Figure 1. The Sarracenia Food Web.
Each leaf of the northern pitcher plant Sarracenia purpurea contains an entire aquatic food web, with a resource base consisting of captured arthropod prey. Sarracenia occurs in Sphagnum bogs and seepage swamps throughout the eastern United States and Canada (sites at which similar species assemblages can be found [27] are shown as black dots).
(Photo Montage: Aaron M. Ellison)