Fig. 4

Fishing effort weighted by hook hours for the shark bottom longline fishery in A winter, B spring, C summer, and D fall in the years of 2009–2016. Overlap with the fishery and dusky shark horizontal movements is represented for E winter, F spring, G summer, and H fall. The Mid-Atlantic time–area closure for the fishery is represented by crosshatch polygons and is effective in January 1–July 31. The small overlap that occurs in the closed area when fishing is not allowed is due to the radii used in the analysis and the seasonal opening and closing of the areas to fishing. FL Florida, GA Georgia, SC South Carolina, NC North Carolina