BIOINDIKATORSKI POTENCIJAL PERIFITONA U PRAĆENJU REVITALIZACIJE SEDRENIH BARIJERA

doctoral thesis

• Title (english): BIOINDICATOR POTENTIAL OF PERIPHYTON IN MONITORING REVITALIZATION OF TUFA BARRIERS
• Author: Vesna Gulin Beljak
• Mentor: Renata Matoničkin Kepčija (mentor)
• Committee member: Barbara Vlaičević (predsjednik povjerenstva)
• Committee member: Maria Špoljar (član povjerenstva)
• Committee member: Sandi Orlić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2023, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology
• Universal decimal classification (UDC): 57 - Biological sciences. Physical anthropology. Biodiversity

Abstract

Restauracijski napori u lotičkim ekosustavima svakodnevno se povećavaju diljem svijeta. U
sklopu ovog doktorskog rada prvi put je istražen bioindikatorski potencijal perifitona tj.
njegove heterotrofne komponente (ameboidni protisti i trepetljikaši) u detekciji i praćenju
revitalizacije vodenih tokova sedrene barijere Skradinski buk nakon provedenih mjera
restauracije u vidu uklanjanja jedinki invazivne biljne vrste pajasena. Sveobuhvatnom
analizom taksonomskih i funkcionalnih metrika fagotrofnih protista te pripadajućih okolišnih
čimbenika revitaliziranih tokova potvrđen je odgovor perifitona na revitalizaciju. Promjenjiva
hidrologija revitaliziranih tokova (bujični tokovi/presušivanje) utjecala je na većinu okolišnih
parametara (fizikalno-kemijske parametre vode, podrijetlo i količinu organske tvari, količinu
sedre) te posljedično taksonomski i funkcionalni sastav perifitona. U oblikovanju funkcionalne
raznolikosti fagotrofnih protista osim okolišnih parametara ključnom se pokazala i
interspecijska kompeticija odnosno kompetitivno isključivanje, a važnost iste potvrđena je i
istraživanjem funkcionalne i filogenetske raznolikosti trepetljikaša duž rijeke Krke.

Abstract (english)

Efforts to restore lotic ecosystems are increasing daily worldwide. In this doctoral thesis, the
bioindicator potential of periphyton, i.e., its heterotrophic components (amoeboid protists and
ciliates) in detection and monitoring stream revitalization at Skradinski buk tufa barrier was
investigated for the first time. A comprehensive analysis of taxonomic and functional metrics
of phagotrophic protists and associated environmental parameters of revitalized streams
confirmed the response of periphyton to revitalization. The changing hydrology of revitalized
streams (flooding/drying events) affected most environmental parameters (physicochemical
parameters of water, origin and amount of organic matter, amount of tufa) and consequently
the taxonomic and functional composition of periphyton. Besides environmental parameters,
interspecies competition was crucial in shaping the functional diversity of phagotrophic
protists, and its importance was also confirmed by a study of ciliates' functional and
phylogenetic diversity along the Krka River.

• Keywords: restauracija; ameboidni protisti; trepetljikaši; sedra; funkcionalna raznolikost; organska tvar
• Keywords (english): restoration; amoeboid protists; ciliates; tufa; functional diversity; organic matter
• Language: croatian
• URN:NBN: urn:nbn:hr:217:324585
• Promotion: 2023
• Study programme: Title: Biology; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, područje prirodnih znanosti, polje biologija (doktor/doktorica znanosti, područje prirodnih znanosti, polje biologija)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-07-06 13:47:32