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Global homogenization of the structure and function in the soil microbiome of urban greenspaces

Manuel Delgado-Baquerizo 1 David Eldridge 2 Yu-Rong Liu 3 Blessing Sokoya 4 Jun-Tao Wang 5 Hang-Wei Hu 6, 7 Ji-Zheng He 6, 7 Felipe Bastida 8 José Moreno 8 Adebola Bamigboye 9 José Blanco-Pastor 10 Concha Cano-Díaz 11 Javier Illán 12 Thulani Makhalanyane 13 Christina Siebe 14 Pankaj Trivedi 15 Eli Zaady 16 Jay Prakash Verma 17 Ling Wang 18 Jianyong Wang 18 Tine Grebenc 19 Gabriel Peñaloza-Bojacá 20 Tina Nahberger 19 Alberto Teixido 21 Xin-Quan Zhou 3 Miguel Berdugo 8, 22 Jorge Duran 23 Alexandra Rodríguez 23 Xiaobing Zhou 24 Fernando Alfaro 25, 8 Sebastian Abades 8 Cesar Plaza 8 Ana Rey 8 Brajesh Singh 5 Leho Tedersoo 26 Noah Fierer 4
Abstract : The structure and function of the soil microbiome of urban greenspaces remain largely undetermined. We conducted a global field survey in urban greenspaces and neighboring natural ecosystems across 56 cities from six continents, and found that urban soils are important hotspots for soil bacterial, protist and functional gene diversity, but support highly homogenized microbial communities worldwide. Urban greenspaces had a greater proportion of fast-growing bacteria, algae, amoebae, and fungal pathogens, but a lower proportion of ectomycorrhizal fungi than natural ecosystems. These urban ecosystems also showed higher proportions of genes associated with human pathogens, greenhouse gas emissions, faster nutrient cycling, and more intense abiotic stress than natural environments. City affluence, management practices, and climate were fundamental drivers of urban soil communities. Our work paves the way toward a more comprehensive global-scale perspective on urban greenspaces, which is integral to managing the health of these ecosystems and the well-being of human populations.
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Submitted on : Monday, August 2, 2021 - 5:04:25 PM
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Manuel Delgado-Baquerizo, David Eldridge, Yu-Rong Liu, Blessing Sokoya, Jun-Tao Wang, et al.. Global homogenization of the structure and function in the soil microbiome of urban greenspaces. Science Advances , American Association for the Advancement of Science (AAAS), 2021, 7 (28), pp.1-15. ⟨10.1126/sciadv.abg5809⟩. ⟨hal-03312768⟩



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