Covering more than 60% of the lake surface, macrophytes determined the taxonomic composition of phytoplankton. We have found numerous indications of ecological deterioration and an increased trophic level year to year: an increased total number of taxa; a significantly increased number of species of Chlorophyta, Bacillariophyceae and Cyanoprokaryota; a decreased number of Chrysophyceae; increas...

Two years (Jan. 2000 - Dec. 2001) data on the seasonal studies of phytoplanktonic diversity of Kitham lake (Sur Sarovar) Agra revealed the presence of 73 algal species. A limited number of these were recorded throughout the year, while others were distributed in different seasons mainly in winter and summer seasons. During winters, Chlorophyceae was the most dominant group followed by Bacillari...

We report on exquisitely preserved specimens of freshwater siliceous algae belonging to the classes Synurophyceae (scaled chrysophytes) and Bacillariophyceae (diatoms) from middle Eocene lake sediments in Northern Canada. When considered in the context of closest extant relatives, these microfossils present unequivocal biogeographic and ecological affinities with warm-water ochrophyte assemblag...

Besides ultrastructural and biochemical characteristics, thallus color, which is due to antenna pigments of the photosynthetic apparatus, is one of the major distinguishing criteria in the classification of algae, finding its reflection in the likes of cyanoprocaryota, rhodophyta, chlorophyta, xanthophyceae, chrysophyceae, or phaeophyceae. The majority of past studies on algal pigments, however...

The purpose of this study was to investigate the distribution and biodiversity of diatoms during different seasons and their correlation with water quality parameters in Helleh River estuary, Bushehr, Persian Gulf. Samples were taken in mid-season from summer 2011 to spring 2012 during a one-year period from different stations. Results showed that diatoms mostly comprised of Bacillariophyceae, ...