Author Contributions
Stefania Leopardi: research design, fieldwork, laboratory and computational analyses, paper writing
Marzia Mancin: research design, statistical analyses, paper writing
Barbara Zecchin, Angela Salomoni and Bianca Zecchin: laboratory analyses
Pamela Priori: fieldwork
Dino Scaravelli: research design and fieldwork
Paola De Benedictis: funding, research design and coordination, review of the manuscript
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