Nutrient and Discharge in the Brush Creek Watershed in Northwest Arkansas

This dataset supports the Quantifying Ecosystem Losses across Dimensions of Space and Time (QuEST) project investigating nutrient dynamics under baseflow conditions in an agricultural non-perennial stream in a rural heterogenous landscape dominated by pasture/hay and forest area in Northwest Arkansas. This data includes monthly spatially intensive baseflow sampling of 20 sites nested across Brush Creek from October 2023-September 2024 for nitrate (NO3-N), soluble reactive phosphorus (SRP), discharge (Q), and flow state (F=flowing, P=pooled, D=dry). The interactive effects of agricultural land use and stream intermittency are understudied and thus makes our findings important in developing targeted management approaches as flow variability increases.本数据集支持时空维度生态系统损失量化（Quantifying Ecosystem Losses across Dimensions of Space and Time, QuEST）项目。该项目聚焦美国阿肯色州西北部以牧场/干草田与林地为主要土地利用类型的乡村异质景观，研究其中农业区间歇河流在基流条件下的营养盐动态变化。本数据集包含2023年10月至2024年9月期间，对嵌套于布拉什溪（Brush Creek）的20个监测位点开展的月度空间密集型基流采样数据，检测指标涵盖硝酸盐（NO3-N）、可溶性活性磷（SRP）、流量（Q）以及流态（其中F代表流动状态、P代表滞水状态、D代表干涸状态）。目前针对农业土地利用与河流间歇性的交互效应的研究仍较为匮乏，因此在流量变异性日益加剧的背景下，本研究成果可为制定针对性流域管理方案提供重要支撑。