Flora and Vegetation of Lake Shevino

• Main Authors: Мержвинский, Л.М., Мартыненко, В.П.
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Витебский государственный университет имени П. М. Машерова 2020
• Subjects: Lake Shevino; flora; higher aquatic vegetation; macrophytes; phytocenosis; association; overgrowth; productivity; product; озеро Шевино; флора; высшая водная растительность; макрофиты; фитоценоз; ассоциация; зарастание; продуктивность; продукция; dvina
• Online Access: https://journals.vsu.by/index.php/vestnikvgu/article/view/525

Higher aquatic vegetation along with phytoplankton is the main producer of the primary product of lake ecosystems. Higher aquatic plants are the natural indicator of the anthropogenic impact on lakes. A list of the flora and the geobotanical characteristic of higher aquatic vegetation of Lake Shevino is presented in the article. The aim is to study is the flora and the higher aquatic vegetation of Lake Shevino, identify characteristic features of the Lake vegetation and the degree of overgrowth, annual product and productivity of macrophytes, draw up a map of the Lake vegetation. Material and methods. Lake Shevino is located 16 km west from the City of Vitebsk in Vitebsk District. It belongs to the Shevinka River (a Western Dvina tributary) basin. The Shevinka River flows through the Lake. It flows into it as the Zaronovka River. The Uzhnitsa River flows into the Lake in the south-east, which connects it with Lake Letsi. According to O.F. Yakushko complex classification Lake Shevino is of eutrophy type. The study of higher aquatic vegetation was conducted in August 2013. The well known methods by I.M. Raspopov and V.M. Katanskaya were used in the study. Data were entered into higher aquatic vegetation description forms. A scheme of the lake overgrowth and a chart of associations and productivity, their area in the water body as well as the product are made up. Findings and their discussion. It was found out that higher aquatic vegetation of Lake Shevino is formed by 31 plant species, which make up 13 vegetation associations and two strips of overgrowth. Low water transparency prevents from the formation of a strip of Chara weed and the strip of wide leaf rhdests is represented by fragments. Higher aquatic vegetation takes up 6,45 hectares or 17% of the Lake area. Due to low water transparency biggest area in the Lake is taken not by submersed but by air and aquatic vegetation, 3,38 hectares, which makes up 60% of the area of the whole Lake vegetation. Vegetation with floating on the surface leaves takes up 2,0 ...