Human activities and coastal development driven by economic growth in countries bordering the Arabian Gulf have increased marine pollution, including eutrophication. In response to growing concerns, the Environment Agency- Abu Dhabi initiated a long-term monitoring survey (2006 to 2019) to study the marine water quality of Abu Dhabi, including the Mussafah South Channel (MSC). This confined area is of eutrophic nature, under pressure due to receiving approximately 400,000 m3 of treated sewage per day and continuous algal blooms incidents with maximum concentration of 18 x 107 cells l−1. Observations made on physical, chemical, and biological parameters, such as temperature (18 -35 °C), salinity (28 – 70 psu), pH (5 to 9), and dissolved oxygen (0.02 – 13 mg l−1) revealed abnormal conditions and a stratified water column. The nutrient values, particularly nitrate (2.90 – 866.06 Mol l−1) and phosphate (1.68 -98.24 Mol l−1), were many times higher than Abu Dhabi’s reference values (3.55 Mol l−1 and 1.58 Mol l−1, respectively) which confirmed its eutrophic nature. Algal blooms were frequently recorded, and were associated with widespread harmful impacts, including hypoxic events (oxygen levels of 0.02 mg l−1), finfish kills (Nematalosa nasus) and subsequent loss of benthic organisms. The deterioration of water quality in the MSC is probably due to the anthropogenic activities, insufficient treatment of municipal and industrial wastewater discharges. Extensive sediment load may also have exacerbated the situation and contributed to eutrophication and subsequent alteration of the ecosystem. The sources, composition and consequences of nutrient enrichment along with the management actions are also discussed in detail.

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富营养化的来源、影响和管理：来自阿布扎比的案例研究

阿拉伯湾沿岸国家经济增长推动的人类活动和沿海开发加剧了海洋污染，包括富营养化。为了应对日益增长的担忧，环境署-阿布扎比启动了一项长期监测调查（2006 年至 2019 年），以研究阿布扎比的海水质量，包括穆萨法南海峡 (MSC)。由于每天接收大约 400,000 立方米的处理过的污水和最大浓度为 18 x 107 个细胞 l-1 的持续藻华事件，这个受限区域具有富营养化性质，处于压力之下。对温度 (18 -35 °C)、盐度 (28 – 70 psu)、pH (5 至 9) 和溶解氧 (0.02 – 13 mg l−1) 等物理、化学和生物参数进行的观察显示异常情况和分层水柱。营养价值，特别是硝酸盐 (2.90 – 866.06 Mol l-1) 和磷酸盐 (1.68 -98.24 Mol l-1)，比阿布扎比的参考值（分别为 3.55 Mol l-1 和 1.58 Mol l-1）高很多倍，这证实了其富营养化性质。藻类大量繁殖经常被记录，并且与广泛的有害影响有关，包括缺氧事件（氧气水平为 0.02 mg l-1）、有鳍鱼死亡（Nematalosa nasus）和随后的底栖生物损失。MSC 的水质恶化可能是由于人为活动、市政和工业废水排放处理不充分。大量的沉积物负荷也可能加剧了这种情况，并导致了富营养化和随后的生态系统改变。消息来源，