Trends in habitat complexity and fish abundance in Lake St. Clair. Abundance (± SE) of a African jewelfish (circles), b juvenile bluegill (circles) and eastern mosquitofish (triangles), and c adult bluegill (circles) and largemouth bass (triangles) in visual transects across years in Lake St. Clair, Florida. Scales for fish abundance vary by panel. Mean habitat complexity (± SE; bars) across years is on the secondary y-axis (0 = absent, 1 = <33% coverage, 2 = 33–66% coverage, and 3 = >66% coverage). African jewelfish abundance is number per transect. Abundance for juvenile bluegill and eastern mosquitofish is on a categorical scale (0 = absent, 1 = 1–19, 2 = 20–99, and 3 = 100 or more observed per transect). Abundance for adult bluegill and largemouth bass is on a categorical scale (0 = absent, 1 = 1–5, and 2 = 6 or more observed per transect)