Comprehensive understanding of marine ecosystems and biogeochemical cycles is fundamental to elucidating climate change dynamics and enhancing oceanic carbon sinks, representing a frontier in contemporary scientific inquiry. However, current research is hindered by critical challenges, notably the scarcity of multidisciplinary platforms capable of synchronous spatiotemporal observation and experimentation, the​ limited accuracy of biogeochemical rate measurements, and the​ inconsistencies arising from heterogeneous​ particulate matter sampling methodologies.
To overcome these limitations, we developed an integrated innovation system that synergizes in situ incubation for biogeochemical rate quantification with automated sampling and preservation modules. The system is equipped with >30 filtration and fixation units and two 2-L incubation chambers, and has a maximum working depth of >500 meters. The effects​ of pressure on POM and Chl-a measurements were evaluated using representative phytoplankton species to define the upper pressure limit​ for sample filtration. We aim to integrate this system into a novel long-range AUV featuring adaptive sampling. This integrated platform​ will yield high-fidelity, in situ BGC rate measurements while preserving sample integrity and autonomously tracking biological hotspots.
 

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