Changes of N and P Fluxes in Sediment-Water Surface in Aquaculture Pond during Aestivation of Sea Cucumber Apostichopus japonicus
WANG Bai, GAO Shan, ZHOU Zunchun
Key Laboratory of Marine Biological Resources and Ecology, Liaoning Province, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
Abstract：In order to study the fluxes of N and P in sediment-water surface in aquaculture pond, the concentrations of NO2-, NO3-, NH4+ and DIP in sea water of sediment-water surface samples were detected and analyzed, during the aestivation of sea cucumber Apostichopus japonicus from the June to the October. The results were found that the fluxes of NOx--N in sediment-water surface had a special change of firstly then ascend in the sea cucumber aquaculture pond, from the June to October, the minimum value was -(66.12±7.66) mg/(m2·d) in the August. The fluxes of NH4+-N in sediment-water surface were increased, then decreased and then increased, the maximum value was (6.21±0.55) mg/(m2·d) in the July, the minimum value was -(14.88±1.44) mg/(m2·d) in the September. The fluxes of DIP in sediment-water surface were increased firstly, then decreased, the maximum value was (4.20±0.56) mg/(m2·d) in the August, the minimum value was -(3.48±0.43) mg/(m2·d) in the October. The relevance analysis showed that the DIP fluxes were significantly positively correlated to sea water temperature, and negatively to the DIP concentrations in sea water. The NOx--N fluxes were significantly positively correlated to the concentrations of NOx- in sea water. These results showed that there were the nitrogen sequestration and phosphorus release of the sediment, regulated the content of N and P in water, in aquaculture pond during the aestivation of sea cucumber from the June to the October. The findings would provide scientific basis for the further study of ecological health cultivation and environment control in sea cucumber aquaculture pond.
王摆,高杉,周遵春. 仿刺参夏眠前后池塘沉积物—水界面氮、磷通量研究[J]. 水产科学, 2021, 40(2): 239-243.
WANG Bai, GAO Shan, ZHOU Zunchun. Changes of N and P Fluxes in Sediment-Water Surface in Aquaculture Pond during Aestivation of Sea Cucumber Apostichopus japonicus. 水产科学, 2021, 40(2): 239-243.
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2021, Vol. 40 
