2.4 Cyanobacterial Fossils.................................................. 22 2.4.1 Filamentous Cyanobacteria ............................................ 22 2.4.1.1 Oscillatoriaceae .............................................................. 22 2.4.1.2 Nostocaceae .................................................................... 24 2.4.2 Coccoid and Ellipsoid Cyanobacteria ...............

Microplastic pollution is widespread around the world and inevitably comes into contact with organisms. With accumulation of microplastics in environment, negative impact on organisms has become main focus field microplastics. In this study, different particle concentration effects fluorescent polystyrene (PS-MPs) Nostocaceae Daphnia Magna were researched. The results indicate that PS-MPs adher...

Microbial communities found in arid environments are commonly represented by biological soil crusts (BSCs) and endolithic assemblages. There is still limited knowledge concerning endoliths BSCs occurring the cold mountain desert of Pamir. The aim study was to investigate composition structure bacterial comparison surrounding three subregions Eastern Pamir (Tajikistan). BSC were studied using cu...

Four paddy fields in Guilan province in the north of Iran seasonally were sampled from April 2008 to January 2009. Twenty-two morphospecies belonging to three families of the heterocystous blue-green algae were identified. Fourteen species and one variety of these taxa are new record for Iran. Among the families Nostocaceae with six genera and 16 species showed the highest species richness.