Monthly beetle abundance and beetle species richness patterns.

<p>Monthly changes in a, b) beetle abundance (ind m⁻² day⁻¹) and c) beetle species richness at four different depths (0, 0.1, 0.6, and 1.1 m), and at five distances across a large gravel bar (1, 5, 20, and 60–100 m distance from the channel margin, and at the edge of the riparian forest). Data are monthly means +/− SE.