Papers by Ragan M. Callaway

	A cross-continental test of the enemy release hypothesis: Leaf herbivory on Acer platanoides is three times lower in North America than in its native Europe
	Biotic resistance to cheatgrass and spotted knapweed invasion in a ponderosa pine savanna: Mechanisms behind contrasting patterns
	Conditional effects of an allelopathic root exudate: The toxicity of (±)-catechin is affected by interactions with different metals
	Germination responses of an annual plant in native and non-native ranges: Environmental risk selects for bet-hedging