UTILIZATION OF GIS IN MAPPING INVASIVE PLANT SPECIES OF THE RIVER NITRA
UTILIZATION OF GIS IN MAPPING INVASIVE PLANT SPECIES OF THE RIVER NITRA

Author(s): Michaela Bencová, Vladimíra Lišková, Jozef Ťažký, Dávid Tomko-Králo
Subject(s): Physical Geopgraphy, Environmental Geography, Maps / Cartography
Published by: Masarykova univerzita nakladatelství
Keywords: Invasion; Plants; Nitr; River; GIS;
Summary/Abstract: The River Nitra is a significant bio corridor in the Hornonitrianska basin. The river is prone to occupation by invasive species due to the disturbances caused by floods and also because a part of the river had been transferred to a new river bed. Geographic information systems tools are necessary to investigate the occurrence and distribution of these species as they help to infer the factors that affect their occurrence. Our contribution includes the results of field mapping of the River Nitra, which was carried out from 2016 to 2017. The study area of the river was divided into segments with a length of 500 m, where the occurrence of invasive species was recorded. Mapping took place within 50 m of the cunette. By using the GIS software, the values obtained were incorporated into the resulting map. Subsequently, we deduced factors which influence the increased occurrence of invasive species in some segments. The results show that a major part of the segments was attacked by at least one invasive species. The predominant species are Helianthus tuberosus and Solidago canadensis.

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