Microplastic contamination of the drilling bivalve Hiatella arctica in Arctic rhodolith beds.

Autor: Teichert S; GeoZentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany. sebastian.teichert@fau.de., Löder MGJ; Department of Animal Ecology I and BayCEER, University of Bayreuth, 95440, Bayreuth, Germany., Pyko I; GeoZentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany., Mordek M; Department of Animal Ecology I and BayCEER, University of Bayreuth, 95440, Bayreuth, Germany., Schulbert C; GeoZentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054, Erlangen, Germany., Wisshak M; Marine Research Department, Senckenberg am Meer, 26382, Wilhelmshaven, Germany., Laforsch C; Department of Animal Ecology I and BayCEER, University of Bayreuth, 95440, Bayreuth, Germany.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2021 Jul 16; Vol. 11 (1), pp. 14574. Date of Electronic Publication: 2021 Jul 16.
DOI: 10.1038/s41598-021-93668-w
Abstrakt: There is an increasing number of studies reporting microplastic (MP) contamination in the Arctic environment. We analysed MP abundance in samples from a marine Arctic ecosystem that has not been investigated in this context and that features a high biodiversity: hollow rhodoliths gouged by the bivalve Hiatella arctica. This bivalve is a filter feeder that potentially accumulates MPs and may therefore reflect MP contamination of the rhodolith ecosystem at northern Svalbard. Our analyses revealed that 100% of the examined specimens were contaminated with MP, ranging between one and 184 MP particles per bivalve in samples from two water depths. Polymer composition and abundance differed strongly between both water depths: samples from 40 m water depth showed a generally higher concentration of MPs and were clearly dominated by polystyrene, samples from 27 m water depth were more balanced in composition, mainly consisting of polyethylene, polyethylene terephthalate, and polypropylene. Long-term consequences of MP contamination in the investigated bivalve species and for the rhodolith bed ecosystem are yet unclear. However, the uptake of MPs may potentially impact H. arctica and consequently its functioning as ecosystem engineers in Arctic rhodolith beds.
(© 2021. The Author(s).)
Databáze: MEDLINE
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