Sessile ciliates on artificial substrata submerged in a polluted estuary (Santos, SP, Brazil)

Abstract

Primary grohlth hlas analysed on artificial substrata submerged at three sites of the Santos estuary (State of são Paulo, BrazilJ. Research on sessile ciliates was emphasized because they hlere the most conspicuous organisms of the primary growth developed along this estuary. Zoo~harnnium ~ommun~ dominated near the headwaters of the estuary, u,here the greatest amount of suspended matter in the water was found. Ephelo~a g~m~paha dominated downstream. Although short time variability was observed in the colonization of substrata submerged on subsequent days, seasonal patterns could be determined. These patterns were characterized by a greater number of rare species of sessile ciliates, and a higher density of the most frequent ones, during spring and summer.

A comparative study of biofouling settlements in different sections of necochea power plant (quequen port, Argentina)

“…Studies have ranged from ecological analysis (e.g. Woods Hole Oceanography Institution, 1952;Marshall, 1972;Hudon & Bourget, 1981;Dempsey, 1981;Characklis & Cooksey, 1983;Cook & Henschel, 1984;Gunn et al, 1984;Pyne et al, 1984;Yanshun et al, 1984;Zongguo & Ruxing, 1984;Dexter, 1985;Eston, 1985;Brown et al, 1986) to the role played by microfouling in biodeterioration processes in marine environments (e.g. Berk et al, 1981;McCoy et al, 1981;Sasscer et al, 1981;Brown & Jones, 1982;Edyvean & Pearson, 1982;Scotto et al, 1983;Edyvean, 1984;Mollica et al, 1984;White et al, 1984;Edyvean et al, 1985;Blunn, 1986;Johnsen & Bardai, 1986;Videla et al, 1987;Dexter & Gao, 1987).…”