期刊
MARINE POLLUTION BULLETIN
卷 95, 期 1, 页码 342-349出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2015.03.016
关键词
Bioremediation strategy; Eutrophication; Integrated multi-trophic aquaculture (IMTA); Mariculture; Seaweeds
资金
- Ocean Public Welfare Scientific Research Project, China [201205009-05, 201205010]
- Key Projects in the National Science & Technology Pillar Program [2012BAC07B03]
- Shanghai Universities First-class Disciplines Project, Discipline name: Marine Science [0707]
Intensive mariculture results in a rise in nutrient concentrations, then leads to serious eutrophication in coastal waters. Based on the sampling data obtained between August 2012 and July 2013, the eutrophication status in Yantian Bay was assessed, and the proportion of marine animals co-cultured with seaweeds was evaluated. The nutritional quality index (NQI) ranged from 4.37 to 13.20, indicating serious eutrophication conditions. The annual average ratio of nitrogen/phosphorus (N/P) was 25.19, indicating a nitrogen surplus in this system. DIN was selected as the best parameter to balance seaweed absorption and marine animal DIN production. Gracilaria lemaneiformis and Laminaria japonica were selected as cocultured seaweeds. The optimal proportion of G. lemaneiformis production was assessed as 20074.14 tonnes. The optimal proportion of L. japonica production was evaluated as 15890.68 tonnes. High-temperature adapted seaweeds should be introduced for removing nutrients releasing by farmed aquatic animals in the summer in Yantian Bay. (C) 2015 Elsevier Ltd. All rights reserved.
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