Former Harvard Forest Bullard Fellow Elizabeth Farnsworth and Harvard Forest Senior Ecologist Aaron Ellison examine scaling relationships among leaf traits of 10 species of pitcher plants (Sarracenia species) fed different quantities of insect prey. Increased prey availability increased photosystem efficiencey (as expressed by the ratio of Fv/Fm), chlorophyll content, and photosynthetic rate. It also led to a shift from P-