АЛЬГОФЛОРА РЕКИ АХАНГАРАН

Аннотация

Subjects of research: algoflora of the Akhangaran river. Purpose of work: to study algoflora of the Akhangaran river and define the value of indicator saprobic species of algae estimating ecological and sanitary condition of the water reservoir of the Akhangaran river. Methods of research: algological and hydrobiological. The results obtained and their novelty: first, it has been studied in details and established species composition of algoflora of the Akhangaran river. Systematic analysis of algoflora of the Akhangaran river showed that 210 species revealed (188 species, 12 diversities, 10 forms) arc referred to 61 genera, 36 families, 17ordcr-types and 6 divisions of algae. On basis of comparative analysis of algoflora of the Akhangaran river with algoflora of studied by us natural and artificial reservoirs of Central Asia general species of algae have been determined. There studied propagation and distribution of algae downstream, seasonal changes and the effect of various ecological factors of water environment. For the first time, index of saprobc (Si) has been calculated as a result of studying of indicator saprobc species and diversities, and on the basis of this, the estimation of water quality has been given and ecologic zones of the river have been determined. Practical value: species composition of algoflora has been determined and their distribution downstream. Saprobc indicator algae and their index of water saprobc have been revealed. For the reason ecological sanitary condition of the river has been established. Obtained results have practical value in composition and comparative study of algoflora of algae of Uzbekistan and other regions of Central Asia. Indicator algae and their indices could be useful in identification of ecological zones of water reservoirs. Degree of embed and economic effectivity: study results arc used in academic process at the department “Ecology” NUUz (act № 954 dd 10.11.2009), as well as in practical work of State Committee on nature protection of Republic of Uzbekistan (act № 6 dd 12.12.2009). Field of application: science and education: biology, ecology; ecological-sanitary control and protection of nature.