Data from: Nitrogen dynamics across a natural salinity gradient in Mediterranean streams

his dataset contains water and sediment chemistry data from a microcosm experiment designed to assess inorganic nitrogen dynamics (NH₄⁺-N and NO₃⁻-N) across a natural salinity gradient in Mediterranean streams.The dataset includes measurements of nutrient concentrations, dissolved organic carbon, conductivity, and calculated net rates of nitrogen transformation under ambient and nutrient-enriched conditions.Data were collected during controlled laboratory incubations (0, 4, 24, and 48 h).The dataset supports the analyses presented in the associated manuscript submitted to Limnology and Oceanography.本数据集源自一项微宇宙实验，涵盖地中海溪流自然盐度梯度下的水体与沉积物化学数据，用于评估该环境下的无机氮动态变化（NH₄⁺-N与NO₃⁻-N）。数据集包含原位及营养盐富集条件下的营养盐浓度、溶解性有机碳、电导率测量值，以及经计算得到的氮转化净速率。数据采集自受控实验室培养实验，取样时刻分别为0、4、24与48小时。本数据集可支撑投递给《Limnology and Oceanography》的关联稿件中所呈现的分析工作。