Sub-Liquid and Atmospheric Measurement Instrument To Autonomously Monitor the Biochemistry of Natural Aquatic Ecosystems Nazarious, Miracle Israel Zorzano, María Paz Martín-Torres, Javier Aquatic ecosystems Liquid-atmosphere interaction Biogeochemical cycling Long-term measurements Autonomous monitoring This development work of the SAM instrument was undertaken with the help of the University of Aberdeen’s Round 3 of the “Internal Funding to Pump-Prime Interdisciplinary Research and Impact Activities” (SF10237–59) in 2021/22 and Dr. Allan and Norma Young Foundation “Lab starting grant” (CF95052-11). M.-P.Z. was supported by grant PID2019-104205GB-C21 funded by MCIN/AEI/v10.13039/501100011033. The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsestwater.3c00082 An autonomous instrument for real-timemonitoring of lifein water in extreme environments with potential planetary applications. Monitoring the biochemistryof aquatic ecosystems is critical tounderstanding the biogeochemical cycling induced by microorganisms.They play a vital role in climate-gaseous drivers associated withnatural ecosystems, such as methane emission in wetlands and peatlands;gas cycling and fixation: methane, sulfur, carbon, and nitrogen; waterquality assessment and remediation; monitoring oxygen saturation dueto contamination and algal proliferation; and many more. Microorganismsinteract with these environments inducing diurnal and seasonal changesthat have been, to date, poorly characterized. To aid with the long-termin-situ monitoring of natural aquatic ecosystems, we designed a Sub-liquidand Atmospheric Measurement (SAM) instrument. This floating platformcan autonomously measure various sub-liquid and atmospheric parametersover a long time. This paper describes the design of SAM and illustrateshow its long-term operation can produce critical information to complementother standard laboratory-based microbiological studies. 2023-07-13T08:58:37Z 2023-07-13T08:58:37Z 2023-06-22 journal article Miracle Israel Nazarious, Maria-Paz Zorzano, and Javier Martin-Torres. Sub-Liquid and Atmospheric Measurement Instrument To Autonomously Monitor the Biochemistry of Natural Aquatic Ecosystems. ACS ES&T Water Article ASAP [DOI: 10.1021/acsestwater.3c00082] https://hdl.handle.net/10481/83658 10.1021/acsestwater.3c00082 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional American Chemical Society