Supporting data for "Sulfur geochemistry impacts population oscillations of wild rice (Zizania palustris)"

Wild rice populations decline with exposure to elevated sulfate due to production of sulfide in anoxic sediment. Using self-sustaining wild rice mesocosms, we collected data on the population response to sulfate, as well as iron and litter, which both may modify the production and availability of sulfide to plants. Wild rice also experiences natural population oscillations due to delays in release of nitrogen from decomposing litter. We use this data to investigate how sulfate-induced population declines interact with stable litter-driven population cycles. Population data was collected 2014-2019, and geochemical data (iron, sulfide, pH) was collected in 2019, after 5 years of of a factorial design treatment (sulfate, iron, litter).

野生稻种群数量会因暴露于高浓度硫酸盐而下降，这是由于缺氧沉积物中产生了硫化物。利用自维持野生稻中型实验系统（mesocosms），我们收集了种群对硫酸盐的响应数据，以及铁和凋落物的数据——这两者均可能改变硫化物的产生及其对植物的可利用性。野生稻还会因分解凋落物释放氮的延迟而经历自然的种群波动。我们利用这些数据研究硫酸盐诱导的种群下降如何与稳定的凋落物驱动种群周期相互作用。种群数据收集于2014-2019年，地球化学数据（铁、硫化物、pH值）则在5年析因设计（factorial design）处理（硫酸盐、铁、凋落物）后于2019年收集。