The past two decades have witnessed a resurgence of ecological ideas and ecological thinking in discussions of urbanism, society, culture and design. In science, the field of ecology has moved away from classical determinism and a reductionist Newtonian concern with stability, certainty and order, in favor of more contemporary understandings of dynamic systemic change and the related phenomena of adaptability, resilience and flexibility. Increasingly these concepts are seen as useful heuristics for decision-making in many fields, and as models or metaphors for cultural production, particularly in the design arts. This places landscape architecture in a unique disciplinary and practical space — informed by ecological knowledge as an applied science, as a construct for managing change, and as a model of cultural production or design.
Ecology is, by definition, a transdisciplinary science focused on the relationship between living organisms and their environments. A relatively new science, its modern roots emerged in the early 20th century with the work of Frederic Clements and Henry Gleason, American botanists who studied the interactions between plant communities, and Sir Arthur Tansley, a British botanist and zoologist whose research on the interactions between plant and animal communities and the environment led him to coin the term “ecosystem” in 1935.  The interdisciplinary work of these pioneers prompted the development of models of ecological succession that dominated plant biology during the early 20th century and became the basis for the new integrated science of plants, animals and the environment eventually known as ecosystem ecology.