Investigating the effect of silicate- and calcium-based ocean alkalinity enhancement on diatom silicification - data

These files contain the data recorded from a mesocosm experiment conducted in Bergen, Norway 2022 which assessed the effect of simualted mineral-based (silicate or calcium) ocean alkalinity enhancement (OAE) on diatom silicification. Ten mesocosms were used in total, divided into two groups either the silicate- or calcium based group and alkalinity was increased by either 0, 150, 300, 450 or 600 µmol L-1 above natrually occuring levels. The PDMPO-fluorescence (an appropriate proxy for silicification) of diatoms was recorded on eight seperate days during the experiment. Accompanying data includes measured; macronutrients (nitrate, nitrite, phophate, silicate), total alkalinity, biogenic silica in the water column and sediment trap.

本数据集收录了2022年于挪威卑尔根开展的中型实验生态系（mesocosm experiment）实验数据，该实验旨在评估模拟矿物基（硅酸盐基或钙基）海洋碱度增强（Ocean Alkalinity Enhancement, OAE）对硅藻硅化作用的影响。本实验共设置10个中型实验生态系，划分为硅酸盐基组与钙基组两个处理组；碱度提升幅度设置为相对于自然本底水平的0、150、300、450或600 µmol·L⁻¹。实验期间共在8个独立日期采集了硅藻的PDMPO-荧光（PDMPO-fluorescence）数据，该指标是表征硅化作用的合适替代指标。伴随数据集包含实测的大量营养盐（硝酸盐、亚硝酸盐、磷酸盐、硅酸盐）、总碱度，以及水柱与沉积物捕获器中的生物硅含量。