Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Ira-Adeline SIMIONOV, Isabelle METAXA, Alina MOGODAN, Stefan-Mihai PETREA, Aurelia NICA, Victor CRISTEA
The aquaculture sector registers the fastest growth compared to other food production systems. Most of the Romanian aquaculture production is based on cyprinid species reared in ponds. This technology raises certain concerns related to environment sustainability, because aquaculture effluent contains high concentration of nitrogen, which can cause water pollution and eutrophication. Thus, the objective of this study is to determine if technologies based on integrated multi-trophic aquaculture (IMTA) design can optimize the sustainability of cyprinids pond-based production systems. A number of 4 fish species (common carp - CC; grass carp - GC; bighead carp - BC and silver carp - SC) were used in two rearing technologies (polyculturevs. IMTA). The experimental design includes 2 variants: PCP - polyculture pond (CC + GC + BC + SC) and CP-PP - IMTA partitioned pond (CC monoculture in CP part and CC + GC + BC + SC polyculture in PP part, where no feed was administrated). Total nitrogen (TN) was determined from water, sediments, reed and fish. A main conclusion of this study is that CP-PP variant registered a better TN utilization, fact leads to a reduced environmental impact of cyprinids pond aquaculture.
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