Higher Abundance of Sediment Methanogens and Methanotrophs Do Not Predict the Atmospheric Methane and Carbon Dioxide Flows in Eutrophic Tropical Freshwater Reservoirs.

ABSTRACT: Freshwater reservoirs emit greenhouse gases (GHGs) such as methane (CH₄) and carbon dioxide (CO₂), contributing to global warming, mainly when impacted by untreated sewage and other anthropogenic sources. These gases can be produced by microbial organic carbon decomposition, but little is known about the microbiota and its participation in GHG production and consumption in these environments. In this paper we analyzed the sediment microbiota of three eutrophic tropical urban freshwater reservoirs, in different seasons and evaluated the correlations between microorganisms and the atmospheric CH₄ and CO₂ flows, also correlating them to limnological variables. Our results showed that deeper water columns promote high methanogen abundance, with predo

SUBMITTER: Pierangeli GMF 

PROVIDER: S-EPMC8010658 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature