Blue Carbon Accelerator
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Blue carbon is an emerging feild within marine and climate science. Seaweeds are an emerging blue carbon solution, stalled by major knowledge gaps. The blue carbon accelerator project aims to address some of these key knowledge gaps in order to assess seaweeds potential to act as a blue carbon solution into the future. The project will focus on the Ninglaoo region as an initial and adress the following are key areas. Seaweed source dynamics: Identifying the drivers of seaweed carbon drawdown in the source habitats to build a predictive model for seaweed carbon supply over space and time. This will produce a verified model of areal rates of carbon drawdown via this natural pathway. Ecosystem carbon fluxes: Quantifying the nutrient flows and seaweed carbon that support key ecosystem functions and values via major consumer pathways. This will provide a model for the environmental risks posed by additional seaweed growth for carbon sequestration Carbon transport: Tracking seaweed carbon transport from coastal to offshore settings using a novel mix of oceanographic modelling validated with in-field tracking of wrack and genetic markers. This will demonstrate the timing and extent of this passive sequestration pathway; Carbon sequestration: Demonstrating seaweed carbon storage in a deep-sea sink via models linking fluctuations in source carbon to sedimentary sequestration using stable isotopes and genetic markers (developed in 2. and 3. above). This will verify durable seaweed carbon sequestration for formal recognition as a blue carbon asset.
蓝碳(Blue carbon)是海洋与气候科学领域的新兴研究方向。海藻作为一类新兴蓝碳解决方案，却因存在诸多重大认知缺口而发展迟滞。蓝碳加速项目旨在填补其中部分关键认知缺口，以评估海藻在未来作为蓝碳解决方案的潜力。本项目将以宁拉奥（Ninglaoo）区域作为首个研究试点，重点开展以下核心研究方向： 1. 海藻源动态：明确海藻在原生栖息地的碳汇驱动机制，构建可表征海藻碳供给随空间与时间变化的预测模型，最终得到经验证的、基于该自然途径的单位面积碳汇速率模型。 2. 生态系统碳通量：量化支撑关键生态系统功能与价值的营养盐流动及海藻碳循环的主要消费者路径，进而构建用于评估额外海藻种植对碳封存带来的环境风险模型。 3. 碳迁移过程：结合海洋学建模与野外海藻残骸追踪及遗传标记技术，对海藻碳从近岸向远海的迁移过程进行追踪，阐明该被动封存途径的发生时序与影响范围。 4. 碳封存机制：结合前文第2、3部分开发的稳定同位素与遗传标记技术，构建原生碳波动与沉积物封存的关联模型，以此论证海藻碳在深海储库中的长期储存能力，最终验证海藻碳封存可作为正式蓝碳资产的可行性。
