Kvalitativni i kvantitativni sastav ihtiofaune jezera Savica

master's thesis

• Title (english): Qualitative and quantitative composition of the ichthyofauna of Lake Savica
• Author: Margareta Kljun
• Mentor: Davor Zanella (mentor)
• Committee member: Davor Zanella (predsjednik povjerenstva)
• Committee member: Zoran Marčić (član povjerenstva)
• Committee member: Damir Sirovina (član povjerenstva)
• Committee member: Perica Mustafić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2024-02-22, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Značajni krajobraz Savica je najvrijednije i jedino močvarno područje grada Zagreba. Značajni krajobraz obuhvaća manji dio starog rukavca rijeke Save (Stara Savica) te 13 međusobno povezanih jezera nastali proširivanjem starih riječnih rukavaca. Jezera, prema biološkoj klasifikaciji, pripadaju eutrofnim jezerima te pružaju sve uvjete za život i napredak populacija riba. Cilj istraživanja bio je istražiti kvalitativni i kvantitativni sastav ihtiofaune jezera Savica te istovremeno odrediti indekse bioraznolikosti, zastupljenost alohtonih vrsta i odrediti zastupljenost vrsta prema trofičkim i ekološkim grupama. Uzorkovanje se provodilo na 11 prethodno određenih lokacija, na području značajnog krajobraza Savica (od svibnja do listopada 2023. godine). Uzorkovanje je provedeno elektroribolovom. Za analiziranje ihtiofaune korištene su osnovne funkcije u Microsoft Excel-u i indeksi bioraznolikosti (Simpsonov indeks, Shannonov-Wienerov indeks i Brillouinov indeks). Zabilježeno je ukupno 20 vrsta riba, od kojih je 7 alohtono. Dobiveni rezultati uspoređeni su s prijašnjim istraživanjem jezera Savica. Rezultati su pokazali da jezera Savica nastanjuju ribe nizinskog tipa stajaćih voda, vrste su generalno oportunističke s pokojom športsko zanimljivom vrstom

Abstract (english)

The protected landscape of Savica is the most valuable and the only wetland area of the city of Zagreb. The protected landscape includes a small part of the old branch of the Sava River (Stara Savica) and 13 interconnected lakes created by the expansion of the old river branches. According to the biological classification, the lakes belong to eutrophic lakes and provide all conditions for the life and development of fish populations. The goal of the research was to investigate the qualitative and quantitative composition of the ichthyofauna of Lake Savica and at the same time to determine biodiversity indices, the representation of non-native species and to determine the representation of species according to trophic and ecological groups. Sampling was carried out at 11 previously determined locations, in area of the protected landscape of Savica (from May to October 2023). Sampling was carried out by electrofishing. Basic functions in Microsoft Excel and biodiversity indices (Simpson index, Shannon-Wiener index and Brillouin index) were used to analyze the ichthyofauna. A total of 20 species of fish were recorded, of which 7 are non-native. The obtained results were compared with the previous research of Lake Savica. Savica is inhabited by fish of the lowland type of stagnant waters, the species are generally opportunistic with a few species of sporting interest.

• Keywords: značajni krajobraz Savica; bioraznolikost; riblje zajednice; alohtone vrste
• Keywords (english): protected landscape of Savica; biodiversity; fish communities; non-native species
• Language: croatian
• URN:NBN: urn:nbn:hr:217:473189
• Study programme: Title: Ecology and Nature Preservation-University graduate programme; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra ekologije i zaštite prirode (sveučilišni/a magistar/magistra ekologije i zaštite prirode)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-03-08 10:34:42