Fig. 3. Cross-shelf contours of near-bottom water hypoxia (dissolved oxygen <2 mg L^-1 in stippled and <1 mg L^-1 in black) for Transect C (Fig. 1) across the southeastern Louisiana shelf at monthly intervals in 1992 and 1993 for dates indicated. Data from hypoxia studies of N.N. Rabalais, R.E. Turner, and W.J. Wiseman, Jr