Solomon Dan

Yu Mo1,2,3, Aifeng Li2,4, Zhaohe Luo1, Cun Jia1, Rimei Ou1, Jinli Qiu1, Xinyu Chang1,5, Hao Huang1 and Lei Wang1* 1Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, China 2College of Environmental Science and Engineering, Ocean University of China, Qingdao, China 3Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Marine Sciences and Biotechnology, Guangxi...

Jiangnan Li1,2, Qianhang Sun1,2, Kun Lei2*, Liang Cui2 and Xubo Lv2 1College of Environmental Science and Engineering, Ocean University of China, Qingdao, China 2Chinese Research Academy of Environmental Sciences, Beijing, China Excess nitrate (NO3−) of water is a worldwide environmental problem. Therefore, identifying the sources and analyzing respective contribution rates are of great importance for improving water quality.

Highlights ● Eliminating nutrient pollution would reduce average exposure to hypoxia by ≈ 18% in Puget Sound. ● Euphotic zone bypass failed due to effluent trapping in the recirculation cells between sills. ● Outfall relocation provided ≈ 9% reduction in hypoxia exposure in Whidbey Basin (without sill). ● Relocating surface freshwater discharges to depth impacts the strength of estuarine circulation.