| abundance and diversity of phytoplankton in the paraná river (argentina) 220 km downstream of the yacyretá reservoir. | patterns in the temporal composition, abundance and diversity of the phytoplankton community of the paraná river prior to and after the initial filling phase of the yacyretá reservoir are analyzed. the study site is located 220 km downstream from the yacyretá reservoir and 30 km downstream from the confluence with the paraguay river. because both rivers remain separate and unmixed at the study site, we compared the possible effects of the impoundment on both river banks (left and right banks) in ... | 2007 | 17505750 |