Obiettivo Microplastics represent an increasing threat to aquatic ecosystems, with potential impacts on the cycling of fundamental elements and ecological consequences at all trophic levels. Low-density polyolefins, like polyethylene and polypropylene, are the most common plastics produced and are ubiquitous in marine environments. Floating on the sea-surface, they can have direct and indirect impacts on the sea-surface microlayer (SML), a key interface for biochemical and photochemical processes controlling gas exchange between the ocean and the atmosphere. The SML is an enriched biofilm of organic biological material aggregating and favouring high microbial activity. The effects of an increasing presence of microplastics on the cycling of organic matter in the surface ocean are not well understood, and yet they may have a major impact on this key interface. POSEIDOMM will investigate the influence of microplastics on the photochemical and biological processes in the SML. We will verify the effect of microplastic pollutants on the formation of a surface-active biofilm, the implications for microbial cycles and for the photochemical generation of reactive chemical species and labile organic compounds. The goals of POSEIDOMM are to provide a chemical and biological characterization of the microplastic-biofilm aggregates in the SML, to quantify the photochemical cycling of such aggregates and to identify the implications of this cycling on gas exchange and on the microbial carbon cycle.This will be achieved through a trans-disciplinary approach combining innovative spectroscopic and biological analyses to study the SML in controlled microcosms and in-situ mesocosm studies. Through a close cooperation with leading European partners, POSEIDOMM will close major gaps in our understanding of the interaction of micropollutants with marine biological processes and atmospheric gas exchange. Campo scientifico natural sciencesbiological sciencesmarine biologynatural scienceschemical sciencesorganic chemistrynatural sciencesearth and related environmental sciencesenvironmental sciencespollutionnatural sciencesbiological sciencesecologyecosystemsnatural sciencesearth and related environmental scienceshydrologylimnology Programma(i) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Argomento(i) MSCA-IF-2015-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF) Invito a presentare proposte H2020-MSCA-IF-2015 Vedi altri progetti per questo bando Meccanismo di finanziamento MSCA-IF-EF-RI - RI – Reintegration panel Coordinatore UNIVERSITA DEGLI STUDI DI SIENA Contribution nette de l'UE € 180 277,20 Indirizzo VIA BANCHI DI SOTTO 55 53100 Siena Italia Mostra sulla mappa Regione Centro (IT) Toscana Siena Tipo di attività Higher or Secondary Education Establishments Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Partecipazione a programmi di R&I dell'UE Opens in new window Rete di collaborazione HORIZON Opens in new window Costo totale € 180 277,20