From April 1991 to January 1993,spatial zonation of benthic macrofauna and possible effects of sewage discharge on it in Futian mangroves were studied. It showed that,the dominant species of fauna in this swamp were from the families of Assimineidae,Melanidae, Potamididae, Ocypodidae,Grapsidae and Periophthalmidae.Spatial distribution of the community along the mangrove swamp was characterized by three faunal zones: the Assiminea nitida zone, the Melanoides sp.-Sesarma plicata zone and the Uca arcuata-Cerit...