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，但环境控制对沿海养分和其他溶质的消费，生产和转化却是沿海（通常是渗透性）的，沉积物的了解仍然很差。这种不确定性源于沿海沉积物的上限至二次的直接测量，这通常具有非常陡峭的地球化学梯度。由于许多生物地球化学物种缺乏原位传感器，因此以前无法进行直接测量。但是，新的芯片片传感器提供了分析能力，以最终解决地球化学过程，并在沿海沉积物中提供了急需的步骤变化。该项目将使用首次实验室芯片传感器来开发和测试新方法，以量化可渗透沉积物中的营养梯度和通量，并将改变我们对沿海地区关键生物地球化学过程的理解。