%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Guerin, F.
%A Abril, G.
%A Richard, S.
%A Burban, B.
%A Reynouard, C.
%A Seyler, Patrick
%A Delmas, R.
%T Methane and carbon dioxide emissions from tropical reservoirs: Significance of downstream rivers - art. no. L21407
%D 2006
%L fdi:010080309
%G ENG
%J Geophysical Research Letters
%@ 0094-8276
%K ZONE TROPICALE
%M CC:0002421749-0006
%N 21
%P art. L21407 [6 ]
%R 10.1029/2006GL027929
%U https://www.documentation.ird.fr/hor/fdi:010080309
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2021-06/010080309.pdf
%V 33
%W Horizon (IRD)
%X Methane (CH4) and carbon dioxide (CO2) concentrations and water-air fluxes were measured in three tropical reservoirs and their respective rivers downstream of the dams. From reservoirs, CH4 and CO2 flux were in the range of 3 +/- 2 and 254 +/- 392mmol. m(-2).d(-1), respectively. Rivers downstream of dams were significantly enriched in CH4 and CO2 originating from reservoir hypolimnions. From rivers, CH4 and CO2 flux were in the range of 60 +/- 38 and 859 +/- 400 mmol. m(-2).d(-1), respectively. Despite their relatively small surfaces, rivers downstream of dams accounted for a significant fraction ( 9 - 33% for CH4 and 7 - 25% for CO2) of the emissions across the reservoir surfaces classically taken into account for reservoirs. A significant fraction of CH4 appeared to degas at the vicinity of the dam ( turbines and spillways), although it could not be quantified.
%$ 062 ; 064