A time-integrated sediment trap to sample diatoms for hydrological tracing

Here, we explore the potential for the Phillips sampler to provide a representative sample of the diatom assemblage of a whole storm run-off event. We addressed this by comparing the diatom community composition of the Phillips sampler to the composite community collected by the automatic samplers. As a control, we also checked if the particle size distribution of the suspended sediment collected by the Phillips sampler was similar to the composite distribution collected by the automatic sampler. We consider automatic samplers as sampling fully representative samples of a storm run-off event. The dataset contains relative diatom abundances (%) after applying the cut-off criteria of 1% and results of indicator variables and diatom indices per sample. Diatom biovolume and ecological guilds per taxa are also provided. Furthermore, measurements of discharge, turbidity, suspended sediment concentration (SSC) and particle size distribution (PSD) are given. The results of PSD are given as provided by the software. For more information we refer to the manual of the LISST 200X.本研究旨在探究菲利普斯采样器（Phillips sampler）能否采集得到整场暴雨径流事件中硅藻群落的代表性样本。为此，我们将菲利普斯采样器获取的硅藻群落组成，与自动采样器采集的复合群落样本进行对比分析。同时设置对照实验，验证菲利普斯采样器采集的悬浮沉积物粒径分布，是否与自动采样器获取的复合粒径分布一致。本研究将自动采样器采集的样本视为暴雨径流事件的全代表性样本。本数据集包含经1%截断阈值处理后的硅藻相对丰度（%），以及各样本的指示变量与硅藻指数结果；各分类单元的硅藻生物体积与生态功能群信息亦一并提供。此外，数据集还收录了流量、浊度、悬浮沉积物浓度（SSC）与粒径分布（PSD）的实测数据，其中粒径分布结果以对应配套软件的输出格式呈现，如需进一步了解细节可参考LISST 200X仪器使用手册。