01520naa a2200205 a 450000100080000000500110000800800410001902400350006010000160009524501110011126000090022252009200023165000120115165000110116370000220117470000170119670000170121370000240123077300600125419009362013-02-19       2011    bl ---       0--  u    #d7 a10.4257/oeco.2011.1503.172DOI1 aBERGIER, I.  aCarbon dioxide and methane fluxes in the littoral zone of a tropical savanna reservoir (Corumbá, Brazil).  c2011  aA series of dynamic chambers, an infrared photoacoustic gas analyzer and atmospheric and water quality sensors were deployed to determine CH4 and CO2 emissions and related environmental conditions in Corumbá Reservoir, Goiás, Brazil. Mean CH4 bubble fluxes in November 2004, and March and August 2005 were 0.05 ± 2.19, 4 ± 45 and 505 ± 1192mgCH4.m-2.d-1, respectively. Mean CH4 diffusive fluxes were 17 ± 6, 37 ± 9 and 69 ± 28mgCH4.m-2.d-1, and CO2 diffusive fluxes were respectively 59 ± 398, 385 ± 629 and 1466 ± 1223mgCO2.m-2.d-1. Gas fluxes varied according to the depth of the sampling sites in the littoral zone, though spatial or temporal patterns were not seasonally consistent. Changes in CH4 and CO2 emissions were likely associated with changes in sediment pressure, methanogenesis and methanotrophy induced by atmospheric and climate variations, such as cold fronts and hydrologic variations.  amethane  aMetano1 aNOVO, E. M. L. M.1 aRAMOS, F. M.1 aMAZZI, E. A.1 aRASERA, M. F. F. L.  tOecologia Australisgv. 15, n.3, p. 666-681, set. 2011.