biocoenosis
Concise Oxford English Dictionary © 2008 Oxford University Press:
biocoenosis /ˌbʌɪə(ʊ)sɪˈnəʊsɪs/ (US biocenosis)
▶noun (pl. biocoenoses /-siːz/) Ecology an association of different organisms forming a closely integrated community.
'biocoenosis' also found in these Oxford entries:

