Phosphorus (P) is the main nutrient responsible for the harmful effects caused by the enrichment of aquatic systems, and submerged macrophytes play an important role in this process, since they can both remove and release this nutrient in environmental compartments. The present study aimed to evaluate the influence of submerged macrophytes on P in the water, sediment, and water-sediment interface in a eutrophic reservoir in a semiarid region and to evaluate the relationship between the concentration of this nutrient in macrophyte tissue and that available in the different compartments. Were performed ten collection campaigns, in three reservoir locations: at the entrance of the Paraíba River; in the intermediate area between the river entrance and the dam and at the dam. We observed a difference in the P concentration inside and outside macrophyte banks, and this difference was determined by the abundance and intensity of macrophyte growth and decomposition. In sites with extensive vegetation banks and where decomposition was more intense, macrophytes released P to the water-sediment interface and sediment compartments. By contrast, in sites with smaller vegetation banks and Ac c pte d A rtic le

中文翻译：

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半干旱区富营养化水库沉水植物对磷的影响

磷 (P) 是造成水生系统富集造成有害影响的主要营养素，沉水大型植物在此过程中起着重要作用，因为它们可以在环境隔间中去除和释放这种营养素。本研究旨在评估沉水植物对半干旱地区富营养化水库中水、沉积物和水-沉积物界面中磷的影响，并评估该营养物质在大型植物组织中的浓度与可利用的浓度之间的关系。不同的隔间。在三个水库位置进行了十次收集活动：在帕拉伊巴河的入口处；在河流入口和大坝之间的中间区域以及大坝处。我们观察到大型植物库内外 P 浓度的差异，这种差异是由大型植物生长和分解的丰度和强度决定的。在具有广泛植被库和分解更强烈的地点，大型植物将磷释放到水-沉积物界面和沉积物隔间。相比之下，在具有较小植被库和 Ac c pte d A rtic le