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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Microbial diversity across compartments in an aquaponic system and its connection to the nitrogen cycle
Authors: Schmautz, Zala
Walser, Jean-Claude
Espinal, Carlos A.
Gartmann, Florentina
Scott, Benjamin
Pothier, Joël F.
Frossard, Emmanuel
Junge, Ranka
Smits, Theo H. M.
et. al: No
DOI: 10.1016/j.scitotenv.2022.158426
Published in: Science of the Total Environment
Volume(Issue): 852
Issue: 158426
Issue Date: 2-Sep-2022
Publisher / Ed. Institution: Elsevier
ISSN: 0048-9697
Language: English
Subjects: Aquaponics; Community analysis; Archaea; Bacteria; Tilapia; Animal; RNA, ribosomal, 16S; Nitrogen cycle; Sewage
Subject (DDC): 639.8: Aquaculture
Abstract: Aquaponics combines hydroponic crop production with recirculating aquaculture. These systems comprise various compartments (fish tank, biofilter, sump, hydroponic table, radial flow settler and anaerobic digester), each with their own specific environmental pressures, which trigger the formation of unique microbial communities. Triplicated aquaponic systems were used to investigate the microbial community composition during three lettuce growing cycles. The sampling of individual compartments allowed community patterns to be generated using amplicon sequencing of bacterial and archaeal 16S rRNA genes. Nitrifying bacteria were identified in the hydroponic compartments, indicating that these compartments may play a larger role than previously thought in the system's nitrogen cycle. In addition to the observed temporal changes in community compositions within the anaerobic compartment, more archaeal reads were obtained from sludge samples than from the aerobic part of the system. Lower bacterial diversity was observed in fresh fish feces, where a highly discrete gut flora composition was seen. Finally, the most pronounced differences in microbial community compositions were observed between the aerobic and anaerobic loops of the system, with unique bacterial compositions in each individual compartment.
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Published as part of the ZHAW project: Characterization of nitrogen dynamics in an aquaponic system
Appears in collections:Publikationen Life Sciences und Facility Management

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