Figure 4
Maps of near-bottom dissolved oxygen over time. Data from 1950 to 1980 are from the World Ocean Database32, data from 2009–2018 are from the NOAA Groundfish survey, and data from 2021 are from this study. Maps created with the Gri scientific graph language (Version 2.12.23, https://gri.sourceforge.net/index.php).
