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Registration Number

0220U100161, 0119U102375 , R & D reports

Title

Estimation of processes of overgrowing formation on sea litter under experimental conditions

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Head

Portianko Valentyn V.,

Registration Date

10-01-2020

Organization

Institute of Marine Biology, National Academy of Sciences of Ukraine

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 The object of the study is the process of fouling formation on the plastic substrate by benthic marine organisms The purpose of the work is to study the stages of formation of marine organisms on different types of marine debris in laboratory and natural conditions. Research methods are the development of experimental facilities for the study of fouling formation on polymeric materials in laboratory and natural environment. We conducted 2 types of short-term experiments in laboratory (35 days) and in nature (7 days) to study the fouling of polymeric materials by microalgae. To study formation of marcozoofouling it was conducted 2 long-term experiments in the Gulf of Odessa and near Zmeinyi Island. Based on the results the research methods for studying of microalgae rate settlement on plastic materials in laboratory and nature were developed. For the first time in the region, experimental field studies have been conducted to study the stages of marine debris biofouling. Polyethylene terephthalate (PET) is found to form a primary layer of bacteria and microalgae during a week in the natural environment. Biofouling on PET fragments with a rough surface appear much faster. Further data from long-term experiments will show what types of hydrobionts form the most stable assemblages on plastic. The study of the interaction of fouling organisms and plastic materials in the marine environment is proposed to be considered as an integral element of environmental monitoring, which will contribute to the formation and understanding of the "good environmental status" of the sea (EU Marine Strategy).

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Portianko Valentyn V.
Uzun Olena Ye.

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2020-04-02