The Matusagaratí Wetland in the Panamanian Darien develops in fluvial environments associated with the Tuira River. The aim of this research is to determine the origin and dynamics of the water flows that sustain the Matusagaratí Wetland, studying the flows of surface water and groundwater, as well as the contributions derived from precipitation. Understanding the contributions and flows of water within the wetland acquires both hydrological and ecological significance, since flood events contribute to the accumulation of sediments and the transport and dispersal of seeds and fish larvae, playing an important role in the wetland ecosystems and vegetation variability. A monitoring network was designed as perpendicular transects to the Tuira River, encompassing wetland environments with different geomorphology and vegetation. Water flows were studied from the measurement of water levels and sampling in the Tuira River, in groundwater and in streams that drain from Filo del Tallo, also evaluating the influence of rainfall. In addition, the origin of the different sources of water that enter the wetland was assessed using stable water isotopes. The analysis show that different hydrodynamic behaviours exist along the river associated with the levee and floodplain sectors. The dynamics of the water in the Tuira River is determined by the runoff of excess rainfall, which is overlaid by a tidal regime resulting from the propagation of the tide from the estuary. This propagation causes variations in salinity along the river. The study of groundwater levels, water levels in the Tuira River and rainfall, supported by stable isotopes, allowed the identification of different environments, some of which depend mainly on the water contribution of the Tuira River, others on rainwater, and others where the contribution of water to the wetland is mixed. The results presented in this research contribute data to the generation of hydrological baseline for the understanding of the hydrological functioning of the wetland and the generation of management guidelines against the advance of anthropic activities that can modify it.

巴拿马达里安的马图萨加拉蒂湿地发育在与图伊拉河相关的河流环境中。这项研究的目的是确定维持 Matusagaratí 湿地的水流的起源和动态，研究地表水和地下水的流动，​​以及降水的贡献。了解湿地内水的贡献和流动具有水文和生态意义，因为洪水事件有助于沉积物的积累以及种子和鱼类幼虫的运输和扩散，在湿地生态系统和植被变化中发挥着重要作用。监测网络被设计为与图伊拉河垂直的横断面，包括具有不同地貌和植被的湿地环境。通过测量 Tuira 河、地下水和从 Filo del Tallo 排出的溪流中的水位和采样来研究水流，同时评估降雨的影响。此外，使用稳定的水同位素评估了进入湿地的不同水源的来源。分析表明，与堤坝和洪泛区相关的河流沿线存在不同的水动力行为。图伊拉河中水的动态取决于过量降雨的径流，该径流被河口潮汐传播所产生的潮汐状况所覆盖。这种传播导致沿河的盐度变化。在稳定同位素的支持下，研究地下水位、图伊拉河的水位和降雨量，允许识别不同的环境，其中一些主要取决于 Tuira 河的水贡献，其他取决于雨水，还有一些水对湿地的贡献是混合的。本研究中提供的结果为水文基线的生成提供了数据，以了解湿地的水文功能，并针对可以修改湿地的人为活动的进展制定管理指南。