Seawater carbonate chemistry and marine macrophyte capacity to locally ameliorate ocean acidification under variable light and flow regimes

We explored the individual capacities of four species of marine macrophytes (Ulva lactuca, Zostera marina, Fucus vesiculosus and Saccharina latissima) to ameliorate seawater acidity in experimentally elevated pCO2. We also used the most responsive species (i.e., S. latissima) to assess the effects of high and low water residence time on the amelioration of seawater acidity in ambient and simulated future scenarios of climate change across a gradient of irradiance.

本研究探究了4种海洋大型海藻——石莼（Ulva lactuca）、大叶藻（Zostera marina）、泡囊岩藻（Fucus vesiculosus）及糖海带（Saccharina latissima）——在实验性升高的CO₂分压（pCO₂）条件下缓解海水酸化的个体能力。此外，本研究选取响应效果最佳的物种（即糖海带），在不同光照梯度下，结合背景气候与模拟的未来气候变化情景设置高、低两种水停留时间，以此评估水停留时间对海水酸化缓解效果的影响。