Data from replicate benthic chamber experiments conducted at abyssal depths across the Clarion Clipperton Zone (CCZ), Pacific Ocean

The data set includes:  oxygen optode and winkler data collected during in-situ abyssal benthic respirometer studies using benthic chamber landers deployed at multiple sites across the CCZ. Voltages measured on nodules collected from the CCZ using a high precision multimeter, and an Excel sheet showing the total O2 change as a function of nodule surface area is provided. In-situ O2 microprofiling data are also provided. Correlations between the relative abundance of specific microbial taxa (provided) and total oxygen change are also provided., The optode data was collected with O2 optodes as specified in the manuscript above. The Winkler data was collected from microwinkler titrations made on syringe samples collected by the benthic chamber lander.  Voltages were measured by a high-precision multimeter in instant ocean water.  In-situ microprofile data derived by in-situ O2 microprofiling are also provided.  Correlations between the relative abundance of specific microbial taxa (provided) and total oxygen change were undertaken based on microbial DNA sequence data provided in the NCBI link supplied in the paper.All methods are described in the manuscript noted above., , # Data collected from replicate benthic chamber experiments conducted at abyssal depths across the Clarion Clipperton Zone (CCZ), Pacific Ocean

[https://doi.org/10.5061/dryad.tdz08kq6w](https://doi.org/10.5061/dryad.tdz08kq6w)

The oxygen optode and winkler data include oxygen concentration measurements made during in-situ benthic chamber experiments at multiple sites across the Pacific Ocean.  The optodes were pre-calibrated prior to the lander experiments and made during different experimental durations (1-2 days).  The experiments were undertaken in-situ between approximately 4100-5200m depth.  The winkler data set also contains oxygen concentration data from ex-situ core incubation experiments conducted in the dark at in-situ temperature.   The voltages were measured between two points on the surface of nodules that were immersed in Instant Ocean water at two temperatures (21 and 5 degrees Celsius) using a high precision multimeter. An excel sheet showing the total oxygen change in...