Biogeochemical cycling in the critical coastal zone: Developing novel methods to make reliable measurements of geochemical fluxes in permeable sedimen

关键沿海地区的生物地球化学循环：开发新方法来可靠测量可渗透沉积物中的地球化学通量

• 批准号: 2892737
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2892737
• 关键词: Biogeochemical; cycling; critical; coastal; zone

Despite the importance of this part of the ocean, the environmental controls on the consumption, production and conversion of nutrients and other solutes in coastal, often sandy (permeable), sediments remain poorly understood. This uncertainty arises from a paucity of direct measurements in the upper centimetre-decimetre of coastal sediments, which often feature very steep geochemical gradients. Direct measurements have not been possible previously due to a lack of in-situ sensors for many biogeochemical species. However, new Lab-on-Chip sensors provide analytical capabilities to finally resolve geochemical processes and provide a much-needed step change in coastal sediment understanding. This project will develop and test novel methods using for the first time Lab-on-Chip sensors to quantify nutrient gradients and fluxes in permeable sediments and will transform our understanding of critical biogeochemical processes across coastal zones.

尽管这部分海洋很重要，但对沿海沉积物（通常是沙质（可渗透））中养分和其他溶质的消耗、生产和转化的环境控制仍然知之甚少。这种不确定性是由于缺乏对沿海沉积物上层厘米-分厘米的直接测量，这些沉积物通常具有非常陡峭的地球化学梯度。由于缺乏许多生物地球化学物种的原位传感器，以前无法进行直接测量。然而，新的片上实验室传感器提供了分析能力，最终解决地球化学过程，并为沿海沉积物的理解提供了急需的阶跃变化。该项目将开发和测试首次使用片上实验室传感器来量化可渗透沉积物中的营养梯度和通量的新方法，并将改变我们对沿海地区关键生物地球化学过程的理解。