Characterization of Microbial Communities in Pilot-Scale Constructed Wetlands with Salicornia for Treatment of Marine Aquaculture Effluents

Archaea : an International Microbiological Journal
Xiaona MaYing Liu

Abstract

Microorganisms play an essential role in the performance of constructed wetlands (CWs) for wastewater treatment. However, there has been limited discussion on the characteristics of microbial communities in CWs for treatment of effluents from marine recirculating aquaculture systems (RAS). This study is aimed at characterizing the microbial communities of pilot-scale CWs with Salicornia bigelovii for treatment of saline wastewater from a land-based Atlantic salmon RAS plant located in Northern China. Illumina high-throughput sequencing was employed to identify the profile of microbial communities of three CWs receiving wastewater under different total ammonia nitrogen (TAN) concentrations. Results of this study showed remarkable spatial variations in diversity and composition of microbial communities between roots and substrates in three CWs, with distinct response to different TAN concentrations. In particular, Proteobacteria, Firmicutes, Cyanobacteria, and Bacteroidetes were predominant in roots, while Cyanobacteria, Proteobacteria, Firmicutes, Verrucomicrobia, and Bacteroidetes were prevalent in substrates. Moreover, redundancy analysis indicated that specific functional genera, such as Nitrosopumilus, Vibrio, Pseudoalteromo...Continue Reading

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Citations

Apr 21, 2019·Applied and Environmental Microbiology·Bliss Ursula FurtadoKatarzyna Hrynkiewicz
Jul 8, 2021·Canadian Journal of Microbiology·Macarena Mellado, Jeannette Vera

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Methods Mentioned

BETA
electrophoresis
PCR

Software Mentioned

R package vegan
SPSS
UCHIME
FLASH
QIIME
Canoco

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