РАСПРОСТРАНЕНИЕ И СЕЗОННЫЕ РАЗВИТИЕ ВИДОВ РОДА SYNEDRA EHR. В РЕКЕ САНГЗАР

20 species and varieties of the genus Synedra Ehr have been found in the Sangzor river. The development of form and a variety of order Synedra Ehr. in the river Sangzar reaches maximal degree in the summer. In the middle of the Sangzor river  there are more species and varieties of Synedra Ehr. than in upper and lower parts.

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