气候变化领域集成服务门户(CCPortal): Nutrient release from fish cage aquaculture and mitigation strategies in Daya Bay; southern China

CCPortal

DOI	10.1016/j.marpolbul.2019.06.079
	Nutrient release from fish cage aquaculture and mitigation strategies in Daya Bay; southern China
	Qi Z.; Shi R.; Yu Z.; Han T.; Li C.; Xu S.; Xu S.; Liang Q.; Yu W.; Lin H.; Huang H.
发表日期	2019
ISSN	0025326X
起始页码	399
结束页码	407
卷号	146
英文摘要	Finfish cage culture is the most predominant form of mariculture. The rapid expansion of fish cage culture systems has raised concerns about their environmental impact, such as nutrient release. In this study, for the first time, we estimated the release of nitrogen (N) and phosphorus (P) from fish cage culture in Daya Bay, southern China, by constructing N and P budget models based on a mass balance principle. In addition, the contribution and importance of nutrients from fish culture and other nutrient sources, including submarine groundwater discharge, benthic sediments, local rivers, and atmospheric deposition were assessed. The annual amount of N and P released from fish cage culture was 205.6 metric tons (hereafter tons) of N and 39.2 tons of P, including 142.7 tons of dissolved inorganic nitrogen (DIN) and 15.1 tons of dissolved inorganic phosphorus (DIP). Among the analyzed nutrient sources, the contributions of DIN and DIP from fish culture were 7.0% and 2.7%, respectively. For cages consuming conventional trash fish, 142 kg of N and 26 kg of P were released into the environment per ton of fish products, much higher than the values (72 kg N and 17.3 kg P) for cages using formulated feed. In fish culture, the dissolved nutrients were more N rich, but the particulate nutrients were more P rich. The ratio of cage-derived N and P was 21.1, higher than the ratio of coastal seawater (27.1), indicating that cage culture may also impact the local nutrient forms around farming regions. Oyster cultivation and harvest removed 126.3 tons of N and 35.1 tons of P from of the bay. Replacing trash fish with formulated feed and co-culturing of nutrient extractive species (e.g., bivalves, macroalgae) and deposit-feeding species (e.g., sea cucumber) in fish culture zones can be efficient nutrient mitigation strategies. © 2019 Elsevier Ltd
英文关键词	Cage aquaculture; IMTA; Integrated multi-trophic aquaculture; Nutrient release; Oyster; Trash fish
语种	英语
scopus关键词	Aquaculture; Budget control; Discharge (fluid mechanics); Dissolution; Environmental impact; Fish; Groundwater; Marine biology; Meteorological problems; Molluscs; Nitrogen; Phosphorus; Shellfish; Atmospheric depositions; Dissolved inorganic nitrogens; Dissolved inorganic phosphorus; Dissolved nutrients; IMTA; Nutrient release; Oyster; Submarine groundwater discharge; Nutrients; ground water; nitrogen derivative; phosphorus; sea water; nitrogen; phosphorus; cage culture; carbon budget; eutrophication; finfish; nitrogen; oyster culture; pollution control; aquaculture; Article; atmospheric deposition; benthos; China; fish; nonhuman; nutritional parameters; oyster; seashore; sediment; animal; animal food; aquaculture; bay; chemistry; ecosystem restoration; fish; procedures; river; water pollutant; China; Daya Bay; Guangdong; Bivalvia; Holothuroidea; Ostreidae; Animal Feed; Animals; Aquaculture; Bays; China; Environmental Restoration and Remediation; Fishes; Nitrogen; Nutrients; Ostreidae; Phosphorus; Rivers; Seawater; Water Pollutants, Chemical
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149708
作者单位	Guangdong Provincial Key Laboratory of Fishery Ecology and Environment and Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou, 510300, China; South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China
推荐引用方式 GB/T 7714	Qi Z.,Shi R.,Yu Z.,et al. Nutrient release from fish cage aquaculture and mitigation strategies in Daya Bay; southern China[J],2019,146.
APA	Qi Z..,Shi R..,Yu Z..,Han T..,Li C..,...&Huang H..(2019).Nutrient release from fish cage aquaculture and mitigation strategies in Daya Bay; southern China.Marine Pollution Bulletin,146.
MLA	Qi Z.,et al."Nutrient release from fish cage aquaculture and mitigation strategies in Daya Bay; southern China".Marine Pollution Bulletin 146(2019).