Abstract:Microbial communities, sulfur isotope of sulfides (δ34SAVS and δ34SCRS) and sulfur and oxygen isotopes of sulfate (δ34SSO4 and δ18OSO4) in sediments were analyzed to study the biotransformation of sulfur in a penguin-affected lake Y2 and a pristine YO from Fildes Peninsula, Antarctic Peninsula. The microbial communities in Y2 were mainly associated with penguin activities, while those in YO were limited by nutrients. The much enriched δ34SSO4 recorded at depth of 30, 41 and 52 cm in Y2 indicates very strong su… Show more
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