Page 0: Page 1: Ecosystem The study of ecosystems mainly consists of the study of certain processes that link the living, or biotic, components to the nonliving, or abiotic,Ecosystem Energy components. transformations and biogeochemical cycling are the main processes that comprise the field of ecosystem ecology. As we learned earlier, ecology generally is defined as the interactions of organisms with one another and with the environment in which they occur. We can study ecology at the level of the individual, the population, the community, and the ecosystem. Page 2: