Annelids polychaets from the infralittoral zone of two bays in Ubatuba: II. ecological aspects

Abstract

The populations of polychaetous annelids from the shallow infralittoral were analyzed for their composition and relationships with environmental parameters. As suggested by a previous survey, the area was divided in five sectors, according to local peculiarities. Some factors as the nature of sediments and abundance of organic matter have a selective function and seem to play an important role conditioning the degree of faunistic affinity between the different sectors.