Shifts among Eukaryota, Bacteria, and Archaea define the vertical organization of a lake sediment.

ABSTRACT:

Background

Lake sediments harbor diverse microbial communities that cycle carbon and nutrients while being constantly colonized and potentially buried by organic matter sinking from the water column. The interaction of activity and burial remained largely unexplored in aquatic sediments. We aimed to relate taxonomic composition to sediment biogeochemical parameters, test whether community turnover with depth resulted from taxonomic replacement or from richness effects, and to provide a basic model for the vertical community structure in sediments.

Methods

We analyzed four replicate sediment cores taken from 30-m depth in oligo-mesotrophic Lake Stechlin in northern Germany. Each 30-cm core spanned ca. 170 years of sediment accumulation according to ¹³⁷Cs dating and

SUBMITTER: Wurzbacher C 

PROVIDER: S-EPMC5385010 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature