LBA-ECO ND-11 Stream Carbon and Nutrients, Mato Grosso, Brazil: 2003-2006

This data set contains baseflow streamwater concentrations of pH, specific conductivity, base cations, carbon (dissolved organic carbon (DOC), particulate organic carbon (POC) and bicarbonate alkalinity) and silica for four headwater streams in the seasonally dry Amazon (Johnson et al. (2006a) and Johnson et al. (2006b). Data are provided in one comma-separated ASCII file.

This hydrologic study of four headwater watersheds was conducted in an undisturbed forest near Juruena, Mato Grosso in the seasonally dry, southern Amazon. The small catchments range in size from 0.85 to 1.9 ha. Stream water samples were collected weekly during rainy seasons and biweekly during the dry seasons. Baseflow stream water concentrations of base cations, silica, electrical conductivity, DOC, and alkalinity varied inversely with discharge. While there was variation among the watersheds, the concentration-discharge patterns were consistent for each of the four watersheds. Baseflow discharge data are not included in this data set and will be archived separately.

本数据集收录了亚马逊季节性干旱地区的四条源头溪流的基流水质浓度数据，包括pH值、比电导率、碱性阳离子、碳（溶解性有机碳（DOC）、颗粒性有机碳（POC）和重碳酸盐碱度）以及二氧化硅。数据来源于Johnson等人在2006a和2006b年的研究。数据以逗号分隔的ASCII文件形式提供。

此次对四条源头流域的水文研究是在亚马逊南部干燥季节附近的Juruena，Mato Grosso的一处未受干扰的森林中进行的。这些小型流域的面积介于0.85至1.9公顷之间。在雨季期间，每周收集一次溪流水样，在旱季期间则为每两周收集一次。基流水质浓度，包括碱性阳离子、二氧化硅、电导率、DOC和碱度，与流量呈反比变化。尽管各流域之间存在差异，但四个流域的浓度-流量模式是一致的。基流流量数据未包含在本数据集中，并将另行存档。