Klepets O. Structural features of higher aquatic vegetation in different types of water bodies on urban areas

The researche of structural indices of higher aquatic vegetation (HAV) (floristic, coenotic and productive) in the water bodies which are exposed to complex anthropogenic influence under conditions of the urban landscape are resulted in the work. The structural changes in the flora and vegetation of macrophytes were identified, which reflect the integrated response of aquatic ecosystem to intense anthropogenic load and affect its ability to efficiently use solar energy and produce organic matter. In the course of the dissertation research a scale for assessing the degree of urbanization of the landscape by signs of anthropogenic impact on the middle river section was proposed and an indicator complex of macrophytes for river sections with different degrees of anthropogenic load was identified. Typification of water bodies of the urban area according to the degree of the water area overgrowing by different ecological groups of macrophytes was conducted. According to the indices of quantitative development of HAV communities (area of thickets, specific phytomass reserve, annual production), aquatic ecosystems that have 8 undergone the strongest anthropogenic transformation in the urban landscape have been identified.