Planktonic desmids of three Amazonian systems (Lake Batata, Lake Mussurá and Trombetas River), Pará, Brazil

Abstract

Forty-eight taxa of planktonic desmids were recorded in 319 samples taken during one year from Lakes Batata and Mussurá and Trombetas River, State of Pará, Brazil. Thirty-eight of these are described and 33 illustrated. Staurodesmus, Staurastrum and Cosmarium were represented by more species than were other genera. The importance of desmids in Amazonian waters, previously documented in literature, is confirmed by the present study.