Consumer-resource interactions play a fundamental role in all communities, be they natural or agricultural.  I will talk about how intrinsically-generated oscillations,Consumer-resource interactions play a fundamental role in all communities, be they natural or agricultural.  I will talk about how intrinsically-generated oscillations, arising from the conflict of interest between resource and consumer species influence the evolution of the functional response, and how extrinsic perturbations such as climate warming influence the dynamics and persistence of consumer-resource interactions.  I will discuss the implications of these findings for biodiversity and biological pest control.