| ecological distribution of stream macroalgal communities from a drainage basin in the serra da canastra national park, minas gerais, southeastern brazil. | twelve stream segments were sampled four times in 1998-1999 (one sampling per season) in the drainage basin of the upper são francisco river (19 masculine 45'-21 masculine 25's, 49 masculine 05'-51 masculine 30'w), situated in serra da canastra national park, at altitudes ranging from 1,175 to 1,400 m. the macroalgae survey resulted in 30 species, with a predominance of cyanophyta (12 species = 40%) and chlorophyta (11 species = 36.5%) and a lower proportion of rhodophyta (seven species = 23.5%) ... | 2004 | 15029374 |