Fitoplankton kao biološki pokazatelj kakvoće vode akumulacije Butoniga

master's thesis

• Title (english): Phytoplankton - a biological indicator in the water quality assessment of Butoniga Reservoir
• Author: Ivan Šetin
• Mentor: Anđelka Plenković-Moraj (mentor)
• Committee member: Marin Ježić (predsjednik povjerenstva)
• Committee member: Damir Sirovina (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2019-12-05, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Uzorci fitoplanktona sakupljani su jednom mjesečno na četiri vertikalna profila tijekom vegetacijske
sezone (svibanj, lipanj, srpanj, kolovoz, rujan i listopad) u razdoblju 2014.-2018. U fitoplanktonskoj je
zajednici ukupno utvrđeno 128 vrsta. Brojnošću vrsta dominiraju zelene alge (Chlorophyta i
Charophyta), dok je subdominantna skupina Bacillariohyta. Abundancijom broja stanica/L redovito
dominiraju skupine Ochrophyta (Dinobryon spp.) i Bacillariohyta (Cyclotella spp.). Navedeni su rodovi
gotovo redovito dominantni tijekom čitavog razdoblja istraživanja uz kodominaciju zelenih algi
(Tetrastrum komarekii Hindák i Oocystis sp.) te cijanobakterije Konvophoron sp. (ex Romeria). Tijekom
istraživanog razdoblja redovito je najveća gustoća fitoplanktona utvrđena u ljetnom razdoblju. Na
temelju frekvencije pojavljivanja i maksimalne gustoće fitoplanktona dominanta funkcionalna grupa (FG)
u akumulaciji bila je B-E. Izračunati trofički indeks dijatomeja ukazuje na mezotrofno stanje s
tendencijom prema umjereno eutrofnom stanju, a saprobni na I-II odnosno II klasu boniteta vode s
povremenom tendencijom porasta. Provedenim analizama definirani fitoplanktonski deskriptori i njihove
pripadajuće vrijednosti klasama Okvirne Direktive o vodama (ODV), definirane su postojećim zakonskim
aktom koji ne uključuje metodologiju za akumulacije. Završetkom izrade i verificiranjem metodologije
izračuna ekološkog potencijala za akumulacije neophodno je provesti usklađivanje prikupljenih
podataka i novih izračuna.

Abstract (english)

Phytoplankton samples were collected monthly on four vertical profiles during the vegetative season
(May, June, July, August, September, and October) in 2014-2018. A total of 128 species have been
identified in the phytoplankton community. The number of species is dominated by green algae
(Chlorophyta and Charophyta), while the subdominant group is Bacillariohyta. Abundance (cell
number/L) is regularly dominated by the groups Ochrophyta (Dinobryon spp.) and Bacillariohyta
(Cyclotella spp.). These genera are almost regularly dominant throughout the study period with
subdomination of green algae (Tetrastrum komarekii Hindák and Oocystis sp.) and cyanobacteria
Konvophoron sp. (ex Romeria). During the study period, the highest phytoplankton density was regularly
found in the summer. Based on the frequency of occurrence and maximum of phytoplankton density,
the dominant functional group (FG) in the reservoir was B-E. The calculated trophic index of diatoms
indicates a mesotrophic state with a tendency towards a moderately eutrophic state, and saprobic ones
on the I-II and II class, respectively, of water quality with an occasional upward tendency. The
phytoplankton descriptors and their associated WFD values were defined through analyzes performed
by an existing legal act that does not include the methodology for reservoirs. By completing the
development and verifying the methodology for calculating the e

• Keywords: fitoplankton; akumulacija Butoniga; ekološko stanje
• Keywords (english): phytoplankton; Butoniga Reservoir; ecological status
• Language: croatian
• URN:NBN: urn:nbn:hr:217:420999
• Study programme: Title: Biology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra edukacije biologije (magistar/magistra edukacije biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2021-12-05
• Created on: 2020-06-09 10:11:37