EFFECTS of ARTIFICIAL SUBSTRATE TYPES and EXPOSURE TIME on MACROALGAL COLONIZATION IN A TROPICAL STREAM - Branco, C. Z. [UNESP]; Carvalho, G. J. A. [UNESP]; Emed, R. G. [UNESP]; Peres, C. K. [UNESP] (Int Phycological Soc, 2009)