Figure 14.5 Beetle herbivory on Klamath weed. Following the introduction of leaf-feeding beetles, the beetle population initially increased and the plant began a rapid decline. Once the plant population declined, the beetle population also declined.

Data from C. B. Huffaker and C. E. Kennett, A ten-year study of vegetational changes associated with biological control of Klamath weed, Journal of Range Management 12 (1959): 69–82.