Ekologija dijatomeja razreda Coscinodiscophyceae i Mediophyceae u krškim jezerima Hrvatske

master's thesis

• Title (english): Ecology of centric diatoms (Coscinodiscophyceae and Mediophyceae ) in deep karstic lakes, Croatia
• Author: Anamarija Ćukurin
• Mentor: Marija Gligora Udovič (mentor)
• Committee member: Marija Gligora Udovič (predsjednik povjerenstva)
• Committee member: Dražen Balen (član povjerenstva)
• Committee member: Zlatko Mihaljević (član povjerenstva)
• Committee member: Neven Bočić (član povjerenstva)
• Committee member: Jasenka Sremac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2016-02-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

U potrebi za boljim pokazateljima stanja voda, uz fizikalno-kemijske standarde provode se i
ekološke metode ocjena stanja voda. Prema Okvirnoj direktivi o vodama (ODV) bitan
pokazatelj promjena u vodenim ekosustavima fitoplanktonska zajednica, čiji značajan dio
čine dijatomeje. U tu svrhu analizirani su uzorci fitoplanktona iz dubokih krških jezera:
Visovačko i Kozjak 2009. godine te Vransko i Prošće 2010. godine. Brojnost i biomasa
fitoplanktona te fizikalno-kemijski čimbenici pojedinog jezera izrađeni su u okviru ESV
projekta te su korišteni za statističke analize ekoloških valenci pojedinih vrsta centričnih
dijatomeja. Očišćeni sedimentirani uzorci korišteni su za taksonomske analize vrsta pomoću
svjetlosnog i elektronskog mikroskopa. Prema Reynoldsovoj klasifikaciji dijatomejske vrste
razreda Coscinodiscophyceae i Mediophyceae opisuju funkcionalne grupe (FG) A, B i C.
Druge FG prisutne u značajnim postocima su: E, LO, D i P. Dobiveni rezultati uspoređeni su s
dosadašnjim spoznajama radi unapređenja monitoring i očuvanja osjetljivih i dragocjenih
krških resursa

Abstract (english)

A need for better water management led to implementation of ecological methods in the
assessment of water quality alongside physico-chemical standards. According to Water
Framework Directive (WFD), the phytoplankton community is an essential indicator of
changes in water ecosystems, which diatoms make a significant portion of. Phytoplankton
was sampled from four deep karstic lakes: Visovačko and Kozjak (in 2009), and Vransko and
Prošće (in 2010). Results of abundance and biomass of phytoplankton, and physico-chemical
parameters of each lake were made in the context of ESV project, and were used for statistical
analysis of ecological valences of centric diatoms. The cleaned samples were used for
taxonomic analysis of species with the help of LM and SEM. The descriptor species of
functional groups of diatoms (class Coscinodiscophyceae and Mediophyceae) were found,
which according to Reynolds classification belong to the codons A, B and C. Other FGs,
which were present in a significant percentage, are: E, Lo, D and P. The results were
compared with the current findings in order to improve the monitoring and preservation of
sensitive and valuable karst resources

• Keywords: krška jezera; fitoplankton; centrične dijatomeje; funkcionalne grupe
• Keywords (english): karstic lakes; phytoplankton; centric diatoms; functional groups
• Language: croatian
• URN:NBN: urn:nbn:hr:217:097905
• Study programme: Title: Enviromental Sciences; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra struke znanosti o okolišu (magistar/magistra struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-04-27 12:35:27