Original scientific paper

https://doi.org/10.1515/botcro-2015-0026

Development of periphytic diatoms on different artificial substrates in the Eastern Adriatic Sea

Tina Nenadović ; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10000 Zagreb, Croatia
Tena Šarčević ; »20.000 Leagues« Marine Explorers Society, L. Sorkočevića 3, 23000 Zadar, Croatia
Hrvoje Čižmek ; »20.000 Leagues« Marine Explorers Society, L. Sorkočevića 3, 23000 Zadar, Croatia
Jelena Godrijan ; Ruđer Bošković Institute, Centre for marine research, G. Paliaga 5, 52210 Rovinj, Croatia
Daniela Marić Pfannkuchen ; Ruđer Bošković Institute, Centre for marine research, G. Paliaga 5, 52210 Rovinj, Croatia
Martin Pfannkuchen ; Ruđer Bošković Institute, Centre for marine research, G. Paliaga 5, 52210 Rovinj, Croatia
Zrinka Ljubešić ; University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10000 Zagreb, Croatia

Abstract

The settling of diatoms as fouling organisms on a certain substrate is greatly influenced by substrate characteristics and the preferences of a diatom community and diatom species. A distinction among substrates can be made by analysing the specific abundance and composition of diatoms on different substrates. In this study, 11 different artificial substrates were exposed to a marine environment for a period of 30 days. Abundance and taxonomic composition of periphytic diatoms was determined on each of the substrates and on shoots of the marine seagrass Posidonia oceanica. The aim was to compare diatom community structure on different newly colonized surfaces. On all surfaces examined, periphytic diatoms were the pioneering organisms with differences in quantitative and qualitative composition on the different substrates. Taxonomic analysis of diatom communities on the substrates examined revealed 41 diatom taxa, with the dominant genera Cylindrotheca, Amphora, Nitzschia, Cocconeis and Navicula. Given that all the examined artificial substrates were solid materials, differences in the abundance and species composition of diatoms found between the materials point to the substrates’ physical and chemical characteristics as a major influence on the final settling of diatoms. Knowledge from investigating the settlement of fouling organisms on anthropogenic substrates can have future use in management of waste materials that end up in the marine environment.

Keywords

Adriatic Sea; anthropogenic materials; artificial substrates; diatoms; fouling; marine litter, periphyton

Hrčak ID:

146035

URI

https://hrcak.srce.hr/146035

Publication date:

1.10.2015.

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