Indikatorski sustav Trofičkog indeksa dijatomeja Republike Hrvatske

master's thesis

• Title (english): Indicator system of the Trophic Diatom Index of the Republic of Croatia
• Author: Mateo Smetko
• Mentor: Marija Gligora Udovič (mentor)
• Committee member: Marija Gligora Udovič (predsjednik povjerenstva)
• Committee member: Draginja Mrvoš-Sermek (član povjerenstva)
• Committee member: Damir Sirovina (član povjerenstva)
• Committee member: Željka Soldin (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2022-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Fitobentos je biološki element kakvoće tekućica u Hrvatskoj, kojeg u metodologiji ocjene
ekološkog stanja predstavljaju dijatomeje, a korišteni indeks u metodologiji je Trofički indeks
dijatomeja Republike Hrvatske (TIDHR). Baza podataka višegodišnjeg monitoringa fitobentosa
u razdoblju od 2010.-2020. obuhvaća ukupno 581 mjernu postaju i sadrži 1169 podataka o
sastavu i relativnoj brojnosti dijatomeja. Od ukupno 959 vrsta dijatomeja u operativnoj listi,
indikatorske vrijednosti i težine trofičkog indeksa ima 545 vrsta. Broj vrsta koje nemaju
indikatorsku vrijednost i težinu je 415. Broj vrsta koje su zastupljene s više od 60 frustula (15
%) u uzorku, a nemaju indikatorske vrijednosti i težine, je ukupno 26. Prema ciljevima,
relativne učestalosti 26 vrsta u uzorcima korelirane su s okolišnim čimbenicima te je prikazana
njihova rasprostranjenost, ekološke značajke i mogućnosti uvođenja novih indikatorskih
veličina i težina. Za sve izračunate OEK-e korelacijom prikazan je odgovor na okolišne
čimbenike. Iako nisu dobivene značajne promijene u izračunima ekološkog stanja na
cjelokupnom setu podataka, ovo istraživanje doprinos je novim spoznajama o indikatorskom
sustavu Trofičkog indeksa dijatomeja Republike Hrvatske na način da je ukazalo na koje vrste
daljnja istraživanja i statističke obrade, trebaju biti usmjerene kako bi se unaprijedio
indikatorski sustav.

Abstract (english)

Fitobentos is a biological water quality element of streams and rivers in Croatia, represented in
the assessment by diatoms. The index used in the methodology is the Trophic Diatom Index of
the Republic of Croatia (TIDHR). The database of phytobenthos monitoring for the period 2010-
2020 includes a total of 581 monitoring stations and contains 1169 data on the composition and
relative abundance of diatoms. Of the total 959 diatom species in the operational list, the
indicator values and weights of the TIDHR indicate 545 species. The number of species for
which indicator values and weights are not available is 415, and the number of species
represented in the sample with more than 60 frustules and no indicator values and weights is
26. Consistent with the main objectives of the study, the relative abundances of the 26 species
in the samples were correlated with environmental factors. Their distribution, ecological
characteristics, and the possibility of introducing new indicator values and weights were
indicated. For all calculated OEKs, the correlation shows the response to environmental factors.
Although no significant changes in ecological status were found for the whole data set, this
study contributes to new knowledge about the indicator system of the Trophic Diatom Index
of the Republic of Croatia and indicates what kind of further research and statistical processing
should be carried out to improve the indicator system.

• Keywords: fitobentos; rasprostranjenost dijatomeja; ekološko stanje; okolišni čimbenici
• Keywords (english): phytobentos; distribution of diatoms; ecological status; environmental factors
• Language: croatian
• URN:NBN: urn:nbn:hr:217:970740
• Study programme: Title: Integrated undergraduate and graduate university study of Biology and Chemistry Education; specializations in: Integrated undergraduate and graduate university study of Biology and Chemistry Education; Course: Integrated undergraduate and graduate university study of Biology and Chemistry Education; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar/magistra edukacije biologije i kemije (magistar/magistra edukacije biologije i kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2024-09-23
• Created on: 2022-10-21 11:21:04