A biocoenosis (alternatively, biocoenose or biocenose), termed by
Karl Möbius in 1877, describes all the interacting
organisms living together in a specific
habitat (or
biotope). Biotic community, biological community, and ecological community are more common synonyms of biocenosis, all of which represent the same concepts. Two additional words coined by analogy are zoocoenosis for the faunal community and phytocoenosis for the floral community within a biotope. The extent or geographical area of a biocenose is limited only by the requirement of a more or less uniform species composition . An
ecosystem, as originally defined by Tansley (1935), is a biotic community (or biocoenosis) along with its physical environment (or
biotope as defined by many known ecologists).
See more at Wikipedia.org...