Variaˋˋo sazonal dos grupos funcionais fitoplanctˋnicos em braˋos de um reservat車rio tropical de usos m迆ltiplos no estado de Sˋo Paulo (Brasil)

作者：Cunha; Davi Gasparini Fernandes; Calijuri; Maria do Carmo

来源：Acta Botanica Brasilica, 2011.

DOI：10.1590/S0102-33062011000400009

• sorocaba river watershed
• phytoplankton community
• eutrophication
• water resources
• lentic systems.

the assessment of phytoplankton functional groups may help water resource management, considering the multiple uses of this resource type. this research investigated the seasonal variation of these groups in the itupararanga reservoir (sp, brazil). four arms of the reservoir were sampled to determine the water temperature, ph, underwater photosynthetically active radiation (par), turbidity, total phosphorus, nitrate and total suspended solids (tss), besides qualitative and quantitative aspects of the phytoplankton community and meteorological data. the study was carried out in august and october 2009, and in february 2010, and suggested there is seasonal variation of phytoplankton groups (p*1000 米e m-2 s-1) were relevant in the summer. considering the environmental variability of the arms of the reservoir (derived from the influence of tributaries), and the dominance of phytoplankton groups typical of eutrophic environments, we recommend continuous monitoring of this area so that different water uses can continue, particularly for supply and recreation.