Journal
LIMNOLOGICA
Volume 62, Issue -, Pages 1-4Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.limno.2016.09.008
Keywords
Carbon dioxide; Outgassing; Waterfalls; River
Categories
Funding
- Coordination for the Improvement of Higher Education Personnel (CAPES)
- Federal University of Juiz de Fora
- Federal University of Ouro Preto
- Federal University of Vicosa
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Inland waters are sites of intense carbon processing, stocking and transport. We examined the influence of waterfall-turbulence on CO2 partial pressures (pCO(2)) before and after waterfalls in a tropical river. The results indicated a 51.4% decrease of pCO(2) from up (1375 +/- 320 ppm) to downriver (655 +/- 58 ppm), suggesting an unaccounted degassing promoted by waterfall-turbulence. This process needs to be better understood in order to more accurately determine the role of freshwater environments in the global carbon balance. (C) 2016 Elsevier GmbH. All rights reserved.
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