عنوان مقاله [English]
نویسندگان [English]چکیده [English]
The aim of this study was estimate of biodiversity, density and frequency of green-blue algae community of warm water fish ponds in Gonbade kavous city at east of Golestan Province. Sampling act was done during one culture period from June to November 2011. The results obtained during the research period, 10 different genuses were identified. From statistical aspect, there is no significant differences between means density of different months, ponds and seasons observed (P>0.05). Generally, the highest and lowest frequency percent between identified genuses belongs to Merismopedia sp and Anabaenopsis sp with 20 and 1 % respectively. The based on correlation coefficient analysis between green-blue algae community density and water physico-chemical parameters show that total density means of green-blue algae community had high and significant correlation with water temperature parameter -0.858. Other water physico-chemical parameters had no correlation relative with green-blue algae community. The results show that density changes of green-blue algae community of east of Golestan province, Gonbade kavous city fish ponds affected by environment parameters such as water temperature and culture fishes.