Floristic study of Naviculaceae species (Bacillariophyceae) in inland waters of Iran.

The study of diatoms is necessary because they are the sources of oxygen in rivers, and also constitute the basic primary productivity chain and are used in determining water pollution levels. Iran is a large country with a great diversity of aquatic ecosystems including rivers, springs, seas shallow, lakes, waterfalls, lagoons, and wetlands. Despite the many types of aquatic habitats, there has been a limited study of the diatom flora. The present communication deals with the taxonomic- floristic study of family Naviculaceae with 10 genera and 181 species with emphasis to Navicula Bory genus from various rivers and lake from Iran.