This talk addresses the use of the ecological notion of response diversity (Elmqvist Et al. 2003) as a frame to develop coupled natural-artificial systems. It does so through the practice of design, making explicit the type of performativity that design proposals could enact by devising complementary responses designed to support the life of specific beings in specific ecosystems. The talk elaborates upon examples from the project Dispersal machines, part of my postdoctoral research entitled Symbiotic tactics and financed by the Swedish Research Council (2013-2016). Dispersal machines proposes two complementary artificial systems that attempt to minimise the damages by a moth (Spodoptera frugiperda) on crops (corn and soy predominantly) in the agroecosystems of Córdoba, Argentina. The proposals attempt to biologically control this species by interventions that disseminate and/or host species that predate or parasitize the moth at different stages of its life cycle: a diurnal response, based on the dissemination of parasitized eggs of the moth by a tiny wasp (Telenomus remus), as well as a nocturnal response, based on the placement of bat refuges that feed on the adult moth.