Nutrient and carbon concentrations in dated soil cores at US-OWC Ameriflux wetland site (OWC NERR)

Soil cores were sampled at the Old Woman Creek (OWC) National Estuarine Research Reserve at the south shore of Lake Erie, near Huron, Ohio, USA. OWC is a temperate mineral soil marsh. We dated the soil cores using lead isotope analysis and measured the concentrations of carbon and nutrients (nitrogen, phosphorus) throughout the core depths. We analyzed 36 cores, sampled along three transects at areas of the wetland with different hydrological regimes. Each transect included three coring sites at different water depth categories (shallow, intermediate deep) with four core samples per coring site. The data can be used to determine the carbon sequestration rates and nutrient accumulation rates, at multiple locations throughout OWC wetland. Dataset, in csv format, with data variables in columns, and different cores and core depths slices in rows, includes results from 36 sediment cores (0-30 cm depth) taken at 9 locations (4 replicates at each location) along 3 gradients of water depth (shallow, intermediate, deep), each at a different hydrologic location (outflow, backflow, middle). At each depth slice within a core, we provide depth, date (using 210Pb), bulk density, and the concentrations of carbon, nitrogen, phosphorus, d13C, and d15N.本数据集的土壤岩心采自美国俄亥俄州休伦市附近、伊利湖南岸的老妇人溪（Old Woman Creek, OWC）国家河口研究保护区。OWC为温带矿质土壤沼泽。研究团队采用铅同位素分析法对土壤岩心进行定年，并测定了岩心全深度层的碳及营养盐（氮、磷）浓度。本次共分析36个岩心，沿三条样带在该湿地不同水文情势区域开展采样，每条样带包含3个不同水深等级（浅、中等深度）的钻取点位，每个点位采集4个岩心样本。本数据集可用于测算OWC湿地多点位的碳固存速率与营养盐累积速率。本数据集为CSV格式，列项对应各项数据变量，行项对应不同岩心及岩心深度切片，涵盖沿3个水深梯度（浅、中、深）、9个采样点位（每个点位设置4个重复样本）采集的36个0~30cm深度沉积物岩心的测定结果，各点位分属不同水文位置（出水区、回流区、中部区域）。在每个岩心的各深度切片中，记录了深度、210Pb定年结果、容重，以及碳、氮、磷浓度、d13C和d15N。