Presents the results of study the characteristics of the population of snail Helix pomatia, which lives on various elements of the urban ecosystem in the north-western part of Ukraine and to determine the influence of animal settlement factors on their overall development basing on external morphological characteristics. It was revealed that H. pomatia population can be characterised by greater biomass in areas with natural landscapes (72 of the total), while relatively urbanised areas have 8 and agricultural lands have 20.
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