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5999090 
Journal Article 
Biogeochemical distinction of methane releases from two Amazon hydroreservoirs 
Lima, IB 
2005 
Yes 
Chemosphere
ISSN: 0045-6535
EISSN: 1879-1298 
59 
11 
1697-1702 
English 
15894055 
Biogeochemical distinction of methane emissions to the atmosphere may essentially rely on the surface area and morphometry of Amazon hydroreservoirs. Tucurui (deep) and Samuel (shallow) reservoirs released in average 13.82+/-22.94 and 71.19+/-107.4 mg CH4 m(-2)d(-1), respectively. delta13C-CH4 values from the sediments to the atmosphere indicate that the deep reservoir has extended methanotrophic layer, oxidizing large quantities of light isotope methane coming from the sediments, while sediment-generated methane can easily evade the shallow reservoir. 
Amazon; Hydroelectric reservoirs; Methane emission; Isotope analysis