Tujerodne ribje vrste v jadranskem povodju Slovenije

Krečič, Erik (author), Vintar Mally, Katja (mentor)

Diplomsko delo preučuje razširjenost tujerodnih ribjih vrst v jadranskem povodju Slovenije. Namen dela je določiti tujerodne ribje vrste, ki se pojavljajo v jadranskem povodju; odkriti vzroke za njihovo prisotnost; odkriti vpliv na domorodne ribje vrste, ter prikazati njihovo lokacijo in prostorsko razširjenost. Avtor v prvem delu s študijem strokovne literature oriše ekološki problem, ki ga ustvarjajo invazivne tujerodne ribje vrste, in opiše njihove splošne značilnosti. V drugem delu analizira in interpretira uradne podatke Zavoda za ribištvo Slovenije glede številčnosti, časovne dinamike in lokacije pojavljanja tujerodnih ribjih vrst na preučevanem območju. S pomočjo geografskih informacijskih sistemov so bile izdelane karte razširjenosti posameznih tujerodnih ribjih vrst, za katere monitoring v zadnjih letih kaže na povečevanje števila popisanih osebkov. Po analizi literature in podatkov avtor potrdi dve od treh postavljenih hipotez. Podatki kažejo na to, da je na območju jadranskega povodja prisotnih 12 tujerodnih vrst rib. Avtor prav tako pride do zaključka, da so tujerodne ribje vrste najgosteje naseljene v spodnjem toku reke Vipave. Tretja hipoteza pa je le delno potrjena, saj so najštevilčnejše tujerodne vrste na preučevanem območju šarenka, sončni ostriž ter gambuzija. Avtor je pravilno sklepal glede številčnosti prvih dveh vrst, kot tretjo najpogostejšo pa je navedel gojenega krapa.

• Language: Slovenian
• Keywords: invazivnost, tujerodnost, jadransko povodje, ribje vrste, varstvo okolja, Slovenija.
• Work type: Bachelor thesis/paper
• Organization: FF - Faculty of Arts
• Year: 2022
• PID: 20.500.12556/RUL-141421
• Publication date in RUL: 29.09.2022

Secondary language

• Language: English
• Title: Alien fish species in the Adriatic basin of Slovenia

Abstract

The diploma thesis examines the distribution of alien fish species in the Adriatic basin of Slovenia. The purpose of the work is to determine alien fish species that occur in the Adriatic basin; discover the causes of their presence; discover how they affect native fish species and show their location and spatial distribution. In the first part, by studying scientific literature, the author outlines the ecological problem created by invasive alien fish species and describes their general characteristics. In the second part, he analyzes data from the Fisheries research institute of Slovenia regarding the abundance, temporal dynamics and the location of alien fish species in the studied area. With the help of GIS, maps of the distribution of alien fish species were created. After analyzing the literature and data, the author confirms two of the three hypotheses. The data indicate that 12 alien fish species are present in the area of the Adriatic basin. The author also comes to the conclusion that alien fish species are most densely populated in the lower reaches of the Vipava river. The third hypothesis is only partially confirmed, as the most numerous alien species in the studied area are rainbow trout, pumpkinseed and mosquitofish. The author made a correct conclusion regarding the abundance of the first two species, but he listed farmed carp as the third most common.

• Keywords: invasiveness, non-nativeness, Adriatic basin, fish species, environmental protection, Slovenia.