Evaluation and Analysis of Water Quality of Marine Aquaculture Area

Xianyu Zhang, Yingqi Zhang, Qian Zhang, Peiwu Liu, Rui Guo, Shengyi Jin, Jiawen Liu, Lei Chen, Zhen Ma and Ying Liu
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Xianyu Zhang: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Yingqi Zhang: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Qian Zhang: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Peiwu Liu: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Rui Guo: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Shengyi Jin: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Jiawen Liu: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Lei Chen: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Zhen Ma: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China
Ying Liu: Dalian Ocean University, College of Marine Sciences, Dalian 116023, China

IJERPH, 2020, vol. 17, issue 4, 1-15

Abstract: In the rapid development of marine aquaculture, the water quality of aquatic environments is regarded as a main limiting factor. Therefore, it is necessary to assess the water quality and environmental conditions in marine aquaculture areas and find out the main influencing factors regarding damage to the water quality environment. In the present research, pond aquaculture and cage aquaculture areas were sampled in May, August and November in 2018. Nine water quality indicators were detected, including pH, temperature, salinity, dissolved oxygen, molybdate-reactive phosphorus, chemical oxygen demand, chlorophyll a, inorganic nitrogen and antibiotic resistance genes (ARGs). Principal component analysis (PCA) was used to analyze the water quality conditions, spatial–temporal changes, and the driving factors in pond and cage aquaculture areas. The results showed that three main components were extracted from the pond aquaculture area, which explained 66.82% of the results, the most relevant factors are salinity, dissolved oxygen and ARGs. For the cage aquaculture area, three main components were extracted which can account for 72.99% of the results, the most relevant factors are chlorophyll a, salinity and dissolved oxygen. The comprehensive scores of the principal components indicated that the heaviest polluted months in pond and aquaculture areas were August and November, respectively. The water quality of the pond aquaculture area is mainly limited by the volume of the pond, while aquaculture activities and seasonality are the main factors for cage aquaculture. ARGs in cage culture areas showed more variety and frequency compared with pond culture areas, which indicated that terrestrial input might be one of the sources for ARGs occurrence. The results would be helpful for the relevant authorities to select water quality monitoring parameters in marine aquaculture areas.

Keywords: water quality assessment; principal component analysis; antibiotic resistance genes; marine aquaculture; salinity; dissolved oxygen (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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