Высшая водная растительность озера Берново и ее изменения за 40 лет

Abstract

Озеро Берново находится на северо-западе Белорусского Поозерья. Исследуются прозрачность воды, высшая растительность озера, зарастание и продуктивность воздушно-водной растительности за 1972 - 2012 гг. =Lake Bernovo is in the north-west of Belarusian Poozerje. Due to anthropogenic eutrophication water transparency has reduced from 2,8 m to 2 m for the last 40 years from the first study of the upper aquatic vegetation. It has lead to visible reduction of the thickets of submerged plants and as a result eutrophication of the lake has reduced from 14,7% to 11,7%. At the expense of intensified entering of biogenuos substances from water collection in the 70–90s of the XX century the lake’s, growth and productivity increased which caused the productivity growth of the upper aquatic vegetation from 21,4 to 30,4 g/m2.