Seasonal variability of fluvial organic carbon composition between 2016-2018 in the Río Bermejo, Argentina

These data were collected from the Río Bermejo in northern Argentina. To determine the seasonal variability in the particulate organic carbon composition of exported river sediment, we collected weekly suspended sediment samples (March 2016 to March 2018) at the Puente Lavalle (PLV) monitoring site, ~870 river km downstream of the mountain front (-25.655°S, -60.130°W). Surface water samples were collected from a bridge using a river-rinsed bucket and were filtered through a 0.22 µm polyethersulfone membrane. Samples were stored on site at ambient temperatures for up to one year, transferred to Germany and subsequently stored at ~4°C until processing. To document distinct sources of particulate organic carbon (POC) to the Río Bermejo, we collected 15 soil and 13 leaf litter samples from the local floodplain, and 10 bedrock (predominantly outcroppings of fine-grained sedimentary bedrock) and 2 soil samples from the Río Bermejo headwaters. […]

本数据集收集自阿根廷北部之里奥贝尔梅霍河。为探讨输出河床沉积物中颗粒有机碳组成的季节性变化，研究团队于普埃ンテ拉瓦莱（PLV）监测点（位于山前下游约870公里，南纬-25.655度，西经-60.130度）每周采集悬浮沉积物样本（时间范围为2016年3月至2018年3月）。水面水样通过桥梁上的河水冲洗桶采集，并经0.22微米聚醚砜膜过滤。样本在原地进行室温储存，最长可达一年，随后转移至德国并保存在约4摄氏度的条件下直至处理。为了记录里奥贝尔梅霍河中颗粒有机碳（POC）的特定来源，研究人员从当地河漫滩采集了15份土壤和13份叶凋落物样本，并从里奥贝尔梅霍河源头采集了10份基岩（主要为细粒沉积岩露头）和2份土壤样本。