Progressive and Regressive Algae of the Genus Navicula Bory (Bacillariophyta) of Water Bodies of the Chirchik River Basin (Uzbekistan) and Protecshion

Abstract

In the article, the authors present for the first time the progressive and regressing algae of the genus Navicula Bory (Bacillariophyta) in the water bodies of the Chirchik River basin. The research was carried out during 2005-2012, 2018-2020 yy. with the National Universities of Uzbekistan and the Institutes and Botany of the Academy of Sciences of the Republic of Uzbekistan. 122 species and varieties of algae of the genus Navicula Bory have been identified. Among them, new species for water bodies, saprobic indicators were noted, the seasonality of algae was studied. The main new ideas in the article are as follows: among the algae found, it is progressive algae 6. They are found "often", "very often", "in mass or mass" in one field of view of the objective, their frequency of occurrence is equal to 5, 7, 9 points and is considered a resistant species in various environmental conditions, being a promising algae with full life. 96 - less progressive algae, occurs "often", "rarely", the occurrence is equal to 5, 3 points and is less resistant and less promising algae with a sex life. 20 species and varieties are regressing algae, in water bodies it meets only "units" (single), the frequency of occurrence is equal to 1 (one) point and is considered unstable algae of the investigated water bodies, in the future, there is a threat to safety and Not Live! (No Life!) Needs protection. It was proposed to include in the next issue of the "Red Book" of the Institute of Botany of the Academy of Sciences of the Republic of Uzbekistan, as well as to accept and include in the list of protected microorganisms water bodies of Uzbekistan under the Committee for Ecology and Nature Protection of the Republic of Uzbekistan.