Rasprostranjenost i ekološke značajke algi kremenjašica roda Navicula u tekućicama u Hrvatskoj

master's thesis

• Title (english): Distribution and ecology of the diatom genus Navicula in running water in Croatia
• Author: Nela Tadić
• Mentor: Marija Gligora Udovič (mentor)
• Committee member: Marija Gligora Udovič (predsjednik povjerenstva)
• Committee member: Blanka Cvetko Tešović (član povjerenstva)
• Committee member: Petar Kružić (član povjerenstva)
• Committee member: Luka Valožić (član povjerenstva)
• Committee member: Ivan Čanjevac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2022-06-13, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

U obraštaju tekućica, alge kremenjašice najzastupljenija su autotrofna komponenta. Svojom
raznolikošću i brojnošću u obraštaju ukazuju na zdravlje ekosustava i kakvoću vode zbog čega su
nezaobilazni bioindikatori u praćenju promjena slatkih voda. Glavni cilj ovog istraživanja bio je
prikazati rasprostranjenost vrsta unutar najzastupljenijeg roda algi kremenjašica, roda Navicula,
uzimajući u obzir okolišne čimbenike staništa kojeg vrste nastanjuju u tekućicama Republike
Hrvatske. Podaci koji su potrebni za ovo istraživanje dobiveni su iz službene baze podataka
Hrvatskih voda o ekološkom stanju tekućica u Hrvatskoj. Na osnovi tih podataka izrađena je baza
podataka koja sadrži relativnu učestalost 57 vrsta roda Navicula zabilježenih na postajama diljem
Panonske i Dinaridske regije u Republici Hrvatskoj u periodu od 2010. do 2018. godine. Istraživane
postaje u bazi podataka imaju i pripadajuće izmjerene fizikalno-kemijske pokazatelje. Izrađene su
karte rasprostranjenosti vrsta te je određen odnos relativne zastupljenosti vrsta i ekoloških
čimbenika postaja uz pomoć statističkih metoda. Najučestalije zabilježene vrste su Navicula
cryptotenella Lange-Bertalot i Navicula tripunctata (O.F. Müller) Bory kojima odgovara širok
spektar ekoloških čimbenika.

Abstract (english)

In the periphyton of running waters, diatoms are the predominant autotrophic component. With
their diversity and abundance in the periphyton, they indicate ecosystem health and water quality,
making them indispensable bioindicators in monitoring changes in freshwater. The main objective
of this study was to reveal the species distribution of the most common genus of diatoms, the genus
Navicula, taking into account the environmental factors of the habitat that the species inhabit in
Croatian streams and rivers. The data needed for this study were obtained from the official database
of Hrvatske vode on the ecological status of streams and rivers in Croatia. Based on these data, a
database was created containing the relative abundance of species of the genus Navicula recorded
at sites in the Pannonian and Dinaric ecoregions in Croatia from 2010 to 2018. The studied sites in
the database also include the corresponding measured physiochemical parameters. Species
distribution maps were prepared and the relationship between the relative representation of species
and ecological factors of the sites was determined using statistical methods. The most numerous
species recorded were Navicula cryptotenella Lange-Bertalot and Navicula tripunctata (O.F.
Müller) Bory which tolerate a wide range of ecological parameters.

• Keywords: učestalost; karte rasprostranjenosti; obraštaj; analiza varijance; koeficijent korelacije
• Keywords (english): abundance; distribution maps; periphyton; analysis of variance; correlation coefficient
• Language: croatian
• URN:NBN: urn:nbn:hr:217:047872
• 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: Embargoed access; Embargo expiration date: 2024-06-13
• Created on: 2022-06-15 10:45:24