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Interactions between microplastics and phytoplankton aggregates : Impact on their respective fates ArchiMer
Long, Marc; Moriceau, Brivaela; Gallinari, Morgane; Lambert, Christophe; Huvet, Arnaud; Raffray, Jean; Soudant, Philippe.
Plastic debris are resistant to degradation, and therefore tend to accumulate in marine environment. Nevertheless recent estimations of plastic concentrations at the surface of the ocean were lower than expected leading the communities to seek new sinks. Among the different processes suggested we chose to focus on the transport of microplastics from the surface to deeper layers of the ocean via phytoplankton aggregates that constitute most of the sinking flux. Interactions between microplastics and aggregates were studied by building a new device: the flow-through roller tank that mimics the behaviour of laboratory made aggregates sinking through a dense layer of microplastics. Three types of aggregates formed from two different algae species (the diatom...
Tipo: Text Palavras-chave: Microplastic sink; Vertical export; Diatom and cryptophyte aggregates; Settling rate; Permeability.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00259/37048/35557.pdf
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