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Bioturbation by sea cucumbers Apostichopus japonicus affects sediment phosphorus forms and sorption characteristics

文献类型： 外文期刊

作者： Hou, Yi-Ran 1 ; Sun, Yong-Jun 4 ; Gao, Qin-Feng 1 ; Dong, Shuang-Lin 1 ; Wen, Bin 5 ; Pan, Zhe 1 ; Liu, Chengyue 1 ;

作者机构： 1.Ocean Univ China, Key Lab Mariculture, Minist Educ, Qingdao 266003, Shandong, Peoples R China

2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266003, Shandong, Peoples R China

3.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Minist Agr, Key Lab Freshwater Fisheries & Germplasm Resource, Wuxi 214081, Peoples R China

4.Homey Grp Co Ltd, Res Off, Rongcheng 264306, Peoples R China

5.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China

关键词： Apostichopus japonicus; Sea cucumber; Bioturbation; Phosphorus forms; Phosphorus sorption characteristics; Holothuroidea

期刊名称：AQUACULTURE ENVIRONMENT INTERACTIONS （ 影响因子：3.074； 五年影响因子：3.475 ）

ISSN： 1869-215X

年卷期： 2018 年 10 卷

页码：

收录情况： SCI

摘要： An 84 d experiment was carried out to investigate the impact of sea cucumber Apostichopus japonicus (Selenka) bioturbation on different phosphorus forms and phosphorus sorption characteristics in the sediment. Sea cucumbers were cultured in fiberglass tanks (30 x 40 x 50 cm) with 5 cm thick sediment, and were divided into 4 groups according to culture densities, i.e. 0, 4, 6, and 8 ind. tank(-1). For each of these 4 densities, 4 replicates of sea cucumbers were cultured. Results showed that the increasing culture density significantly increased the content of NaOH-extractable P (NaOH-P) and decreased the content of organic phosphorus (OP) in sediment. Phosphorus maximum buffer capacity (MBC) and energy adsorption (K-f) values of sediment in the lower density groups (0 and 4 ind. tank(-1)) decreased significantly with time, while no temporal changes were observed in MBC and K-f values of sediment in the higher density groups (6 and 8 ind. tank(-1)). Sea cucumbers facilitated the decomposition of OP and the formation of NaOH-P in sediment, and improved the ability and capacity of phosphorus sorption of the sediment with increasing culture density. Our results suggest that the use of sea cucumbers may help to prevent eutrophication in integrated multitrophic aquaculture systems.

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