Methane, carbon dioxide and nitrous oxide emissions from two Amazonian Reservoirs during high water table

Lima, I.B.T.; Victória, Reynaldo Luiz; Novo, Evlyn Márcia Leão de Moraes; Feigl, Brigitte Josefine; Ballester, Maria Victória Ramos; Ometto, Jean Pierre Henry Balbaud

doi:10.1080/03680770.2001.11902620

Cited by 16 publications

(16 citation statements)

References 4 publications

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“…The average daily CO 2 emission rate from Balbina reservoir was close to the values reported for Tucuruí and Samuel reservoirs [ Lima et al , 2002] but considerably higher than those cited for Curuá‐Una [ Duchemin et al , 2000] and Petit Saut [ Abril et al , 2005] (Table 4). Balbina's value was also significantly higher than the average value of 960 mg C m −2 d −1 cited by Saint Louis et al [2002] for CO 2 in tropical reservoirs.…”

Section: Discussionsupporting

confidence: 79%

CO₂emissions from a tropical hydroelectric reservoir (Balbina, Brazil)

2011

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[1] Hydroelectric reservoirs can release significant quantities of CO 2 , but very few results are available from the tropics. The objective of the present study was to estimate the emission of CO 2 from the Balbina hydroelectric reservoir in the central Brazilian Amazon. Diffusive and ebullitive emissions were estimated at regular intervals, both above and below the dam, using a combination of static chambers and submerged funnels. Gas releases immediately below the dam were calculated as the difference between gas flux at the entrance and the outflow of the hydroelectric turbines. An inundation model derived from a bathymetric map and daily stage readings was used for spatial and temporal interpolation of reservoir emissions. Annual emissions of CO 2 , upstream and downstream of Balbina dam for 2005, were estimated as 2450 and 81 Gg C, respectively, for a total annual flux of 2531 Gg C. Upstream emissions were predominantly diffusive with only 0.02 Gg C yr −1 resulting from ebullition. On average, 51% of the downstream emission was released by degassing at the turbine outflow, and the remainder was lost by diffusion from the downstream river. The total annual greenhouse gas emission from Balbina dam, including the CO 2 equivalent of previously estimated CH 4 emissions, was 3 Tg C yr −1 , equivalent to approximately 50% of the CO 2 emissions derived from the burning of fossil fuels in the Brazilian metropolis of São Paulo.

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Section: Discussionsupporting

confidence: 79%

CO₂emissions from a tropical hydroelectric reservoir (Balbina, Brazil)

2011

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“…N 2 O emissions from reservoirs were recently documented for the boreal region and their contribution to global warming appear as very minor [ Huttunen et al , 2002; Hendzel et al , 2005]. It is however still unclear if N 2 O emission from tropical reservoirs is an environmental issue, because data are sparse and the contribution of fluxes downstream of the dams are not documented [ Lima et al , 2002; Sikar et al , 2005].…”

Section: Introductionmentioning

confidence: 99%

Nitrous oxide emissions from tropical hydroelectric reservoirs

Guerin¹,

Abril²,

Tremblay³

et al. 2008

Geophysical Research Letters

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[1] We report original data on nitrous oxide (N 2 O) fluxes from two tropical reservoirs, their rivers below the dam, and from natural aquatic ecosystems and rainforest soils in French Guiana and Panama. We also review published N 2 O fluxes from other tropical reservoirs and natural environments. We show that: (1) N 2 O emissions from tropical reservoirs occur mainly at the reservoir surface, fluxes downstream of dams being minor; (2) Because preflooding natural N 2 O fluxes are significant, the net N 2 O emissions from reservoirs are less than $50-70% of gross N 2 O emissions; (3) the contribution of N 2 O to the global warming potential of emissions from reservoirs could be significant for gross emissions, but less than 10% for net emissions, disregarding N 2 O degassing emissions.

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“…The top and the bottom line indicate the maximum and minimum value. Reported data has been compiled from publications (Barnes and Owens, 1998;Garcia-Ruiz et al, 1999;McMahon and Dennehy, 1999;De Wilde and de Bie, 2000;Cole and Caraco, 2001;Huttunen et al, 2002;Lima et al, 2002;Harrison and Matson, 2003;LaMontagne et al, 2003;Laursen and Seitzinger, 2004;Harrison et al, 2005;Hendzel et al, 2005;Sikar et al, 2005;Stow et al, 2005;Hlavacova et al, 2006;Tallec et al, 2006;Clough et al, 2007;Ferron et al, 2007;Beaulieu et al, 2008;Guerin et al, 2008;Rajkumar et al, 2008;Silvennoinen et al, 2008;Wilcock and Sorrell, 2008;Garnier et al, 2009;Toyoda et al, 2009;Wang et al, 2009a;Beaulieu et al, 2010;Goncalves et al, 2010;Zhang et al, 2010;Barnes and Upstill-Goddard, 2011;Baulch et al, 2011aBaulch et al, ,b, 2012Deemer et al, 2011;Liu et al, 2011;Yang et al, 2011;Bouillon et al, 2012;Diem et al, 2012;Outram and Hiscock, 2012;Rosamond et al, 2012;Yan et al, 2012;…”

Section: Discussionmentioning

confidence: 99%