FIGURE 3. Population recovery of marine fishes 10 (upper panel) and 15 years (lower panel) after the greatest proportionate 15-year decline experienced by each stock.
From the following article:
Collapse and recovery of marine fishes
Jeffrey A. Hutchings
Nature 406, 882-885(24 August 2000)
doi:10.1038/35022565
The dashed and solid lines represent the 'full recovery' and 'no recovery' lines, respectively. The families corresponding to each symbol are those given in the caption to Fig. 1. a, 10 years; b, 15 years after decline.