Distribui??o espacial da meiofauna no entorno de uma plataforma de produ??o de petróleo na bacia de Santos, norte de Santa Catarina

摘要

The spatial distribution of meiofauna in the outer continental shelf of Santa Catarina was studied from samples collected around an oil production platform on the south of Santos’ Basin. A total of 14 taxa were identified. Bivalvia were the most representative in abundance, representing 47.2% of the total of individuals counted, followed by Nematoda (19,1%), Gastropoda (12,1%), Ostracoda (8,3%), Polychaeta (6,7%), and Copepoda Harpacticoida (4,3%). Others groups like Turbellaria, Oligochaeta, Kinorhyncha, Tardigrada, Tanaidacea, Aplacophora, Isopoda Gnathiidae and Acari Halacaridea were also found and represented together 1,8% of the meiofauna sampled. The total density of organisms varied from 49 ind./10 cm2 to 2 ind./10 cm2 . The community structure showed a pattern that decreased density as approaching the oil platform. Different faunal association were identified that one were characterized by the samples collected within 1000 and 3000 m from the platform and low faunal similarity within the samples collected near the oil-well.