Previous studies of organic matter (OM) dynamics in frontal zones have emphasized biological and chemical controls, whereas the role of vertical physical processes remains insufficiently understood. Here, we integrated an isopycnic mixing model and principal component analysis with biogeochemical measurements to investigate OM cycling in the Luzon Strait frontal system. Four subregions were identified: cyclonic eddy core (CEC)...

Eutrophication, mainly caused by the oversupply of inorganic nitrogen and phosphate, has increased and become a serious environmental problem in the coastal bays of Beibu Gulf, a newly developing industry and port in South China. However, the sources of nitrate are poorly understood in the gulf. In this study, nitrate dual isotopes (δ 15 N-NO 3 - and δ 18 O-NO 3 - ) and ammonium isotopes (δ 15 N-NH 4 + ) were measured during t...

Heavy metal pollution in the mariculture areas is of considerable attention due to its potential ecological effects and public concern for seafood safety. A better understanding of the current contamination status and historical trend of heavy metals in the ecosystems of mariculture areas has an important implication for the sustainable development of marine ecosystems and for public health concerns. To assess the impact of hu...