Lotic Intersite Nitrogen eXperiment I (LINX1): Stream nitrogen (N) dynamics in streams on the eastern side of Puerto Rico

This study was part of the Lotic Intersite Nitrogen eXperiment (LINX); a series of identical 15NH4 tracer additions to streams throughout North America. 15NH4Cl was added at tracer levels to a Puerto Rican stream for 42 days. Samples were collected from selected food web and dissolved nitrogen compartments throughout the addition and for several weeks afterwards to determine the uptake, retention and transformation pathways of nitrogen in the stream.

本研究属于流水生境跨站点氮素实验（Lotic Intersite Nitrogen eXperiment，LINX）的组成部分，该实验是在北美全境溪流中开展的一系列统一的15NH4示踪剂添加实验。研究人员以示踪剂量级向波多黎各的一条溪流投放15N标记氯化铵（15NH4Cl），持续时长共计42天。在示踪剂添加全程及后续数周内，研究人员从选定的食物网组分与溶解态氮组分中采集样本，以探明溪流生态系统中氮素的摄取、滞留与转化路径。