Ecosystem
The term ecosystem was first used in 1935 in a publication by British ecologist Arthur Tansley. Tansley devised the concept to draw attention to the importance of transfers of materials between organisms and their environment. He later refined the term, describing it as "The whole system, ... including not only the organism-complex, but also the whole complex of physical factors forming what we call the environment". Tansley regarded ecosystems not simply as natural units, but as "mental isolates". Tansley later defined the spatial extent of ecosystems using the term ecotope.
Systems theory in anthropology
British anthropologist, Gregory Bateson, is the most influential and one of the earliest founders of System Theory in anthropology. He developed an interdisciplinary approach that included communication theory, cybernetics, and mathematical logic. In his collection of essays, "The Sacred Unity", Bateson argues that there are "ecological systems, social systems, and the individual organism plus the environment with which it interacts is itself a system in this technical sense." By adding environment with systems, Bateson closes the gap between the dualities such as subject and object. "Playing upon the differences between formalization and process, or crystallization and randomness, Bateson sought to transcend other dualisms–mind versus nature, organism versus environment, concept versus context, and subject versus object." Bateson set out the general rule of systems theory. He says: