Temperate southern Australian coastal waters are characterised by surprisingly high rates of nitrogen fixation and diversity of diazotrophs.

ABSTRACT: Biological dinitrogen (N₂) fixation is one mechanism by which specific microorganisms (diazotrophs) can ameliorate nitrogen (N) limitation. Historically, rates of N₂ fixation were believed to be limited outside of the low nutrient tropical and subtropical open ocean; however, emerging evidence suggests that N₂ fixation is also a significant process within temperate coastal waters. Using a combination of amplicon sequencing, targeting the nitrogenase reductase gene (nifH), quantitative nifH PCR, and ¹⁵N₂ stable isotope tracer experiments, we investigated spatial patterns of diazotroph assemblage structure and N₂ fixation rates within the temperate coastal waters of southern Australia during Austral autumn and su

SUBMITTER: Messer LF 

PROVIDER: S-EPMC7931716 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature