Anthropogenic activities have severely altered many coastal ecosystems by increasing the input of nutrients through such as rivers and groundwater, wastewater discharge, atmospheric deposition, resulting in eutrophication, modifying aquatic food webs, and provoking more severe hypoxic events in coastal marine environments. Sustainability of marine ecosystem production is unavoidably impacted by multi-stressors. A better understanding of the fate of nutrients entering the coastal ecosystem is an important issue with implications for environmental management.