ABSTRACT
An ecosystem consists of the set of species living in a given space, the set of interactions among species and between species and their physical environment, and the matter and energy that flows through the species and their environment. Biodiversity is commonly perceived as a generator of this ecosystem. Nevertheless, the ecosystem is not fixed in time and its evolution is driven by the evolution of species, and also, directly or indirectly, by the impact of human activities. The agro-ecosystem is a particular ecosystem. Agro-ecosystems are influenced by agricultural practices, which result in a more simplified, artificial environment. Currently, the loss of biodiversity raises questions about how to attain more sustainable agricultural ecosystems. Answers to these questions will include an understanding of the interactions between natural species and agricultural practices.
