期刊
AQUACULTURAL ENGINEERING
卷 92, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.aquaeng.2021.102145
关键词
Water recirculation; Nitrogen transformation; Aquaponic; Lettuce; Tilapia
资金
- Swiss National Science Foundation (SNF) [310030_169665]
- Department of Life Sciences and Facility Management of the Zurich University of Applied Sciences
- Swiss National Science Foundation (SNF) [310030_169665] Funding Source: Swiss National Science Foundation (SNF)
This study investigated the transformation of nitrogen forms within an aquaponic system, revealing significant differences between compartments attributed to individual microenvironments and microbial processes.
The presence and transformations of nitrogen (N) in the environment depend on a variety of environmental factors but are also strongly influenced by anthropogenic activities such as modern agriculture. Understanding N transformations within the context of agricultural systems is crucial for efficient use thereof. The aim of this study was to investigate the changes in concentration of N forms (ammonium, nitrite, nitrate and organic N) within an aquaponic system, a modern agricultural system, in order to obtain insights into environmental pressures influencing N transformation processes. By measuring the concentrations of the individual N compounds, complemented by the determination of abiotic parameters and other relevant nutrients within the system water at 13 sampling points, significant differences between compartments that build up an aquaponic system could be demonstrated. These differences were attributed to individual microenvironments specific to the aerobic loop, anaerobic loop and radial flow settler as a connection between the two, shaping the microbial processes within the aquaponic system.
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