
<ns0:uwmetadata xmlns:ns0="http://phaidra.univie.ac.at/XML/metadata/V1.0" xmlns:ns1="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0" xmlns:ns10="http://phaidra.univie.ac.at/XML/metadata/provenience/V1.0" xmlns:ns11="http://phaidra.univie.ac.at/XML/metadata/provenience/V1.0/entity" xmlns:ns12="http://phaidra.univie.ac.at/XML/metadata/digitalbook/V1.0" xmlns:ns13="http://phaidra.univie.ac.at/XML/metadata/etheses/V1.0" xmlns:ns2="http://phaidra.univie.ac.at/XML/metadata/extended/V1.0" xmlns:ns3="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/entity" xmlns:ns4="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/requirement" xmlns:ns5="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/educational" xmlns:ns6="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/annotation" xmlns:ns7="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/classification" xmlns:ns8="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/organization" xmlns:ns9="http://phaidra.univie.ac.at/XML/metadata/histkult/V1.0">
  <ns1:general>
    <ns1:identifier>o:1395</ns1:identifier>
    <ns1:title language="sr">Утицај промена еколошких фактора на састав и динамику фитопланктонских цијанобактерија (Cyanobacteria) у малим акумулацијама</ns1:title>
    <ns2:alt_title language="sr">ǂThe ǂeffect of changes of ecological factors on composition and dynamics of phytoplankton cyanobacteria (Cyanobacteria) in small reservoirs : doctoral dissertation</ns2:alt_title>
    <ns1:language>sr</ns1:language>
    <ns1:description language="sr">Predmet istraživanja ove doktorske disertacije su fitoplanktonske 
cijanobakterije (Cyanobacteria) u malim akumulacijama i uticaji ekoloških faktora na prisustvo i dominaciju različitih vrsta, sa posebnim aspektom na potencijalno 
invazivne i toksične cijanobakterije. Trogodišnji monitoring je sproveden jednom 
mesečno na tri akumulacije (akumulacija Šumarice, akumulacija Bubanj i 
Aleksandrovačka akumulacija). Primenom metode samoorganizujućih mapa (SOM) 
omogućena je klasifikacija uzoraka na osnovu fizičkih i hemijskih parametara, kao i 
vizualizacija prostorne distribucije biotičkih parametara. Tri pomenuta vodna tela 
značajno se razlikuju po opštim karakteristikama, hemijskom sastavu vode i dinamici 
fitoplanktonskih cijanobakterija. Različitost ispitivanih akumulacija se ogleda u
malom broju zajedničkih taksona i u taksonima koji su bili najfrekventniji i cvetajući: 
akumulacija Šumarice (Aphanizomenon flos-aquae), akumulacija Bubanj (Microcystis 
aeruginosa) i Aleksandrovačka akumulacija (Raphidiopsis raciborskii). Najznačajniji 
sredinski parametri koji utiču na zajednicu cijanobakterija su koncentracije ukupnog 
fosfora i azota. Naša studija pokazuje da ekstremne padavine mogu da dovedu do 
povećanja koncentracije hranljivih materija u rezervoarima, i uzrokuju značajan 
ekološki poremećaj zajednice (cvetanje potencijalno toksičnih cijanobakterija). Pojava 
i dominacija invazivne vrste R. raciborskii u Aleksandrovačkoj akumulaciji pokazuje da 
ova vrsta širi svoj areal rasprostranjenja. Prilikom sprovedenog istraživanja u okviru 
ove disertacije u Srbiji prvi put je detektovan toksin cilindrospermopsin (CYN). Ova 
studija je pokazala da je ekstrakt vrste R. raciborskii ispoljio genotoksičnost čak i u 
niskim koncentracijama i povećao oksidativni stres u jetri pacova nakon jednog 
izlaganja.</ns1:description>
    <ns1:description language="en">The research subject of this doctoral dissertation includes phytoplankton cyanobacteria (Cyanobacteria) in the small reservoirs and the effects of ecological factors on the presence and dominance of different species, with particular aspects on invasive and potentially toxic cyanobacteria. Three-year monitoring was conducted (monthly) on three reservoirs (Šumarice 
reservoir, Bubanj reservoir, and Aleksandrovac reservoir). The method of self-organizing map 
(SOM) provided the efficient classification of samples, based on physical and chemical 
parameters, as well as the visualization of the spatial distribution of biotic parameters. These 
three water bodies are significantly different according to their general characteristics, chemical 
water composition, and cyanobacteria dynamics. The dissimilarity of the examined reservoirs is 
reflected in the small number of common taxa and in the taxa that were the most frequent and 
blooming: Šumarice reservoir (Aphanizomenon flos-aquae), Bubanj reservoir (Microcystis 
aeruginosa) and Aleksandrovac reservoir (Raphidiopsis raciborskii). Тhe most important environmental parameters affecting the cyanobacteria community are concentrations of total phosphorus and nitrogen. Our study shows that extreme precipitations can cause an increase in nutrient concentration in reservoirs and significant environmental disturbance to the community 
(blooming of potentially toxic cyanobacteria). The domination of invasive species R. raciborskii
in Aleksandrovac reservoir indicates that this species is expanding its areal distribution. The 
research conducted in this dissertation has detected the toxin cilindrospermopsin (CYN) for the 
first time in Serbia. This study shows that the extract of R. raciborskii exhibited genotoxicity 
even at low concentrations and increased oxidative stress in rat liver after a single exposure.</ns1:description>
    <ns1:description language="sr"></ns1:description>
    <ns2:identifiers>
      <ns2:identifier>ID=43435785 ;  D-3446</ns2:identifier>
    </ns2:identifiers>
    <ns2:identifiers>
      <ns2:resource>91552101</ns2:resource>
      <ns2:identifier>8322</ns2:identifier>
    </ns2:identifiers>
    <ns2:identifiers>
      <ns2:resource>91552100</ns2:resource>
      <ns2:identifier>43435785</ns2:identifier>
    </ns2:identifiers>
  </ns1:general>
  <ns1:lifecycle>
    <ns1:upload_date>2021-10-18T16:01:59.053Z</ns1:upload_date>
    <ns1:status>45</ns1:status>
    <ns2:peer_reviewed>no</ns2:peer_reviewed>
    <ns1:contribute seq="0">
      <ns1:role>46</ns1:role>
      <ns1:ext_role>mentor</ns1:ext_role>
      <ns1:entity seq="0">
        <ns3:firstname> Nevena, 1982-, 24993383</ns3:firstname>
        <ns3:lastname>Đorđević</ns3:lastname>
      </ns1:entity>
      <ns1:date>2021</ns1:date>
    </ns1:contribute>
    <ns1:contribute seq="1">
      <ns1:role>63</ns1:role>
      <ns1:ext_role>mentor</ns1:ext_role>
      <ns1:entity seq="0">
        <ns3:firstname> Snežana B., 1966-, 9118311</ns3:firstname>
        <ns3:lastname>Simić</ns3:lastname>
      </ns1:entity>
      <ns1:date>2021</ns1:date>
    </ns1:contribute>
    <ns1:contribute seq="2">
      <ns1:role>63</ns1:role>
      <ns1:ext_role>član komisije</ns1:ext_role>
      <ns1:entity seq="0">
        <ns3:firstname> Gordana, 1964-, 12676711</ns3:firstname>
        <ns3:lastname>Subakov-Simić</ns3:lastname>
      </ns1:entity>
      <ns1:date>2021</ns1:date>
    </ns1:contribute>
    <ns1:contribute seq="3">
      <ns1:role>63</ns1:role>
      <ns1:ext_role>član komisije</ns1:ext_role>
      <ns1:entity seq="0">
        <ns3:firstname> Aleksandar, 1960-, 13623399</ns3:firstname>
        <ns3:lastname>Ostojić</ns3:lastname>
      </ns1:entity>
      <ns1:date>2021</ns1:date>
    </ns1:contribute>
    <ns1:contribute seq="4">
      <ns1:role>63</ns1:role>
      <ns1:ext_role>član komisije</ns1:ext_role>
      <ns1:entity seq="0">
        <ns3:firstname> Dragana, 1985-, 20856679</ns3:firstname>
        <ns3:lastname>Predojević</ns3:lastname>
      </ns1:entity>
      <ns1:date>2021</ns1:date>
    </ns1:contribute>
  </ns1:lifecycle>
  <ns1:technical>
    <ns1:format>[12], 132, [49] listova</ns1:format>
    <ns1:size>12570425</ns1:size>
    <ns1:location>http://phaidrabg.bg.ac.rs/o:1395</ns1:location>
  </ns1:technical>
  <ns1:rights>
    <ns1:cost>no</ns1:cost>
    <ns1:copyright>yes</ns1:copyright>
    <ns1:license>5</ns1:license>
  </ns1:rights>
  <ns1:annotation>
    <ns6:annotations>
      <ns6:date>2021-10-18T16:01:59.320Z</ns6:date>
    </ns6:annotations>
  </ns1:annotation>
  <ns1:classification>
    <ns1:purpose>70</ns1:purpose>
    <ns7:keyword language="sr" seq="1">fitoplanktonske cijanobakterije, Cyanobacteria, cijanotoksini, invazivne vrste, ekološki faktori, male akumulacije</ns7:keyword>
    <ns7:keyword language="sr" seq="1">phytoplankton cyanobacteria, Cyanobacteria, cyanotoxins, invasive species, ecological factors, small accumulations</ns7:keyword>
    <ns7:keyword language="sr" seq="1">582.232:574.58(497.11)(043.3)</ns7:keyword>
  </ns1:classification>
  <ns1:organization>
    <ns8:hoschtyp>1738</ns8:hoschtyp>
    <ns8:orgassignment>
      <ns8:faculty>34A08</ns8:faculty>
    </ns8:orgassignment>
  </ns1:organization>
  <ns12:digitalbook>
    <ns12:releaseyear>2021</ns12:releaseyear>
  </ns12:digitalbook>
</ns0:uwmetadata>
