
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| Zusammenfassung |
| The variation of partial pressure of CO2 (pCO2), pH, salinity and
dissolved organic carbon (DOC) in surface waters of 12 coastal Brazilian
lakes was examined following periods of contrasting rainfall. Periods of
high rainfall were followed by a large, almost 10 fold, increase in
pCO2 and a one unit decrease in pH in the lakes, whereas no consistent
changes in DOC were observed. CO2 emissions to the atmosphere from the
Brazilian coastal lakes studied here were highly enhanced, on average, from
28.5 ± 6.0 mmol C m−2 d−1 in dry periods to 245.3.1 ± 51.5 mmol C m−2 d−1 following periods of heavy rainfall. The
increased inputs of pCO2 following periods of high rainfall are believed
to be derived from increased inputs of pCO2 from groundwaters to the
lakes. |
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