Number and species structure of communities of insectivorous biotopes of varying degrees of anthropogenic transformation of the urban landscape

Abstract

As a result of a two-year (2019-2020) study of the species diversity of insectivorous communities, captured in four biotopes of the Novosibirsk Akademgorodok, located within the 5 km radius, with varying degrees of anthropogenic transformation (from native to urban cenosis), some differences in species wealth, population size, dominance structures of insectivorous in the biotopes studied have been found. At the early stage of landscape transformation in the zone of contact between a biotope and low-rise buildings, the anthropogenic factor acts most aggressively - the number of insectivores in catches increases. The community of a biotope of a later transformation stage, which has been under the influence of an aggressive environment for a long time, is not numerous. The species diversity of insectivorous communities is characterized applying information indices.