Distribution and abundance of invasive alien plant species along the river Ledava.

Cilj diplomskega dela je bil ugotoviti pogostost in pojavljanje invazivnih tujerodnih rastlinskih vrst vzdolž reke Ledave. Delo je potekalo poleti, leta 2016. Izbrali smo si 20 lokacij ob reki Ledavi. Prva lokacija je bila na mestu, kjer reka priteče iz Avstrije v Slovenijo, zadnja lokacija pa je bila na območju meje z Madžarsko. Na vsaki izmed lokacij smo s pomočjo vprašalnika ocenili stanje vodotoka ter prisotnost in pogostost invazivnih tujerodnih rastlinskih vrst. Popisali smo sedem invazivnih tujerodnih vrst. Invazivnim tujerodnim vrstam smo ocenili prisotnost, pojavnost, fenološko fazo, pogostost, pokrovnost in vitalnost. Opazili smo, da se najpogosteje pojavljata vrsti Solidago gigantea in Impatiens glandulifera. Rezultate smo predstavili grafično.The aim of this diploma thesis was to determine the frequency and occurrence of invasive alien plant species along the Ledava River. Research was carried out in the summer of 2016. Twenty locations along the Ledava River were surveyed. The first location was close to the Austrian border, while the last location was at the border with Hungary. At each location, the condition of the river and the presence and abundance of invasive alien plant species were assessed using a questionnaire. Seven invasive alien species were recorded. The presence, abundance, phenological phase, frequency, cover and vitality of these invasive alien species were assessed. Data analysis revealed that the two most frequent species were Solidago gigantea and Impatiens glandulifera. The results are presented in the graphic form