Marine diatoms from Buenos Aires coastal waters (República Argentina). I. Thalassiosiraceae
Sar, Eugenia A.; Sunesen, Inés; Castaños,
This study describes the diversity of the species belonging to the diatom family Thalassiosiraceae found in the temperate marine waters along the coast of Buenos Aires Province, Argentina, from October 1994 to January 1999. It comprises morphological, taxonomic and distributional analyses of species found in samples collected at San Clemente del Tuyú, Santa Teresita, La Lucila del Mar, Mar de Ajó, Nueva Atlantis, Pinamar and Villa Gesell. A list of Thalassiosiraceae previously reported from Argentinian coastal waters, but not encountered in the present study, is also provided. Twenty-five taxa of the genus Thalassiosira and other related genera, excluding Cyclotella, were identified. Thalassiosira binata Fryxell, T. lundiana Fryxell, T. oestrupii var. venrickae Fryxell & Hasle, T. proschkinae Makarova and Porosira pentaportula Syvertsen & Lange are new records for Argentina and for the Southwestern Atlantic Ocean.