Revealing human impact on natural ecosystems through soil bacterial DNA sampled from an archaeological site

Boivin Stéphane, Bourceret Améliia, Maurice Kenji, Laurent-Webb Liam, Figura Tomas, Bourillon Julie, Nespoulous Jérôme, Domergue Odile, Chaintreuil Clémence, Boukcim Hassan, Selosse Marc-André, Fiema Zbigniew, Botte Emmanuel, Nehme Laila, Ducousso Marc. 2024. Revealing human impact on natural ecosystems through soil bacterial DNA sampled from an archaeological site. Environmental Microbiology, 26 (1):e16546, 13 p.

Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/bioproject/PRJNA1037340

Résumé : Human activities have affected the surrounding natural ecosystems, including belowground microorganisms, for millennia. Their short- and medium-term effects on the diversity and the composition of soil microbial communities are well-documented, but their lasting effects remain unknown. When unoccupied for centuries, archaeological sites are appropriate for studying the long-term effects of past human occupancy on natural ecosystems, including the soil compartment. In this work, the soil chemical and bacterial compositions were compared between the Roman fort of Hegra (Saudi Arabia) abandoned for 1500 years, and a preserved area located at 120 m of the southern wall of the Roman fort where no human occupancy was detected. We show that the four centuries of human occupancy have deeply and lastingly modified both the soil chemical and bacterial compositions inside the Roman fort. We also highlight different bacterial putative functions between the two areas, notably associated with human occupancy. Finally, this work shows that the use of soils from archaeological sites causes little disruption and can bring relevant information, at a large scale, during the initial surveys of archaeological sites.

Mots-clés Agrovoc : composition chimique, genre humain, écosystèmes arides, micro-organisme du sol, biodiversité, écosystème

Mots-clés géographiques Agrovoc : Arabie Saoudite

Classification Agris : P01 - Conservation de la nature et ressources foncières
P34 - Biologie du sol

Champ stratégique Cirad : CTS 1 (2019-) - Biodiversité

Agences de financement hors UE : Agence Française de Développement d'AlUla, Royal Commission of AlUla

Projets sur financement : (FRA) Knowing SOil for a better understanding of its FUNctioning to improve Land uses and préservation at Al Ula

Auteurs et affiliations

• Boivin Stéphane, LSTM (FRA) - auteur correspondant
• Bourceret Améliia, ISYEB (FRA)
• Maurice Kenji, CIRAD-BIOS-UMR LSTM (FRA)
• Laurent-Webb Liam, ISYEB (FRA)
• Figura Tomas, ISYEB (FRA)
• Bourillon Julie, IRD (FRA)
• Nespoulous Jérôme, Valorhiz (FRA)
• Domergue Odile, LSTM (FRA)
• Chaintreuil Clémence, LSTM (FRA)
• Boukcim Hassan, Valorhiz (FRA)
• Selosse Marc-André, ISYEB (FRA)
• Fiema Zbigniew, University of Helsinki (FIN)
• Botte Emmanuel, CNRS (FRA)
• Nehme Laila, CNRS (FRA)
• Ducousso Marc, CIRAD-BIOS-UMR LSTM (FRA) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/607683/)

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