Fig. 3.
Cross-correlation coefficients (rXCF) of oxygen concentration versus macroscopic particles (>500 μm; video), and oxygen concentration and optical backscatter (obs). (A–D) Upper 2,000 m of the water column. (E–G) Deep sea >2,000 m. (B, D, F, and H) Means of cross-correlations of all stations with standard deviations (bars). Asterisks are negative cross-correlations between oxygen and macroscopic particles that exceeded those between oxygen and optical backscatter. All cross-correlation coefficients were significant at α = 0.05 as determined by randomizations, except those marked with ns. Triangles indicate two instances in which the presence of a deep nepheloid layer may have influenced the outcome of the cross-correlation analysis.