期刊
MARINE POLLUTION BULLETIN
卷 110, 期 1, 页码 484-492出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2016.06.005
关键词
Integrated multi-trophic aquaculture; IMTA; MEC ocean model; Impact assessment; Bio-mitigation effect
资金
- Society for Conservation of Fisheries Resources and Marine Environment (CoFRaME)
With increasing concern over the aquatic environment in marine culture, the integrated multi-trophic aquaculture (IMTA) has received extensive attention in recent years. A three-dimensional numerical ocean model is developed to explore the negative impacts of aquaculture wastes and assess the bio-mitigation effect of IMTA systems on marine environments. Numerical results showed that the concentration of surface phytoplankton could be controlled by planting seaweed (a maximum reduction of 30%), and the percentage change in the improvement of bottom dissolved oxygen concentration increased to 35% at maximum due to the ingestion of organic wastes by sea cucumbers. Numerical simulations indicate that seaweeds need to be harvested in a timely manner for maximal absorption of nutrients, and the initial stocking density of sea cucumbers >3.9 individuals m(-2) is preferred to further eliminate the organic wastes sinking down to the sea bottom. (C) 2016 Elsevier Ltd. All rights reserved.
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