投放双齿围沙蚕和马尾藻对养殖底泥上覆水氮、磷含量的影响

doi:10.11978/j.issn.1009-5470.2012.04.018

Abstract

Abstract:

This study discussed the effects on nitrogen and phosphorus in overlying water due to the introduction of Perinereis aibuhitensis and Sargassum hemiphyllum. Four and six individuals of Perinereis aibuhitensis were put into the recovery system (1.5 kg bottom mud, 6 L sea water and 10 g Sargassum hemiphyllum) as treatment groups 1 and 2, respectively. The results indicated that nitrogen and phosphorus in overlying water changed significantly after the treatment. After the first week of culturing, phosphate did not change obviously, but ammonification and nitrification were strengthened. Two months later, NH4+-N was reduced significantly, while nitrogen and phosphate increased compared with the control. Sargassum helped the uptake of nutrients in the overlying water, the wet weight of which increased 37%, 58% and 101% in group 1, group 2 and control, respectively. These results showed that the recovery system of six Perinereis aibuhitensis and 10 g Sargassum hemiphyllum could effectively improve the sediment environment.

Key words: polychaete worm, seaweed, sediment, bioturbation, nutrient, bioremediation

CLC Number:

X171

JIANG Xiao-tao, TAN Ye-hui, KE Zhi-xin, HUANG Liang-min. Effects of introduction of Perinereis aibuhitensis and Sargassum hemiphyllum on nitrogen and phosphorus in overlying water[J].Journal of Tropical Oceanography, 2012, 31(4): 129-134.

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Effects of introduction of Perinereis aibuhitensis and Sargassum hemiphyllum on nitrogen and phosphorus in overlying water

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