A City as a Source of Introduction for Tropical Alien Species (Egeria Densa Planch., Pistia Stratiotes L. & Eichornia Crassipes (Mart.) Solms) in Natural Ecosystems with a Temperate Climate

Abstract

This paper is concerned with the study of ecology and invasive behaviour of southern tropical invaders (Egeria densa, Pistia stratiotes, Eichornia crassipes) in the setting of urban landscape water bodies with a temperate climate (the case of Kyiv, Ukraine). The article explores the role of a city as a source of invasions. It shows that escape from aquaculture (aquariums or decorative ponds) or deliberate release into natural water bodies are the main settlement solution. A brief historical background of these species found in water bodies of Ukraine has been presented. Favourable treatment for modern invasions of pantropical species has been analysed. Phytocoenotic special aspects of the communities formed by these species and ways and possibilities of naturalization of species in natural water bodies have been explored. Production indicators are being analysed.

New floristic records in Kyiv City and its environs

“…В урбанофлорі м. Києва P. crassipes уперше виявлений у 2020 р. в одному зі ставків у північно-західній частині міста, а в 2021 р. відзначені масові спалахи у дренажних каналах Осокорків та протоках Дніпра в пдсх. околиці міста (Prokopuk et al, 2021). В осінній період 2020-2022 рр.…”