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Vpliv obraščene mikroplastike na izbrane vodne organizme
Puntar, Brina (Author), Jemec Kokalj, Anita (Mentor) More about this mentor... This link opens in a new window, Toman, Mihael Jožef (Co-mentor)

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Abstract
Med mnogimi človekovimi vplivi na okolje, je kopičenje plastike postal eden bolj očitnih in težavnih okoljskih problemov. Plastične delce, ki so manjši od 5 mm, imenujemo mikroplastika (MP). MP vzbuja skrb, saj ima bioakumulacijski potencial, vsebuje aditive, lahko veže onesnaževala iz okolja in služi kot pritrditveni substrat za najrazličnejše organizme. V naši raziskavi smo se osredotočili na vplive čiste polietilenske (PE) MP ter PE MP inkubirane v različnih tipih vod na tri izbrane organizme: mala vodna leča (Lemna minor), vodna bolha (Daphnia magna) in zarodki rib cebric (Danio rerio). Naš cilj je bil preučiti vplive na preživetje vodnih bolh, na inhibicijo rasti in na dolžino korenin male vodne leče ter na razvoj zarodkov rib cebric. Uporabili smo štiri tipe vzorčnih vod: deponijska izcedna voda, voda iz čistilne naprave, mestna rečna voda ter izvirska rečna voda. Preverjali smo vpliv omenjenih vzorcev vod, čistih PE MP delcev, PE MP delcev, ki so bili inkubirani v vzorcih vod in vpliv izluženih snovi iz čistih in inkubiranih MP delcev. Našli smo signifikanten vpliv deponijske izcedne vode na preživetje vodnih bolh in razvoj zarodkov rib cebric. V nasprotju MP delci niso imeli vpliva na nobenega od preučevanih organizmov. Poleg tega se vpliv MP delcev med različnimi tipi vod ni razlikoval. Vpliv MP izlužkov smo preverjali na vodnih bolhah in cebricah. Izlužki so imeli izrazit vpliv na preživetje vodnih bolh in nezaznaven vpliv na razvoj cebric.

Language:Slovenian
Keywords:obraščena mikroplastika, izlužki, vodna bolha, mala vodna leča, cebrica
Work type:Master's thesis/paper (mb22)
Organization:BF - Biotechnical Faculty
Year:2018
COBISS.SI-ID:4957007 This link opens in a new window
Views:1029
Downloads:300
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Secondary language

Language:Unknown
Title:Influence of microplastics with biofilm on the selected freshwater organisms
Abstract:
Among many human impacts on nature, the accumulation of plastic debris has become one of the most obvious and problematic global issues. Fragments, typically smaller than 5 mm, are called microplastics (MP). MP is of a special concern because it has bioaccumulation potential, contains chemical additives, can adsorb different contaminants and can be used as a substrate for different species. In our study, we focused on the effects of polyethylene (PE) MP and PE MP grown in different water sources on three species of selected organisms: duckweed (Lemna minor), water flea (Daphnia magna) and zebrafish embryos (Danio rerio). Our objective was to investigate effects on the survival rate of water fleas, growth inhibition and root length of duckweed and development of zebrafish embryos. We used four different types of water: landfill leachate water, wastewater treatment plant effluent, city river, spring. We studyed effects of mentioned water types, PE MP, PE MP incubated in different water types and MP leachates. We found strong effect of landfill leachate water on the survival of water fleas and development of zebra fish. We found no significant acute effect of MP particles on the observed organisms. Further, no effect of MP was found on observed organism, regardless the type of water they were incubated in. We found no effect of MP leachates on the development and survival of zebrafish embryos but found significant effect on the survival of water fleas.

Keywords:microplastics with biofilm, leachates, water flea, duckweed, zebrafish

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