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Is the southeastern Adriatic Sea coastal strip an eutrophic area?

机译:东南亚得里亚海沿海地带是富营养化地区吗?

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This study intends to understand and assess the effects of the discharge from the Buna/Bojana river delta watersheds on the eutrophic status of the southeastern Adriatic Sea, and contrast this area with the northwestern Adriatic region where the Po River dominates the freshwater discharge into the coastal ocean. We compare observations of inorganic nutrients, turbidity, and physical variables from the two regions and use numerical model results to characterize the physical circulation of the two areas.rnThe area affected by the Po River discharge extends at least one hundred kilometers southward from the delta and approximately 20 km offshore. Maximum chlorophyll concentrations typically occur within the river plume. Similarly, in the southeastern Adriatic Sea, the Buna/Bojana River discharge extends northward along the coasts for approximately one hundred kilometers and contains a large maxima in the regional chlorophyll distribution. The two coastal areas tend to have opposing physical forcing processes: the Po River tends to be affected area by northerly to northeasterly winds that cause downwelling, whereas the Buna/Bojana River on the opposite side of the basin is typically characterized by northerly, upwelling favorable winds. However, during the study period, upwelling is not a dominant feature of the circulation and both the shelf slope current (SouthEastern Adriatic - SEAd current) and the along shore currents in the southeastern Adriatic Sea are northward. The along shore current probably dominated by the river runoff is here described for the first time and called the southeastern Shelf Coastal (SESC) current.rnUnder these conditions, primary productivity is high in both regions leading us to conclude that river plume dynamics and the associated nutrient inputs determine the eutrophication status of the coastal strip, regardless of the circulation regime in the southeastern Adriatic Sea area. The Adriatic southeastern coastal area is an eutrophic area that is strongly affected by freshwater inputs particularly from the Buna/ Bojana River system.
机译:这项研究旨在了解和评估布纳/博雅纳河三角洲流域的排放物对东南亚得里亚海的富营养化状况的影响,并将该地区与西北亚得里亚海地区(波河占淡水排放到沿海的主要地区)进行对比。海洋。我们比较了这两个地区的无机养分,浊度和物理变量的观测结果,并使用数值模型结果来表征这两个地区的物理环流。the河排放量影响的地区从三角洲和南部至少延伸了一百公里。离岸约20公里。最大叶绿素浓度通常发生在河羽内。同样,在亚得里亚海的东南部,布纳河/博贾纳河河水沿海岸向北延伸约一百公里,并在区域叶绿素分布中包含很大的最大值。这两个沿海地区趋向于相反的物理强迫过程:波河往往受到北风到东北风的影响而引起下沉,而该盆地对岸的布纳/博贾纳河的特征通常是北上,有利于上涌风。但是,在研究期间,上升流不是环流的主要特征,而架子坡流(东南亚得里亚海-SEAd流)和东南亚得里亚海的沿岸流都向北。本文首次描述了可能由河流径流主导的沿岸潮流,称为东南陆架沿海(SESC)潮流。在这种情况下,两个地区的初级生产力都很高,这使我们得出结论:河流羽流动力学及其相关因素营养物质的投入决定了沿海地带的富营养化状况,而与东南亚得里亚海地区的循环方式无关。亚得里亚海东南沿海地区是一个富营养化地区,受到特别是来自布纳/博贾纳河系统的淡水输入的强烈影响。

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