Hydrodictyaceae (Chlorophyceae, Chlorophyta) do Pantanal dos Marimbus, Chapada Diamantina, Bahia, Brasil

Abstract

This study is a floristic survey of the family Hydrodictyaceae where were found nine taxa distributed in fi ve genera: Lacunastrum H. McManus, Pediastrum Meyen, Sorastrum Kütz., Stauridium Corda and Tetraedron Kütz. The taxa were recorded from 104 samples (periphyton and plankton) collected in two areas of the Pantanal swamp (Baiano and Remanso), belonging to the Environmental Protection Area Marimbus-Iraquara, Chapada Diamantina, Bahia, Brazil, during the dry season (April, June and August 2011) and rainy season (October, December 2011 and February 2012). The geographic distribution of six taxa (Pediastrum angulosum (Ehrenb.) Menegh, P. argentinense Bourr. & Tell, Sorastrum americanum (Bohlin) Schmidle, S. spinulosum Nägeli, Tetraedron caudatum (Corda) Hansg., T. minimum (A. Braun) Hansg. is extended to Northeast Brazil.