التغيرات الفصلية للطحالب غير الدايتومية الملتصقة على الطين في موقع التقاء ذراع الثرثار بنهر دجلة شمال بغداد

الملخص EN

Seasonal variations and quality of Epipelic non-diatomic algae was conducted at the confluence of Al-Therthar arm with Tigris river, samples were collection monthly for (4 seasons) in 2016 year.

43 taxa were identified, algae belonging to 20 genus, which Cyanophyceae were dominate with (30) species, followed by Chlrophyceae 8 species, Euglenophyceae 4 and Chryptophyceae 1 specie.

Also The study able to recoded new species (Nostoc microscopicum .Carmichael) of blue- green algae to add to the of Iraqi fluora.

The results observed increase in the species belonged to Cyanophyceae in general and specially to both genus Oscillatoria and Spirulina, which shows that the study area exposed to deferens environmental stresses