Sargasso Sea bacterioplankton community structure and drivers of variance as revealed by DNA metabarcoding analysis.

ABSTRACT: Marine microbes provide the backbone for pelagic ecosystems by cycling and fixing nutrients and establishing the base of food webs. Microbial communities are often assumed to be highly connected and genetically mixed, with localized environmental filters driving minor changes in structure. Our study applied high-throughput Illumina 16S ribosomal RNA gene amplicon sequencing on whole-community bacterial samples to characterize geographic, environmental, and stochastic drivers of community diversity. DNA was extracted from seawater collected from the surface (N = 18) and at depth just below the deep chlorophyll-a maximum (DCM mean depth = 115.4 m; N = 22) in the Sargasso Sea and adjacent oceanographic regions. Discrete bacterioplankton assemblages were observed at varyin

SUBMITTER: Gill JG 

PROVIDER: S-EPMC8893026 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature